Android: How can I pass parameters to AsyncTask's onPreExecute()?

Question

I use an AsyncTask for loading operations that I implemented as an inner class.

In onPreExecute() I show a loading dialog which I then hid

Answer 1

You can override the constructor. Something like:

private class MyAsyncTask extends AsyncTask {

    public MyAsyncTask(boolean showLoading) {
        super();
        // do stuff
    }

    // doInBackground() et al.
}

Then, when calling the task, do something like:

new MyAsyncTask(true).execute(maybe_other_params);

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Edit: this is more useful than creating member variables because it simplifies the task invocation. Compare the code above with:

MyAsyncTask task = new MyAsyncTask();
task.showLoading = false;
task.execute();