Java tutorial
/* * Copyright (C) 2006 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package android.view; import android.annotation.UnsupportedAppUsage; import android.os.Build; import android.os.Parcel; import android.os.Parcelable; import android.text.method.MetaKeyKeyListener; import android.util.Log; import android.util.SparseIntArray; import android.view.KeyCharacterMap.KeyData; /** * Object used to report key and button events. * <p> * Each key press is described by a sequence of key events. A key press * starts with a key event with {@link #ACTION_DOWN}. If the key is held * sufficiently long that it repeats, then the initial down is followed * additional key events with {@link #ACTION_DOWN} and a non-zero value for * {@link #getRepeatCount()}. The last key event is a {@link #ACTION_UP} * for the key up. If the key press is canceled, the key up event will have the * {@link #FLAG_CANCELED} flag set. * </p><p> * Key events are generally accompanied by a key code ({@link #getKeyCode()}), * scan code ({@link #getScanCode()}) and meta state ({@link #getMetaState()}). * Key code constants are defined in this class. Scan code constants are raw * device-specific codes obtained from the OS and so are not generally meaningful * to applications unless interpreted using the {@link KeyCharacterMap}. * Meta states describe the pressed state of key modifiers * such as {@link #META_SHIFT_ON} or {@link #META_ALT_ON}. * </p><p> * Key codes typically correspond one-to-one with individual keys on an input device. * Many keys and key combinations serve quite different functions on different * input devices so care must be taken when interpreting them. Always use the * {@link KeyCharacterMap} associated with the input device when mapping keys * to characters. Be aware that there may be multiple key input devices active * at the same time and each will have its own key character map. * </p><p> * As soft input methods can use multiple and inventive ways of inputting text, * there is no guarantee that any key press on a soft keyboard will generate a key * event: this is left to the IME's discretion, and in fact sending such events is * discouraged. You should never rely on receiving KeyEvents for any key on a soft * input method. In particular, the default software keyboard will never send any * key event to any application targetting Jelly Bean or later, and will only send * events for some presses of the delete and return keys to applications targetting * Ice Cream Sandwich or earlier. Be aware that other software input methods may * never send key events regardless of the version. Consider using editor actions * like {@link android.view.inputmethod.EditorInfo#IME_ACTION_DONE} if you need * specific interaction with the software keyboard, as it gives more visibility to * the user as to how your application will react to key presses. * </p><p> * When interacting with an IME, the framework may deliver key events * with the special action {@link #ACTION_MULTIPLE} that either specifies * that single repeated key code or a sequence of characters to insert. * </p><p> * In general, the framework cannot guarantee that the key events it delivers * to a view always constitute complete key sequences since some events may be dropped * or modified by containing views before they are delivered. The view implementation * should be prepared to handle {@link #FLAG_CANCELED} and should tolerate anomalous * situations such as receiving a new {@link #ACTION_DOWN} without first having * received an {@link #ACTION_UP} for the prior key press. * </p><p> * Refer to {@link InputDevice} for more information about how different kinds of * input devices and sources represent keys and buttons. * </p> */ public class KeyEvent extends InputEvent implements Parcelable { /** Key code constant: Unknown key code. */ public static final int KEYCODE_UNKNOWN = 0; /** Key code constant: Soft Left key. * Usually situated below the display on phones and used as a multi-function * feature key for selecting a software defined function shown on the bottom left * of the display. */ public static final int KEYCODE_SOFT_LEFT = 1; /** Key code constant: Soft Right key. * Usually situated below the display on phones and used as a multi-function * feature key for selecting a software defined function shown on the bottom right * of the display. */ public static final int KEYCODE_SOFT_RIGHT = 2; /** Key code constant: Home key. * This key is handled by the framework and is never delivered to applications. */ public static final int KEYCODE_HOME = 3; /** Key code constant: Back key. */ public static final int KEYCODE_BACK = 4; /** Key code constant: Call key. */ public static final int KEYCODE_CALL = 5; /** Key code constant: End Call key. */ public static final int KEYCODE_ENDCALL = 6; /** Key code constant: '0' key. */ public static final int KEYCODE_0 = 7; /** Key code constant: '1' key. */ public static final int KEYCODE_1 = 8; /** Key code constant: '2' key. */ public static final int KEYCODE_2 = 9; /** Key code constant: '3' key. */ public static final int KEYCODE_3 = 10; /** Key code constant: '4' key. */ public static final int KEYCODE_4 = 11; /** Key code constant: '5' key. */ public static final int KEYCODE_5 = 12; /** Key code constant: '6' key. */ public static final int KEYCODE_6 = 13; /** Key code constant: '7' key. */ public static final int KEYCODE_7 = 14; /** Key code constant: '8' key. */ public static final int KEYCODE_8 = 15; /** Key code constant: '9' key. */ public static final int KEYCODE_9 = 16; /** Key code constant: '*' key. */ public static final int KEYCODE_STAR = 17; /** Key code constant: '#' key. */ public static final int KEYCODE_POUND = 18; /** Key code constant: Directional Pad Up key. * May also be synthesized from trackball motions. */ public static final int KEYCODE_DPAD_UP = 19; /** Key code constant: Directional Pad Down key. * May also be synthesized from trackball motions. */ public static final int KEYCODE_DPAD_DOWN = 20; /** Key code constant: Directional Pad Left key. * May also be synthesized from trackball motions. */ public static final int KEYCODE_DPAD_LEFT = 21; /** Key code constant: Directional Pad Right key. * May also be synthesized from trackball motions. */ public static final int KEYCODE_DPAD_RIGHT = 22; /** Key code constant: Directional Pad Center key. * May also be synthesized from trackball motions. */ public static final int KEYCODE_DPAD_CENTER = 23; /** Key code constant: Volume Up key. * Adjusts the speaker volume up. */ public static final int KEYCODE_VOLUME_UP = 24; /** Key code constant: Volume Down key. * Adjusts the speaker volume down. */ public static final int KEYCODE_VOLUME_DOWN = 25; /** Key code constant: Power key. */ public static final int KEYCODE_POWER = 26; /** Key code constant: Camera key. * Used to launch a camera application or take pictures. */ public static final int KEYCODE_CAMERA = 27; /** Key code constant: Clear key. */ public static final int KEYCODE_CLEAR = 28; /** Key code constant: 'A' key. */ public static final int KEYCODE_A = 29; /** Key code constant: 'B' key. */ public static final int KEYCODE_B = 30; /** Key code constant: 'C' key. */ public static final int KEYCODE_C = 31; /** Key code constant: 'D' key. */ public static final int KEYCODE_D = 32; /** Key code constant: 'E' key. */ public static final int KEYCODE_E = 33; /** Key code constant: 'F' key. */ public static final int KEYCODE_F = 34; /** Key code constant: 'G' key. */ public static final int KEYCODE_G = 35; /** Key code constant: 'H' key. */ public static final int KEYCODE_H = 36; /** Key code constant: 'I' key. */ public static final int KEYCODE_I = 37; /** Key code constant: 'J' key. */ public static final int KEYCODE_J = 38; /** Key code constant: 'K' key. */ public static final int KEYCODE_K = 39; /** Key code constant: 'L' key. */ public static final int KEYCODE_L = 40; /** Key code constant: 'M' key. */ public static final int KEYCODE_M = 41; /** Key code constant: 'N' key. */ public static final int KEYCODE_N = 42; /** Key code constant: 'O' key. */ public static final int KEYCODE_O = 43; /** Key code constant: 'P' key. */ public static final int KEYCODE_P = 44; /** Key code constant: 'Q' key. */ public static final int KEYCODE_Q = 45; /** Key code constant: 'R' key. */ public static final int KEYCODE_R = 46; /** Key code constant: 'S' key. */ public static final int KEYCODE_S = 47; /** Key code constant: 'T' key. */ public static final int KEYCODE_T = 48; /** Key code constant: 'U' key. */ public static final int KEYCODE_U = 49; /** Key code constant: 'V' key. */ public static final int KEYCODE_V = 50; /** Key code constant: 'W' key. */ public static final int KEYCODE_W = 51; /** Key code constant: 'X' key. */ public static final int KEYCODE_X = 52; /** Key code constant: 'Y' key. */ public static final int KEYCODE_Y = 53; /** Key code constant: 'Z' key. */ public static final int KEYCODE_Z = 54; /** Key code constant: ',' key. */ public static final int KEYCODE_COMMA = 55; /** Key code constant: '.' key. */ public static final int KEYCODE_PERIOD = 56; /** Key code constant: Left Alt modifier key. */ public static final int KEYCODE_ALT_LEFT = 57; /** Key code constant: Right Alt modifier key. */ public static final int KEYCODE_ALT_RIGHT = 58; /** Key code constant: Left Shift modifier key. */ public static final int KEYCODE_SHIFT_LEFT = 59; /** Key code constant: Right Shift modifier key. */ public static final int KEYCODE_SHIFT_RIGHT = 60; /** Key code constant: Tab key. */ public static final int KEYCODE_TAB = 61; /** Key code constant: Space key. */ public static final int KEYCODE_SPACE = 62; /** Key code constant: Symbol modifier key. * Used to enter alternate symbols. */ public static final int KEYCODE_SYM = 63; /** Key code constant: Explorer special function key. * Used to launch a browser application. */ public static final int KEYCODE_EXPLORER = 64; /** Key code constant: Envelope special function key. * Used to launch a mail application. */ public static final int KEYCODE_ENVELOPE = 65; /** Key code constant: Enter key. */ public static final int KEYCODE_ENTER = 66; /** Key code constant: Backspace key. * Deletes characters before the insertion point, unlike {@link #KEYCODE_FORWARD_DEL}. */ public static final int KEYCODE_DEL = 67; /** Key code constant: '`' (backtick) key. */ public static final int KEYCODE_GRAVE = 68; /** Key code constant: '-'. */ public static final int KEYCODE_MINUS = 69; /** Key code constant: '=' key. */ public static final int KEYCODE_EQUALS = 70; /** Key code constant: '[' key. */ public static final int KEYCODE_LEFT_BRACKET = 71; /** Key code constant: ']' key. */ public static final int KEYCODE_RIGHT_BRACKET = 72; /** Key code constant: '\' key. */ public static final int KEYCODE_BACKSLASH = 73; /** Key code constant: ';' key. */ public static final int KEYCODE_SEMICOLON = 74; /** Key code constant: ''' (apostrophe) key. */ public static final int KEYCODE_APOSTROPHE = 75; /** Key code constant: '/' key. */ public static final int KEYCODE_SLASH = 76; /** Key code constant: '@' key. */ public static final int KEYCODE_AT = 77; /** Key code constant: Number modifier key. * Used to enter numeric symbols. * This key is not Num Lock; it is more like {@link #KEYCODE_ALT_LEFT} and is * interpreted as an ALT key by {@link android.text.method.MetaKeyKeyListener}. */ public static final int KEYCODE_NUM = 78; /** Key code constant: Headset Hook key. * Used to hang up calls and stop media. */ public static final int KEYCODE_HEADSETHOOK = 79; /** Key code constant: Camera Focus key. * Used to focus the camera. */ public static final int KEYCODE_FOCUS = 80; // *Camera* focus /** Key code constant: '+' key. */ public static final int KEYCODE_PLUS = 81; /** Key code constant: Menu key. */ public static final int KEYCODE_MENU = 82; /** Key code constant: Notification key. */ public static final int KEYCODE_NOTIFICATION = 83; /** Key code constant: Search key. */ public static final int KEYCODE_SEARCH = 84; /** Key code constant: Play/Pause media key. */ public static final int KEYCODE_MEDIA_PLAY_PAUSE = 85; /** Key code constant: Stop media key. */ public static final int KEYCODE_MEDIA_STOP = 86; /** Key code constant: Play Next media key. */ public static final int KEYCODE_MEDIA_NEXT = 87; /** Key code constant: Play Previous media key. */ public static final int KEYCODE_MEDIA_PREVIOUS = 88; /** Key code constant: Rewind media key. */ public static final int KEYCODE_MEDIA_REWIND = 89; /** Key code constant: Fast Forward media key. */ public static final int KEYCODE_MEDIA_FAST_FORWARD = 90; /** Key code constant: Mute key. * Mutes the microphone, unlike {@link #KEYCODE_VOLUME_MUTE}. */ public static final int KEYCODE_MUTE = 91; /** Key code constant: Page Up key. */ public static final int KEYCODE_PAGE_UP = 92; /** Key code constant: Page Down key. */ public static final int KEYCODE_PAGE_DOWN = 93; /** Key code constant: Picture Symbols modifier key. * Used to switch symbol