Hot to track progress with RxAndroid?

Question

I have in my project Retrofit library and RxAndroid.

For example I've called some method from my api

public void loadSomething() {
   getApi().getSomething()                
      .subscribeOn(Schedulers.io())
      .observeOn(AndroidSchedulers.mainThread())
      .subscribe(new Subscriber<Something>() {
                    @Override
                    public void onCompleted() {

                    }
                    @Override
                    public void onError(Throwable e) {

                    }
                    @Override
                    public void onNext(Something s) {

                    }
                });
}

How should I track progress of this observable for example to prevent user to start it second time? Should add my custom flags something like before start set inProgress = true; and in all callback methods set inProgress = false; ?

Can I do it with RxAndroid functionality? Or is it guarantee that one call to api will not be started few times in parallel?

Answer 1

You can use the Do operator .

You can set the inPogress = true in doOnSubscribe() and inProgress = false in doOnComplete() .

Also calling subscribe returns a Subscription . You can use it to check if the call has finished using isUnsubscribed() .