Android保持背光常亮的设置方法

1.
    为窗口添加flag:
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON,

    WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
   

    或者
    getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

 

2.

   设置Layout中View的keepScreenOn属性: android:keepScreenOn="true"
  必须是可显示view才会起作用。

 

3.

   使用电源管理：

   

public class WakeLockActivity extends Activity { 
   
    PowerManager powerManager = null; 
    WakeLock wakeLock = null; 
   
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        this.setContentView(R.layout.main); 
        this.powerManager = (PowerManager) this 
                .getSystemService(Context.POWER_SERVICE); 
        this.wakeLock = this.powerManager.newWakeLock( 
                PowerManager.FULL_WAKE_LOCK, "My Lock"); 
    } 
   
    @Override 
    protected void onResume() { 
        super.onResume(); 
        this.wakeLock.acquire(); 
    } 
   
    @Override 
    protected void onPause() { 
        super.onPause(); 
        this.wakeLock.release(); 
    } 
   
}

添加权限：

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