PhoneWindowManager长按电源键流程
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2022-06-06 09:19:50
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一、代码路径:
frameworks/base/services/core/java/com/android/server/policy/PhoneWindowManager.java
1、interceptKeyBeforeDispatching方法处理
@Override
public long interceptKeyBeforeDispatching(WindowState win, KeyEvent event, int policyFlags) {
final boolean keyguardOn = keyguardOn();
final int keyCode = event.getKeyCode();
final int repeatCount = event.getRepeatCount();
final int metaState = event.getMetaState();
final int flags = event.getFlags();
final boolean down = event.getAction() == KeyEvent.ACTION_DOWN;
final boolean canceled = event.isCanceled();
/// M: Add log.
if ((false == IS_USER_BUILD) || DEBUG_INPUT) {
Log.d(TAG, "interceptKeyTi keyCode=" + keyCode + " down=" + down + " repeatCount="
+ repeatCount + " keyguardOn=" + keyguardOn + " mHomePressed=" + mHomePressed
+ " canceled=" + canceled + " metaState:" + metaState);
}
/// M: Key remapping
if (SystemProperties.get("ro.mtk_hw_key_remapping").equals("1")) {
// Check keys
if (keyCode == KeyEvent.KEYCODE_VOLUME_UP ||
keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) {
// Ignore these keyes, handled when queuing
return -1;
}
}
}
2、interceptKeyBeforeDispatching方法处理:
//按键的处理
case KeyEvent.KEYCODE_POWER: {
result &= ~ACTION_PASS_TO_USER;
isWakeKey = false; // wake-up will be handled separately
if (down) {
interceptPowerKeyDown(event, interactive);
} else {
interceptPowerKeyUp(event, interactive, canceled);
}
break;
}
private void interceptPowerKeyDown(KeyEvent event, boolean interactive) {
// Hold a wake lock until the power key is released.
if (!mPowerKeyWakeLock.isHeld()) {
mPowerKeyWakeLock.acquire();
}
// Cancel multi-press detection timeout.
if (mPowerKeyPressCounter != 0) {
mHandler.removeMessages(MSG_POWER_DELAYED_PRESS);
}
// Detect user pressing the power button in panic when an application has
// taken over the whole screen.
boolean panic = mImmersiveModeConfirmation.onPowerKeyDown(interactive,
SystemClock.elapsedRealtime(), isImmersiveMode(mLastSystemUiFlags));
if (panic) {
mHandler.post(mHiddenNavPanic);
}
// Latch power key state to detect screenshot chord.
if (interactive && !mScreenshotChordPowerKeyTriggered
&& (event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) {
mScreenshotChordPowerKeyTriggered = true;
mScreenshotChordPowerKeyTime = event.getDownTime();
interceptScreenshotChord();
}
// Stop ringing or end call if configured to do so when power is pressed.
TelecomManager telecomManager = getTelecommService();
boolean hungUp = false;
if (telecomManager != null) {
if (telecomManager.isRinging()) {
// Pressing Power while there's a ringing incoming
// call should silence the ringer.
telecomManager.silenceRinger();
} else if ((mIncallPowerBehavior
& Settings.Secure.INCALL_POWER_BUTTON_BEHAVIOR_HANGUP) != 0
&& telecomManager.isInCall() && interactive) {
// Otherwise, if "Power button ends call" is enabled,
// the Power button will hang up any current active call.
hungUp = telecomManager.endCall();
}
}
// If the power key has still not yet been handled, then detect short
// press, long press, or multi press and decide what to do.
mPowerKeyHandled = hungUp || mScreenshotChordVolumeDownKeyTriggered
|| mScreenshotChordVolumeUpKeyTriggered;
if (!mPowerKeyHandled) {
if (interactive) {
// When interactive, we're already awake.
