AndroidRX - run method in background

Question

I created simple activity with infinity progres bar, and I\'am trying to run time consuming method using RxJava to prevent UI thread from blocking, but everytime UI thread is bl

Answer 1

Your doHeavyStuff() executes computation on calling thread, you just wrap your result into Observable. In order to wrap computation into observable you should use defer

Observable.defer(new Func0>() {
    @Override
    public Observable call() {
        return Observable.just(doHeavyStuff());
    }
});

then you can specify threads by subscribeOn and observeOn methods