Android Loading Screen for AsyncHttpRequest

Question

I have a list in my app that is populated via a http request to our database API. Then it parses the JSONArray that is returned, and sets the list appropriately. By the way I am quite new to Java coding and the eclipse environment.

I have achieved the http request with the custom library developed by loopj (located here)

However, when I go to the list in my app, it freezes for a second or two (while it collects the data) and then populates this list and everything works fine. Is it possible to implement a loader that will display until the list has completed loading with the current AsyncHttpClient I am using? Or do I need to change to a different one. I can't provide any code due to contractual agreements.

Thanks for any suggestions!

Answer 1

I do something like this in my Async class

public class Async extends AsyncTask {
    private ProgressDialog dialog;
    public Context applicationContext;

    @Override
    protected void onPreExecute() {
            //this should appear like a loading bar
        this.dialog = ProgressDialog.show(applicationContext, "Calling",
                "Update List ...", true);
    }

    @Override
    protected Object doInBackground(Object... params) {
            //call your method and threat response
        return SyncActivity.getUpdatedList();

    }

    @Override
    protected void onPostExecute(Object result) {
        this.dialog.cancel();
    }

}