OutputLiveCallbackRegistry

A lifecycle-aware registry of callbacks that correlates callbacks and its origins.

This is expected to be used with callbacks that receive no parameters and return a value.

It should respect the lifecycle of other app components, such as activities, fragments, or services. This awareness ensure the registered callbacks should be only invoked when appropriate.

You can register a callback paired with an object that implements the LifecycleOwner interface. This relationship allows the callback to be released when the state of the lifecycle changes to DESTROYED. This is especially useful for activities and fragments because they can safely register callbacks and not worry about leaks: the callback and lifecycle are expected to be instantly released when their lifecycles are destroyed.