Java tutorial
/* * Copyright (C) 2010 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 com.tandong.sa.sherlock.widget; import android.app.PendingIntent; import android.app.SearchManager; import android.app.SearchableInfo; import android.content.ActivityNotFoundException; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.content.pm.PackageManager; import android.content.pm.ResolveInfo; import android.content.res.Configuration; import android.content.res.Resources; import android.content.res.TypedArray; import android.database.Cursor; import android.graphics.Rect; import android.graphics.drawable.Drawable; import android.net.Uri; import android.os.Build; import android.os.Bundle; import android.os.ResultReceiver; import android.speech.RecognizerIntent; import android.support.v4.view.KeyEventCompat; import android.support.v4.widget.CursorAdapter; import android.text.Editable; import android.text.InputType; import android.text.Spannable; import android.text.SpannableStringBuilder; import android.text.TextUtils; import android.text.TextWatcher; import android.text.style.ImageSpan; import android.util.AttributeSet; import android.util.Log; import android.util.TypedValue; import android.view.KeyEvent; import android.view.LayoutInflater; import android.view.View; import android.view.ViewTreeObserver; import android.view.accessibility.AccessibilityEvent; import android.view.accessibility.AccessibilityNodeInfo; import android.view.inputmethod.EditorInfo; import android.view.inputmethod.InputMethodManager; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.AdapterView.OnItemSelectedListener; import android.widget.AutoCompleteTextView; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.TextView; import android.widget.TextView.OnEditorActionListener; import com.tandong.sa.sherlock.view.CollapsibleActionView; import java.lang.reflect.Method; import java.util.WeakHashMap; import static com.tandong.sa.sherlock.widget.SuggestionsAdapter.getColumnString; /** * A widget that provides a user interface for the user to enter a search query * and submit a request to a search provider. Shows a list of query suggestions * or results, if available, and allows the user to pick a suggestion or result * to launch into. * * <p> * When the SearchView is used in an ActionBar as an action view for a * collapsible menu item, it needs to be set to iconified by default using * {@link #setIconifiedByDefault(boolean) setIconifiedByDefault(true)}. This is * the default, so nothing needs to be done. * </p> * <p> * If you want the search field to always be visible, then call * setIconifiedByDefault(false). * </p> * * <div class="special reference"> <h3>Developer Guides</h3> * <p> * For information about using {@code SearchView}, read the * <a href="{@docRoot}, read the <a * href="{@docRoot}, read the <a * href="{@docRoot}, read the <a href="{@docRoot} * , read the <a href="{@docRoot}, read the <a href="{@docRoot}, read the <a * href="{@docRoot}, read the <a href="{@docRoot} * , read the <a href="{@docRoot}, read the <a href="{@docRoot}, read the <a * href="{@docRoot}, read the <a href="{@docRoot} , read the <a href="{@docRoot} * , read the <a href="{@docRoot}, read the <a href="{@docRoot}, read the <a * href="{@docRoot}, read the <a * href="{@docRoot}, read the <a href="{@docRoot}, read the <a href="{@docRoot}, * read the <a href="{@docRoot} , read the <a href="{@docRoot}, read the <a * href="{@docRoot}, read the <a 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href="{@docRoot}, read the <a href="{@docRoot} , read the <a href="{@docRoot} * , read the <a href="{@docRoot}, read the <a href="{@docRoot}, read the <a * href="{@docRoot} , read the <a href="{@docRoot} , read the <a * href="{@docRoot}, read the <a href="{@docRoot}, read the <a href="{@docRoot} * , read the <a href="{@docRoot}, read the <a href="{@docRoot}, read the <a * href="{@docRoot}, read the <a href="{@docRoot} , read the <a href="{@docRoot} * , read the <a href="{@docRoot}, read the <a href="{@docRoot}, read the <a * href="{@docRoot} , read the <a href="{@docRoot}, read the <a href="{@docRoot} * , read the <a href="{@docRoot}, read the <a href="{@docRoot} , read the <a * href="{@docRoot} , read the <a href="{@docRoot}, read the <a href="{@docRoot} * , read the <a href="{@docRoot}, read the <a href="{@docRoot}, read the <a * href="{@docRoot}, read the <a href="{@docRoot}, read the <a href="{@docRoot} * , read the <a href="{@docRoot}, read the <a href="{@docRoot}, read the <a * href="{@docRoot}, read the <a href="{@docRoot} , read the <a href="{@docRoot} * , read the <a href="{@docRoot}, read the <a href="{@docRoot}, read the <a * href="{@docRoot} , read the <a href="{@docRoot} , read the <a * href="{@docRoot}, read the <a href="{@docRoot}, read the <a href="{@docRoot}, * read the <a href="{@docRoot}, read the <a href="{@docRoot}, read the <a * href="{@docRoot}, read the <a href="{@docRoot} , read the <a href="{@docRoot} * , read the <a href="{@docRoot}, read the <a href="{@docRoot}, read the <a * href="{@docRoot} , read the <a href="{@docRoot}, read the <a href="{@docRoot} * , read the <a href="{@docRoot}, read the <a href="{@docRoot} , read the <a * href="{@docRoot} , read the <a href="{@docRoot}, read the <a href="{@docRoot} * , read the <a href="{@docRoot}, read the <a href="{@docRoot}, read the <a * href="{@docRoot}, read the <a href="{@docRoot}, read the <a href="{@docRoot} * , read the <a href="{@docRoot}, read the <a href="{@docRoot}, read the <a * href="{@docRoot}, read the <a href="{@docRoot} , read the <a href="{@docRoot} * , read the <a href="{@docRoot}, read the <a href="{@docRoot}, read the <a * href="{@docRoot} , read the <a href="{@docRoot} , read the <a * href="{@docRoot}, read the <a href="{@docRoot}, read the <a href="{@docRoot} * guide/topics/search/index.html">Search</a> developer guide. * </p> * </div> * * @see android.view.MenuItem#SHOW_AS_ACTION_COLLAPSE_ACTION_VIEW * @attr ref android.R.styleable#SearchView_iconifiedByDefault * @attr ref android.R.styleable#SearchView_imeOptions * @attr ref android.R.styleable#SearchView_inputType * @attr ref android.R.styleable#SearchView_maxWidth * @attr ref android.R.styleable#SearchView_queryHint */ public class SearchView extends LinearLayout implements CollapsibleActionView { private static final boolean DBG = false; private static final String LOG_TAG = "SearchView"; /** * Private constant for removing the microphone in the keyboard. */ private static final String IME_OPTION_NO_MICROPHONE = "nm"; private OnQueryTextListener mOnQueryChangeListener; private OnCloseListener mOnCloseListener; private OnFocusChangeListener mOnQueryTextFocusChangeListener; private OnSuggestionListener mOnSuggestionListener; private OnClickListener mOnSearchClickListener; private boolean mIconifiedByDefault; private boolean mIconified; private CursorAdapter mSuggestionsAdapter; private View mSearchButton; private View mSubmitButton; private View mSearchPlate; private View mSubmitArea; private ImageView mCloseButton; private View mSearchEditFrame; private View mVoiceButton; private SearchAutoComplete mQueryTextView; private View mDropDownAnchor; private ImageView mSearchHintIcon; private boolean mSubmitButtonEnabled; private CharSequence mQueryHint; private boolean mQueryRefinement; private boolean mClearingFocus; private int mMaxWidth; private boolean mVoiceButtonEnabled; private CharSequence mOldQueryText; private CharSequence mUserQuery; private boolean mExpandedInActionView; private int mCollapsedImeOptions; private SearchableInfo mSearchable; private Bundle mAppSearchData; private Context c; /* * SearchView can be set expanded before the IME is ready to be shown during * initial UI setup. The show operation is asynchronous to account for this. */ private Runnable mShowImeRunnable = new Runnable() { public void run() { InputMethodManager imm = (InputMethodManager) getContext() .getSystemService(Context.INPUT_METHOD_SERVICE); if (imm != null) { showSoftInputUnchecked(SearchView.this, imm, 0); } } }; private Runnable mUpdateDrawableStateRunnable = new Runnable() { public void run() { updateFocusedState(); } }; private Runnable mReleaseCursorRunnable = new Runnable() { public void run() { if (mSuggestionsAdapter != null && mSuggestionsAdapter instanceof SuggestionsAdapter) { mSuggestionsAdapter.changeCursor(null); } } }; // For voice searching private final Intent mVoiceWebSearchIntent; private final Intent mVoiceAppSearchIntent; // A weak map of drawables we've gotten from other packages, so we don't // load them // more than once. private final WeakHashMap<String, Drawable.ConstantState> mOutsideDrawablesCache = new WeakHashMap<String, Drawable.ConstantState>(); /** * Callbacks for changes to the query text. */ public interface OnQueryTextListener { /** * Called when the user submits the query. This could be due to a key * press on the keyboard or due to pressing a submit button. The * listener can override the standard behavior by returning true to * indicate that it has handled the submit request. Otherwise return * false to let the SearchView handle the submission by launching any * associated intent. * * @param query * the query text that is to be submitted * * @return true if the query has been handled by the listener, false to * let the SearchView perform the default action. */ boolean onQueryTextSubmit(String query); /** * Called when the query text is changed by the user. * * @param newText * the new content of the query text field. * * @return false if the SearchView should perform the default action of * showing any suggestions if available, true if the action was * handled by the listener. */ boolean onQueryTextChange(String newText); } public interface OnCloseListener { /** * The user is attempting to close the SearchView. * * @return true if the listener wants to override the default behavior * of clearing the text field and dismissing it, false * otherwise. */ boolean onClose(); } /** * Callback interface for selection events on suggestions. These callbacks * are only relevant when a SearchableInfo has been specified by * {@link #setSearchableInfo}. */ public interface OnSuggestionListener { /** * Called when a suggestion was selected by navigating to it. * * @param position * the absolute position in the list of suggestions. * * @return true if the listener handles the event and wants to override * the default behavior of possibly rewriting the query based on * the selected item, false otherwise. */ boolean onSuggestionSelect(int position); /** * Called when a suggestion was clicked. * * @param position * the absolute position of the clicked item in the list of * suggestions. * * @return true if the listener handles the event and wants to override * the default behavior of launching any intent or submitting a * search query specified on that item. Return false otherwise. */ boolean onSuggestionClick(int position); } public SearchView(Context context) { this(context, null); this.c = context; } public SearchView(Context context, AttributeSet attrs) { super(context, attrs); this.c = context; if (Build.VERSION.SDK_INT < Build.VERSION_CODES.FROYO) { throw new IllegalStateException("SearchView is API 8+ only."); } LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); inflater.inflate(getResources().getIdentifier("abs__search_view", "layout", context.getPackageName()), this, true); // inflater.inflate(R.layout.abs__search_view, this, true); mSearchButton = findViewById( getResources().getIdentifier("abs__search_button", "id", context.getPackageName())); // mSearchButton = findViewById(R.id.abs__search_button); mQueryTextView = (SearchAutoComplete) findViewById( getResources().getIdentifier("abs__search_src_text", "id", context.getPackageName())); // mQueryTextView = (SearchAutoComplete) // findViewById(R.id.abs__search_src_text); mQueryTextView.setSearchView(this); mSearchEditFrame = findViewById( getResources().getIdentifier("abs__search_edit_frame", "id", context.getPackageName())); // mSearchEditFrame = findViewById(R.id.abs__search_edit_frame); mSearchPlate = findViewById( getResources().getIdentifier("abs__search_plate", "id", context.getPackageName())); // mSearchPlate = findViewById(R.id.abs__search_plate); mSubmitArea = findViewById( getResources().getIdentifier("abs__submit_area", "id", context.getPackageName())); // mSubmitArea = findViewById(R.id.abs__submit_area); mSubmitButton = findViewById( getResources().getIdentifier("abs__search_go_btn", "id", context.getPackageName())); // mSubmitButton = findViewById(R.id.abs__search_go_btn); mCloseButton = (ImageView) findViewById( getResources().getIdentifier("abs__search_close_btn", "id", context.getPackageName())); // mCloseButton = (ImageView) findViewById(R.id.abs__search_close_btn); mVoiceButton = findViewById( getResources().getIdentifier("abs__search_voice_btn", "id", context.getPackageName())); // mVoiceButton = findViewById(R.id.abs__search_voice_btn); mSearchHintIcon = (ImageView) findViewById( getResources().getIdentifier("abs__search_mag_icon", "id", context.getPackageName())); // mSearchHintIcon = (ImageView) // findViewById(R.id.abs__search_mag_icon); mSearchButton.setOnClickListener(mOnClickListener); mCloseButton.setOnClickListener(mOnClickListener); mSubmitButton.setOnClickListener(mOnClickListener); mVoiceButton.setOnClickListener(mOnClickListener); mQueryTextView.setOnClickListener(mOnClickListener); mQueryTextView.addTextChangedListener(mTextWatcher); mQueryTextView.setOnEditorActionListener(mOnEditorActionListener); mQueryTextView.setOnItemClickListener(mOnItemClickListener); mQueryTextView.setOnItemSelectedListener(mOnItemSelectedListener); mQueryTextView.setOnKeyListener(mTextKeyListener); // Inform any listener of focus changes mQueryTextView.setOnFocusChangeListener(new OnFocusChangeListener() { public void onFocusChange(View v, boolean hasFocus) { if (mOnQueryTextFocusChangeListener != null) { mOnQueryTextFocusChangeListener.onFocusChange(SearchView.this, hasFocus); } } }); TypedArray a = context.obtainStyledAttributes(attrs, new int[] { getResources().getIdentifier("SherlockSearchView", "styleable", context.getPackageName()) }, 0, 0); // R.styleable.SherlockSearchView, 0, 0); setIconifiedByDefault(a.getBoolean(getResources().getIdentifier("SherlockSearchView_iconifiedByDefault", "styleable", context.getPackageName()), true)); // R.styleable.SherlockSearchView_iconifiedByDefault, true)); int maxWidth = a.getDimensionPixelSize(getResources().getIdentifier("SherlockSearchView_android_maxWidth", "styleable", context.getPackageName()), -1); // R.styleable.SherlockSearchView_android_maxWidth, -1); if (maxWidth != -1) { setMaxWidth(maxWidth); } CharSequence queryHint = a.getText(getResources().getIdentifier("SherlockSearchView_queryHint", "styleable", context.getPackageName())); // .getText(R.styleable.SherlockSearchView_queryHint); if (!TextUtils.isEmpty(queryHint)) { setQueryHint(queryHint); } int imeOptions = a.getInt(getResources().getIdentifier("SherlockSearchView_android_imeOptions", "styleable", context.getPackageName()), -1); // R.styleable.SherlockSearchView_android_imeOptions, -1); if (imeOptions != -1) { setImeOptions(imeOptions); } int inputType = a.getInt(getResources().getIdentifier("SherlockSearchView_android_inputType", "styleable", context.getPackageName()), -1); // R.styleable.SherlockSearchView_android_inputType, -1); if (inputType != -1) { setInputType(inputType); } a.recycle(); boolean focusable = true; a = context.obtainStyledAttributes(attrs, new int[] { getResources().getIdentifier("SherlockView", "styleable", context.getPackageName()) }, 