How to stop an asynchronus task midway

Issue

I have an Async task:

private class UpdateApp extends AsyncTask<Void, Void, String> {

    @Override
    protected String doInBackground(Void... params) {
        String result = "";

        try{
            PackageInfo packageInfo = getPackageManager().getPackageInfo(getPackageName(),0);
            curVersionCode = packageInfo.versionCode;
        } catch (Exception Ignored) {

        }
        result = check(curVersionCode);
        return result;
    }

 ...


  @Override
    protected void onPostExecute(final String success){
        if (success != "a") this.cancel(true); //Here's the confusion
        switch (success){
            case "z":
                new AlertDialog.Builder(mContext).setMessage("0").setCancelable(true).show();
                break;
            case "a":
                new AlertDialog.Builder(mContext).setMessage("1").setCancelable(true).show();
                break;
            default:new AlertDialog.Builder(mContext).setMessage("default").setCancelable(true).show();
                break;
        }
    }

I want to stop the Asynctask if success is !=a. How to achieve that?

It is possible to let it continue and switch through only if success == a and break otherwise. What will be best - let it continue or cancel the task midway?

Solution

If the code in onPostExecute() runs than doInBackground is finished().

So the AsyncTask has stopped then.

It does not have to be cancelled anymore.

Does not make sense.

Answered By - greenapps