If Subscriber was unsubscribed once it won't receive onNext next time somebody will subscribe using it

[lexer]

private Subscriber<Location> onLocationUpdated = new Subscriber<Location>() {
    @Override
    public void onNext(Location location) {
       // never called when was resumed after pause
    }
    ...
}

Subscription subscription = Subscriptions.empty();
void onResume() {
    subscription = locationService.observe().subscribe(onLocationUpdated);
}

void onPause() {
    subscription.unsubscribe();
}

I have a class field with subscriber implementation. When my UI resumed I subscribe using that subscriber on location updates. When UI is paused I unsubscribe.

Subscriber is field is not destroyed when UI is paused and should be reused for subscribe on UI resume. Unfortunately onNext will be never called.

Guess this related to this fix #1409.

[benjchristensen]

A Subscriber should not be reused. It will not work because it is a Subscription and once unsubscribed is done.

Use an Observer instead if you want to reuse it.

[lexer]

Got it!