0, // a = context.obtainStyledAttributes(attrs, // R.styleable.SherlockView, 0, 0); focusable = a.getBoolean( getResources().getIdentifier("SherlockView_android_focusable", "styleable", context.getPackageName()), // focusable = // a.getBoolean(R.styleable.SherlockView_android_focusable, focusable); a.recycle(); setFocusable(focusable); // Save voice intent for later queries/launching mVoiceWebSearchIntent = new Intent(RecognizerIntent.ACTION_WEB_SEARCH); mVoiceWebSearchIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); mVoiceWebSearchIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_WEB_SEARCH); mVoiceAppSearchIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH); mVoiceAppSearchIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); mDropDownAnchor = findViewById(mQueryTextView.getDropDownAnchor()); if (mDropDownAnchor != null) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) { mDropDownAnchor.addOnLayoutChangeListener(new OnLayoutChangeListener() { @Override public void onLayoutChange(View v, int left, int top, int right, int bottom, int oldLeft, int oldTop, int oldRight, int oldBottom) { adjustDropDownSizeAndPosition(); } }); } else { mDropDownAnchor.getViewTreeObserver() .addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() { @Override public void onGlobalLayout() { adjustDropDownSizeAndPosition(); } }); } } updateViewsVisibility(mIconifiedByDefault); updateQueryHint(); } /** * Sets the SearchableInfo for this SearchView. Properties in the * SearchableInfo are used to display labels, hints, suggestions, create * intents for launching search results screens and controlling other * affordances such as a voice button. * * @param searchable * a SearchableInfo can be retrieved from the SearchManager, for * a specific activity or a global search provider. */ public void setSearchableInfo(SearchableInfo searchable) { mSearchable = searchable; if (mSearchable != null) { updateSearchAutoComplete(); updateQueryHint(); } // Cache the voice search capability mVoiceButtonEnabled = hasVoiceSearch(); if (mVoiceButtonEnabled) { // Disable the microphone on the keyboard, as a mic is displayed // near the text box // TODO: use imeOptions to disable voice input when the new API will // be available mQueryTextView.setPrivateImeOptions(IME_OPTION_NO_MICROPHONE); } updateViewsVisibility(isIconified()); } /** * Sets the APP_DATA for legacy SearchDialog use. * * @param appSearchData * bundle provided by the app when launching the search dialog * @hide */ public void setAppSearchData(Bundle appSearchData) { mAppSearchData = appSearchData; } /** * Sets the IME options on the query text field. * * @see TextView#setImeOptions(int) * @param imeOptions * the options to set on the query text field * * @attr ref android.R.styleable#SearchView_imeOptions */ public void setImeOptions(int imeOptions) { mQueryTextView.setImeOptions(imeOptions); } /** * Returns the IME options set on the query text field. * * @return the ime options * @see TextView#setImeOptions(int) * * @attr ref android.R.styleable#SearchView_imeOptions */ public int getImeOptions() { return mQueryTextView.getImeOptions(); } /** * Sets the input type on the query text field. * * @see TextView#setInputType(int) * @param inputType * the input type to set on the query text field * * @attr ref android.R.styleable#SearchView_inputType */ public void setInputType(int inputType) { mQueryTextView.setInputType(inputType); } /** * Returns the input type set on the query text field. * * @return the input type * * @attr ref android.R.styleable#SearchView_inputType */ public int getInputType() { return mQueryTextView.getInputType(); } /** @hide */ @Override public boolean requestFocus(int direction, Rect previouslyFocusedRect) { // Don't accept focus if in the middle of clearing focus if (mClearingFocus) return false; // Check if SearchView is focusable. if (!isFocusable()) return false; // If it is not iconified, then give the focus to the text field if (!isIconified()) { boolean result = mQueryTextView.requestFocus(direction, previouslyFocusedRect); if (result) { updateViewsVisibility(false); } return result; } else { return super.requestFocus(direction, previouslyFocusedRect); } } /** @hide */ @Override public void clearFocus() { mClearingFocus = true; setImeVisibility(false); super.clearFocus(); mQueryTextView.clearFocus(); mClearingFocus = false; } /** * Sets a listener for user actions within the SearchView. * * @param listener * the listener object that receives callbacks when the user * performs actions in the SearchView such as clicking on buttons * or typing a query. */ public void setOnQueryTextListener(OnQueryTextListener listener) { mOnQueryChangeListener = listener; } /** * Sets a listener to inform when the user closes the SearchView. * * @param listener * the listener to call when the user closes the SearchView. */ public void setOnCloseListener(OnCloseListener listener) { mOnCloseListener = listener; } /** * Sets a listener to inform when the focus of the query text field changes. * * @param listener * the listener to inform of focus changes. */ public void setOnQueryTextFocusChangeListener(OnFocusChangeListener listener) { mOnQueryTextFocusChangeListener = listener; } /** * Sets a listener to inform when a suggestion is focused or clicked. * * @param listener * the listener to inform of suggestion selection events. */ public void setOnSuggestionListener(OnSuggestionListener listener) { mOnSuggestionListener = listener; } /** * Sets a listener to inform when the search button is pressed. This is only * relevant when the text field is not visible by default. Calling * {@link #setIconified setIconified(false)} can also cause this listener to * be informed. * * @param listener * the listener to inform when the search button is clicked or * the text field is programmatically de-iconified. */ public void setOnSearchClickListener(OnClickListener listener) { mOnSearchClickListener = listener; } /** * Returns the query string currently in the text field. * * @return the query string */ public CharSequence getQuery() { return mQueryTextView.getText(); } /** * Sets a query string in the text field and optionally submits the query as * well. * * @param query * the query string. This replaces any query text already present * in the text field. * @param submit * whether to submit the query right now or only update the * contents of text field. */ public void setQuery(CharSequence query, boolean submit) { mQueryTextView.setText(query); if (query != null) { mQueryTextView.setSelection(mQueryTextView.length()); mUserQuery = query; } // If the query is not empty and submit is requested, submit the query if (submit && !TextUtils.isEmpty(query)) { onSubmitQuery(); } } /** * Sets the hint text to display in the query text field. This overrides any * hint specified in the SearchableInfo. * * @param hint * the hint text to display * * @attr ref android.R.styleable#SearchView_queryHint */ public void setQueryHint(CharSequence hint) { mQueryHint = hint; updateQueryHint(); } /** * Gets the hint text to display in the query text field. * * @return the query hint text, if specified, null otherwise. * * @attr ref android.R.styleable#SearchView_queryHint */ public CharSequence getQueryHint() { if (mQueryHint != null) { return mQueryHint; } else if (mSearchable != null) { CharSequence hint = null; int hintId = mSearchable.getHintId(); if (hintId != 0) { hint = getContext().getString(hintId); } return hint; } return null; } /** * Sets the default or resting state of the search field. If true, a single * search icon is shown by default and expands to show the text field and * other buttons when pressed. Also, if the default state is iconified, then * it collapses to that state when the close button is pressed. Changes to * this