Android手机屏幕锁屏监测

手机屏幕锁屏和解锁都是会发广播出来的，我们只要用BroadcaseReceiver来监听相应的Action即可，

必须动态在代码中注册才能够接受到广播。

1. public void onCreate(final Bundle savedInstanceState) {  
2.       final IntentFilter filter = new IntentFilter();  
3.       filter.addAction(Intent.ACTION_SCREEN_OFF);  
4.       filter.addAction(Intent.ACTION_SCREEN_ON);  
5.       registerReceiver(mBatInfoReceiver, filter);  
6.  
7.  
8.  
9.   private final BroadcastReceiver mBatInfoReceiver = new BroadcastReceiver() {  
10.       @Override  
11.       public void onReceive(final Context context, final Intent intent) {  
12.           final String action = intent.getAction();  
13.          if(Intent.ACTION_SCREEN_ON.equals(action)){  
14.               Log.d(TAG, "screen is on...");  
15.          }else if(Intent.ACTION.equals(action)){  
16.               Log.d(TAG, "screen is off...");  
17.  
18.          }  
19.       }  
20.   };