手機屏幕鎖屏和解鎖都是會發廣播出來的，我們只要用BroadcaseReceiver來監聽相應的Action即可，

public void onCreate(final Bundle savedInstanceState) {final IntentFilter filter = new IntentFilter();filter.addAction(Intent.ACTION_SCREEN_OFF);filter.addAction(Intent.ACTION_SCREEN_ON);registerReceiver(mBatInfoReceiver, filter); }private final BroadcastReceiver mBatInfoReceiver = new BroadcastReceiver() {@Overridepublic void onReceive(final Context context, final Intent intent) {final String action = intent.getAction();if(Intent.ACTION_SCREEN_ON.equals(action)){Log.d(TAG, "screen is on...");}else if(Intent.ACTION.equals(action)){Log.d(TAG, "screen is off...");}}};

總結

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