SugarTask.with(this) // Activity|FragmentActivity(v4)|Fragment|Fragment(v4)
        .assign(new SugarTask.TaskDescription() {
            @Override
            public Object onBackground() {
                // Do what you want to do on background thread.
                // If you want to post something to MainThread,
                // just call SugarTask.post(YOUR_MESSAGE).

                // Return your finally result(Nullable).
                return null;
            }
        })
        .handle(new SugarTask.MessageListener() {
            @Override
            public void handleMessage(@NonNull Message message) {
                // Receive message in MainThread which sent from WorkerThread,
                // update your UI just in time.
            }
        })
        .finish(new SugarTask.FinishListener() {
            @Override
            public void onFinish(@Nullable Object result) {
                // If WorkerThread finish without Exception and lifecycle safety,
                // deal with your WorkerThread result at here.
            }
        })
        .broken(new SugarTask.BrokenListener() {
            @Override
            public void onBroken(@NonNull Exception e) {
                // If WorkerThread finish with Exception and lifecycle safety,
                // deal with Exception at here.
            }
        })
        .execute();