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>