sets (Emoji, Kao-moji). */ public static final int KEYCODE_PICTSYMBOLS = 94; // switch symbol-sets (Emoji,Kao-moji) /** Key code constant: Switch Charset modifier key. * Used to switch character sets (Kanji, Katakana). */ public static final int KEYCODE_SWITCH_CHARSET = 95; // switch char-sets (Kanji,Katakana) /** Key code constant: A Button key. * On a game controller, the A button should be either the button labeled A * or the first button on the bottom row of controller buttons. */ public static final int KEYCODE_BUTTON_A = 96; /** Key code constant: B Button key. * On a game controller, the B button should be either the button labeled B * or the second button on the bottom row of controller buttons. */ public static final int KEYCODE_BUTTON_B = 97; /** Key code constant: C Button key. * On a game controller, the C button should be either the button labeled C * or the third button on the bottom row of controller buttons. */ public static final int KEYCODE_BUTTON_C = 98; /** Key code constant: X Button key. * On a game controller, the X button should be either the button labeled X * or the first button on the upper row of controller buttons. */ public static final int KEYCODE_BUTTON_X = 99; /** Key code constant: Y Button key. * On a game controller, the Y button should be either the button labeled Y * or the second button on the upper row of controller buttons. */ public static final int KEYCODE_BUTTON_Y = 100; /** Key code constant: Z Button key. * On a game controller, the Z button should be either the button labeled Z * or the third button on the upper row of controller buttons. */ public static final int KEYCODE_BUTTON_Z = 101; /** Key code constant: L1 Button key. * On a game controller, the L1 button should be either the button labeled L1 (or L) * or the top left trigger button. */ public static final int KEYCODE_BUTTON_L1 = 102; /** Key code constant: R1 Button key. * On a game controller, the R1 button should be either the button labeled R1 (or R) * or the top right trigger button. */ public static final int KEYCODE_BUTTON_R1 = 103; /** Key code constant: L2 Button key. * On a game controller, the L2 button should be either the button labeled L2 * or the bottom left trigger button. */ public static final int KEYCODE_BUTTON_L2 = 104; /** Key code constant: R2 Button key. * On a game controller, the R2 button should be either the button labeled R2 * or the bottom right trigger button. */ public static final int KEYCODE_BUTTON_R2 = 105; /** Key code constant: Left Thumb Button key. * On a game controller, the left thumb button indicates that the left (or only) * joystick is pressed. */ public static final int KEYCODE_BUTTON_THUMBL = 106; /** Key code constant: Right Thumb Button key. * On a game controller, the right thumb button indicates that the right * joystick is pressed. */ public static final int KEYCODE_BUTTON_THUMBR = 107; /** Key code constant: Start Button key. * On a game controller, the button labeled Start. */ public static final int KEYCODE_BUTTON_START = 108; /** Key code constant: Select Button key. * On a game controller, the button labeled Select. */ public static final int KEYCODE_BUTTON_SELECT = 109; /** Key code constant: Mode Button key. * On a game controller, the button labeled Mode. */ public static final int KEYCODE_BUTTON_MODE = 110; /** Key code constant: Escape key. */ public static final int KEYCODE_ESCAPE = 111; /** Key code constant: Forward Delete key. * Deletes characters ahead of the insertion point, unlike {@link #KEYCODE_DEL}. */ public static final int KEYCODE_FORWARD_DEL = 112; /** Key code constant: Left Control modifier key. */ public static final int KEYCODE_CTRL_LEFT = 113; /** Key code constant: Right Control modifier key. */ public static final int KEYCODE_CTRL_RIGHT = 114; /** Key code constant: Caps Lock key. */ public static final int KEYCODE_CAPS_LOCK = 115; /** Key code constant: Scroll Lock key. */ public static final int KEYCODE_SCROLL_LOCK = 116; /** Key code constant: Left Meta modifier key. */ public static final int KEYCODE_META_LEFT = 117; /** Key code constant: Right Meta modifier key. */ public static final int KEYCODE_META_RIGHT = 118; /** Key code constant: Function modifier key. */ public static final int KEYCODE_FUNCTION = 119; /** Key code constant: System Request / Print Screen key. */ public static final int KEYCODE_SYSRQ = 120; /** Key code constant: Break / Pause key. */ public static final int KEYCODE_BREAK = 121; /** Key code constant: Home Movement key. * Used for scrolling or moving the cursor around to the start of a line * or to the top of a list. */ public static final int KEYCODE_MOVE_HOME = 122; /** Key code constant: End Movement key. * Used for scrolling or moving the cursor around to the end of a line * or to the bottom of a list. */ public static final int KEYCODE_MOVE_END = 123; /** Key code constant: Insert key. * Toggles insert / overwrite edit mode. */ public static final int KEYCODE_INSERT = 124; /** Key code constant: Forward key. * Navigates forward in the history stack. Complement of {@link #KEYCODE_BACK}. */ public static final int KEYCODE_FORWARD = 125; /** Key code constant: Play media key. */ public static final int KEYCODE_MEDIA_PLAY = 126; /** Key code constant: Pause media key. */ public static final int KEYCODE_MEDIA_PAUSE = 127; /** Key code constant: Close media key. * May be used to close a CD tray, for example. */ public static final int KEYCODE_MEDIA_CLOSE = 128; /** Key code constant: Eject media key. * May be used to eject a CD tray, for example. */ public static final int KEYCODE_MEDIA_EJECT = 129; /** Key code constant: Record media key. */ public static final int KEYCODE_MEDIA_RECORD = 130; /** Key code constant: F1 key. */ public static final int KEYCODE_F1 = 131; /** Key code constant: F2 key. */ public static final int KEYCODE_F2 = 132; /** Key code constant: F3 key. */ public static final int KEYCODE_F3 = 133; /** Key code constant: F4 key. */ public static final int KEYCODE_F4 = 134; /** Key code constant: F5 key. */ public static final int KEYCODE_F5 = 135; /** Key code constant: F6 key. */ public static final int KEYCODE_F6 = 136; /** Key code constant: F7 key. */ public static final int KEYCODE_F7 = 137; /** Key code constant: F8 key. */ public static final int KEYCODE_F8 = 138; /** Key code constant: F9 key. */ public static final int KEYCODE_F9 = 139; /** Key code constant: F10 key. */ public static final int KEYCODE_F10 = 140; /** Key code constant: F11 key. */ public static final int KEYCODE_F11 = 141; /** Key code constant: F12 key. */ public static final int KEYCODE_F12 = 142; /** Key code constant: Num Lock key. * This is the Num Lock key; it is different from {@link #KEYCODE_NUM}. * This key alters the behavior of other keys on the numeric keypad. */ public static final int KEYCODE_NUM_LOCK = 143; /** Key code constant: Numeric keypad '0' key. */ public static final int KEYCODE_NUMPAD_0 = 144; /** Key code constant: Numeric keypad '1' key. */ public static final int KEYCODE_NUMPAD_1 = 145; /** Key code constant: Numeric keypad '2' key. */ public static final int KEYCODE_NUMPAD_2 = 146; /** Key code constant: Numeric keypad '3' key. */ public static final int KEYCODE_NUMPAD_3 = 147; /** Key code constant: Numeric keypad '4' key. */ public static final int KEYCODE_NUMPAD_4 = 148; /** Key code constant: Numeric keypad '5' key. */ public static final int KEYCODE_NUMPAD_5 = 149; /** Key code constant: Numeric keypad '6' key. */ public static final int KEYCODE_NUMPAD_6 = 150; /** Key code constant: Numeric keypad '7' key. */ public static final int KEYCODE_NUMPAD_7 = 151; /** Key code constant: Numeric keypad '8' key. */ public static final int KEYCODE_NUMPAD_8 = 152; /** Key code constant: Numeric keypad '9' key. */ public static final int KEYCODE_NUMPAD_9 = 153; /** Key code constant: Numeric keypad '/' key (for division). */ public static final int KEYCODE_NUMPAD_DIVIDE = 154; /** Key code constant: Numeric keypad '*' key (for multiplication). */ public static final int KEYCODE_NUMPAD_MULTIPLY = 155; /** Key code constant: Numeric keypad '-' key (for subtraction). */ public static final int KEYCODE_NUMPAD_SUBTRACT = 156; /** Key code constant: Numeric keypad '+' key (for addition). */ public static final int KEYCODE_NUMPAD_ADD = 157; /** Key code constant: Numeric keypad '.' key (for decimals or digit grouping). */ public static final int KEYCODE_NUMPAD_DOT = 158; /** Key code constant: Numeric keypad ',' key (for decimals or digit grouping). */ public static final int KEYCODE_NUMPAD_COMMA = 159; /** Key code constant: Numeric keypad Enter key. */ public static final int KEYCODE_NUMPAD_ENTER = 160; /** Key code constant: Numeric keypad '=' key. */ public static final int KEYCODE_NUMPAD_EQUALS = 161; /** Key code constant: Numeric keypad '(' key. */ public static final int KEYCODE_NUMPAD_LEFT_PAREN = 162; /** Key code constant: Numeric keypad ')' key. */ public static final int KEYCODE_NUMPAD_RIGHT_PAREN = 163; /** Key code constant: Volume Mute key. * Mutes the speaker, unlike {@link #KEYCODE_MUTE}. * This key should normally be implemented as a toggle such that the first press * mutes the speaker and the second press restores the original volume. */ public static final int KEYCODE_VOLUME_MUTE = 164; /** Key code constant: Info key. * Common on TV remotes to show additional information related to what is * currently being viewed. */ public static final int KEYCODE_INFO = 165; /** Key code constant: Channel up key. * On TV remotes, increments the television channel. */ public static final int KEYCODE_CHANNEL_UP = 166; /** Key code constant: Channel down key. * On TV remotes, decrements the television channel. */ public static final int KEYCODE_CHANNEL_DOWN = 167; /** Key code constant: Zoom in key. */ public static final int KEYCODE_ZOOM_IN = 168; /** Key code constant: Zoom out key. */ public static final int KEYCODE_ZOOM_OUT = 169; /** Key code constant: TV key. * On TV remotes, switches to viewing live TV. */ public static final int KEYCODE_TV = 170; /** Key code constant: Window key. * On TV remotes, toggles picture-in-picture mode or other windowing functions. * On Android Wear devices, triggers a display offset. */ public static final int KEYCODE_WINDOW = 171; /** Key code constant: Guide key. * On TV remotes, shows a programming guide. */ public static final int KEYCODE_GUIDE = 172; /** Key code constant: DVR key. * On some TV remotes, switches to a DVR mode for recorded shows. */ public static final int KEYCODE_DVR = 173; /** Key code constant: Bookmark key. * On some TV remotes, bookmarks content or web pages. */ public static final int KEYCODE_BOOKMARK = 174; /** Key code constant: Toggle captions key. * Switches the mode for closed-captioning text, for example during television shows. */ public static final int KEYCODE_CAPTIONS = 175; /** Key code constant: Settings key. * Starts the system settings activity. */ public static final int KEYCODE_SETTINGS = 176; /** Key code constant: TV power key. * On TV remotes, toggles the power on a television screen. */ public static final int KEYCODE_TV_POWER = 177; /** Key code constant: TV input key. * On TV remotes, switches the input on a television screen. */ public static final int KEYCODE_TV_INPUT = 178; /** Key code constant: Set-top-box power key. * On TV remotes, toggles the power on an external Set-top-box. */ public static final int KEYCODE_STB_POWER = 179; /** Key code constant: Set-top-box input key. * On TV remotes, switches the input mode on an external Set-top-box. */ public static final int KEYCODE_STB_INPUT = 180; /** Key code constant: A/V Receiver power key. * On TV remotes, toggles the power on an external A/V Receiver. */ public static final int KEYCODE_AVR_POWER = 181; /** Key code constant: A/V Receiver input key. * On TV remotes, switches the input mode on an external A/V Receiver. */ public static final int KEYCODE_AVR_INPUT = 182; /** Key code constant: Red "programmable" key. * On TV remotes, acts as a contextual/programmable key. */ public static final int KEYCODE_PROG_RED = 183; /** Key code constant: Green "programmable" key. * On TV remotes, actsas a contextual/programmable key. */ public static final int KEYCODE_PROG_GREEN = 184; /** Key code constant: Yellow "programmable" key. * On TV remotes, acts as a contextual/programmable key. */ public static final int KEYCODE_PROG_YELLOW = 185; /** Key code constant: Blue "programmable" key. * On TV remotes, acts as a contextual/programmable key. */ public static final int KEYCODE_PROG_BLUE = 186; /** Key code constant: App switch key. * Should bring up the application switcher dialog. */ public static final int KEYCODE_APP_SWITCH = 187; /** Key code constant: Generic Game Pad Button #1.*/ public static final int KEYCODE_BUTTON_1 = 188; /** Key code constant: Generic Game Pad Button #2.*/ public static final int KEYCODE_BUTTON_2 = 189; /** Key code constant: Generic Game Pad Button #3.*/ public static final int KEYCODE_BUTTON_3 = 190; /** Key code constant: Generic Game Pad Button #4.