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>