// Wait for a long press or for the button to be released to decide what to do.
if (hasLongPressOnPowerBehavior()) {
Message msg = mHandler.obtainMessage(MSG_POWER_LONG_PRESS);
msg.setAsynchronous(true);
mHandler.sendMessageDelayed(msg,
ViewConfiguration.get(mContext).getDeviceGlobalActionKeyTimeout());
}
} else {
wakeUpFromPowerKey(event.getDownTime());
if (mSupportLongPressPowerWhenNonInteractive && hasLongPressOnPowerBehavior()) {
Message msg = mHandler.obtainMessage(MSG_POWER_LONG_PRESS);
msg.setAsynchronous(true);
mHandler.sendMessageDelayed(msg,
ViewConfiguration.get(mContext).getDeviceGlobalActionKeyTimeout());
mBeganFromNonInteractive = true;
} else {
final int maxCount = getMaxMultiPressPowerCount();
if (maxCount <= 1) {
mPowerKeyHandled = true;
} else {
mBeganFromNonInteractive = true;
}
}
}
}
}
3、接下来是Handler发送一个Power长按消息出去: Message msg = mHandler.obtainMessage(MSG_POWER_LONG_PRESS);
if (!mPowerKeyHandled) {
if (interactive) {
// When interactive, we're already awake.
// Wait for a long press or for the button to be released to decide what to do.
if (hasLongPressOnPowerBehavior()) {
//发送MSG_POWER_LONG_PRESS消息去处理
Message msg = mHandler.obtainMessage(MSG_POWER_LONG_PRESS);
msg.setAsynchronous(true);
mHandler.sendMessageDelayed(msg,
ViewConfiguration.get(mContext).getDeviceGlobalActionKeyTimeout());
}
} else {
wakeUpFromPowerKey(event.getDownTime());
if (mSupportLongPressPowerWhenNonInteractive && hasLongPressOnPowerBehavior()) {
//发送MSG_POWER_LONG_PRESS消息去处理
Message msg = mHandler.obtainMessage(MSG_POWER_LONG_PRESS);
msg.setAsynchronous(true);
mHandler.sendMessageDelayed(msg,
ViewConfiguration.get(mContext).getDeviceGlobalActionKeyTimeout());
mBeganFromNonInteractive = true;
} else {
final int maxCount = getMaxMultiPressPowerCount();
if (maxCount <= 1) {
mPowerKeyHandled = true;
} else {
mBeganFromNonInteractive = true;
}
}
}
private class PolicyHandler extends Handler {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MSG_ENABLE_POINTER_LOCATION:
enablePointerLocation();
break;
case MSG_DISABLE_POINTER_LOCATION:
disablePointerLocation();
break;
case MSG_DISPATCH_MEDIA_KEY_WITH_WAKE_LOCK:
dispatchMediaKeyWithWakeLock((KeyEvent)msg.obj);
break;
case MSG_DISPATCH_MEDIA_KEY_REPEAT_WITH_WAKE_LOCK:
dispatchMediaKeyRepeatWithWakeLock((KeyEvent)msg.obj);
break;
case MSG_DISPATCH_SHOW_RECENTS:
showRecentApps(false);
break;
case MSG_DISPATCH_SHOW_GLOBAL_ACTIONS:
showGlobalActionsInternal();
break;
case MSG_KEYGUARD_DRAWN_COMPLETE:
if (DEBUG_WAKEUP) Slog.w(TAG, "Setting mKeyguardDrawComplete");
finishKeyguardDrawn();
break;
case MSG_KEYGUARD_DRAWN_TIMEOUT:
Slog.w(TAG, "Keyguard drawn timeout. Setting mKeyguardDrawComplete");
finishKeyguardDrawn();
break;
case MSG_WINDOW_MANAGER_DRAWN_COMPLETE:
if (DEBUG_WAKEUP) Slog.w(TAG, "Setting mWindowManagerDrawComplete");
finishWindowsDrawn();
break;
case MSG_HIDE_BOOT_MESSAGE:
handleHideBootMessage();
break;
case MSG_LAUNCH_VOICE_ASSIST_WITH_WAKE_LOCK:
launchVoiceAssistWithWakeLock(msg.arg1 != 0);
break;
case MSG_POWER_DELAYED_PRESS:
powerPress((Long)msg.obj, msg.arg1 != 0, msg.arg2);
finishPowerKeyPress();
break;
case MSG_POWER_LONG_PRESS:
powerLongPress();//电源按键长按事件
break;
case MSG_UPDATE_DREAMING_SLEEP_TOKEN:
updateDreamingSleepToken(msg.arg1 != 0);
break;
}
}
}
private void powerLongPress() {
final int behavior = getResolvedLongPressOnPowerBehavior();
switch (behavior) {
case LONG_PRESS_POWER_NOTHING:
break;
case LONG_PRESS_POWER_GLOBAL_ACTIONS:
mPowerKeyHandled = true;
if (!performHapticFeedbackLw(null, HapticFeedbackConstants.LONG_PRESS, false)) {
performAuditoryFeedbackForAccessibilityIfNeed();
}
showGlobalActionsInternal();//弹出电源对话框处理
/**
* ATC: 5s timeout to auto-confirm for IPO auto-test.
