Explicitly call `unbind()` in Activity if `ListenerClass` has valid `remover`???

if ListenerClass implementation has a valid remover, e.g. OnPageChange and OnTextChanged, the remover method is added in the implementation of Unbinder.unbind() method, by BindingSet.removerOrSetter() method.

So, for Activities that reference ListenerClass implementations with a valid remover, I did not see a explicit or implicit method to call the unbind() method of ButterKnife.bind()'s return value.

I wonder if the remover or unbind() method would be automatically called? How if yes? If no, there would be memory leak.

I believe we MUST EXPLICITLY call Unbinder.unbind(), where Unbinder instance is returned by ButterKnife.bind(), in Activities referencing any ListenerClass with a valid remover.

#906 #971

[JakeWharton]

You only need to call unbind() in fragments in onDestroyView because it can cause a leak if the fragment is re-used. For activities you do not need to call the method because the references form a cycle which will be correctly GC’d.

[MihailsKuzmins]

@JakeWharton thanks