Question

我的日食中有2个应用程序，它们都称为方法

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

但是一个工作正常，其他工作根本不起作用（屏幕仍然会在一段时间后完全变暗，并且出现锁定屏幕）。我使用的代码完全相同，我很沮丧为什么它不适用于第二个应用程序。任何人都知道这是怎么回事？

以下是我的第二个应用的代码：

private void DimScreen()   //isDim is false initially
{
    Log.i(TAG, "isDim"+String.valueOf(isDim));
    SharedPreferences pref = getSharedPreferences(null, 0);
    String enableDim = pref.getString("enableDimScreen", "true"); //default preference is true(to dim screen)
    Log.i(TAG, "inside Dimscreen(), enableDim="+enableDim);
    if(enableDim.equals("true")&&!isDim)    //if the user want to dim the screen
    {
        Toast.makeText(StartActivity.this, "Dimming screen in 5 seconds, press Stop button to turn on the screen", Toast.LENGTH_SHORT).show();
        handler.postDelayed(r, 5000);
    }
    else {
        if(!isDim)  //if the user doesn't want to dim the screen
        {
            getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
            isDim =true;
            Log.i(TAG, "inside Dimscreen() else");
        }
    }

}
private Handler handler= new Handler();
    Runnable r = new Runnable()
    {
        public void run()
        {
            getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
            WindowManager.LayoutParams lp = getWindow().getAttributes();
            lp.screenBrightness=0.01f;
            getWindow().setAttributes(lp);  
            isDim =true;
            Log.i(TAG, "isDim "+String.valueOf(isDim));
        }
    };

编辑：我在我想要在第二个应用程序上调暗的活动上运行了chrome meter和进度条。

FLAG_KEEP_SCREEN_ON无法正常工作

0 个答案: