如何在课程中调用载入微调器

Question

I am trying to load a "loading spinner" from a class and I am wondering what is the best way to achieve this. In my class there is a Asynch task in which I want the spinner to start and finish. I have created my loading spinner in a layout now what I am trying to do is I want the spinner to be shown while the Asynch task finishes.

Here is my class:

public class ClusterManager extends ClusterManager {

public ClusterManager() {
    super();        
}

private void reload() {

    new AsyncTask<Void, Void, Void>()
    {
        @Override
        protected Void doInBackground(Void... params)
        {
            //Start spinner here
        }

        @Override
        protected void onPostExecute(Void aVoid)
        {
            //Stop/Remove the spinner
        }
    }.execute();

}

And my Custom spinner

<?xml version="1.0" encoding="utf-8"?>
<ProgressBar
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/LoadingSpinner"
android:layout_width="match_parent"
android:layout_height="match_parent"
style="?android:attr/progressBarStyleLarge"
android:layout_centerHorizontal="true">

</ProgressBar>

Answer 1

I think you can load a ProgressDialog in the constructor of the class and show it of hide it in the two callbacks.

Another alternative is to pass a listener from the activity or fragment and behing notify when to show or hide. In this way you can have to progress bar in your layout.