infinite while loop, while AsyncTask is not finish

Issue

I have a SplashScreen Activity which call Asynctask Class to get information in internet.

I want to wait while my Asynctask is not finish (time during on internet speed connection)

My activity:

public static boolean test = true;

[...]

final Liste en_ce_moment = new Liste("En ce moment au cinéma", nowMovie);
mesListes.add(en_ce_moment);

//call my Asynctask file 
fetchNowMovie process = new fetchNowMovie();
process.execute();

while(test)
{

}

Intent i = new Intent(SplashScreenActivity.this, MainActivity.class);
startActivity(i);

My Asynctask:

protected void onPostExecute(Void aVoid) {
        super.onPostExecute(aVoid);

        SplashScreenActivity.test = false;

        SplashScreenActivity.nowMovie.clear();
        SplashScreenActivity.nowMovie.addAll(list);

    }

Logically, the boolean became false in onPostExecute so the while loop stop and the intent have to start but the while loop never stop...

Solution

Let's do what you want to do in a safe way by using simple interface logic:

So we added our simple interface and we re-define your MyAsnycTask class's constructor like so:

public class MyAsnycTask extends AsyncTask
{

    OnTaskFinished listener;

    // Our simple interface
    public interface OnTaskFinished {
        void TimeToNextActivity();
    }

    // Your MyAsnycTask class constructor
    public MyAsnycTask(OnTaskFinished l) {
        listener = l;
    }

    . . .

As a last line of code in onPostExecute(), we're done whatever we're doing. So tell this via our listener:

listener.TimeToNextActivity();

To use our interface that we added earlier, your Activity must implements it. So we implements it. And in implemented method, we go to next Activity with Intent:

public class MyActivity extends Activity
implements MyAsnycTask.OnTaskFinished
{

    @Override
    public void TimeToNextActivity()
    {
        // Here go to next activity
        Intent i = new Intent(this, MainActivity.class);
        startActivity(i);

    }

As we modified our MyAsnycTask class's constructor, we must initialize it like this:

MyAsnycTask process = new MyAsnycTask(this);
process.execute();

Answered By - dguy