property will take effect immediately. * * <p> * The default value is true. * </p> * * @param iconified * whether the search field should be iconified by default * * @attr ref android.R.styleable#SearchView_iconifiedByDefault */ public void setIconifiedByDefault(boolean iconified) { if (mIconifiedByDefault == iconified) return; mIconifiedByDefault = iconified; updateViewsVisibility(iconified); updateQueryHint(); } /** * Returns the default iconified state of the search field. * * @return * * @attr ref android.R.styleable#SearchView_iconifiedByDefault */ public boolean isIconfiedByDefault() { return mIconifiedByDefault; } /** * Iconifies or expands the SearchView. Any query text is cleared when * iconified. This is a temporary state and does not override the default * iconified state set by {@link #setIconifiedByDefault(boolean)}. If the * default state is iconified, then a false here will only be valid until * the user closes the field. And if the default state is expanded, then a * true here will only clear the text field and not close it. * * @param iconify * a true value will collapse the SearchView to an icon, while a * false will expand it. */ public void setIconified(boolean iconify) { if (iconify) { onCloseClicked(); } else { onSearchClicked(); } } /** * Returns the current iconified state of the SearchView. * * @return true if the SearchView is currently iconified, false if the * search field is fully visible. */ public boolean isIconified() { return mIconified; } /** * Enables showing a submit button when the query is non-empty. In cases * where the SearchView is being used to filter the contents of the current * activity and doesn't launch a separate results activity, then the submit * button should be disabled. * * @param enabled * true to show a submit button for submitting queries, false if * a submit button is not required. */ public void setSubmitButtonEnabled(boolean enabled) { mSubmitButtonEnabled = enabled; updateViewsVisibility(isIconified()); } /** * Returns whether the submit button is enabled when necessary or never * displayed. * * @return whether the submit button is enabled automatically when necessary */ public boolean isSubmitButtonEnabled() { return mSubmitButtonEnabled; } /** * Specifies if a query refinement button should be displayed alongside each * suggestion or if it should depend on the flags set in the individual * items retrieved from the suggestions provider. Clicking on the query * refinement button will replace the text in the query text field with the * text from the suggestion. This flag only takes effect if a SearchableInfo * has been specified with {@link #setSearchableInfo(SearchableInfo)} and * not when using a custom adapter. * * @param enable * true if all items should have a query refinement button, false * if only those items that have a query refinement flag set * should have the button. * * @see SearchManager#SUGGEST_COLUMN_FLAGS * @see SearchManager#FLAG_QUERY_REFINEMENT */ public void setQueryRefinementEnabled(boolean enable) { mQueryRefinement = enable; if (mSuggestionsAdapter instanceof SuggestionsAdapter) { ((SuggestionsAdapter) mSuggestionsAdapter).setQueryRefinement( enable ? SuggestionsAdapter.REFINE_ALL : SuggestionsAdapter.REFINE_BY_ENTRY); } } /** * Returns whether query refinement is enabled for all items or only * specific ones. * * @return true if enabled for all items, false otherwise. */ public boolean isQueryRefinementEnabled() { return mQueryRefinement; } /** * You can set a custom adapter if you wish. Otherwise the default adapter * is used to display the suggestions from the suggestions provider * associated with the SearchableInfo. * * @see #setSearchableInfo(SearchableInfo) */ public void setSuggestionsAdapter(CursorAdapter adapter) { mSuggestionsAdapter = adapter; mQueryTextView.setAdapter(mSuggestionsAdapter); } /** * Returns the adapter used for suggestions, if any. * * @return the suggestions adapter */ public CursorAdapter getSuggestionsAdapter() { return mSuggestionsAdapter; } /** * Makes the view at most this many pixels wide * * @attr ref android.R.styleable#SearchView_maxWidth */ public void setMaxWidth(int maxpixels) { mMaxWidth = maxpixels; requestLayout(); } /** * Gets the specified maximum width in pixels, if set. Returns zero if no * maximum width was specified. * * @return the maximum width of the view * * @attr ref android.R.styleable#SearchView_maxWidth */ public int getMaxWidth() { return mMaxWidth; } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { // Let the standard measurements take effect in iconified state. if (isIconified()) { super.onMeasure(widthMeasureSpec, heightMeasureSpec); return; } int widthMode = MeasureSpec.getMode(widthMeasureSpec); int width = MeasureSpec.getSize(widthMeasureSpec); switch (widthMode) { case MeasureSpec.AT_MOST: // If there is an upper limit, don't exceed maximum width (explicit // or implicit) if (mMaxWidth > 0) { width = Math.min(mMaxWidth, width); } else { width = Math.min(getPreferredWidth(), width); } break; case MeasureSpec.EXACTLY: // If an exact width is specified, still don't exceed any specified // maximum width if (mMaxWidth > 0) { width = Math.min(mMaxWidth, width); } break; case MeasureSpec.UNSPECIFIED: // Use maximum width, if specified, else preferred width width = mMaxWidth > 0 ? mMaxWidth : getPreferredWidth(); break; } widthMode = MeasureSpec.EXACTLY; super.onMeasure(MeasureSpec.makeMeasureSpec(width, widthMode), heightMeasureSpec); } private int getPreferredWidth() { return getContext().getResources().getDimensionPixelSize( getResources().getIdentifier("abs__search_view_preferred_width", "dimen", c.getPackageName())); // R.dimen.abs__search_view_preferred_width); } private void updateViewsVisibility(final boolean collapsed) { mIconified = collapsed; // Visibility of views that are visible when collapsed final int visCollapsed = collapsed ? VISIBLE : GONE; // Is there text in the query final boolean hasText = !TextUtils.isEmpty(mQueryTextView.getText()); mSearchButton.setVisibility(visCollapsed); updateSubmitButton(hasText); mSearchEditFrame.setVisibility(collapsed ? GONE : VISIBLE); mSearchHintIcon.setVisibility(mIconifiedByDefault ? GONE : VISIBLE); updateCloseButton(); updateVoiceButton(!hasText); updateSubmitArea(); } private boolean hasVoiceSearch() { if (mSearchable != null && mSearchable.getVoiceSearchEnabled()) { Intent testIntent = null; if (mSearchable.getVoiceSearchLaunchWebSearch()) { testIntent = mVoiceWebSearchIntent; } else if (mSearchable.getVoiceSearchLaunchRecognizer()) { testIntent = mVoiceAppSearchIntent; } if (testIntent != null) { ResolveInfo ri = getContext().getPackageManager().resolveActivity(testIntent, PackageManager.MATCH_DEFAULT_ONLY); return ri != null; } } return false; } private boolean isSubmitAreaEnabled() { return (mSubmitButtonEnabled || mVoiceButtonEnabled) && !isIconified(); } private void updateSubmitButton(boolean hasText) { int visibility = GONE; if (mSubmitButtonEnabled && isSubmitAreaEnabled() && hasFocus() && (hasText || !mVoiceButtonEnabled)) { visibility = VISIBLE; } mSubmitButton.setVisibility(visibility); } private void updateSubmitArea() { int visibility = GONE; if (isSubmitAreaEnabled() && (mSubmitButton.getVisibility() == VISIBLE || mVoiceButton.getVisibility() == VISIBLE)) { visibility = VISIBLE; } mSubmitArea.setVisibility(visibility); } private void updateCloseButton() { final boolean hasText = !TextUtils.isEmpty(mQueryTextView.getText()); // Should we show the close button? It is not shown if there's no focus, // field is not iconified by default and there is no text in it. final boolean showClose = hasText || (mIconifiedByDefault && !mExpandedInActionView); mCloseButton.setVisibility(showClose ? VISIBLE : GONE); mCloseButton.getDrawable().setState(hasText ? ENABLED_STATE_SET : EMPTY_STATE_SET); } private void postUpdateFocusedState() { post(mUpdateDrawableStateRunnable); } private void updateFocusedState() { boolean focused = mQueryTextView.hasFocus(); mSearchPlate.getBackground().setState(focused ? FOCUSED_STATE_SET : EMPTY_STATE_SET); mSubmitArea.getBackground().setState(focused ? FOCUSED_STATE_SET : EMPTY_STATE_SET); invalidate(); } @Override protected void onDetachedFromWindow() { removeCallbacks(mUpdateDrawableStateRunnable); post(mReleaseCursorRunnable); super.onDetachedFromWindow(); } private void setImeVisibility(final boolean visible) { if (visible) { post(mShowImeRunnable); } else { removeCallbacks(mShowImeRunnable); InputMethodManager imm = (InputMethodManager) getContext() .getSystemService(Context.INPUT_METHOD_SERVICE); if (imm != null) { imm.hideSoftInputFromWindow(getWindowToken(), 0); } } } /** * Called by the SuggestionsAdapter * * @hide */ /* package */void onQueryRefine(CharSequence queryText) { setQuery(queryText); } private final OnClickListener mOnClickListener = new OnClickListener() { public void onClick(View v) { if (v == mSearchButton) { onSearchClicked(); } else if (v == mCloseButton) { onCloseClicked(); } else if (v == mSubmitButton) { onSubmitQuery(); } else if (v == mVoiceButton) { onVoiceClicked(); } else if (v == mQueryTextView) { forceSuggestionQuery(); } } }; /** * Handles the key down event for dealing with action keys. * * @param keyCode * This is the keycode of the typed key, and is the same value as * found in the KeyEvent parameter. * @param event * The complete event record for the typed key * * @return true if the event was handled here, or false if not. */ @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (mSearchable == null) { return false; } // if it's an action specified by the searchable activity, launch the // entered query with the action key // TODO SearchableInfo.ActionKeyInfo actionKey = // mSearchable.findActionKey(keyCode); // TODO if ((actionKey != null) && (actionKey.getQueryActionMsg() != // null)) { // TODO launchQuerySearch(keyCode, actionKey.getQueryActionMsg(), // mQueryTextView.getText() // TODO .toString()); // TODO return true; // TODO } return super.onKeyDown(keyCode, event); } /** * React to the user typing "enter" or other hardwired keys while typing in * the search box. This handles these special keys while the edit box has * focus. */ View.OnKeyListener mTextKeyListener = new View.OnKeyListener() { public boolean onKey(View v, int keyCode, KeyEvent event) { // guard against possible race conditions if (mSearchable == null) { return false; } if (DBG) { Log.d(LOG_TAG, "mTextListener.onKey(" + keyCode + "," + event + "), selection: " + mQueryTextView.getListSelection()); } // If a suggestion is selected, handle enter, search key, and action // keys // as presses on the selected suggestion if (mQueryTextView.isPopupShowing() && mQueryTextView.getListSelection() != ListView.INVALID_POSITION) { return onSuggestionsKey(v, keyCode, event); } // If there is text in the query box, handle enter, and action keys // The search key is handled by the dialog's onKeyDown(). if (!mQueryTextView.isEmpty() && KeyEventCompat.hasNoModifiers(event)) { if (event.getAction() == KeyEvent.ACTION_UP) { if (keyCode == KeyEvent.KEYCODE_ENTER) { v.cancelLongPress(); // Launch as a regular search. launchQuerySearch(KeyEvent.KEYCODE_UNKNOWN, null, mQueryTextView.getText().toString()); return true; } } if (event.getAction() == KeyEvent.ACTION_DOWN) { // TODO SearchableInfo.ActionKeyInfo actionKey = // mSearchable.findActionKey(keyCode); // TODO if ((actionKey != null) && // (actionKey.getQueryActionMsg() != null)) { // TODO launchQuerySearch(keyCode, // actionKey.getQueryActionMsg(), mQueryTextView // TODO .getText().toString()); // TODO return true; // TODO } } } return false; } }; /** * React to the user typing while in the suggestions list. First, check for * action keys. If not handled, try refocusing regular characters into the * EditText. */ private boolean onSuggestionsKey(View v, int keyCode, KeyEvent event) { // guard against possible race conditions (late arrival after dismiss) if (mSearchable == null) { return false; } if (mSuggestionsAdapter == null) { return false; } if (event.getAction() == KeyEvent.ACTION_DOWN && KeyEventCompat.hasNoModifiers(event)) { // First, check for enter or search (both of which we'll treat as a // "click") if (keyCode == KeyEvent.KEYCODE_ENTER || keyCode == KeyEvent.KEYCODE_SEARCH || keyCode == KeyEvent.KEYCODE_TAB) { int position = mQueryTextView.getListSelection(); return onItemClicked(position, KeyEvent.KEYCODE_UNKNOWN, null); } // Next, check for left/right moves, which we use to "return" the // user to the edit view if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT || keyCode == KeyEvent.KEYCODE_DPAD_RIGHT) { // give "focus" to text editor, with cursor at the beginning if // left key, at end if right key // TODO: Reverse left/right for right-to-left languages, e.g. // Arabic int selPoint = (keyCode == KeyEvent.KEYCODE_DPAD_LEFT) ? 0 : mQueryTextView.length(); mQueryTextView.setSelection(selPoint); mQueryTextView.setListSelection(0); mQueryTextView.clearListSelection(); ensureImeVisible(mQueryTextView, true); return true; } // Next, check for an "up and out" move if (keyCode == KeyEvent.KEYCODE_DPAD_UP && 0 == mQueryTextView.getListSelection()) { // TODO: restoreUserQuery(); // let ACTV complete the move return false; } // Next, check for an "action key" // TODO SearchableInfo.ActionKeyInfo actionKey = // mSearchable.findActionKey(keyCode); // TODO if ((actionKey != null) // TODO && ((actionKey.getSuggestActionMsg() != null) || (actionKey // TODO .getSuggestActionMsgColumn() != null))) { // TODO // launch suggestion using action key column // TODO int position = mQueryTextView.getListSelection(); // TODO if (position != ListView.INVALID_POSITION) { // TODO Cursor c = mSuggestionsAdapter.getCursor(); // TODO if (c.moveToPosition(position)) { // TODO final String actionMsg = getActionKeyMessage(c, actionKey); // TODO if (actionMsg != null && (actionMsg.length() > 0)) { // TODO return onItemClicked(position, keyCode, actionMsg); // TODO } // TODO } // TODO } // TODO } } return false; } /** * For a given suggestion and a given cursor row, get the action message. If * not provided by the specific row/column, also check for a single * definition (for the action key). * * @param c * The cursor providing suggestions * @param actionKey * The actionkey record being examined * * @return Returns a string, or null if no action key message for this * suggestion */ // TODO private static String getActionKeyMessage(Cursor c, // SearchableInfo.ActionKeyInfo actionKey) { // TODO String result = null; // TODO // check first in the cursor data, for a suggestion-specific message // TODO final String column = actionKey.getSuggestActionMsgColumn(); // TODO if (column != null) { // TODO result = SuggestionsAdapter.getColumnString(c, column); // TODO } // TODO // If the cursor didn't give us a message, see if there's a single // TODO // message defined // TODO // for the actionkey (for all suggestions) // TODO if (result == null) { // TODO result = actionKey.getSuggestActionMsg(); // TODO } // TODO return result; // TODO } private int getSearchIconId() { TypedValue outValue = new TypedValue(); getContext().getTheme().resolveAttribute( getResources().getIdentifier("searchViewSearchIcon", "attr", c.getPackageName()), // getContext().getTheme().resolveAttribute(R.attr.searchViewSearchIcon, outValue, true); return outValue.resourceId; } private CharSequence getDecoratedHint(CharSequence hintText) { // If the field is always expanded, then don't add the search icon to // the hint if (!mIconifiedByDefault) return hintText; SpannableStringBuilder ssb = new