Android 判断屏幕开关状态方式总结

android判断屏幕开关状态

 方法一：使用系统服务

powermanager pm= (powermanager) mcontext.getsystemservice(context.power_service);

    if(!pm.isscreenon())
    {
      //熄屏状态
    }

方法二：使用广播

public class screenreceiver extends broadcastreceiver {




  @override
  public void onreceive(context context, intent intent) {




    if (intent.getaction().equals(intent.action_screen_off)) {
      
//收到亮屏广播

    } else if (intent.getaction().equals(intent.action_screen_on)) {

//收到熄屏广播

    }


  }
  }

//注册广播
screenreceiver sonbroadcastreciver=new screenreceiver();
    intentfilter recevierfilter=new intentfilter();
    recevierfilter.addaction(intent.action_screen_on);
    recevierfilter.addaction(intent.action_screen_off);
    registerreceiver(sonbroadcastreciver, recevierfilter);


//取消注册
if(sonbroadcastreciver!=null)
    {
      unregisterreceiver(sonbroadcastreciver);
    }

注意：亮屏和熄屏广播只能通过动态注册才能收到。

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