android 判断屏幕是否关闭

public void onCreate(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() {  

        @Override  

        public 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_SCREEN_OFF.equals(action)){  

                Log.d(TAG, "----------------- screen is off...");  

   

           }  

        }  

    };