SpannableStringBuilder(" "); // for // the // icon ssb.append(hintText); Drawable searchIcon = getContext().getResources().getDrawable(getSearchIconId()); int textSize = (int) (mQueryTextView.getTextSize() * 1.25); searchIcon.setBounds(0, 0, textSize, textSize); ssb.setSpan(new ImageSpan(searchIcon), 1, 2, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); return ssb; } private void updateQueryHint() { if (mQueryHint != null) { mQueryTextView.setHint(getDecoratedHint(mQueryHint)); } else if (mSearchable != null) { CharSequence hint = null; int hintId = mSearchable.getHintId(); if (hintId != 0) { hint = getContext().getString(hintId); } if (hint != null) { mQueryTextView.setHint(getDecoratedHint(hint)); } } else { mQueryTextView.setHint(getDecoratedHint("")); } } /** * Updates the auto-complete text view. */ private void updateSearchAutoComplete() { // TODO mQueryTextView.setDropDownAnimationStyle(0); // no animation mQueryTextView.setThreshold(mSearchable.getSuggestThreshold()); mQueryTextView.setImeOptions(mSearchable.getImeOptions()); int inputType = mSearchable.getInputType(); // We only touch this if the input type is set up for text (which it // almost certainly // should be, in the case of search!) if ((inputType & InputType.TYPE_MASK_CLASS) == InputType.TYPE_CLASS_TEXT) { // The existence of a suggestions authority is the proxy for // "suggestions // are available here" inputType &= ~InputType.TYPE_TEXT_FLAG_AUTO_COMPLETE; if (mSearchable.getSuggestAuthority() != null) { inputType |= InputType.TYPE_TEXT_FLAG_AUTO_COMPLETE; // TYPE_TEXT_FLAG_AUTO_COMPLETE means that the text editor is // performing // auto-completion based on its own semantics, which it will // present to the user // as they type. This generally means that the input method // should not show its // own candidates, and the spell checker should not be in // action. The text editor // supplies its candidates by calling // InputMethodManager.displayCompletions(), // which in turn will call // InputMethodSession.displayCompletions(). inputType |= InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS; } } mQueryTextView.setInputType(inputType); if (mSuggestionsAdapter != null) { mSuggestionsAdapter.changeCursor(null); } // attach the suggestions adapter, if suggestions are available // The existence of a suggestions authority is the proxy for // "suggestions available here" if (mSearchable.getSuggestAuthority() != null) { mSuggestionsAdapter = new SuggestionsAdapter(getContext(), this, mSearchable, mOutsideDrawablesCache); mQueryTextView.setAdapter(mSuggestionsAdapter); ((SuggestionsAdapter) mSuggestionsAdapter).setQueryRefinement( mQueryRefinement ? SuggestionsAdapter.REFINE_ALL : SuggestionsAdapter.REFINE_BY_ENTRY); } } /** * Update the visibility of the voice button. There are actually two voice * search modes, either of which will activate the button. * * @param empty * whether the search query text field is empty. If it is, then * the other criteria apply to make the voice button visible. */ private void updateVoiceButton(boolean empty) { int visibility = GONE; if (mVoiceButtonEnabled && !isIconified() && empty) { visibility = VISIBLE; mSubmitButton.setVisibility(GONE); } mVoiceButton.setVisibility(visibility); } private final OnEditorActionListener mOnEditorActionListener = new OnEditorActionListener() { /** * Called when the input method default action key is pressed. */ public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { onSubmitQuery(); return true; } }; private void onTextChanged(CharSequence newText) { CharSequence text = mQueryTextView.getText(); mUserQuery = text; boolean hasText = !TextUtils.isEmpty(text); updateSubmitButton(hasText); updateVoiceButton(!hasText); updateCloseButton(); updateSubmitArea(); if (mOnQueryChangeListener != null && !TextUtils.equals(newText, mOldQueryText)) { mOnQueryChangeListener.onQueryTextChange(newText.toString()); } mOldQueryText = newText.toString(); } private void onSubmitQuery() { CharSequence query = mQueryTextView.getText(); if (query != null && TextUtils.getTrimmedLength(query) > 0) { if (mOnQueryChangeListener == null || !mOnQueryChangeListener.onQueryTextSubmit(query.toString())) { if (mSearchable != null) { launchQuerySearch(KeyEvent.KEYCODE_UNKNOWN, null, query.toString()); setImeVisibility(false); } dismissSuggestions(); } } } private void dismissSuggestions() { mQueryTextView.dismissDropDown(); } private void onCloseClicked() { CharSequence text = mQueryTextView.getText(); if (TextUtils.isEmpty(text)) { if (mIconifiedByDefault) { // If the app doesn't override the close behavior if (mOnCloseListener == null || !mOnCloseListener.onClose()) { // hide the keyboard and remove focus clearFocus(); // collapse the search field updateViewsVisibility(true); } } } else { mQueryTextView.setText(""); mQueryTextView.requestFocus(); setImeVisibility(true); } } private void onSearchClicked() { updateViewsVisibility(false); mQueryTextView.requestFocus(); setImeVisibility(true); if (mOnSearchClickListener != null) { mOnSearchClickListener.onClick(this); } } private void onVoiceClicked() { // guard against possible race conditions if (mSearchable == null) { return; } SearchableInfo searchable = mSearchable; try { if (searchable.getVoiceSearchLaunchWebSearch()) { Intent webSearchIntent = createVoiceWebSearchIntent(mVoiceWebSearchIntent, searchable); getContext().startActivity(webSearchIntent); } else if (searchable.getVoiceSearchLaunchRecognizer()) { Intent appSearchIntent = createVoiceAppSearchIntent(mVoiceAppSearchIntent, searchable); getContext().startActivity(appSearchIntent); } } catch (ActivityNotFoundException e) { // Should not happen, since we check the availability of // voice search before showing the button. But just in case... Log.w(LOG_TAG, "Could not find voice search activity"); } } void onTextFocusChanged() { updateViewsVisibility(isIconified()); // Delayed update to make sure that the focus has settled down and // window focus changes // don't affect it. A synchronous update was not working. postUpdateFocusedState(); if (mQueryTextView.hasFocus()) { forceSuggestionQuery(); } } @Override public void onWindowFocusChanged(boolean hasWindowFocus) { super.onWindowFocusChanged(hasWindowFocus); postUpdateFocusedState(); } /** * {@inheritDoc} */ @Override public void onActionViewCollapsed() { clearFocus(); updateViewsVisibility(true); mQueryTextView.setImeOptions(mCollapsedImeOptions); mExpandedInActionView = false; } /** * {@inheritDoc} */ @Override public void onActionViewExpanded() { if (mExpandedInActionView) return; mExpandedInActionView = true; mCollapsedImeOptions = mQueryTextView.getImeOptions(); mQueryTextView.setImeOptions(mCollapsedImeOptions | EditorInfo.IME_FLAG_NO_FULLSCREEN); mQueryTextView.setText(""); setIconified(false); } @Override public void onInitializeAccessibilityEvent(AccessibilityEvent event) { super.onInitializeAccessibilityEvent(event); event.setClassName(SearchView.class.getName()); } @Override public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { super.onInitializeAccessibilityNodeInfo(info); info.setClassName(SearchView.class.getName()); } private void adjustDropDownSizeAndPosition() { if (mDropDownAnchor.getWidth() > 1) { Resources res = getContext().getResources(); int anchorPadding = mSearchPlate.getPaddingLeft(); Rect dropDownPadding = new Rect(); int iconOffset = mIconifiedByDefault ? res.getDimensionPixelSize(getResources().getIdentifier("abs__dropdownitem_icon_width", "dimen", c.getPackageName())) // .getDimensionPixelSize(R.dimen.abs__dropdownitem_icon_width) + res.getDimensionPixelSize(getResources().getIdentifier( "abs__dropdownitem_text_padding_left", "dimen", c.getPackageName())) // + // res.getDimensionPixelSize(R.dimen.abs__dropdownitem_text_padding_left) : 0; mQueryTextView.getDropDownBackground().getPadding(dropDownPadding); mQueryTextView.setDropDownHorizontalOffset(-(dropDownPadding.left + iconOffset) + anchorPadding); mQueryTextView.setDropDownWidth(mDropDownAnchor.getWidth() + dropDownPadding.left + dropDownPadding.right + iconOffset - (anchorPadding)); } } private boolean onItemClicked(int position, int actionKey, String actionMsg) { if (mOnSuggestionListener == null || !mOnSuggestionListener.onSuggestionClick(position)) { launchSuggestion(position, KeyEvent.KEYCODE_UNKNOWN, null); setImeVisibility(false); dismissSuggestions(); return true; } return false; } private boolean onItemSelected(int position) { if (mOnSuggestionListener == null || !mOnSuggestionListener.onSuggestionSelect(position)) { rewriteQueryFromSuggestion(position); return true; } return false; } private final OnItemClickListener mOnItemClickListener = new OnItemClickListener() { /** * Implements OnItemClickListener */ public void onItemClick(AdapterView<?