I'm new in reactive programming. So I have problem when create a stream from an Event, like onClick, ontouch...
Can anyone help me solve this problem.
Thanks.
You would do something like this:
Observable<View> clickEventObservable = Observable.create(new Observable.OnSubscribe<View>() {
@Override
public void call(final Subscriber<? super View> subscriber) {
viewIWantToMonitorForClickEvents.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (subscriber.isUnsubscribed()) return;
subscriber.onNext(v);
}
});
}
});
// You can then apply all sorts of operation here
Subscription subscription = clickEventObservable.flatMap(/* */);
// Unsubscribe when you're done with it
subscription.unsubscribe();
Since you're using Android then you may already include the contrib rxjava-android
dependency now known as ioreactivex:rxandroid
.
They already have a class to facilitate this. The method is ViewObservable.clicks
. You can use it like so.
Observable<View> buttonObservable = ViewObservable.clicks(initiateButton, false);
buttonObservable.subscribe(new Action1<View>() {
@Override
public void call(View button) {
// do what you need here
}
});
Edit: Since version 1.x, ViewObservable
and many helper classes are removed from RxAndroid. You will need RxBinding library instead.
Observable<Void> buttonObservable = RxView.clicks(initiateButton);
buttonObservable.subscribe(new Action1<Void>() {
@Override
public void call(Void x) {
// do what you need here
}
});