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Thread: trying to cancel AsyncTask almost there just a little push

  1. #1
    Join Date
    Apr 2018
    Posts
    1

    trying to cancel AsyncTask almost there just a little push

    im trying to get the cancel a loop by calling cancel but it wont cancel out out. can you tell why it wont cancel out.. here is the code

    Code:
    class MyAsyncTask extends AsyncTask<Object, Void, Void>
    {
        @Override
        protected void onCancelled()
        {
            super.onCancelled();
            this.cancel(true);
    
            Log.d( String.valueOf( isCancelled() ), "onCancelled() called");
        }
    
        @Override
        protected Void doInBackground(Object... params)
        {
            while (!isCancelled())
            {
                Log.d( String.valueOf( isCancelled() ), "inside the loop");
                if (isCancelled())
                    break;
            }
            return null;
        }
    }
    here is the call

    Code:
    new MyAsyncTask().execute();
    and here is the call to cancel it

    Code:
    AsyncTask task = new MyAsyncTask().execute();
    task.cancel(true);
    Last edited by 2kaud; April 15th, 2018 at 10:12 AM. Reason: Added code tags

  2. #2
    2kaud's Avatar
    2kaud is offline Super Moderator Power Poster
    Join Date
    Dec 2012
    Location
    England
    Posts
    6,511

    Re: trying to cancel AsyncTask almost there just a little push

    [When posting code, please use code tags so that the code is readable. Go Advanced, select the formatted code and click '#'].

    Cheers!
    All advice is offered in good faith only. All my code is tested (unless stated explicitly otherwise) with the latest version of Microsoft Visual Studio (using the supported features of the latest standard) and is offered as examples only - not as production quality. I cannot offer advice regarding any other c/c++ compiler/IDE or incompatibilities with VS. You are ultimately responsible for the effects of your programs and the integrity of the machines they run on. Anything I post, code snippets, advice, etc is licensed as Public Domain https://creativecommons.org/publicdomain/zero/1.0/ and can be used without reference or acknowledgement. Also note that I only provide advice and guidance via the forums - and not via private messages!

    C++17 Compiler: Microsoft VS2017 (15.9.3)

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