*/ public static final int KEYCODE_BUTTON_4 = 191; /** Key code constant: Generic Game Pad Button #5.*/ public static final int KEYCODE_BUTTON_5 = 192; /** Key code constant: Generic Game Pad Button #6.*/ public static final int KEYCODE_BUTTON_6 = 193; /** Key code constant: Generic Game Pad Button #7.*/ public static final int KEYCODE_BUTTON_7 = 194; /** Key code constant: Generic Game Pad Button #8.*/ public static final int KEYCODE_BUTTON_8 = 195; /** Key code constant: Generic Game Pad Button #9.*/ public static final int KEYCODE_BUTTON_9 = 196; /** Key code constant: Generic Game Pad Button #10.*/ public static final int KEYCODE_BUTTON_10 = 197; /** Key code constant: Generic Game Pad Button #11.*/ public static final int KEYCODE_BUTTON_11 = 198; /** Key code constant: Generic Game Pad Button #12.*/ public static final int KEYCODE_BUTTON_12 = 199; /** Key code constant: Generic Game Pad Button #13.*/ public static final int KEYCODE_BUTTON_13 = 200; /** Key code constant: Generic Game Pad Button #14.*/ public static final int KEYCODE_BUTTON_14 = 201; /** Key code constant: Generic Game Pad Button #15.*/ public static final int KEYCODE_BUTTON_15 = 202; /** Key code constant: Generic Game Pad Button #16.*/ public static final int KEYCODE_BUTTON_16 = 203; /** Key code constant: Language Switch key. * Toggles the current input language such as switching between English and Japanese on * a QWERTY keyboard. On some devices, the same function may be performed by * pressing Shift+Spacebar. */ public static final int KEYCODE_LANGUAGE_SWITCH = 204; /** Key code constant: Manner Mode key. * Toggles silent or vibrate mode on and off to make the device behave more politely * in certain settings such as on a crowded train. On some devices, the key may only * operate when long-pressed. */ public static final int KEYCODE_MANNER_MODE = 205; /** Key code constant: 3D Mode key. * Toggles the display between 2D and 3D mode. */ public static final int KEYCODE_3D_MODE = 206; /** Key code constant: Contacts special function key. * Used to launch an address book application. */ public static final int KEYCODE_CONTACTS = 207; /** Key code constant: Calendar special function key. * Used to launch a calendar application. */ public static final int KEYCODE_CALENDAR = 208; /** Key code constant: Music special function key. * Used to launch a music player application. */ public static final int KEYCODE_MUSIC = 209; /** Key code constant: Calculator special function key. * Used to launch a calculator application. */ public static final int KEYCODE_CALCULATOR = 210; /** Key code constant: Japanese full-width / half-width key. */ public static final int KEYCODE_ZENKAKU_HANKAKU = 211; /** Key code constant: Japanese alphanumeric key. */ public static final int KEYCODE_EISU = 212; /** Key code constant: Japanese non-conversion key. */ public static final int KEYCODE_MUHENKAN = 213; /** Key code constant: Japanese conversion key. */ public static final int KEYCODE_HENKAN = 214; /** Key code constant: Japanese katakana / hiragana key. */ public static final int KEYCODE_KATAKANA_HIRAGANA = 215; /** Key code constant: Japanese Yen key. */ public static final int KEYCODE_YEN = 216; /** Key code constant: Japanese Ro key. */ public static final int KEYCODE_RO = 217; /** Key code constant: Japanese kana key. */ public static final int KEYCODE_KANA = 218; /** Key code constant: Assist key. * Launches the global assist activity. Not delivered to applications. */ public static final int KEYCODE_ASSIST = 219; /** Key code constant: Brightness Down key. * Adjusts the screen brightness down. */ public static final int KEYCODE_BRIGHTNESS_DOWN = 220; /** Key code constant: Brightness Up key. * Adjusts the screen brightness up. */ public static final int KEYCODE_BRIGHTNESS_UP = 221; /** Key code constant: Audio Track key. * Switches the audio tracks. */ public static final int KEYCODE_MEDIA_AUDIO_TRACK = 222; /** Key code constant: Sleep key. * Puts the device to sleep. Behaves somewhat like {@link #KEYCODE_POWER} but it * has no effect if the device is already asleep. */ public static final int KEYCODE_SLEEP = 223; /** Key code constant: Wakeup key. * Wakes up the device. Behaves somewhat like {@link #KEYCODE_POWER} but it * has no effect if the device is already awake. */ public static final int KEYCODE_WAKEUP = 224; /** Key code constant: Pairing key. * Initiates peripheral pairing mode. Useful for pairing remote control * devices or game controllers, especially if no other input mode is * available. */ public static final int KEYCODE_PAIRING = 225; /** Key code constant: Media Top Menu key. * Goes to the top of media menu. */ public static final int KEYCODE_MEDIA_TOP_MENU = 226; /** Key code constant: '11' key. */ public static final int KEYCODE_11 = 227; /** Key code constant: '12' key. */ public static final int KEYCODE_12 = 228; /** Key code constant: Last Channel key. * Goes to the last viewed channel. */ public static final int KEYCODE_LAST_CHANNEL = 229; /** Key code constant: TV data service key. * Displays data services like weather, sports. */ public static final int KEYCODE_TV_DATA_SERVICE = 230; /** Key code constant: Voice Assist key. * Launches the global voice assist activity. Not delivered to applications. */ public static final int KEYCODE_VOICE_ASSIST = 231; /** Key code constant: Radio key. * Toggles TV service / Radio service. */ public static final int KEYCODE_TV_RADIO_SERVICE = 232; /** Key code constant: Teletext key. * Displays Teletext service. */ public static final int KEYCODE_TV_TELETEXT = 233; /** Key code constant: Number entry key. * Initiates to enter multi-digit channel nubmber when each digit key is assigned * for selecting separate channel. Corresponds to Number Entry Mode (0x1D) of CEC * User Control Code. */ public static final int KEYCODE_TV_NUMBER_ENTRY = 234; /** Key code constant: Analog Terrestrial key. * Switches to analog terrestrial broadcast service. */ public static final int KEYCODE_TV_TERRESTRIAL_ANALOG = 235; /** Key code constant: Digital Terrestrial key. * Switches to digital terrestrial broadcast service. */ public static final int KEYCODE_TV_TERRESTRIAL_DIGITAL = 236; /** Key code constant: Satellite key. * Switches to digital satellite broadcast service. */ public static final int KEYCODE_TV_SATELLITE = 237; /** Key code constant: BS key. * Switches to BS digital satellite broadcasting service available in Japan. */ public static final int KEYCODE_TV_SATELLITE_BS = 238; /** Key code constant: CS key. * Switches to CS digital satellite broadcasting service available in Japan. */ public static final int KEYCODE_TV_SATELLITE_CS = 239; /** Key code constant: BS/CS key. * Toggles between BS and CS digital satellite services. */ public static final int KEYCODE_TV_SATELLITE_SERVICE = 240; /** Key code constant: Toggle Network key. * Toggles selecting broacast services. */ public static final int KEYCODE_TV_NETWORK = 241; /** Key code constant: Antenna/Cable key. * Toggles broadcast input source between antenna and cable. */ public static final int KEYCODE_TV_ANTENNA_CABLE = 242; /** Key code constant: HDMI #1 key. * Switches to HDMI input #1. */ public static final int KEYCODE_TV_INPUT_HDMI_1 = 243; /** Key code constant: HDMI #2 key. * Switches to HDMI input #2. */ public static final int KEYCODE_TV_INPUT_HDMI_2 = 244; /** Key code constant: HDMI #3 key. * Switches to HDMI input #3. */ public static final int KEYCODE_TV_INPUT_HDMI_3 = 245; /** Key code constant: HDMI #4 key. * Switches to HDMI input #4. */ public static final int KEYCODE_TV_INPUT_HDMI_4 = 246; /** Key code constant: Composite #1 key. * Switches to composite video input #1. */ public static final int KEYCODE_TV_INPUT_COMPOSITE_1 = 247; /** Key code constant: Composite #2 key. * Switches to composite video input #2. */ public static final int KEYCODE_TV_INPUT_COMPOSITE_2 = 248; /** Key code constant: Component #1 key. * Switches to component video input #1. */ public static final int KEYCODE_TV_INPUT_COMPONENT_1 = 249; /** Key code constant: Component #2 key. * Switches to component video input #2. */ public static final int KEYCODE_TV_INPUT_COMPONENT_2 = 250; /** Key code constant: VGA #1 key. * Switches to VGA (analog RGB) input #1. */ public static final int KEYCODE_TV_INPUT_VGA_1 = 251; /** Key code constant: Audio description key. * Toggles audio description off / on. */ public static final int KEYCODE_TV_AUDIO_DESCRIPTION = 252; /** Key code constant: Audio description mixing volume up key. * Louden audio description volume as compared with normal audio volume. */ public static final int KEYCODE_TV_AUDIO_DESCRIPTION_MIX_UP = 253; /** Key code constant: Audio description mixing volume down key. * Lessen audio description volume as compared with normal audio volume. */ public static final int KEYCODE_TV_AUDIO_DESCRIPTION_MIX_DOWN = 254; /** Key code constant: Zoom mode key. * Changes Zoom mode (Normal, Full, Zoom, Wide-zoom, etc.) */ public static final int KEYCODE_TV_ZOOM_MODE = 255; /** Key code constant: Contents menu key. * Goes to the title list. Corresponds to Contents Menu (0x0B) of CEC User Control * Code */ public static final int KEYCODE_TV_CONTENTS_MENU = 256; /** Key code constant: Media context menu key. * Goes to the context menu of media contents. Corresponds to Media Context-sensitive * Menu (0x11) of CEC User Control Code. */ public static final int KEYCODE_TV_MEDIA_CONTEXT_MENU = 257; /** Key code constant: Timer programming key. * Goes to the timer recording menu. Corresponds to Timer Programming (0x54) of * CEC User Control Code. */ public static final int KEYCODE_TV_TIMER_PROGRAMMING = 258; /** Key code constant: Help key. */ public static final int KEYCODE_HELP = 259; /** Key code constant: Navigate to previous key. * Goes backward by one item in an ordered collection of items. */ public static final int KEYCODE_NAVIGATE_PREVIOUS = 260; /** Key code constant: Navigate to next key. * Advances to the next item in an ordered collection of items. */ public static final int KEYCODE_NAVIGATE_NEXT = 261; /** Key code constant: Navigate in key. * Activates the item that currently has focus or expands to the next level of a navigation * hierarchy. */ public static final int KEYCODE_NAVIGATE_IN = 262; /** Key code constant: Navigate out key. * Backs out one level of a navigation hierarchy or collapses the item that currently has * focus. */ public static final int KEYCODE_NAVIGATE_OUT = 263; /** Key code constant: Primary stem key for Wear * Main power/reset button on watch. */ public static final int KEYCODE_STEM_PRIMARY = 264; /** Key code constant: Generic stem key 1 for Wear */ public static final int KEYCODE_STEM_1 = 265; /** Key code constant: Generic stem key 2 for Wear */ public static final int KEYCODE_STEM_2 = 266; /** Key code constant: Generic stem key 3 for Wear */ public static final int KEYCODE_STEM_3 = 267; /** Key code constant: Directional Pad Up-Left */ public static final int KEYCODE_DPAD_UP_LEFT = 268; /** Key code constant: Directional Pad Down-Left */ public static final int KEYCODE_DPAD_DOWN_LEFT = 269; /** Key code constant: Directional Pad Up-Right */ public static final int KEYCODE_DPAD_UP_RIGHT = 270; /** Key code constant: Directional Pad Down-Right */ public static final int KEYCODE_DPAD_DOWN_RIGHT = 271; /** Key code constant: Skip forward media key. */ public static final int KEYCODE_MEDIA_SKIP_FORWARD = 272; /** Key code constant: Skip backward media key. */ public static final int KEYCODE_MEDIA_SKIP_BACKWARD = 273; /** Key code constant: Step forward media key. * Steps media forward, one frame at a time. */ public static final int KEYCODE_MEDIA_STEP_FORWARD = 274; /** Key code constant: Step backward media key. * Steps media backward, one frame at a time. */ public static final int KEYCODE_MEDIA_STEP_BACKWARD = 275; /** Key code constant: put device to sleep unless a wakelock is held. */ public static final int KEYCODE_SOFT_SLEEP = 276; /** Key code constant: Cut key. */ public static final int KEYCODE_CUT = 277; /** Key code constant: Copy key. */ public static final int KEYCODE_COPY = 278; /** Key code constant: Paste key. */ public static final int KEYCODE_PASTE = 279; /** Key code constant: Consumed by the system for navigation up */ public static final int KEYCODE_SYSTEM_NAVIGATION_UP = 280; /** Key code constant: Consumed by the system for navigation down */ public static final int KEYCODE_SYSTEM_NAVIGATION_DOWN = 281; /** Key code constant: Consumed by the system for navigation left*/ public static final int KEYCODE_SYSTEM_NAVIGATION_LEFT = 282; /** Key code constant: Consumed by the system for navigation right */ public static final int KEYCODE_SYSTEM_NAVIGATION_RIGHT = 283; /** Key code constant: Show all apps */ public static final int KEYCODE_ALL_APPS = 284; /** Key code constant: Refresh key. */ public static final int KEYCODE_REFRESH = 285; private static final int LAST_KEYCODE = KEYCODE_REFRESH; // NOTE: If you add a new keycode here you