Java tutorial
/* * Copyright (C) 2015 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.android.deskclock2.alarms; import android.animation.Animator; import android.animation.AnimatorListenerAdapter; import android.animation.AnimatorSet; import android.animation.ObjectAnimator; import android.animation.PropertyValuesHolder; import android.animation.TimeInterpolator; import android.animation.ValueAnimator; import android.content.BroadcastReceiver; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.content.ServiceConnection; import android.content.pm.ActivityInfo; import android.graphics.Color; import android.graphics.Rect; import android.graphics.drawable.ColorDrawable; import android.os.Bundle; import android.os.Handler; import android.os.IBinder; import android.support.annotation.NonNull; import android.support.v4.graphics.ColorUtils; import android.support.v4.view.animation.PathInterpolatorCompat; import android.support.v7.app.AppCompatActivity; import android.view.KeyEvent; import android.view.MotionEvent; import android.view.View; import android.view.ViewGroup; import android.view.WindowManager; import android.view.accessibility.AccessibilityManager; import android.widget.ImageView; import android.widget.TextClock; import android.widget.TextView; import com.android.deskclock2.AnimatorUtils; import com.android.deskclock2.LogUtils; import com.android.deskclock2.R; import com.android.deskclock2.Utils; import com.android.deskclock2.events.Events; import com.android.deskclock2.provider.AlarmInstance; import com.android.deskclock2.settings.SettingsActivity; import com.android.deskclock2.widget.CircleView; public class AlarmActivity extends AppCompatActivity implements View.OnClickListener, View.OnTouchListener { private static final String LOGTAG = AlarmActivity.class.getSimpleName(); private static final TimeInterpolator PULSE_INTERPOLATOR = PathInterpolatorCompat.create(0.4f, 0.0f, 0.2f, 1.0f); private static final TimeInterpolator REVEAL_INTERPOLATOR = PathInterpolatorCompat.create(0.0f, 0.0f, 0.2f, 1.0f); private static final int PULSE_DURATION_MILLIS = 1000; private static final int ALARM_BOUNCE_DURATION_MILLIS = 500; private static final int ALERT_REVEAL_DURATION_MILLIS = 500; private static final int ALERT_FADE_DURATION_MILLIS = 500; private static final int ALERT_DISMISS_DELAY_MILLIS = 2000; private static final float BUTTON_SCALE_DEFAULT = 0.7f; private static final int BUTTON_DRAWABLE_ALPHA_DEFAULT = 165; private final Handler mHandler = new Handler(); private final BroadcastReceiver mReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { final String action = intent.getAction(); LogUtils.v(LOGTAG, "Received broadcast: %s", action); if (!mAlarmHandled) { switch (action) { case AlarmService.ALARM_SNOOZE_ACTION: snooze(); break; case AlarmService.ALARM_DISMISS_ACTION: dismiss(); break; case AlarmService.ALARM_DONE_ACTION: finish(); break; default: LogUtils.i(LOGTAG, "Unknown broadcast: %s", action); break; } } else { LogUtils.v(LOGTAG, "Ignored broadcast: %s", action); } } }; private final ServiceConnection mConnection = new ServiceConnection() { @Override public void onServiceConnected(ComponentName name, IBinder service) { LogUtils.i("Finished binding to AlarmService"); } @Override public void onServiceDisconnected(ComponentName name) { LogUtils.i("Disconnected from AlarmService"); } }; private AlarmInstance mAlarmInstance; private boolean mAlarmHandled; private String mVolumeBehavior; private int mCurrentHourColor; private boolean mReceiverRegistered; /** Whether the AlarmService is currently bound */ private boolean mServiceBound; private AccessibilityManager mAccessibilityManager; private ViewGroup mAlertView; private TextView mAlertTitleView; private TextView mAlertInfoView; private ViewGroup mContentView; private ImageView mAlarmButton; private ImageView mSnoozeButton; private ImageView mDismissButton; private TextView mHintView; private ValueAnimator mAlarmAnimator; private ValueAnimator mSnoozeAnimator; private