*/
boolean ipoAutoTestSupport =
SystemProperties.get("sys.ipo.autotest").equals("1") ? true : false;
if(ipoAutoTestSupport) {
mHandler.postDelayed(new Runnable (){
@Override
public void run() {
if((mGlobalActions != null) && mGlobalActions.isShowing()){
finishPowerKeyPress();
sendCloseSystemWindows(SYSTEM_DIALOG_REASON_GLOBAL_ACTIONS);
mWindowManagerFuncs.shutdown(behavior == LONG_PRESS_POWER_SHUT_OFF);
}
}
}, 5000);
}
break;
case LONG_PRESS_POWER_SHUT_OFF:
case LONG_PRESS_POWER_SHUT_OFF_NO_CONFIRM:
mPowerKeyHandled = true;
performHapticFeedbackLw(null, HapticFeedbackConstants.LONG_PRESS, false);
sendCloseSystemWindows(SYSTEM_DIALOG_REASON_GLOBAL_ACTIONS);
mWindowManagerFuncs.shutdown(behavior == LONG_PRESS_POWER_SHUT_OFF);
break;
}
}
//弹出对话框
void showGlobalActionsInternal() {
sendCloseSystemWindows(SYSTEM_DIALOG_REASON_GLOBAL_ACTIONS);
if (mGlobalActions == null) {
//就是处理关机、重启、飞行模式的对话框
mGlobalActions = new GlobalActions(mContext, mWindowManagerFuncs);
}
final boolean keyguardShowing = isKeyguardShowingAndNotOccluded();
mGlobalActions.showDialog(keyguardShowing, isDeviceProvisioned());
if (keyguardShowing) {
// since it took two seconds of long press to bring this up,
// poke the wake lock so they have some time to see the dialog.
mPowerManager.userActivity(SystemClock.uptimeMillis(), false);
}
}
二、frameworks/base/services/core/java/com/android/server/policy/GlobalActions.java
public GlobalActions(Context context, WindowManagerFuncs windowManagerFuncs) {
mContext = context;
mWindowManagerFuncs = windowManagerFuncs;
mAudioManager = (AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE);
mDreamManager = IDreamManager.Stub.asInterface(
ServiceManager.getService(DreamService.DREAM_SERVICE));
// receive broadcasts
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
filter.addAction(Intent.ACTION_SCREEN_OFF);
filter.addAction(TelephonyIntents.ACTION_EMERGENCY_CALLBACK_MODE_CHANGED);
context.registerReceiver(mBroadcastReceiver, filter);
ConnectivityManager cm = (ConnectivityManager)
context.getSystemService(Context.CONNECTIVITY_SERVICE);
mHasTelephony = cm.isNetworkSupported(ConnectivityManager.TYPE_MOBILE);
// get notified of phone state changes
TelephonyManager telephonyManager =
(TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
telephonyManager.listen(mPhoneStateListener, PhoneStateListener.LISTEN_SERVICE_STATE);
mContext.getContentResolver().registerContentObserver(
Settings.Global.getUriFor(Settings.Global.AIRPLANE_MODE_ON), true,
mAirplaneModeObserver);
Vibrator vibrator = (Vibrator) mContext.getSystemService(Context.VIBRATOR_SERVICE);
mHasVibrator = vibrator != null && vibrator.hasVibrator();
mShowSilentToggle = SHOW_SILENT_TOGGLE && !mContext.getResources().getBoolean(
com.android.internal.R.bool.config_useFixedVolume);
}
备注:关机、重启、飞行模式等选项
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