must also add it to: // isSystem() // isWakeKey() // frameworks/native/include/android/keycodes.h // frameworks/native/include/input/InputEventLabels.h // frameworks/base/core/res/res/values/attrs.xml // emulator? // LAST_KEYCODE // // Also Android currently does not reserve code ranges for vendor- // specific key codes. If you have new key codes to have, you // MUST contribute a patch to the open source project to define // those new codes. This is intended to maintain a consistent // set of key code definitions across all Android devices. // Symbolic names of all metakeys in bit order from least significant to most significant. // Accordingly there are exactly 32 values in this table. @UnsupportedAppUsage private static final String[] META_SYMBOLIC_NAMES = new String[] { "META_SHIFT_ON", "META_ALT_ON", "META_SYM_ON", "META_FUNCTION_ON", "META_ALT_LEFT_ON", "META_ALT_RIGHT_ON", "META_SHIFT_LEFT_ON", "META_SHIFT_RIGHT_ON", "META_CAP_LOCKED", "META_ALT_LOCKED", "META_SYM_LOCKED", "0x00000800", "META_CTRL_ON", "META_CTRL_LEFT_ON", "META_CTRL_RIGHT_ON", "0x00008000", "META_META_ON", "META_META_LEFT_ON", "META_META_RIGHT_ON", "0x00080000", "META_CAPS_LOCK_ON", "META_NUM_LOCK_ON", "META_SCROLL_LOCK_ON", "0x00800000", "0x01000000", "0x02000000", "0x04000000", "0x08000000", "0x10000000", "0x20000000", "0x40000000", "0x80000000", }; private static final String LABEL_PREFIX = "KEYCODE_"; /** * @deprecated There are now more than MAX_KEYCODE keycodes. * Use {@link #getMaxKeyCode()} instead. */ @Deprecated public static final int MAX_KEYCODE = 84; /** * {@link #getAction} value: the key has been pressed down. */ public static final int ACTION_DOWN = 0; /** * {@link #getAction} value: the key has been released. */ public static final int ACTION_UP = 1; /** * {@link #getAction} value: multiple duplicate key events have * occurred in a row, or a complex string is being delivered. If the * key code is not {@link #KEYCODE_UNKNOWN} then the * {@link #getRepeatCount()} method returns the number of times * the given key code should be executed. * Otherwise, if the key code is {@link #KEYCODE_UNKNOWN}, then * this is a sequence of characters as returned by {@link #getCharacters}. */ public static final int ACTION_MULTIPLE = 2; /** * SHIFT key locked in CAPS mode. * Reserved for use by {@link MetaKeyKeyListener} for a published constant in its API. * @hide */ @UnsupportedAppUsage public static final int META_CAP_LOCKED = 0x100; /** * ALT key locked. * Reserved for use by {@link MetaKeyKeyListener} for a published constant in its API. * @hide */ @UnsupportedAppUsage public static final int META_ALT_LOCKED = 0x200; /** * SYM key locked. * Reserved for use by {@link MetaKeyKeyListener} for a published constant in its API. * @hide */ @UnsupportedAppUsage public static final int META_SYM_LOCKED = 0x400; /** * Text is in selection mode. * Reserved for use by {@link MetaKeyKeyListener} for a private unpublished constant * in its API that is currently being retained for legacy reasons. * @hide */ @UnsupportedAppUsage public static final int META_SELECTING = 0x800; /** * <p>This mask is used to check whether one of the ALT meta keys is pressed.</p> * * @see #isAltPressed() * @see #getMetaState() * @see #KEYCODE_ALT_LEFT * @see #KEYCODE_ALT_RIGHT */ public static final int META_ALT_ON = 0x02; /** * <p>This mask is used to check whether the left ALT meta key is pressed.</p> * * @see #isAltPressed() * @see #getMetaState() * @see #KEYCODE_ALT_LEFT */ public static final int META_ALT_LEFT_ON = 0x10; /** * <p>This mask is used to check whether the right the ALT meta key is pressed.</p> * * @see #isAltPressed() * @see #getMetaState() * @see #KEYCODE_ALT_RIGHT */ public static final int META_ALT_RIGHT_ON = 0x20; /** * <p>This mask is used to check whether one of the SHIFT meta keys is pressed.</p> * * @see #isShiftPressed() * @see #getMetaState() * @see #KEYCODE_SHIFT_LEFT * @see #KEYCODE_SHIFT_RIGHT */ public static final int META_SHIFT_ON = 0x1; /** * <p>This mask is used to check whether the left SHIFT meta key is pressed.</p> * * @see #isShiftPressed() * @see #getMetaState() * @see #KEYCODE_SHIFT_LEFT */ public static final int META_SHIFT_LEFT_ON = 0x40; /** * <p>This mask is used to check whether the right SHIFT meta key is pressed.</p> * * @see #isShiftPressed() * @see #getMetaState() * @see #KEYCODE_SHIFT_RIGHT */ public static final int META_SHIFT_RIGHT_ON = 0x80; /** * <p>This mask is used to check whether the SYM meta key is pressed.</p> * * @see #isSymPressed() * @see #getMetaState() */ public static final int META_SYM_ON = 0x4; /** * <p>This mask is used to check whether the FUNCTION meta key is pressed.</p> * * @see #isFunctionPressed() * @see #getMetaState() */ public static final int META_FUNCTION_ON = 0x8; /** * <p>This mask is used to check whether one of the CTRL meta keys is pressed.</p> * * @see #isCtrlPressed() * @see #getMetaState() * @see #KEYCODE_CTRL_LEFT * @see #KEYCODE_CTRL_RIGHT */ public static final int META_CTRL_ON = 0x1000; /** * <p>This mask is used to check whether the left CTRL meta key is pressed.</p> * * @see #isCtrlPressed() * @see #getMetaState() * @see #KEYCODE_CTRL_LEFT */ public static final int META_CTRL_LEFT_ON = 0x2000; /** * <p>This mask is used to check whether the right CTRL meta key is pressed.</p> * * @see #isCtrlPressed() * @see #getMetaState() * @see #KEYCODE_CTRL_RIGHT */ public static final int META_CTRL_RIGHT_ON = 0x4000; /** * <p>This mask is used to check whether one of the META meta keys is pressed.</p> * * @see #isMetaPressed() * @see #getMetaState() * @see #KEYCODE_META_LEFT * @see #KEYCODE_META_RIGHT */ public static final int META_META_ON = 0x10000; /** * <p>This mask is used to check whether the left META meta key is pressed.</p> * * @see #isMetaPressed() * @see #getMetaState() * @see #KEYCODE_META_LEFT */ public static final int META_META_LEFT_ON = 0x20000; /** * <p>This mask is used to check whether the right META meta key is pressed.</p> * * @see #isMetaPressed() * @see #getMetaState() * @see #KEYCODE_META_RIGHT */ public static final int META_META_RIGHT_ON = 0x40000; /** * <p>This mask is used to check whether the CAPS LOCK meta key is on.</p> * * @see #isCapsLockOn() * @see #getMetaState() * @see #KEYCODE_CAPS_LOCK */ public static final int META_CAPS_LOCK_ON = 0x100000; /** * <p>This mask is used to check whether the NUM LOCK meta key is on.</p> * * @see #isNumLockOn() * @see #getMetaState() * @see #KEYCODE_NUM_LOCK */ public static final int META_NUM_LOCK_ON = 0x200000; /** * <p>This mask is used to check whether the SCROLL LOCK meta key is on.</p> * * @see #isScrollLockOn() * @see #getMetaState() * @see #KEYCODE_SCROLL_LOCK */ public static final int META_SCROLL_LOCK_ON = 0x400000; /** * This mask is a combination of {@link #META_SHIFT_ON}, {@link #META_SHIFT_LEFT_ON} * and {@link #META_SHIFT_RIGHT_ON}. */ public static final int META_SHIFT_MASK = META_SHIFT_ON | META_SHIFT_LEFT_ON | META_SHIFT_RIGHT_ON; /** * This mask is a combination of {@link #META_ALT_ON}, {@link #META_ALT_LEFT_ON} * and {@link #META_ALT_RIGHT_ON}. */ public static final int META_ALT_MASK = META_ALT_ON | META_ALT_LEFT_ON | META_ALT_RIGHT_ON; /** * This mask is a combination of {@link #META_CTRL_ON}, {@link #META_CTRL_LEFT_ON} * and {@link #META_CTRL_RIGHT_ON}. */ public static final int META_CTRL_MASK = META_CTRL_ON | META_CTRL_LEFT_ON | META_CTRL_RIGHT_ON; /** * This mask is a combination of {@link #META_META_ON}, {@link #META_META_LEFT_ON} * and {@link #META_META_RIGHT_ON}. */ public static final int META_META_MASK = META_META_ON | META_META_LEFT_ON | META_META_RIGHT_ON; /** * This mask is set if the device woke because of this key event. * * @deprecated This flag will never be set by the system since the system * consumes all wake keys itself. */ @Deprecated public static final int FLAG_WOKE_HERE = 0x1; /** * This mask is set if the key event was generated by a software keyboard. */ public static final int FLAG_SOFT_KEYBOARD = 0x2; /** * This mask is set if we don't want the key event to cause us to leave * touch mode. */ public static final int FLAG_KEEP_TOUCH_MODE = 0x4; /** * This mask is set if an event was known to come from a trusted part * of the system. That is, the event is known to come from the user, * and could not have been spoofed by a third party component. */ public static final int FLAG_FROM_SYSTEM = 0x8; /** * This mask is used for compatibility, to identify enter keys that are * coming from an IME whose enter key has been auto-labelled "next" or * "done". This allows TextView to dispatch these as normal enter keys * for old applications, but still do the appropriate action when * receiving them. */ public static final int FLAG_EDITOR_ACTION = 0x10; /** * When associated with up key events, this indicates that the key press * has been canceled. Typically this is used with virtual touch screen * keys, where the user can slide from the virtual key area on to the * display: in that case, the application will receive a canceled up * event and should not perform the action normally associated with the * key. Note that for this to work, the application can not perform an * action for a key until it receives an up or the long press timeout has * expired. */ public static final int FLAG_CANCELED = 0x20; /** * This key event was generated by a virtual (on-screen) hard key area. * Typically this is an area of the touchscreen, outside of the regular * display, dedicated to "hardware" buttons. */ public static final int FLAG_VIRTUAL_HARD_KEY = 0x40; /** * This flag is set for the first key repeat that occurs after the * long press timeout. */ public static final int FLAG_LONG_PRESS = 0x80; /** * Set when a key event has {@link #FLAG_CANCELED} set because a long * press action was executed while it was down. */ public static final int FLAG_CANCELED_LONG_PRESS = 0x100; /** * Set for {@link #ACTION_UP} when this event's key code is still being * tracked from its initial down. That is, somebody requested that tracking * started on the key down and a long press has not caused * the tracking to be canceled. */ public static final int FLAG_TRACKING = 0x200; /** * Set when a key event has been synthesized to implement default behavior * for an event that the application did not handle. * Fallback key events are generated by unhandled trackball motions * (to emulate a directional keypad) and by certain unhandled key presses * that are declared in the key map (such as special function numeric keypad * keys when numlock is off). */ public static final int FLAG_FALLBACK = 0x400; /** * Signifies that the key is being predispatched. * @hide */ public static final int FLAG_PREDISPATCH = 0x20000000; /** * Private control to determine when an app is tracking a key sequence. * @hide */ public static final int FLAG_START_TRACKING = 0x40000000; /** * Private flag that indicates when the system has detected that this key event * may be inconsistent with respect to the sequence of previously delivered key events, * such as when a key up event is sent but the key was not down. * * @hide * @see #isTainted * @see #setTainted */ public static final int FLAG_TAINTED = 0x80000000; /** * Returns the maximum keycode. */ public static int getMaxKeyCode() { return LAST_KEYCODE; } /** * Get the character that is produced by putting accent on the character * c. * For example, getDeadChar('`', 'e') returns è. */ public static int getDeadChar(int accent, int c) { return KeyCharacterMap.getDeadChar(accent, c); } static final boolean DEBUG = false; static final String TAG = "KeyEvent"; private static final int MAX_RECYCLED = 10; private static final Object gRecyclerLock = new Object(); private static int gRecyclerUsed; private static KeyEvent gRecyclerTop; private KeyEvent mNext; @UnsupportedAppUsage private int mDeviceId; @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023) private int mSource; @UnsupportedAppUsage private int mMetaState; @UnsupportedAppUsage private int mAction; @UnsupportedAppUsage private int mKeyCode; @UnsupportedAppUsage private int mScanCode; @UnsupportedAppUsage private int mRepeatCount; @UnsupportedAppUsage private int mFlags; @UnsupportedAppUsage private long mDownTime; @UnsupportedAppUsage private long mEventTime; @UnsupportedAppUsage private String mCharacters; public interface Callback { /** * Called when a key down event has occurred. If you return true, * you can first call {@link KeyEvent#startTracking() * KeyEvent.startTracking()} to have the framework track the event * through its {@link #onKeyUp(int, KeyEvent)} and also call your * {@link #onKeyLongPress(int, KeyEvent)} if it occurs. * * @param keyCode The value in event.getKeyCode(). * @param event Description of the key event. * * @return If you handled the event, return true. If you want to allow * the event to be handled by the next receiver, return false. */ boolean onKeyDown(int keyCode, KeyEvent event); /** * Called when a long press has occurred. If you return true, * the final key up will have {@link KeyEvent#FLAG_CANCELED} and * {@link KeyEvent#FLAG_CANCELED_LONG_PRESS} set. Note that in * order to receive this callback, someone in the event change * <em>must</em> return true from {@link #onKeyDown} <em>and</em> * call {@link KeyEvent#startTracking()} on the event. * * @param keyCode The value in event.getKeyCode(). * @param event Description of the key event. * * @return If you handled the event, return true. If you want to allow * the event to be handled by the next receiver, return false. */ boolean onKeyLongPress(int keyCode, KeyEvent event); /** * Called when a key up event has occurred. * * @param keyCode The value in event.getKeyCode(). * @param event Description of the key event. * * @return If you handled the event, return true. If you want to allow * the event to be handled by the next receiver, return false. */ boolean onKeyUp(int keyCode, KeyEvent event); /** * Called when a user's interaction with an analog control, such as * flinging a trackball, generates simulated down/up events for the same * key multiple times in quick succession. * * @param keyCode The value in event.getKeyCode(). * @param count Number of pairs as returned by event.getRepeatCount(). * @param event Description of the key event. * * @return If you handled the event, return true. If you want to allow * the event to be handled by the next receiver, return false. */ boolean onKeyMultiple(int keyCode, int count, KeyEvent event); } private static native String nativeKeyCodeToString(int keyCode); private static native int nativeKeyCodeFromString(String keyCode); private KeyEvent() { } /** * Create a new key event. * * @param action Action code: either {@link #ACTION_DOWN}, * {@link #ACTION_UP}, or {@link #ACTION_MULTIPLE}. * @param code The key code. */ public KeyEvent(int action, int code) { mAction = action; mKeyCode = code; mRepeatCount = 0; mDeviceId = KeyCharacterMap.VIRTUAL_KEYBOARD; } /** * Create a new key event. * * @param downTime The time (in {@link android.os.SystemClock#uptimeMillis}) * at which this key code originally went down. * @param eventTime The time (in {@link android.os.SystemClock#uptimeMillis}) * at which this event happened. * @param action Action code: either {@link #ACTION_DOWN}, * {@link #ACTION_UP}, or {@link #ACTION_MULTIPLE}. * @param code The key code. * @param repeat A repeat count for down events (> 0 if this is after the * initial down) or event count for multiple events. */ public KeyEvent(long downTime, long eventTime, int action, int code, int repeat) { mDownTime = downTime; mEventTime = eventTime; mAction = action; mKeyCode = code; mRepeatCount = repeat; mDeviceId = KeyCharacterMap.VIRTUAL_KEYBOARD; } /** * Create a new key event. * * @param downTime The time (in {@link android.os.SystemClock#uptimeMillis}) * at which this key code originally went down. * @param eventTime The time (in {@link android.os.SystemClock#uptimeMillis}) * at which this event happened. * @param action Action code: either {@link #ACTION_DOWN}, * {@link #ACTION_UP}, or {@link #ACTION_MULTIPLE}. * @param code The key code. * @param repeat A repeat count for down events (> 0 if this is after the * initial down) or event count for multiple events. * @param metaState Flags indicating which meta keys are currently pressed. */ public KeyEvent(long downTime, long eventTime, int action, int code, int repeat, int metaState) { mDownTime = downTime; mEventTime = eventTime; mAction = action; mKeyCode = code; mRepeatCount = repeat; mMetaState = metaState; mDeviceId = KeyCharacterMap.VIRTUAL_KEYBOARD; } /** * Create a new key event. * * @param downTime The time (in {@link android.os.SystemClock#uptimeMillis}) * at which this key code originally went down. * @param eventTime The time (in {@link android.os.SystemClock#uptimeMillis}) * at which this event happened. * @param action Action code: either {@link #ACTION_DOWN}, * {@link #ACTION_UP}, or {@link #ACTION_MULTIPLE}. * @param code The key code. * @param repeat A repeat count for down events (> 0 if this is after the * initial down) or event count for multiple events. * @param metaState Flags indicating which meta keys are currently pressed. * @param deviceId The device ID that generated the key event. * @param scancode Raw device scan code of the event. */ public KeyEvent(long downTime, long eventTime, int action, int code, int repeat, int metaState, int deviceId, int scancode) { mDownTime = downTime; mEventTime = eventTime; mAction = action; mKeyCode = code; mRepeatCount = repeat; mMetaState = metaState; mDeviceId = deviceId; mScanCode = scancode; } /** * Create a new key event. * * @param downTime The time (in {@link android.os.SystemClock#uptimeMillis}) * at which this key code originally went down. * @param eventTime The time (in {@link android.os.SystemClock#uptimeMillis}) * at which this event happened. * @param action Action code: either {@link #ACTION_DOWN}, * {@link #ACTION_UP}, or {@link #ACTION_MULTIPLE}. * @param code The key code. * @param repeat A repeat count for down events (> 0 if this is after the * initial down) or event count for multiple events. * @param metaState Flags indicating which meta keys are currently pressed. * @param deviceId The device ID that generated the key event. * @param scancode Raw device scan code of the event. * @param flags The flags for this key event */ public KeyEvent(long downTime, long eventTime, int action, int code, int repeat, int metaState, int deviceId, int scancode, int flags) { mDownTime = downTime; mEventTime = eventTime; mAction = action; mKeyCode = code; mRepeatCount = repeat; mMetaState = metaState; mDeviceId = deviceId; mScanCode = scancode; mFlags = flags; } /** * Create a new key event. * * @param downTime The time (in {@link android.os.SystemClock#uptimeMillis}) * at which this key code originally went down. * @param eventTime The time (in {@link android.os.SystemClock#uptimeMillis}) * at which this event happened. * @param action Action code: either {@link #ACTION_DOWN}, * {@link #ACTION_UP}, or {@link #ACTION_MULTIPLE}. * @param code The key code. * @param repeat A repeat count for down events (> 0 if this is after the * initial down) or event count for multiple events. * @param metaState Flags indicating which meta keys are currently pressed. * @param deviceId The device ID that generated the key event. * @param scancode Raw device scan code of the event. * @param flags The flags for this key event * @param source The input source such as {@link InputDevice#SOURCE_KEYBOARD}. */ public KeyEvent(long downTime, long eventTime, int action, int code, int repeat, int metaState, int deviceId, int scancode, int flags, int source) { mDownTime = downTime; mEventTime = eventTime; mAction = action; mKeyCode = code; mRepeatCount = repeat; mMetaState = metaState; mDeviceId = deviceId; mScanCode = scancode; mFlags = flags; mSource = source; } /** * Create a new key event for a string of characters. The key code, * action, repeat count and source will automatically be set to * {@link #KEYCODE_UNKNOWN}, {@link #ACTION_MULTIPLE}, 0, and * {@link InputDevice#SOURCE_KEYBOARD} for you. * * @param time The time (in {@link android.os.SystemClock#uptimeMillis}) * at which this event occured. * @param characters The string of characters. * @param deviceId The device ID that generated the key event. * @param flags The flags for this key event */ public KeyEvent(long time, String characters, int deviceId, int flags) { mDownTime = time; mEventTime = time; mCharacters = characters; mAction = ACTION_MULTIPLE; mKeyCode = KEYCODE_UNKNOWN; mRepeatCount = 0; mDeviceId = deviceId; mFlags = flags; mSource = InputDevice.SOURCE_KEYBOARD; } /** * Make an exact copy of an existing key event. */ public KeyEvent(KeyEvent origEvent) { mDownTime = origEvent.mDownTime; mEventTime = origEvent.mEventTime; mAction = origEvent.mAction; mKeyCode = origEvent.mKeyCode; mRepeatCount = origEvent.mRepeatCount; mMetaState = origEvent.mMetaState; mDeviceId = origEvent.mDeviceId; mSource = origEvent.mSource; mScanCode = origEvent.mScanCode; mFlags = origEvent.mFlags; mCharacters = origEvent.mCharacters; } /** * Copy an existing key event, modifying its time and repeat count. * * @deprecated Use {@link #changeTimeRepeat(KeyEvent, long, int)} * instead. * * @param origEvent The existing event to be copied. * @param eventTime The new event time * (in {@link android.os.SystemClock#uptimeMillis}) of the event. * @param newRepeat The new repeat count of the event. */ @Deprecated public KeyEvent(KeyEvent origEvent, long eventTime, int newRepeat) { mDownTime = origEvent.mDownTime; mEventTime = eventTime; mAction = origEvent.mAction; mKeyCode = origEvent.mKeyCode; mRepeatCount = newRepeat; mMetaState = origEvent.mMetaState; mDeviceId = origEvent.mDeviceId; mSource = origEvent.mSource; mScanCode = origEvent.mScanCode; mFlags = origEvent.mFlags; mCharacters = origEvent.mCharacters; } private static KeyEvent obtain() { final KeyEvent ev; synchronized (gRecyclerLock) { ev = gRecyclerTop; if (ev == null) { return new KeyEvent(); } gRecyclerTop = ev.mNext; gRecyclerUsed -= 1; } ev.mNext = null; ev.prepareForReuse(); return ev; } /** * Obtains a (potentially recycled) key event. * * @hide */ @UnsupportedAppUsage public static KeyEvent obtain(long downTime, long eventTime, int action, int code, int repeat, int metaState, int deviceId, int scancode, int flags, int source, String characters) { KeyEvent ev = obtain(); ev.mDownTime = downTime; ev.mEventTime = eventTime; ev.mAction = action; ev.mKeyCode = code; ev.mRepeatCount = repeat; ev.mMetaState = metaState; ev.mDeviceId = deviceId; ev.mScanCode = scancode; ev.mFlags = flags; ev.mSource = source; ev.mCharacters = characters; return ev; } /** * Obtains a (potentially recycled) copy of another key event. * * @hide */ public static KeyEvent obtain(KeyEvent other) { KeyEvent ev = obtain(); ev.mDownTime = other.mDownTime; ev.mEventTime = other.mEventTime; ev.mAction = other.mAction; ev.mKeyCode = other.mKeyCode; ev.mRepeatCount = other.mRepeatCount; ev.mMetaState = other.mMetaState; ev.mDeviceId = other.mDeviceId; ev.mScanCode = other.mScanCode; ev.mFlags = other.mFlags; ev.mSource = other.mSource; ev.mCharacters = other.mCharacters; return ev; } /** @hide */ @Override public KeyEvent copy() { return obtain(this); } /** * Recycles a key event. * Key events should only be recycled if they are owned by the system since user * code expects them to be essentially immutable, "tracking" notwithstanding. * * @hide */ @Override @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023) public final void recycle() { super.recycle(); mCharacters = null; synchronized (gRecyclerLock) { if (gRecyclerUsed < MAX_RECYCLED) { gRecyclerUsed++; mNext = gRecyclerTop; gRecyclerTop = this; } } } /** @hide */ @Override public final void recycleIfNeededAfterDispatch() { // Do nothing. } /** * Create a new key event that is the same as the given one, but whose * event time and repeat count are replaced with the given value. * * @param event The existing event to be copied. This is not modified. * @param eventTime The new event time * (in {@link android.os.SystemClock#uptimeMillis}) of the event. * @param newRepeat The new repeat count of the event. */ public static KeyEvent changeTimeRepeat(KeyEvent event, long eventTime, int newRepeat) { return new KeyEvent(event, eventTime, newRepeat); } /** * Create a new key event that is the same as the given one, but whose * event time and repeat count are replaced with the given value. * * @param event The existing event to be copied. This is not modified. * @param eventTime The new event time * (in {@link android.os.SystemClock#uptimeMillis}) of the event. * @param newRepeat The new repeat count of the event. * @param newFlags New flags for the event, replacing the entire value * in the original event. */ public static KeyEvent changeTimeRepeat(KeyEvent event, long eventTime, int newRepeat, int newFlags) { KeyEvent ret = new KeyEvent(event); ret.mEventTime = eventTime; ret.mRepeatCount = newRepeat; ret.mFlags = newFlags; return ret; } /** * Copy an existing key event, modifying its action. * * @param origEvent The existing event to be copied. * @param action The new action code of the event. */ private KeyEvent(KeyEvent origEvent, int action) { mDownTime = origEvent.mDownTime; mEventTime = origEvent.mEventTime; mAction = action; mKeyCode = origEvent.mKeyCode; mRepeatCount = origEvent.mRepeatCount; mMetaState = origEvent.mMetaState; mDeviceId = origEvent.mDeviceId; mSource = origEvent.mSource; mScanCode = origEvent.mScanCode; mFlags = origEvent.mFlags; // Don't copy mCharacters, since one way or the other we'll lose it // when changing the action. } /** * Create a new key event that is the same as the given one, but whose * action is replaced with the given value. * * @param event The existing event to be copied. This is not modified. * @param action The new action code of the event. */ public static KeyEvent changeAction(KeyEvent event, int action) { return new KeyEvent(event, action); } /** * Create a new key event that is the same as