ValueAnimator mDismissAnimator; private ValueAnimator mPulseAnimator; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); final long instanceId = AlarmInstance.getId(getIntent().getData()); mAlarmInstance = AlarmInstance.getInstance(getContentResolver(), instanceId); if (mAlarmInstance == null) { // The alarm was deleted before the activity got created, so just finish() LogUtils.e(LOGTAG, "Error displaying alarm for intent: %s", getIntent()); finish(); return; } else if (mAlarmInstance.mAlarmState != AlarmInstance.FIRED_STATE) { LogUtils.i(LOGTAG, "Skip displaying alarm for instance: %s", mAlarmInstance); finish(); return; } LogUtils.i(LOGTAG, "Displaying alarm for instance: %s", mAlarmInstance); // Get the volume/camera button behavior setting mVolumeBehavior = Utils.getDefaultSharedPreferences(this).getString(SettingsActivity.KEY_VOLUME_BUTTONS, SettingsActivity.DEFAULT_VOLUME_BEHAVIOR); getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED | WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD | WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON | WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON); // Hide navigation bar to minimize accidental tap on Home key hideNavigationBar(); // Close dialogs and window shade, so this is fully visible sendBroadcast(new Intent(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)); // In order to allow tablets to freely rotate and phones to stick // with "nosensor" (use default device orientation) we have to have // the manifest start with an orientation of unspecified" and only limit // to "nosensor" for phones. Otherwise we get behavior like in b/8728671 // where tablets start off in their default orientation and then are // able to freely rotate. if (!getResources().getBoolean(R.bool.config_rotateAlarmAlert)) { setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_NOSENSOR); } mAccessibilityManager = (AccessibilityManager) getSystemService(ACCESSIBILITY_SERVICE); setContentView(R.layout.alarm_activity); mAlertView = (ViewGroup) findViewById(R.id.alert); mAlertTitleView = (TextView) mAlertView.findViewById(R.id.alert_title); mAlertInfoView = (TextView) mAlertView.findViewById(R.id.alert_info); mContentView = (ViewGroup) findViewById(R.id.content); mAlarmButton = (ImageView) mContentView.findViewById(R.id.alarm); mSnoozeButton = (ImageView) mContentView.findViewById(R.id.snooze); mDismissButton = (ImageView) mContentView.findViewById(R.id.dismiss); mHintView = (TextView) mContentView.findViewById(R.id.hint); final TextView titleView = (TextView) mContentView.findViewById(R.id.title); final TextClock digitalClock = (TextClock) mContentView.findViewById(R.id.digital_clock); final CircleView pulseView = (CircleView) mContentView.findViewById(R.id.pulse); titleView.setText(mAlarmInstance.getLabelOrDefault(this)); Utils.setTimeFormat(this, digitalClock); mCurrentHourColor = Utils.getCurrentHourColor(); getWindow().setBackgroundDrawable(new ColorDrawable(mCurrentHourColor)); mAlarmButton.setOnTouchListener(this); mSnoozeButton.setOnClickListener(this); mDismissButton.setOnClickListener(this); mAlarmAnimator = AnimatorUtils.getScaleAnimator(mAlarmButton, 1.0f, 0.0f); mSnoozeAnimator = getButtonAnimator(mSnoozeButton, Color.WHITE); mDismissAnimator = getButtonAnimator(mDismissButton, mCurrentHourColor); mPulseAnimator = ObjectAnimator.ofPropertyValuesHolder(pulseView, PropertyValuesHolder.ofFloat(CircleView.RADIUS, 0.0f, pulseView.getRadius()), PropertyValuesHolder.ofObject(CircleView.FILL_COLOR, AnimatorUtils.ARGB_EVALUATOR, ColorUtils.setAlphaComponent(pulseView.getFillColor(), 0))); mPulseAnimator.setDuration(PULSE_DURATION_MILLIS); mPulseAnimator.setInterpolator(PULSE_INTERPOLATOR); mPulseAnimator.setRepeatCount(ValueAnimator.INFINITE); mPulseAnimator.start(); } @Override protected void onResume() { super.onResume(); // Re-query for AlarmInstance in case the state has changed externally final long instanceId = AlarmInstance.getId(getIntent().getData()); mAlarmInstance = AlarmInstance.getInstance(getContentResolver(), instanceId); if (mAlarmInstance == null) { LogUtils.i(LOGTAG, "No alarm instance for instanceId: %d", instanceId); finish(); return; } // Verify that the alarm is still firing before showing the activity if (mAlarmInstance.mAlarmState != AlarmInstance.FIRED_STATE) { LogUtils.i(LOGTAG, "Skip displaying alarm for instance: %s", mAlarmInstance); finish(); return; } if (!mReceiverRegistered) { // Register to get the alarm done/snooze/dismiss intent. final IntentFilter filter = new IntentFilter(AlarmService.ALARM_DONE_ACTION); filter.addAction(AlarmService.ALARM_SNOOZE_ACTION); filter.addAction(AlarmService.ALARM_DISMISS_ACTION); registerReceiver(mReceiver, filter); mReceiverRegistered = true; } bindAlarmService(); resetAnimations(); } @Override protected void onPause() { super.onPause(); unbindAlarmService(); // Skip if register didn't happen to avoid IllegalArgumentException if (mReceiverRegistered) { unregisterReceiver(mReceiver); mReceiverRegistered = false; } } @Override public boolean dispatchKeyEvent(@NonNull KeyEvent keyEvent) { // Do this in dispatch to intercept a few of the system keys. LogUtils.v(LOGTAG, "dispatchKeyEvent: %s", keyEvent); switch (keyEvent.getKeyCode()) { // Volume keys and camera keys dismiss the alarm. case KeyEvent.KEYCODE_POWER: case KeyEvent.KEYCODE_VOLUME_UP: case KeyEvent.KEYCODE_VOLUME_DOWN: case KeyEvent.KEYCODE_VOLUME_MUTE: case KeyEvent.KEYCODE_CAMERA: case KeyEvent.KEYCODE_FOCUS: if (!mAlarmHandled && keyEvent.getAction() == KeyEvent.ACTION_UP) { switch (mVolumeBehavior) { case SettingsActivity.VOLUME_BEHAVIOR_SNOOZE: snooze(); break; case SettingsActivity.VOLUME_BEHAVIOR_DISMISS: dismiss(); break; default: break; } } return true; default: return super.dispatchKeyEvent(keyEvent); } } @Override public void onBackPressed() { // Don't allow back to dismiss. } @Override public void onClick(View view) { if (mAlarmHandled) { LogUtils.v(LOGTAG, "onClick ignored: %s", view); return; } LogUtils.v(LOGTAG, "onClick: %s", view); // If in accessibility mode, allow snooze/dismiss by double tapping on respective icons. if (mAccessibilityManager != null && mAccessibilityManager.isTouchExplorationEnabled()) { if (view == mSnoozeButton) { snooze(); } else if (view == mDismissButton) { dismiss(); } return; } if (view == mSnoozeButton) { hintSnooze(); } else if (view == mDismissButton) { hintDismiss(); } } @Override public boolean onTouch(View view, MotionEvent motionEvent) { if (mAlarmHandled) { LogUtils.v(LOGTAG, "onTouch ignored: %s", motionEvent); return false; } final int[] contentLocation = { 0, 0 }; mContentView.getLocationOnScreen(contentLocation); final float x = motionEvent.getRawX() - contentLocation[0]; final float y = motionEvent.getRawY() - contentLocation[1]; final int alarmLeft = mAlarmButton.getLeft() + mAlarmButton.getPaddingLeft(); final int alarmRight = mAlarmButton.getRight() - mAlarmButton.getPaddingRight(); final float snoozeFraction, dismissFraction; if (mContentView.getLayoutDirection() == View.LAYOUT_DIRECTION_RTL) { snoozeFraction = getFraction(alarmRight, mSnoozeButton.getLeft(), x); dismissFraction = getFraction(alarmLeft, mDismissButton.getRight(), x); } else { snoozeFraction = getFraction(alarmLeft, mSnoozeButton.getRight(), x); dismissFraction = getFraction(alarmRight, mDismissButton.getLeft(), x); } setAnimatedFractions(snoozeFraction, dismissFraction); switch (motionEvent.getActionMasked()) { case MotionEvent.ACTION_DOWN: LogUtils.v(LOGTAG, "onTouch started: %s", motionEvent); // Stop the pulse, allowing the last pulse to finish. mPulseAnimator.setRepeatCount(0); break; case MotionEvent.ACTION_UP: LogUtils.v(LOGTAG, "onTouch ended: %s", motionEvent); if (snoozeFraction == 1.0f) { snooze(); } else if (dismissFraction == 1.0f) { dismiss(); } else { if (snoozeFraction > 0.0f || dismissFraction > 0.0f) { // Animate back to the initial state. AnimatorUtils.reverse(mAlarmAnimator, mSnoozeAnimator, mDismissAnimator); } else if (mAlarmButton.getTop() <= y && y <= mAlarmButton.getBottom()) { // User touched the alarm button, hint the dismiss action hintDismiss(); } // Restart the pulse. mPulseAnimator.setRepeatCount(ValueAnimator.INFINITE); if (!mPulseAnimator.isStarted()) { mPulseAnimator.start(); } } break; case MotionEvent.ACTION_CANCEL: resetAnimations(); break; default: break; } return true; } private void hideNavigationBar() { getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY); } private void hintSnooze() { final int alarmLeft = mAlarmButton.getLeft() + mAlarmButton.getPaddingLeft(); final int alarmRight = mAlarmButton.getRight() - mAlarmButton.getPaddingRight(); final float translationX = Math.max(mSnoozeButton.getLeft() - alarmRight, 0) + Math.min(mSnoozeButton.getRight() - alarmLeft, 0); getAlarmBounceAnimator(translationX, translationX < 0.0f ? R.string.description_direction_left : R.string.description_direction_right) .start(); } private void hintDismiss() { final int alarmLeft = mAlarmButton.getLeft() + mAlarmButton.getPaddingLeft(); final int alarmRight = mAlarmButton.getRight() - mAlarmButton.getPaddingRight(); final float translationX = Math.max(mDismissButton.getLeft() - alarmRight, 0) + Math.min(mDismissButton.getRight() - alarmLeft, 0); getAlarmBounceAnimator(translationX, translationX < 0.0f ? R.string.description_direction_left : R.string.description_direction_right) .start(); } /** * Set animators to initial values and restart pulse on alarm button. */ private void resetAnimations() { // Set the animators to their initial values. setAnimatedFractions(0.0f /* snoozeFraction */, 0.0f /* dismissFraction */); // Restart the pulse. mPulseAnimator.setRepeatCount(ValueAnimator.INFINITE); if (!mPulseAnimator.isStarted()) { mPulseAnimator.start(); } } /** * Perform snooze animation and send snooze intent. */ private void snooze() { mAlarmHandled = true; LogUtils.v(LOGTAG, "Snoozed: %s", mAlarmInstance); final int accentColor = Utils.obtainStyledColor(this, R.attr.colorAccent, Color.RED); setAnimatedFractions(1.0f /* snoozeFraction */, 0.0f /* dismissFraction */); final int snoozeMinutes = AlarmStateManager.getSnoozedMinutes(this); final String infoText = getResources().getQuantityString(R.plurals.alarm_alert_snooze_duration, snoozeMinutes, snoozeMinutes); final String accessibilityText = getResources().getQuantityString(R.plurals.alarm_alert_snooze_set, snoozeMinutes, snoozeMinutes); getAlertAnimator(mSnoozeButton, R.string.alarm_alert_snoozed_text, infoText, accessibilityText, accentColor, accentColor).start(); AlarmStateManager.setSnoozeState(this, mAlarmInstance, false /* showToast */); Events.sendAlarmEvent(R.string.action_snooze, R.string.label_deskclock); // Unbind here, otherwise alarm will keep ringing until activity finishes. unbindAlarmService(); } /** * Perform dismiss animation and send dismiss intent. */ private void dismiss() { mAlarmHandled = true; LogUtils.v(LOGTAG, "Dismissed: %s", mAlarmInstance); setAnimatedFractions(0.0f /* snoozeFraction */, 1.0f /* dismissFraction */); getAlertAnimator(mDismissButton, R.string.alarm_alert_off_text, null /* infoText */, getString(R.string.alarm_alert_off_text) /* accessibilityText */, Color.WHITE, mCurrentHourColor) .start(); AlarmStateManager.deleteInstanceAndUpdateParent(this, mAlarmInstance); Events.sendAlarmEvent(R.string.action_dismiss, R.string.label_deskclock); // Unbind here, otherwise alarm will keep ringing until activity finishes. unbindAlarmService(); } /** * Bind AlarmService if not yet bound. */ private void bindAlarmService() { if (!mServiceBound) { final Intent intent = new Intent(this, AlarmService.class); bindService(intent, mConnection, Context.BIND_AUTO_CREATE); mServiceBound = true; } } /** * Unbind AlarmService if bound. */ private void unbindAlarmService() { if (mServiceBound) { unbindService(mConnection); mServiceBound = false; } } private void setAnimatedFractions(float snoozeFraction, float dismissFraction) { final float alarmFraction = Math.max(snoozeFraction, dismissFraction); AnimatorUtils.setAnimatedFraction(mAlarmAnimator, alarmFraction); AnimatorUtils.setAnimatedFraction(mSnoozeAnimator, snoozeFraction); AnimatorUtils.setAnimatedFraction(mDismissAnimator, dismissFraction); } private float getFraction(float x0, float x1, float x) { return Math.max(Math.min((x - x0) / (x1 - x0), 1.0f), 0.0f); } private ValueAnimator getButtonAnimator(ImageView button, int tintColor) { return ObjectAnimator.ofPropertyValuesHolder(button, PropertyValuesHolder.ofFloat(View.SCALE_X, BUTTON_SCALE_DEFAULT, 1.0f), PropertyValuesHolder.ofFloat(View.SCALE_Y, BUTTON_SCALE_DEFAULT, 1.0f), PropertyValuesHolder.ofInt(AnimatorUtils.BACKGROUND_ALPHA, 0, 255), PropertyValuesHolder.ofInt(AnimatorUtils.DRAWABLE_ALPHA, BUTTON_DRAWABLE_ALPHA_DEFAULT, 255), PropertyValuesHolder.ofObject(AnimatorUtils.DRAWABLE_TINT, AnimatorUtils.ARGB_EVALUATOR, Color.WHITE, tintColor)); } private ValueAnimator getAlarmBounceAnimator(float translationX, final int hintResId) { final ValueAnimator bounceAnimator = ObjectAnimator.ofFloat(mAlarmButton, View.TRANSLATION_X, mAlarmButton.getTranslationX(), translationX, 0.0f); bounceAnimator.setInterpolator(AnimatorUtils.DECELERATE_ACCELERATE_INTERPOLATOR); bounceAnimator.setDuration(ALARM_BOUNCE_DURATION_MILLIS); bounceAnimator.addListener(new AnimatorListenerAdapter() { @Override public void onAnimationStart(Animator animator) { mHintView.setText(hintResId); if (mHintView.getVisibility() != View.VISIBLE) { mHintView.setVisibility(View.VISIBLE); ObjectAnimator.ofFloat(mHintView, View.ALPHA, 0.0f, 1.0f).start(); } } }); return bounceAnimator; } private Animator getAlertAnimator(final View source, final int titleResId, final String infoText, final String accessibilityText, final int revealColor, final int backgroundColor) { final ViewGroup containerView = (ViewGroup) findViewById(android.R.id.content); final Rect sourceBounds = new Rect(0, 0, source.getHeight(), source.getWidth()); containerView.offsetDescendantRectToMyCoords(source, sourceBounds); final int centerX = sourceBounds.centerX(); final int centerY = sourceBounds.centerY(); final int xMax = Math.max(centerX, containerView.getWidth() - centerX); final int yMax = Math.max(centerY, containerView.getHeight() - centerY); final float startRadius = Math.max(sourceBounds.width(), sourceBounds.height()) / 2.0f; final float endRadius = (float) Math.sqrt(xMax * xMax + yMax * yMax); final CircleView revealView = new CircleView(this).setCenterX(centerX).setCenterY(centerY) .setFillColor(revealColor); containerView.addView(revealView); // TODO: Fade out source icon over the reveal (like LOLLIPOP version). final Animator revealAnimator = ObjectAnimator.ofFloat(revealView, CircleView.RADIUS, startRadius, endRadius); revealAnimator.setDuration(ALERT_REVEAL_DURATION_MILLIS); revealAnimator.setInterpolator(REVEAL_INTERPOLATOR); revealAnimator.addListener(new AnimatorListenerAdapter() { @Override public void onAnimationEnd(Animator animator) { mAlertView.setVisibility(View.VISIBLE); mAlertTitleView.setText(titleResId); if (infoText != null) { mAlertInfoView.setText(infoText); mAlertInfoView.setVisibility(View.VISIBLE); } mContentView.setVisibility(View.GONE); getWindow().setBackgroundDrawable(new ColorDrawable(backgroundColor)); } }); final ValueAnimator fadeAnimator = ObjectAnimator.ofFloat(revealView, View.ALPHA, 0.0f); fadeAnimator.setDuration(ALERT_FADE_DURATION_MILLIS); fadeAnimator.addListener(new AnimatorListenerAdapter() { @Override public void onAnimationEnd(Animator animation) { containerView.removeView(revealView); } }); final AnimatorSet alertAnimator = new AnimatorSet(); alertAnimator.play(revealAnimator).before(fadeAnimator); alertAnimator.addListener(new AnimatorListenerAdapter() { @Override public void onAnimationEnd(Animator animator) { mAlertView.announceForAccessibility(accessibilityText); mHandler.postDelayed(new Runnable() { @Override public void run() { finish(); } }, ALERT_DISMISS_DELAY_MILLIS); } }); return alertAnimator; } }