Android 亮屏，暗屏

1、亮屏和暗屏的控制
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);  
PowerManager.WakeLock wakeLock = pm.newWakeLock(PowerManager.SCREEN_DIM_WAKE_LOCK, "TAG");  
// 点亮
wakeLock.acquire();  

//释放锁，屏幕熄灭。
wl.release();

2、亮屏和暗屏还有解锁的监听事件
 final IntentFilter filter = new IntentFilter();    
 filter.addAction(Intent.ACTION_SCREEN_OFF);    
 filter.addAction(Intent.ACTION_SCREEN_ON);   
 filter.addAction(Intent.ACTION_USER_PRESENT);
 registerReceiver(mBatInfoReceiver, filter);

BroadcastReceiver mBatInfoReceiver = new BroadcastReceiver() {    
            @Override    
            public void onReceive(final Context context, final Intent intent) {  
                  
 
                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...");    
               }    
                 
               else if(Intent.ACTION_USER_PRESENT.equals(action))  
               {  
                   Log.d(TAG, "screen is unlock...");   
               }  
                 
            }    
        };