Question

I have an AsyncTask in my program that seems to stop after onPreExecute(), after the app is run several times. What I mean is, I can use the app and everything works about 10-20 runs, but then it halts. Here is what’s going on:

private class MyTask extends AsyncTask<String, Void, Data> {

    protected void onPreExecute() {
        // show loading dialog
        Log.d(TAG, "end onPreExecute");
    }

    protected Data doInBackground(String... params) {
        Log.d(TAG, "start doInBackground");
        // do stuff
    }

    protected void onPostExecute(Data myData) {
        // do stuff
    }

}

When it stops working, what happens is that the loading dialog just keeps loading forever, and "end onPreExecute" prints but "start doInBackground" does not.

Why might that be?

Answer 1

It’s hard to tell where the problem is. As your Async Task seems to work the first couple of times, it could be that this API-feature is just too “unstable” for your intention…

A solution for your issue could simply be, to replace the AsyncTask by a different Thread solution:

• Here is a post where this issue was solved by a traditional Thread.
• Here is a post which shows how to use an Handler.

Hope that helps!