AsyncTask and error handling on Android

Question

I\'m converting my code from using Handler to AsyncTask. The latter is great at what it does - asynchronous updates and handling of results in the

Answer 1

Actually, AsyncTask use FutureTask & Executor, FutureTask support exception-chain First let's define a helper class

public static class AsyncFutureTask extends FutureTask {

    public AsyncFutureTask(@NonNull Callable callable) {
        super(callable);
    }

    public AsyncFutureTask execute(@NonNull Executor executor) {
        executor.execute(this);
        return this;
    }

    public AsyncFutureTask execute() {
        return execute(AsyncTask.THREAD_POOL_EXECUTOR);
    }

    @Override
    protected void done() {
        super.done();
        //work done, complete or abort or any exception happen
    }
}

Second, let's use

    try {
        Log.d(TAG, new AsyncFutureTask(new Callable() {
            @Override
            public String call() throws Exception {
                //throw Exception in worker thread
                throw new Exception("TEST");
            }
        }).execute().get());
    } catch (InterruptedException e) {
        e.printStackTrace();
    } catch (ExecutionException e) {
        //catch the exception throw by worker thread in main thread
        e.printStackTrace();
    }