RxJava/RxBinding - check if subscription exists

Question

I'm using RxBinding and creating a subscription in RecyclerView adapter in onBindViewHolder method, which reuses items. Is there any simple way to check if I already assigned subscriber to an EditText object and if so delete that subscription?

My code looks like this

public void onBindViewHolder(final ItemViewHolder holder, int position) {

    holder.text.setText(mProvider.get(position).text);
    Subscription textSub = RxTextView.textChanges(holder.text).subscribe(new Action1<CharSequence>() {
        @Override
        public void call(CharSequence charSequence) {
            ...
        }
    });
    subscriptions.add(textSub);
}

score 3 · Accepted Answer · edited Nov 10 '16 at 14:36

3

Is there anyway to check if I already assigned subscriber to an EditText object and if so delete that subscription?

you could keep it as class member. E.g.

Subscription textSub = Subscriptions.unsubscribed();

and then

public void onBindViewHolder(final ItemViewHolder holder, final int position) {

     holder.text.setText(mProvider.get(position).text);
     textSub.unsubscribe();
     textSub = RxTextView.textChanges(holder.text).subscribe(new Action1<CharSequence>() {
          @Override
          public void call(CharSequence charSequence) {
               ...
          }
      });
}

edited Nov 10 '16 at 14:36

Ziem

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answered Nov 09 '16 at 09:33

Blackbelt

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On the side, is this dynamic subscription juggling efficient-wise? And thank You for this neat and clean solution. – M Tomczynski Nov 09 '16 at 09:54
1

*is this dynamic subscription juggling efficient-wise* it is. You are welcome – Blackbelt Nov 09 '16 at 09:57

RxJava/RxBinding - check if subscription exists

1 Answers1