Android ProgressBar使应用程序运行速度变慢 [英] Android ProgressBar makes app to work slower

问题描述

我正在尝试在postexecute上显示进度条，并且在postExecute中不可见，并且它可以工作，但是却使应用程序运行非常缓慢，这是为什么有任何简单的方法可以使其正常运行(不缓慢)? ? 这是我的代码:

I am making to show progressbar on postexecute and to be not visible in postExecute, and it works, but makes the app to work very slow, what is the reason is there any simple way to make it work normal(not slowly)? This is my code:

bar = (ProgressBar) this.findViewById(R.id.progressBar);     
getInfo extends AsyncTask<void, void, void>{   
    protected void onPreExecute() {   
        bar.setVisibility(View.VISIBLE);
    }   
    protected void doInBackground(String... params)                                                  
                  do smth}  
    protected void onPostExecute(Boolean results) {
              bar.setVisibility(View.GONE);
    }
}

推荐答案

您是否正在使用自定义进度栏，并且是否在应用程序的初始屏幕上显示进度栏?

Are you using a custom progress bar and are you showing the progress bar at the initial screen of your application?

如果您使用的是自定义进度栏，则在应用程序的初次启动过程中可能会花费一些时间来加载.我遇到了类似的问题，该问题是由于自定义进度栏中的android:type ="sweep"引起的. EG:下方

If you are using a custom progress bar then it might take some time to load during the initial startup of your app. I had a similar issue and the issue was due to the android:type="sweep" in the custom progress bar. EG: below

    <shape>
        <gradient
            android:startColor="#000001"
            android:centerColor="#ffffff"
            android:centerY="0.5"
            android:type="sweep"/>
    </shape>

不确定为什么type ="sweep"可能导致此问题，但是在删除它之后，该应用程序似乎很快启动了

Not sure why the type="sweep" could cause the issue but, after removing it, the application seemed to start up pretty quick

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