Question

如何在正常程序中隐藏 progressbar 。我用了代码：

registerAsyncTask = new RegisteAsyncTask(infogateway,getApplicationContext());
pb.setVisibility(View.VISIBLE);
registerAsyncTask.execute(phone, name, null,gender,password, email, null,null,null,role,null,null);

我必须在哪里使进度条不可见？

Answer 1

请查看官方指南AsyncTask。

protected void onPreExecute()
  { 
 Log.d(LOG_TAG, "Pre-Execute");
 super.onPreExecute(); 
 pb.setVisibility( View.INVISIBLE); 
  } 


    private class doSomething extends AsyncTask<Void, Void, Void> {

            @Override
            protected void onPreExecute() {
                //Inflate you view or do anything here before loading stuff
            }

            protected Void doInBackground(Void... urls) {
                //loading stuff
            }

            protected void onProgressUpdate(String... progress) {
                //change your UI - like a progressbar
            }

            @Override
            protected void onPostExecute(String unused) {
                //Hide the progressbar
            }

我希望它可以帮到你。

Answer 2

尝试在onPreExecute()中设置可见：

@Override
protected void onPreExecute() {
    super.onPreExecute();
    progress.setVisibility(View.VISIBLE);
}

并在onPostExecute()完成任务后设置隐身：

@Override
protected void onPostExecute(String s) {
    super.onPostExecute(s);
    progress.setVisibility(View.GONE);    
}

如何在使用asynctask时隐藏android中的进度条

2 个答案: