Cancel Asynctask When User Presses Back Button

I have an AsyncTask in which I show a ProgressDialog in the onPreExecute, and hide it again in onPostExecute, something like final class UploadTask extends AsyncTask { ProgressD

Solution 1:

I haven't tested this, but try something like this:

finalclassUploadTaskextendsAsyncTaskimplementsOnDismissListener{
       ProgressDialogdialog=newProgressDialog(...);

       protectedonPreExecute() {
           dialog.setOnDismissListener(this);
          dialog.show();
       }
       protectedonPostExecute() {
          dialog.hide();
       }

       @OverridepublicvoidonDismiss(DialogInterface dialog) {
            this.cancel(true);
        }
};

Solution 2:

I think you are looking for this: onCancelled()

http://developer.android.com/reference/android/os/AsyncTask.html