> parent, View view, int position, long id) { if (DBG) Log.d(LOG_TAG, "onItemClick() position " + position); onItemClicked(position, KeyEvent.KEYCODE_UNKNOWN, null); } }; private final OnItemSelectedListener mOnItemSelectedListener = new OnItemSelectedListener() { /** * Implements OnItemSelectedListener */ public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { if (DBG) Log.d(LOG_TAG, "onItemSelected() position " + position); SearchView.this.onItemSelected(position); } /** * Implements OnItemSelectedListener */ public void onNothingSelected(AdapterView<?> parent) { if (DBG) Log.d(LOG_TAG, "onNothingSelected()"); } }; /** * Query rewriting. */ private void rewriteQueryFromSuggestion(int position) { CharSequence oldQuery = mQueryTextView.getText(); Cursor c = mSuggestionsAdapter.getCursor(); if (c == null) { return; } if (c.moveToPosition(position)) { // Get the new query from the suggestion. CharSequence newQuery = mSuggestionsAdapter.convertToString(c); if (newQuery != null) { // The suggestion rewrites the query. // Update the text field, without getting new suggestions. setQuery(newQuery); } else { // The suggestion does not rewrite the query, restore the user's // query. setQuery(oldQuery); } } else { // We got a bad position, restore the user's query. setQuery(oldQuery); } } /** * Launches an intent based on a suggestion. * * @param position * The index of the suggestion to create the intent from. * @param actionKey * The key code of the action key that was pressed, or * {@link KeyEvent#KEYCODE_UNKNOWN} if none. * @param actionMsg * The message for the action key that was pressed, or * <code>null</code> if none. * @return true if a successful launch, false if could not (e.g. bad * position). */ private boolean launchSuggestion(int position, int actionKey, String actionMsg) { Cursor c = mSuggestionsAdapter.getCursor(); if ((c != null) && c.moveToPosition(position)) { Intent intent = createIntentFromSuggestion(c, actionKey, actionMsg); // launch the intent launchIntent(intent); return true; } return false; } /** * Launches an intent, including any special intent handling. */ private void launchIntent(Intent intent) { if (intent == null) { return; } try { // If the intent was created from a suggestion, it will always have // an explicit // component here. getContext().startActivity(intent); } catch (RuntimeException ex) { Log.e(LOG_TAG, "Failed launch activity: " + intent, ex); } } /** * Sets the text in the query box, without updating the suggestions. */ private void setQuery(CharSequence query) { setText(mQueryTextView, query, true); // Move the cursor to the end mQueryTextView.setSelection(TextUtils.isEmpty(query) ? 0 : query.length()); } private void launchQuerySearch(int actionKey, String actionMsg, String query) { String action = Intent.ACTION_SEARCH; Intent intent = createIntent(action, null, null, query, actionKey, actionMsg); getContext().startActivity(intent); } /** * Constructs an intent from the given information and the search dialog * state. * * @param action * Intent action. * @param data * Intent data, or <code>null</code>. * @param extraData * Data for {@link SearchManager#EXTRA_DATA_KEY} or * <code>null</code>. * @param query * Intent query, or <code>null</code>. * @param actionKey * The key code of the action key that was pressed, or * {@link KeyEvent#KEYCODE_UNKNOWN} if none. * @param actionMsg * The message for the action key that was pressed, or * <code>null</code> if none. * @return The intent. */ private Intent createIntent(String action, Uri data, String extraData, String query, int actionKey, String actionMsg) { // Now build the Intent Intent intent = new Intent(action); intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); // We need CLEAR_TOP to avoid reusing an old task that has other // activities // on top of the one we want. We don't want to do this in in-app search // though, // as it can be destructive to the activity stack. if (data != null) { intent.setData(data); } intent.putExtra(SearchManager.USER_QUERY, mUserQuery); if (query != null) { intent.putExtra(SearchManager.QUERY, query); } if (extraData != null) { intent.putExtra(SearchManager.EXTRA_DATA_KEY, extraData); } if (mAppSearchData != null) { intent.putExtra(SearchManager.APP_DATA, mAppSearchData); } if (actionKey != KeyEvent.KEYCODE_UNKNOWN) { intent.putExtra(SearchManager.ACTION_KEY, actionKey); intent.putExtra(SearchManager.ACTION_MSG, actionMsg); } intent.setComponent(mSearchable.getSearchActivity()); return intent; } /** * Create and return an Intent that can launch the voice search activity for * web search. */ private Intent createVoiceWebSearchIntent(Intent baseIntent, SearchableInfo searchable) { Intent voiceIntent = new Intent(baseIntent); ComponentName searchActivity = searchable.getSearchActivity(); voiceIntent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE, searchActivity == null ? null : searchActivity.flattenToShortString()); return voiceIntent; } /** * Create and return an Intent that can launch the voice search activity, * perform a specific voice transcription, and forward the results to the * searchable activity. * * @param baseIntent * The voice app search intent to start from * @return A completely-configured intent ready to send to the voice search * activity */ private Intent createVoiceAppSearchIntent(Intent baseIntent, SearchableInfo searchable) { ComponentName searchActivity = searchable.getSearchActivity(); // create the necessary intent to set up a search-and-forward operation // in the voice search system. We have to keep the bundle separate, // because it becomes immutable once it enters the PendingIntent Intent queryIntent = new Intent(Intent.ACTION_SEARCH); queryIntent.setComponent(searchActivity); PendingIntent pending = PendingIntent.getActivity(getContext(), 0, queryIntent, PendingIntent.FLAG_ONE_SHOT); // Now set up the bundle that will be inserted into the pending intent // when it's time to do the search. We always build it here (even if // empty) // because the voice search activity will always need to insert "QUERY" // into // it anyway. Bundle queryExtras = new Bundle(); // Now build the intent to launch the voice search. Add all necessary // extras to launch the voice recognizer, and then all the necessary // extras // to forward the results to the searchable activity Intent voiceIntent = new Intent(baseIntent); // Add all of the configuration options supplied by the searchable's // metadata String languageModel = RecognizerIntent.LANGUAGE_MODEL_FREE_FORM; String prompt = null; String language = null; int maxResults = 1; Resources resources = getResources(); if (searchable.getVoiceLanguageModeId() != 0) { languageModel = resources.getString(searchable.getVoiceLanguageModeId()); } if (searchable.getVoicePromptTextId() != 0) { prompt = resources.getString(searchable.getVoicePromptTextId()); } if (searchable.getVoiceLanguageId() != 0) { language = resources.getString(searchable.getVoiceLanguageId()); } if (searchable.getVoiceMaxResults() != 0) { maxResults = searchable.getVoiceMaxResults(); } voiceIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, languageModel); voiceIntent.putExtra(RecognizerIntent.EXTRA_PROMPT, prompt); voiceIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, language); voiceIntent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, maxResults); voiceIntent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE, searchActivity == null ? null : searchActivity.flattenToShortString()); // Add the values that configure forwarding the results voiceIntent.putExtra(RecognizerIntent.EXTRA_RESULTS_PENDINGINTENT, pending); voiceIntent.putExtra(RecognizerIntent.EXTRA_RESULTS_PENDINGINTENT_BUNDLE, queryExtras); return voiceIntent; } /** * When a particular suggestion has been selected, perform the various * lookups required to use the suggestion. This includes checking the cursor * for suggestion-specific data, and/or falling back to the XML for * defaults; It also creates REST style Uri data when the suggestion * includes a data id. * * @param c * The suggestions cursor, moved to the row of the user's * selection * @param actionKey * The key code of the action key that was pressed, or * {@link KeyEvent#KEYCODE_UNKNOWN} if none. * @param actionMsg * The message for the action key that was pressed, or * <code>null</code> if none. * @return An intent for the suggestion at the cursor's position. */ private Intent createIntentFromSuggestion(Cursor c, int actionKey, String actionMsg) { try { // use specific action if supplied, or default action if supplied, // or fixed default String action = getColumnString(c, SearchManager.SUGGEST_COLUMN_INTENT_ACTION); if (action == null) { action = mSearchable.getSuggestIntentAction(); } if (action == null) { action = Intent.ACTION_SEARCH; } // use specific data if supplied, or default data if supplied String data = getColumnString(c, SearchManager.SUGGEST_COLUMN_INTENT_DATA); if (data == null) { data = mSearchable.getSuggestIntentData(); } // then, if an ID was provided, append it. if (data != null) { String id = getColumnString(c, SearchManager.SUGGEST_COLUMN_INTENT_DATA_ID); if (id != null) { data = data + "/" + Uri.encode(id); } } Uri dataUri = (data == null) ? null : Uri.parse(data); String query = getColumnString(c, SearchManager.SUGGEST_COLUMN_QUERY); String extraData = getColumnString(c, SearchManager.SUGGEST_COLUMN_INTENT_EXTRA_DATA); return createIntent(action, dataUri, extraData, query, actionKey, actionMsg); } catch (RuntimeException e) { int rowNum; try { // be really paranoid now rowNum = c.getPosition(); } catch (RuntimeException e2) { rowNum = -1; } Log.w(LOG_TAG, "Search suggestions cursor at row " + rowNum + " returned exception.", e); return null; } } private void forceSuggestionQuery() { try { Method before = AutoCompleteTextView.class.getDeclaredMethod("doBeforeTextChanged"); Method after = AutoCompleteTextView.class.getDeclaredMethod("doAfterTextChanged"); before.setAccessible(true); after.setAccessible(true); before.invoke(mQueryTextView); after.invoke(mQueryTextView); } catch (Exception e) { // Oh well... } } static boolean isLandscapeMode(Context context) { return context.getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE; } /** * Callback to watch the text field for empty/non-empty */ private TextWatcher mTextWatcher = new TextWatcher() { public void beforeTextChanged(CharSequence s, int start, int before, int after) { } public void onTextChanged(CharSequence s, int start, int before, int after) { SearchView.this.onTextChanged(s); } public void afterTextChanged(Editable s) { } }; /** * Local subclass for AutoCompleteTextView. * * @hide */ public static class SearchAutoComplete extends AutoCompleteTextView { private int mThreshold; private SearchView mSearchView; public SearchAutoComplete(Context context) { super(context); mThreshold = getThreshold(); } public SearchAutoComplete(Context context, AttributeSet attrs) { super(context, attrs); mThreshold = getThreshold(); } public SearchAutoComplete(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); mThreshold = getThreshold(); } void setSearchView(SearchView searchView) { mSearchView = searchView; } @Override public void setThreshold(int threshold) { super.setThreshold(threshold); mThreshold = threshold; } /** * Returns true if the text field is empty, or contains only whitespace. */ private boolean isEmpty() { return TextUtils.getTrimmedLength(getText()) == 0; } /** * We override this method to avoid replacing the query box text when a * suggestion is clicked. */ @Override protected void replaceText(CharSequence text) { } /** * We override this method to avoid an extra onItemClick being called on * the drop-down's OnItemClickListener by * {@link AutoCompleteTextView#onKeyUp(int, KeyEvent)} when an item is * clicked with the trackball. */ @Override public void performCompletion() { } /** * We override this method to be sure and show the soft keyboard if * appropriate when the TextView has focus. */ @Override public void onWindowFocusChanged(boolean hasWindowFocus) { super.onWindowFocusChanged(hasWindowFocus); if (hasWindowFocus && mSearchView.hasFocus() && getVisibility() == VISIBLE) { InputMethodManager inputManager = (InputMethodManager) getContext() .getSystemService(Context.INPUT_METHOD_SERVICE); inputManager.showSoftInput(this, 0); // If in landscape mode, then make sure that // the ime is in front of the dropdown. if (isLandscapeMode(getContext())) { ensureImeVisible(this, true); } } } @Override protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) { super.onFocusChanged(focused, direction, previouslyFocusedRect); mSearchView.onTextFocusChanged(); } /** * We override this method so that we can allow a threshold of zero, * which ACTV does not. */ @Override public boolean enoughToFilter() { return mThreshold <= 0 || super.enoughToFilter(); } @Override public boolean onKeyPreIme(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK) { // special case for the back key, we do not even try to send it // to the drop down list but instead, consume it immediately if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) { KeyEvent.DispatcherState state = getKeyDispatcherState(); if (state != null) { state.startTracking(event, this); } return true; } else if (event.getAction() == KeyEvent.ACTION_UP) { KeyEvent.DispatcherState state = getKeyDispatcherState(); if (state != null) { state.handleUpEvent(event); } if (event.isTracking() && !event.isCanceled()) { mSearchView.clearFocus(); mSearchView.setImeVisibility(false); return true; } } } return super.onKeyPreIme(keyCode, event); } } private static void ensureImeVisible(AutoCompleteTextView view, boolean visible) { try { Method method = AutoCompleteTextView.class.getMethod("ensureImeVisible", boolean.class); method.setAccessible(true); method.invoke(view, visible); } catch (Exception e) { // Oh well... } } private static void showSoftInputUnchecked(View view, InputMethodManager imm, int flags) { try { Method method = imm.getClass().getMethod("showSoftInputUnchecked", int.class, ResultReceiver.class); method.setAccessible(true); method.invoke(imm, flags, null); } catch (Exception e) { // Fallback to public API which hopefully does mostly the same thing imm.showSoftInput(view, flags); } } private static void setText(AutoCompleteTextView view, CharSequence text, boolean filter) { try { Method method = AutoCompleteTextView.class.getMethod("setText", CharSequence.class, boolean.class); method.setAccessible(true); method.invoke(view, text, filter); } catch (Exception e) { // Fallback to public API which hopefully does mostly the same thing view.setText(text); } } }