[Android] No possible to handle JavaScript addListener event on native side

I’m looking this code: https://github.com/facebook/react-native/blob/master/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/EventDispatcher.java#L144

Correct me if I’m wrong but there is not clean solution how to handle JavaScript call to addListener("event") method from NativeEventEmitter.js on native - Java side.

If I have on native side Java listeners it’s need to add/remove them according to add/remove on JavaScript side.

[sytolk]

Yes I can call native method like @ReactMethod eventListeningStartedOnJS() but I don’t think this is cleanest solution. For iOS we can extend RCTEventEmitter and handle this:

/// This method will be called when the first event listener is added.
- (void)startObserving {}

/// This method will be called when the last event listener is removed.
- (void)stopObserving {}

Can we have the same for Android?

[hramos]

Hi there! This issue is being closed because it has been inactive for a while. Maybe the issue has been fixed in a recent release, or perhaps it is not affecting a lot of people. Either way, we’re automatically closing issues after a period of inactivity. Please do not take it personally!

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