the given one, but whose * flags are replaced with the given value. * * @param event The existing event to be copied. This is not modified. * @param flags The new flags constant. */ public static KeyEvent changeFlags(KeyEvent event, int flags) { event = new KeyEvent(event); event.mFlags = flags; return event; } /** @hide */ @Override public final boolean isTainted() { return (mFlags & FLAG_TAINTED) != 0; } /** @hide */ @Override public final void setTainted(boolean tainted) { mFlags = tainted ? mFlags | FLAG_TAINTED : mFlags & ~FLAG_TAINTED; } /** * Don't use in new code, instead explicitly check * {@link #getAction()}. * * @return If the action is ACTION_DOWN, returns true; else false. * * @deprecated * @hide */ @UnsupportedAppUsage @Deprecated public final boolean isDown() { return mAction == ACTION_DOWN; } /** Is this a system key? System keys can not be used for menu shortcuts. */ public final boolean isSystem() { return isSystemKey(mKeyCode); } /** @hide */ public final boolean isWakeKey() { return isWakeKey(mKeyCode); } /** * Returns true if the specified keycode is a gamepad button. * @return True if the keycode is a gamepad button, such as {@link #KEYCODE_BUTTON_A}. */ public static final boolean isGamepadButton(int keyCode) { switch (keyCode) { case KeyEvent.KEYCODE_BUTTON_A: case KeyEvent.KEYCODE_BUTTON_B: case KeyEvent.KEYCODE_BUTTON_C: case KeyEvent.KEYCODE_BUTTON_X: case KeyEvent.KEYCODE_BUTTON_Y: case KeyEvent.KEYCODE_BUTTON_Z: case KeyEvent.KEYCODE_BUTTON_L1: case KeyEvent.KEYCODE_BUTTON_R1: case KeyEvent.KEYCODE_BUTTON_L2: case KeyEvent.KEYCODE_BUTTON_R2: case KeyEvent.KEYCODE_BUTTON_THUMBL: case KeyEvent.KEYCODE_BUTTON_THUMBR: case KeyEvent.KEYCODE_BUTTON_START: case KeyEvent.KEYCODE_BUTTON_SELECT: case KeyEvent.KEYCODE_BUTTON_MODE: case KeyEvent.KEYCODE_BUTTON_1: case KeyEvent.KEYCODE_BUTTON_2: case KeyEvent.KEYCODE_BUTTON_3: case KeyEvent.KEYCODE_BUTTON_4: case KeyEvent.KEYCODE_BUTTON_5: case KeyEvent.KEYCODE_BUTTON_6: case KeyEvent.KEYCODE_BUTTON_7: case KeyEvent.KEYCODE_BUTTON_8: case KeyEvent.KEYCODE_BUTTON_9: case KeyEvent.KEYCODE_BUTTON_10: case KeyEvent.KEYCODE_BUTTON_11: case KeyEvent.KEYCODE_BUTTON_12: case KeyEvent.KEYCODE_BUTTON_13: case KeyEvent.KEYCODE_BUTTON_14: case KeyEvent.KEYCODE_BUTTON_15: case KeyEvent.KEYCODE_BUTTON_16: return true; default: return false; } } /** Whether key will, by default, trigger a click on the focused view. * @hide */ @UnsupportedAppUsage public static final boolean isConfirmKey(int keyCode) { switch (keyCode) { case KeyEvent.KEYCODE_DPAD_CENTER: case KeyEvent.KEYCODE_ENTER: case KeyEvent.KEYCODE_SPACE: case KeyEvent.KEYCODE_NUMPAD_ENTER: return true; default: return false; } } /** * Whether this key is a media key, which can be send to apps that are * interested in media key events. * * @hide */ public static final boolean isMediaKey(int keyCode) { switch (keyCode) { case KeyEvent.KEYCODE_MEDIA_PLAY: case KeyEvent.KEYCODE_MEDIA_PAUSE: case KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE: case KeyEvent.KEYCODE_MUTE: case KeyEvent.KEYCODE_HEADSETHOOK: case KeyEvent.KEYCODE_MEDIA_STOP: case KeyEvent.KEYCODE_MEDIA_NEXT: case KeyEvent.KEYCODE_MEDIA_PREVIOUS: case KeyEvent.KEYCODE_MEDIA_REWIND: case KeyEvent.KEYCODE_MEDIA_RECORD: case KeyEvent.KEYCODE_MEDIA_FAST_FORWARD: return true; } return false; } /** Is this a system key? System keys can not be used for menu shortcuts. * @hide */ public static final boolean isSystemKey(int keyCode) { switch (keyCode) { case KeyEvent.KEYCODE_MENU: case KeyEvent.KEYCODE_SOFT_RIGHT: case KeyEvent.KEYCODE_HOME: case KeyEvent.KEYCODE_BACK: case KeyEvent.KEYCODE_CALL: case KeyEvent.KEYCODE_ENDCALL: case KeyEvent.KEYCODE_VOLUME_UP: case KeyEvent.KEYCODE_VOLUME_DOWN: case KeyEvent.KEYCODE_VOLUME_MUTE: case KeyEvent.KEYCODE_MUTE: case KeyEvent.KEYCODE_POWER: case KeyEvent.KEYCODE_HEADSETHOOK: case KeyEvent.KEYCODE_MEDIA_PLAY: case KeyEvent.KEYCODE_MEDIA_PAUSE: case KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE: case KeyEvent.KEYCODE_MEDIA_STOP: case KeyEvent.KEYCODE_MEDIA_NEXT: case KeyEvent.KEYCODE_MEDIA_PREVIOUS: case KeyEvent.KEYCODE_MEDIA_REWIND: case KeyEvent.KEYCODE_MEDIA_RECORD: case KeyEvent.KEYCODE_MEDIA_FAST_FORWARD: case KeyEvent.KEYCODE_CAMERA: case KeyEvent.KEYCODE_FOCUS: case KeyEvent.KEYCODE_SEARCH: case KeyEvent.KEYCODE_BRIGHTNESS_DOWN: case KeyEvent.KEYCODE_BRIGHTNESS_UP: case KeyEvent.KEYCODE_MEDIA_AUDIO_TRACK: case KeyEvent.KEYCODE_SYSTEM_NAVIGATION_UP: case KeyEvent.KEYCODE_SYSTEM_NAVIGATION_DOWN: case KeyEvent.KEYCODE_SYSTEM_NAVIGATION_LEFT: case KeyEvent.KEYCODE_SYSTEM_NAVIGATION_RIGHT: return true; } return false; } /** @hide */ public static final boolean isWakeKey(int keyCode) { switch (keyCode) { case KeyEvent.KEYCODE_BACK: case KeyEvent.KEYCODE_CAMERA: case KeyEvent.KEYCODE_MENU: case KeyEvent.KEYCODE_PAIRING: case KeyEvent.KEYCODE_STEM_1: case KeyEvent.KEYCODE_STEM_2: case KeyEvent.KEYCODE_STEM_3: case KeyEvent.KEYCODE_WAKEUP: return true; } return false; } /** @hide */ public static final boolean isMetaKey(int keyCode) { return keyCode == KeyEvent.KEYCODE_META_LEFT || keyCode == KeyEvent.KEYCODE_META_RIGHT; } /** @hide */ public static final boolean isAltKey(int keyCode) { return keyCode == KeyEvent.KEYCODE_ALT_LEFT || keyCode == KeyEvent.KEYCODE_ALT_RIGHT; } /** {@inheritDoc} */ @Override public final int getDeviceId() { return mDeviceId; } /** {@inheritDoc} */ @Override public final int getSource() { return mSource; } /** {@inheritDoc} */ @Override public final void setSource(int source) { mSource = source; } /** * <p>Returns the state of the meta keys.</p> * * @return an integer in which each bit set to 1 represents a pressed * meta key * * @see #isAltPressed() * @see #isShiftPressed() * @see #isSymPressed() * @see #isCtrlPressed() * @see #isMetaPressed() * @see #isFunctionPressed() * @see #isCapsLockOn() * @see #isNumLockOn() * @see #isScrollLockOn() * @see #META_ALT_ON * @see #META_ALT_LEFT_ON * @see #META_ALT_RIGHT_ON * @see #META_SHIFT_ON * @see #META_SHIFT_LEFT_ON * @see #META_SHIFT_RIGHT_ON * @see #META_SYM_ON * @see #META_FUNCTION_ON * @see #META_CTRL_ON * @see #META_CTRL_LEFT_ON * @see #META_CTRL_RIGHT_ON * @see #META_META_ON * @see #META_META_LEFT_ON * @see #META_META_RIGHT_ON * @see #META_CAPS_LOCK_ON * @see #META_NUM_LOCK_ON * @see #META_SCROLL_LOCK_ON * @see #getModifiers */ public final int getMetaState() { return mMetaState; } /** * Returns the state of the modifier keys. * <p> * For the purposes of this function, {@link #KEYCODE_CAPS_LOCK}, * {@link #KEYCODE_SCROLL_LOCK}, and {@link #KEYCODE_NUM_LOCK} are * not considered modifier keys. Consequently, this function specifically masks out * {@link #META_CAPS_LOCK_ON}, {@link #META_SCROLL_LOCK_ON} and {@link #META_NUM_LOCK_ON}. * </p><p> * The value returned consists of the meta state (from {@link #getMetaState}) * normalized using {@link #normalizeMetaState(int)} and then masked with * {@link #getModifierMetaStateMask} so that only valid modifier bits are retained. * </p> * * @return An integer in which each bit set to 1 represents a pressed modifier key. * @see #getMetaState */ public final int getModifiers() { return normalizeMetaState(mMetaState) & META_MODIFIER_MASK; } /** * Returns the flags for this key event. * * @see #FLAG_WOKE_HERE */ public final int getFlags() { return mFlags; } // Mask of all modifier key meta states. Specifically excludes locked keys like caps lock. @UnsupportedAppUsage private static final int META_MODIFIER_MASK = META_SHIFT_ON | META_SHIFT_LEFT_ON | META_SHIFT_RIGHT_ON | META_ALT_ON | META_ALT_LEFT_ON | META_ALT_RIGHT_ON | META_CTRL_ON | META_CTRL_LEFT_ON | META_CTRL_RIGHT_ON | META_META_ON | META_META_LEFT_ON | META_META_RIGHT_ON | META_SYM_ON | META_FUNCTION_ON; // Mask of all lock key meta states. @UnsupportedAppUsage private static final int META_LOCK_MASK = META_CAPS_LOCK_ON | META_NUM_LOCK_ON | META_SCROLL_LOCK_ON; // Mask of all valid meta states. @UnsupportedAppUsage private static final int META_ALL_MASK = META_MODIFIER_MASK | META_LOCK_MASK; // Mask of all synthetic meta states that are reserved for API compatibility with // historical uses in MetaKeyKeyListener. @UnsupportedAppUsage private static final int META_SYNTHETIC_MASK = META_CAP_LOCKED | META_ALT_LOCKED | META_SYM_LOCKED | META_SELECTING; // Mask of all meta states that are not valid use in specifying a modifier key. // These bits are known to be used for purposes other than specifying modifiers. @UnsupportedAppUsage private static final int META_INVALID_MODIFIER_MASK = META_LOCK_MASK | META_SYNTHETIC_MASK; /** * Gets a mask that includes all valid modifier key meta state bits. * <p> * For the purposes of this function, {@link #KEYCODE_CAPS_LOCK}, * {@link #KEYCODE_SCROLL_LOCK}, and {@link #KEYCODE_NUM_LOCK} are * not considered modifier keys. Consequently, the mask specifically excludes * {@link #META_CAPS_LOCK_ON}, {@link #META_SCROLL_LOCK_ON} and {@link #META_NUM_LOCK_ON}. * </p> * * @return The modifier meta state mask which is a combination of * {@link #META_SHIFT_ON}, {@link #META_SHIFT_LEFT_ON}, {@link #META_SHIFT_RIGHT_ON}, * {@link #META_ALT_ON}, {@link #META_ALT_LEFT_ON}, {@link #META_ALT_RIGHT_ON}, * {@link #META_CTRL_ON}, {@link #META_CTRL_LEFT_ON}, {@link #META_CTRL_RIGHT_ON}, * {@link #META_META_ON}, {@link #META_META_LEFT_ON}, {@link #META_META_RIGHT_ON}, * {@link #META_SYM_ON}, {@link #META_FUNCTION_ON}. */ public static int getModifierMetaStateMask() { return META_MODIFIER_MASK; } /** * Returns true if this key code is a modifier key. * <p> * For the purposes of this function, {@link #KEYCODE_CAPS_LOCK}, * {@link #KEYCODE_SCROLL_LOCK}, and {@link #KEYCODE_NUM_LOCK} are * not considered modifier keys. Consequently, this function return false * for those keys. * </p> * * @return True if the key code is one of * {@link #KEYCODE_SHIFT_LEFT} {@link #KEYCODE_SHIFT_RIGHT}, * {@link #KEYCODE_ALT_LEFT}, {@link #KEYCODE_ALT_RIGHT}, * {@link #KEYCODE_CTRL_LEFT}, {@link #KEYCODE_CTRL_RIGHT}, * {@link #KEYCODE_META_LEFT}, or {@link #KEYCODE_META_RIGHT}, * {@link #KEYCODE_SYM}, {@link #KEYCODE_NUM}, {@link #KEYCODE_FUNCTION}. */ public static boolean isModifierKey(int keyCode) { switch (keyCode) { case KEYCODE_SHIFT_LEFT: case KEYCODE_SHIFT_RIGHT: case KEYCODE_ALT_LEFT: case KEYCODE_ALT_RIGHT: case KEYCODE_CTRL_LEFT: case KEYCODE_CTRL_RIGHT: case KEYCODE_META_LEFT: case KEYCODE_META_RIGHT: case KEYCODE_SYM: case KEYCODE_NUM: case KEYCODE_FUNCTION: return true; default: return false; } } /** * Normalizes the specified meta state. * <p> * The meta state is normalized such that if either the left or right modifier meta state * bits are set then the result will also include the universal bit for that modifier. * </p><p> * If the specified meta state contains {@link #META_ALT_LEFT_ON} then * the result will also contain {@link #META_ALT_ON} in addition to {@link #META_ALT_LEFT_ON} * and the other bits that were specified in the input. The same is process is * performed for shift, control and meta. * </p><p> * If the specified meta state contains synthetic meta states defined by * {@link MetaKeyKeyListener}, then those states are translated here and the original * synthetic meta states are removed from the result. * {@link MetaKeyKeyListener#META_CAP_LOCKED} is translated to {@link #META_CAPS_LOCK_ON}. * {@link MetaKeyKeyListener#META_ALT_LOCKED} is translated to {@link #META_ALT_ON}. * {@link MetaKeyKeyListener#META_SYM_LOCKED} is translated to {@link #META_SYM_ON}. * </p><p> * Undefined meta state bits are removed. * </p> * * @param metaState The meta state. * @return The normalized meta state. */ public static int normalizeMetaState(int metaState) { if ((metaState & (META_SHIFT_LEFT_ON | META_SHIFT_RIGHT_ON)) != 0) { metaState |= META_SHIFT_ON; } if ((metaState & (META_ALT_LEFT_ON | META_ALT_RIGHT_ON)) != 0) { metaState |= META_ALT_ON; } if ((metaState & (META_CTRL_LEFT_ON | META_CTRL_RIGHT_ON)) != 0) { metaState |= META_CTRL_ON; } if ((metaState & (META_META_LEFT_ON | META_META_RIGHT_ON)) != 0) { metaState |= META_META_ON; } if ((metaState & MetaKeyKeyListener.META_CAP_LOCKED) != 0) { metaState |= META_CAPS_LOCK_ON; } if ((metaState & MetaKeyKeyListener.META_ALT_LOCKED) != 0) { metaState |= META_ALT_ON; } if ((metaState & MetaKeyKeyListener.META_SYM_LOCKED) != 0) { metaState |= META_SYM_ON; } return metaState & META_ALL_MASK; } /** * Returns true if no modifiers keys are pressed according to the specified meta state. * <p> * For the purposes of this function, {@link #KEYCODE_CAPS_LOCK}, * {@link #KEYCODE_SCROLL_LOCK}, and {@link #KEYCODE_NUM_LOCK} are * not considered modifier keys. Consequently, this function ignores * {@link #META_CAPS_LOCK_ON}, {@link #META_SCROLL_LOCK_ON} and {@link #META_NUM_LOCK_ON}. * </p><p> * The meta state is normalized prior to comparison using {@link #normalizeMetaState(int)}. * </p> * * @param metaState The meta state to consider. * @return True if no modifier keys are pressed. * @see #hasNoModifiers() */ public static boolean metaStateHasNoModifiers(int metaState) { return (normalizeMetaState(metaState) & META_MODIFIER_MASK) == 0; } /** * Returns true if only the specified modifier keys are pressed according to * the specified meta state. Returns false if a different combination of modifier * keys are pressed. * <p> * For the purposes of this function, {@link #KEYCODE_CAPS_LOCK}, * {@link #KEYCODE_SCROLL_LOCK}, and {@link #KEYCODE_NUM_LOCK} are * not considered modifier keys. Consequently, this function ignores * {@link #META_CAPS_LOCK_ON}, {@link #META_SCROLL_LOCK_ON} and {@link #META_NUM_LOCK_ON}. * </p><p> * If the specified modifier mask includes directional modifiers, such as * {@link #META_SHIFT_LEFT_ON}, then this method ensures that the * modifier is pressed on that side. * If the specified modifier mask includes non-directional modifiers, such as * {@link #META_SHIFT_ON}, then this method ensures that the modifier * is pressed on either side. * If the specified modifier mask includes both directional and non-directional modifiers * for the same type of key, such as {@link #META_SHIFT_ON} and {@link #META_SHIFT_LEFT_ON}, * then this method throws an illegal argument exception. * </p> * * @param metaState The meta state to consider. * @param modifiers The meta state of the modifier keys to check. May be a combination * of modifier meta states as defined by {@link #getModifierMetaStateMask()}. May be 0 to * ensure that no modifier keys are pressed. * @return True if only the specified modifier keys are pressed. * @throws IllegalArgumentException if the modifiers parameter contains invalid modifiers * @see #hasModifiers */ public static boolean metaStateHasModifiers(int metaState, int modifiers) { // Note: For forward compatibility, we allow the parameter to contain meta states // that we do not recognize but we explicitly disallow meta states that // are not valid modifiers. if ((modifiers & META_INVALID_MODIFIER_MASK) != 0) { throw new IllegalArgumentException( "modifiers must not contain " + "META_CAPS_LOCK_ON, META_NUM_LOCK_ON, META_SCROLL_LOCK_ON, " + "META_CAP_LOCKED, META_ALT_LOCKED, META_SYM_LOCKED, " + "or META_SELECTING"); } metaState = normalizeMetaState(metaState) & META_MODIFIER_MASK; metaState = metaStateFilterDirectionalModifiers(metaState, modifiers, META_SHIFT_ON, META_SHIFT_LEFT_ON, META_SHIFT_RIGHT_ON); metaState = metaStateFilterDirectionalModifiers(metaState, modifiers, META_ALT_ON, META_ALT_LEFT_ON, META_ALT_RIGHT_ON); metaState = metaStateFilterDirectionalModifiers(metaState, modifiers, META_CTRL_ON, META_CTRL_LEFT_ON, META_CTRL_RIGHT_ON); metaState = metaStateFilterDirectionalModifiers(metaState, modifiers, META_META_ON, META_META_LEFT_ON, META_META_RIGHT_ON); return metaState == modifiers; } private static int metaStateFilterDirectionalModifiers(int metaState, int modifiers, int basic, int left, int right) { final boolean wantBasic = (modifiers & basic) != 0; final int directional = left | right; final boolean wantLeftOrRight = (modifiers & directional) != 0; if (wantBasic) { if (wantLeftOrRight) { throw new IllegalArgumentException("modifiers must not contain " + metaStateToString(basic) + " combined with " + metaStateToString(left) + " or " + metaStateToString(right)); } return metaState & ~directional; } else if (wantLeftOrRight) { return metaState & ~basic; } else { return metaState; } } /** * Returns true if no modifier keys are pressed. * <p> * For the purposes of this function, {@link #KEYCODE_CAPS_LOCK}, * {@link #KEYCODE_SCROLL_LOCK}, and {@link #KEYCODE_NUM_LOCK} are * not considered modifier keys. Consequently, this function ignores * {@link #META_CAPS_LOCK_ON}, {@link #META_SCROLL_LOCK_ON} and {@link #META_NUM_LOCK_ON}. * </p><p> * The meta state is normalized prior to comparison using {@link #normalizeMetaState(int)}. * </p> * * @return True if no modifier keys are pressed. * @see #metaStateHasNoModifiers */ public final boolean hasNoModifiers() { return metaStateHasNoModifiers(mMetaState); } /** * Returns true if only the specified modifiers keys are pressed. * Returns false if a different combination of modifier keys are pressed. * <p> * For the purposes of this function, {@link #KEYCODE_CAPS_LOCK}, * {@link #KEYCODE_SCROLL_LOCK}, and {@link #KEYCODE_NUM_LOCK} are * not considered modifier keys. Consequently, this function ignores * {@link #META_CAPS_LOCK_ON}, {@link #META_SCROLL_LOCK_ON} and {@link #META_NUM_LOCK_ON}. * </p><p> * If the specified modifier mask includes directional modifiers, such as * {@link #META_SHIFT_LEFT_ON}, then this method ensures that the * modifier is pressed on that side. * If the specified modifier mask includes non-directional modifiers, such as * {@link #META_SHIFT_ON}, then this method ensures that the modifier * is pressed on either side. * If the specified modifier mask includes both directional and non-directional modifiers * for the same type of key, such as {@link #META_SHIFT_ON} and {@link #META_SHIFT_LEFT_ON}, * then this method throws an illegal argument exception. * </p> * * @param modifiers The meta state of the modifier keys to check. May be a combination * of modifier meta states as defined by {@link #getModifierMetaStateMask()}. May be 0 to * ensure that no modifier keys are pressed. * @return True if only the specified modifier keys are pressed. * @throws IllegalArgumentException if the modifiers parameter contains invalid modifiers * @see #metaStateHasModifiers */ public final boolean hasModifiers(int modifiers) { return metaStateHasModifiers(mMetaState, modifiers); } /** * <p>Returns the pressed state of the ALT meta key.</p> * * @return true if the ALT key is pressed, false otherwise * * @see #KEYCODE_ALT_LEFT * @see #KEYCODE_ALT_RIGHT * @see #META_ALT_ON */ public final boolean isAltPressed() { return (mMetaState & META_ALT_ON) != 0; } /** * <p>Returns the pressed state of the SHIFT meta key.</p> * * @return true if the SHIFT key is pressed, false otherwise * * @see #KEYCODE_SHIFT_LEFT * @see #KEYCODE_SHIFT_RIGHT * @see #META_SHIFT_ON */ public final boolean isShiftPressed() { return (mMetaState & META_SHIFT_ON) != 0; } /** * <p>Returns the pressed state of the SYM meta key.</p> * * @return true if the SYM key is pressed, false otherwise * * @see #KEYCODE_SYM * @see #META_SYM_ON */ public final boolean isSymPressed() { return (mMetaState & META_SYM_ON) != 0; } /** * <p>Returns the pressed state of the CTRL meta key.</p> * * @return true if the CTRL key is pressed, false otherwise * * @see #KEYCODE_CTRL_LEFT * @see #KEYCODE_CTRL_RIGHT * @see #META_CTRL_ON */ public final boolean isCtrlPressed() { return (mMetaState & META_CTRL_ON) != 0; } /** * <p>Returns the pressed state of the META meta key.</p> * * @return true if the META key is pressed, false otherwise * * @see #KEYCODE_META_LEFT * @see #KEYCODE_META_RIGHT * @see #META_META_ON */ public final boolean isMetaPressed() { return (mMetaState & META_META_ON) != 0; } /** * <p>Returns the pressed state of the FUNCTION meta key.</p> * * @return true if the FUNCTION key is pressed, false otherwise * * @see #KEYCODE_FUNCTION * @see #META_FUNCTION_ON */ public final boolean isFunctionPressed() { return (mMetaState & META_FUNCTION_ON) != 0; } /** * <p>Returns the locked state of the CAPS LOCK meta key.</p> * * @return true if the CAPS LOCK key is on, false otherwise * * @see #KEYCODE_CAPS_LOCK * @see #META_CAPS_LOCK_ON */ public final boolean isCapsLockOn() { return (mMetaState & META_CAPS_LOCK_ON) != 0; } /** * <p>Returns the locked state of the NUM LOCK meta key.</p> * * @return true if the NUM LOCK key is on, false otherwise * * @see #KEYCODE_NUM_LOCK * @see #META_NUM_LOCK_ON */ public final boolean isNumLockOn() { return (mMetaState & META_NUM_LOCK_ON) != 0; } /** * <p>Returns the locked state of the SCROLL LOCK meta key.</p> * * @return true if the SCROLL LOCK key is on, false otherwise * * @see #KEYCODE_SCROLL_LOCK * @see #META_SCROLL_LOCK_ON */ public final boolean isScrollLockOn() { return (mMetaState & META_SCROLL_LOCK_ON) != 0; } /** * Retrieve the action of this key event. May be either * {@link #ACTION_DOWN}, {@link #ACTION_UP}, or {@link #ACTION_MULTIPLE}. * * @return The event action: ACTION_DOWN, ACTION_UP, or ACTION_MULTIPLE. */ public final int getAction() { return mAction; } /** * For {@link #ACTION_UP} events, indicates that the event has been * canceled as per {@link #FLAG_CANCELED}. */ public final boolean isCanceled() { return (mFlags & FLAG_CANCELED) != 0; } /** * Set {@link #FLAG_CANCELED} flag for the key event. * * @hide */ @Override public final void cancel() { mFlags |= FLAG_CANCELED; } /** * Call this during {@link Callback#onKeyDown} to have the system track * the key through its final up (possibly including a long press). Note * that only one key can be tracked at a time -- if another key down * event is received while a previous one is being tracked, tracking is * stopped on the previous event. */ public final void startTracking() { mFlags |= FLAG_START_TRACKING; } /** * For {@link #ACTION_UP} events, indicates that the event is still being * tracked from its initial down event as per * {@link #FLAG_TRACKING}. */ public final boolean isTracking() { return (mFlags & FLAG_TRACKING) != 0; } /** * For {@link #ACTION_DOWN} events, indicates that the event has been * canceled as per {@link #FLAG_LONG_PRESS}. */ public final boolean isLongPress() { return (mFlags & FLAG_LONG_PRESS) != 0; } /** * Retrieve the key code of the key event. This is the physical key that * was pressed, <em>not</em> the Unicode character. * * @return The key code of the event. */ public final int getKeyCode() { return mKeyCode; } /** * For the special case of a {@link #ACTION_MULTIPLE} event with key * code of {@link #KEYCODE_UNKNOWN}, this is a raw string of characters * associated with the event. In all other cases it is null. * * @return Returns a String of 1 or more characters associated with * the event. */ public final String getCharacters() { return mCharacters; } /** * Retrieve the hardware key id of this key event. These values are not * reliable and vary from device to device. * * {@more} * Mostly this is here for debugging purposes. */ public final int getScanCode() { return mScanCode; } /** * Retrieve the repeat count of the event. For both key up and key down * events, this is the number of times the key has repeated with the first * down starting at 0 and counting up from there. For multiple key * events, this is the number of down/up pairs that have occurred. * * @return The number of times the key has repeated. */ public final int getRepeatCount() { return mRepeatCount; } /** * Retrieve the time of the most recent key down event, * in the {@link android.os.SystemClock#uptimeMillis} time base. If this * is a down event, this will be the same as {@link #getEventTime()}. * Note that when chording keys, this value is the down time of the * most recently pressed key, which may <em>not</em> be the same physical * key of this event. * * @return Returns the most recent key down time, in the * {@link android.os.SystemClock#uptimeMillis} time base */ public final long getDownTime() { return mDownTime; } /** * Retrieve the time this event occurred, * in the {@link android.os.SystemClock#uptimeMillis} time base. * * @return Returns the time this event occurred, * in the {@link android.os.SystemClock#uptimeMillis} time base. */ @Override public final long getEventTime() { return mEventTime; } /** * Retrieve the time this event occurred, * in the {@link android.os.SystemClock#uptimeMillis} time base but with * nanosecond (instead of millisecond) precision. * <p> * The value is in nanosecond precision but it may not have nanosecond accuracy. * </p> * * @return Returns the time this event occurred, * in the {@link android.os.SystemClock#uptimeMillis} time base but with * nanosecond (instead of millisecond) precision. * * @hide */ @Override public final long getEventTimeNano() { return mEventTime * 1000000L; } /** * Renamed to {@link #getDeviceId}. * * @hide * @deprecated use {@link #getDeviceId()} instead. */ @Deprecated public final int getKeyboardDevice() { return mDeviceId; } /** * Gets the {@link KeyCharacterMap} associated with the keyboard device. * * @return The associated key character map. * @throws {@link KeyCharacterMap.UnavailableException} if the key character map * could not be loaded because it was malformed or the default key character map * is missing from the system. * * @see KeyCharacterMap#load */ public final KeyCharacterMap getKeyCharacterMap() { return KeyCharacterMap.load(mDeviceId); } /** * Gets the primary character for this key. * In other words, the label that is physically printed on it. * * @return The display label character, or 0 if none (eg. for non-printing keys). */ public char getDisplayLabel() { return getKeyCharacterMap().getDisplayLabel(mKeyCode); } /** * Gets the Unicode character generated by the specified key and meta * key state combination. * <p> * Returns the Unicode character that the specified key would produce * when the specified meta bits (see {@link MetaKeyKeyListener}) * were