android app中如何获取电源锁保持屏幕常亮

android app中如何获取电源锁保持屏幕常亮

protected void screen_on() {

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

}

protected void screen_off() {

getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

}