android 点亮屏幕

@Override
public void onReceive(Context context, Intent intent) {
		System.out.println("广播接收到");
		  KeyguardManager km= (KeyguardManager) context.getSystemService(Context.KEYGUARD_SERVICE);  
	        KeyguardManager.KeyguardLock kl = km.newKeyguardLock("unLock");  
	        //解锁  
	    //    kl.disableKeyguard();  
	        //获取电源管理器对象  
	        PowerManager pm=(PowerManager) context.getSystemService(Context.POWER_SERVICE);  
	        //获取PowerManager.WakeLock对象,后面的参数|表示同时传入两个值,最后的是LogCat里用的Tag  
	        PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.ACQUIRE_CAUSES_WAKEUP | PowerManager.FULL_WAKE_LOCK,"bright");  
	        //点亮屏幕  
	        wl.acquire();  
	        //释放  
	      //  wl.release(); 
	}

<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.DISABLE_KEYGUARD" />