active. * </p><p> * Returns 0 if the key is not one that is used to type Unicode * characters. * </p><p> * If the return value has bit {@link KeyCharacterMap#COMBINING_ACCENT} set, the * key is a "dead key" that should be combined with another to * actually produce a character -- see {@link KeyCharacterMap#getDeadChar} -- * after masking with {@link KeyCharacterMap#COMBINING_ACCENT_MASK}. * </p> * * @return The associated character or combining accent, or 0 if none. */ public int getUnicodeChar() { return getUnicodeChar(mMetaState); } /** * Gets the Unicode character generated by the specified key and meta * key state combination. * <p> * Returns the Unicode character that the specified key would produce * when the specified meta bits (see {@link MetaKeyKeyListener}) * were active. * </p><p> * Returns 0 if the key is not one that is used to type Unicode * characters. * </p><p> * If the return value has bit {@link KeyCharacterMap#COMBINING_ACCENT} set, the * key is a "dead key" that should be combined with another to * actually produce a character -- see {@link KeyCharacterMap#getDeadChar} -- * after masking with {@link KeyCharacterMap#COMBINING_ACCENT_MASK}. * </p> * * @param metaState The meta key modifier state. * @return The associated character or combining accent, or 0 if none. */ public int getUnicodeChar(int metaState) { return getKeyCharacterMap().get(mKeyCode, metaState); } /** * Get the character conversion data for a given key code. * * @param results A {@link KeyCharacterMap.KeyData} instance that will be * filled with the results. * @return True if the key was mapped. If the key was not mapped, results is not modified. * * @deprecated instead use {@link #getDisplayLabel()}, * {@link #getNumber()} or {@link #getUnicodeChar(int)}. */ @Deprecated public boolean getKeyData(KeyData results) { return getKeyCharacterMap().getKeyData(mKeyCode, results); } /** * Gets the first character in the character array that can be generated * by the specified key code. * <p> * This is a convenience function that returns the same value as * {@link #getMatch(char[],int) getMatch(chars, 0)}. * </p> * * @param chars The array of matching characters to consider. * @return The matching associated character, or 0 if none. */ public char getMatch(char[] chars) { return getMatch(chars, 0); } /** * Gets the first character in the character array that can be generated * by the specified key code. If there are multiple choices, prefers * the one that would be generated with the specified meta key modifier state. * * @param chars The array of matching characters to consider. * @param metaState The preferred meta key modifier state. * @return The matching associated character, or 0 if none. */ public char getMatch(char[] chars, int metaState) { return getKeyCharacterMap().getMatch(mKeyCode, chars, metaState); } /** * Gets the number or symbol associated with the key. * <p> * The character value is returned, not the numeric value. * If the key is not a number, but is a symbol, the symbol is retuned. * </p><p> * This method is intended to to support dial pads and other numeric or * symbolic entry on keyboards where certain keys serve dual function * as alphabetic and symbolic keys. This method returns the number * or symbol associated with the key independent of whether the user * has pressed the required modifier. * </p><p> * For example, on one particular keyboard the keys on the top QWERTY row generate * numbers when ALT is pressed such that ALT-Q maps to '1'. So for that keyboard * when {@link #getNumber} is called with {@link KeyEvent#KEYCODE_Q} it returns '1' * so that the user can type numbers without pressing ALT when it makes sense. * </p> * * @return The associated numeric or symbolic character, or 0 if none. */ public char getNumber() { return getKeyCharacterMap().getNumber(mKeyCode); } /** * Returns true if this key produces a glyph. * * @return True if the key is a printing key. */ public boolean isPrintingKey() { return getKeyCharacterMap().isPrintingKey(mKeyCode); } /** * @deprecated Use {@link #dispatch(Callback, DispatcherState, Object)} instead. */ @Deprecated public final boolean dispatch(Callback receiver) { return dispatch(receiver, null, null); } /** * Deliver this key event to a {@link Callback} interface. If this is * an ACTION_MULTIPLE event and it is not handled, then an attempt will * be made to deliver a single normal event. * * @param receiver The Callback that will be given the event. * @param state State information retained across events. * @param target The target of the dispatch, for use in tracking. * * @return The return value from the Callback method that was called. */ public final boolean dispatch(Callback receiver, DispatcherState state, Object target) { switch (mAction) { case ACTION_DOWN: { mFlags &= ~FLAG_START_TRACKING; if (DEBUG) Log.v(TAG, "Key down to " + target + " in " + state + ": " + this); boolean res = receiver.onKeyDown(mKeyCode, this); if (state != null) { if (res && mRepeatCount == 0 && (mFlags & FLAG_START_TRACKING) != 0) { if (DEBUG) Log.v(TAG, " Start tracking!"); state.startTracking(this, target); } else if (isLongPress() && state.isTracking(this)) { try { if (receiver.onKeyLongPress(mKeyCode, this)) { if (DEBUG) Log.v(TAG, " Clear from long press!"); state.performedLongPress(this); res = true; } } catch (AbstractMethodError e) { } } } return res; } case ACTION_UP: if (DEBUG) Log.v(TAG, "Key up to " + target + " in " + state + ": " + this); if (state != null) { state.handleUpEvent(this); } return receiver.onKeyUp(mKeyCode, this); case ACTION_MULTIPLE: final int count = mRepeatCount; final int code = mKeyCode; if (receiver.onKeyMultiple(code, count, this)) { return true; } if (code != KeyEvent.KEYCODE_UNKNOWN) { mAction = ACTION_DOWN; mRepeatCount = 0; boolean handled = receiver.onKeyDown(code, this); if (handled) { mAction = ACTION_UP; receiver.onKeyUp(code, this); } mAction = ACTION_MULTIPLE; mRepeatCount = count; return handled; } return false; } return false; } /** * Use with {@link KeyEvent#dispatch(Callback, DispatcherState, Object)} * for more advanced key dispatching, such as long presses. */ public static class DispatcherState { int mDownKeyCode; Object mDownTarget; SparseIntArray mActiveLongPresses = new SparseIntArray(); /** * Reset back to initial state. */ public void reset() { if (DEBUG) Log.v(TAG, "Reset: " + this); mDownKeyCode = 0; mDownTarget = null; mActiveLongPresses.clear(); } /** * Stop any tracking associated with this target. */ public void reset(Object target) { if (mDownTarget == target) { if (DEBUG) Log.v(TAG, "Reset in " + target + ": " + this); mDownKeyCode = 0; mDownTarget = null; } } /** * Start tracking the key code associated with the given event. This * can only be called on a key down. It will allow you to see any * long press associated with the key, and will result in * {@link KeyEvent#isTracking} return true on the long press and up * events. * * <p>This is only needed if you are directly dispatching events, rather * than handling them in {@link Callback#onKeyDown}. */ public void startTracking(KeyEvent event, Object target) { if (event.getAction() != ACTION_DOWN) { throw new IllegalArgumentException("Can only start tracking on a down event"); } if (DEBUG) Log.v(TAG, "Start trackingt in " + target + ": " + this); mDownKeyCode = event.getKeyCode(); mDownTarget = target; } /** * Return true if the key event is for a key code that is currently * being tracked by the dispatcher. */ public boolean isTracking(KeyEvent event) { return mDownKeyCode == event.getKeyCode(); } /** * Keep track of the given event's key code as having performed an * action with a long press, so no action should occur on the up. * <p>This is only needed if you are directly dispatching events, rather * than handling them in {@link Callback#onKeyLongPress}. */ public void performedLongPress(KeyEvent event) { mActiveLongPresses.put(event.getKeyCode(), 1); } /** * Handle key up event to stop tracking. This resets the dispatcher state, * and updates the key event state based on it. * <p>This is only needed if you are directly dispatching events, rather * than handling them in {@link Callback#onKeyUp}. */ public void handleUpEvent(KeyEvent event) { final int keyCode = event.getKeyCode(); if (DEBUG) Log.v(TAG, "Handle key up " + event + ": " + this); int index = mActiveLongPresses.indexOfKey(keyCode); if (index >= 0) { if (DEBUG) Log.v(TAG, " Index: " + index); event.mFlags |= FLAG_CANCELED | FLAG_CANCELED_LONG_PRESS; mActiveLongPresses.removeAt(index); } if (mDownKeyCode == keyCode) { if (DEBUG) Log.v(TAG, " Tracking!"); event.mFlags |= FLAG_TRACKING; mDownKeyCode = 0; mDownTarget = null; } } } @Override public String toString() { StringBuilder msg = new StringBuilder(); msg.append("KeyEvent { action=").append(actionToString(mAction)); msg.append(", keyCode=").append(keyCodeToString(mKeyCode)); msg.append(", scanCode=").append(mScanCode); if (mCharacters != null) { msg.append(", characters=\"").append(mCharacters).append("\""); } msg.append(", metaState=").append(metaStateToString(mMetaState)); msg.append(", flags=0x").append(Integer.toHexString(mFlags)); msg.append(", repeatCount=").append(mRepeatCount); msg.append(", eventTime=").append(mEventTime); msg.append(", downTime=").append(mDownTime); msg.append(", deviceId=").append(mDeviceId); msg.append(", source=0x").append(Integer.toHexString(mSource)); msg.append(" }"); return msg.toString(); } /** * Returns a string that represents the symbolic name of the specified action * such as "ACTION_DOWN", or an equivalent numeric constant such as "35" if unknown. * * @param action The action. * @return The symbolic name of the specified action. * @hide */ @UnsupportedAppUsage public static String actionToString(int action) { switch (action) { case ACTION_DOWN: return "ACTION_DOWN"; case ACTION_UP: return "ACTION_UP"; case ACTION_MULTIPLE: return "ACTION_MULTIPLE"; default: return Integer.toString(action); } } /** * Returns a string that represents the symbolic name of the specified keycode * such as "KEYCODE_A", "KEYCODE_DPAD_UP", or an equivalent numeric constant * such as "1001" if unknown. * * @param keyCode The key code. * @return The symbolic name of the specified keycode. * * @see KeyCharacterMap#getDisplayLabel */ public static String keyCodeToString(int keyCode) { String symbolicName = nativeKeyCodeToString(keyCode); return symbolicName != null ? LABEL_PREFIX + symbolicName : Integer.toString(keyCode); } /** * Gets a keycode by its symbolic name such as "KEYCODE_A" or an equivalent * numeric constant such as "1001". * * @param symbolicName The symbolic name of the keycode. * @return The keycode or {@link #KEYCODE_UNKNOWN} if not found. * @see #keycodeToString(int) */ public static int keyCodeFromString(String symbolicName) { if (symbolicName.startsWith(LABEL_PREFIX)) { symbolicName = symbolicName.substring(LABEL_PREFIX.length()); int keyCode = nativeKeyCodeFromString(symbolicName); if (keyCode > 0) { return keyCode; } } try { return Integer.parseInt(symbolicName, 10); } catch (NumberFormatException ex) { return KEYCODE_UNKNOWN; } } /** * Returns a string that represents the symbolic name of the specified combined meta * key modifier state flags such as "0", "META_SHIFT_ON", * "META_ALT_ON|META_SHIFT_ON" or an equivalent numeric constant such as "0x10000000" * if unknown. * * @param metaState The meta state. * @return The symbolic name of the specified combined meta state flags. * @hide */ public static String metaStateToString(int metaState) { if (metaState == 0) { return "0"; } StringBuilder result = null; int i = 0; while (metaState != 0) { final boolean isSet = (metaState & 1) != 0; metaState >>>= 1; // unsigned shift! if (isSet) { final String name = META_SYMBOLIC_NAMES[i]; if (result == null) { if (metaState == 0) { return name; } result = new StringBuilder(name); } else { result.append('|'); result.append(name); } } i += 1; } return result.toString(); } public static final Parcelable.Creator<KeyEvent> CREATOR = new Parcelable.Creator<KeyEvent>() { @Override public KeyEvent createFromParcel(Parcel in) { in.readInt(); // skip token, we already know this is a KeyEvent return KeyEvent.createFromParcelBody(in); } @Override public KeyEvent[] newArray(int size) { return new KeyEvent[size]; } }; /** @hide */ public static KeyEvent createFromParcelBody(Parcel in) { return new KeyEvent(in); } private KeyEvent(Parcel in) { mDeviceId = in.readInt(); mSource = in.readInt(); mAction = in.readInt(); mKeyCode = in.readInt(); mRepeatCount = in.readInt(); mMetaState = in.readInt(); mScanCode = in.readInt(); mFlags = in.readInt(); mDownTime = in.readLong(); mEventTime = in.readLong(); } @Override public void writeToParcel(Parcel out, int flags) { out.writeInt(PARCEL_TOKEN_KEY_EVENT); out.writeInt(mDeviceId); out.writeInt(mSource); out.writeInt(mAction); out.writeInt(mKeyCode); out.writeInt(mRepeatCount); out.writeInt(mMetaState); out.writeInt(mScanCode); out.writeInt(mFlags); out.writeLong(mDownTime); out.writeLong(mEventTime); } }