How to obtain a LifecycleRegistry from a Component to gain control over its lifecycle?

[YektaDev]

Hi. I wonder if it's possible to gain control over a component's lifecycle by accessing it's LifecycleRegistry. I noticed once a component is created, I can only observe it's events, not trigger them manually (assuming I didn't directly receive a LifecycleRegistry). Is this possible?

[arkivanov]

Components can't control their lifecycle - that's the parent's responsibility. On the parent's side, that depends on how child components are created.

If you are using childContext, then you can pass LifecycleRegistry there for manual control. Please also mind the pending API change - #202.

If you are using childStack, then there is no direct API of controlling the lifecycle, and it's advised not to interfere with it. But if you really need to, you can try the following:

val stackLifecycle = LifecycleRegistry()
val childStack = childContext(key = "stack", lifecycle = stackLifecycle).childStack(...)

stackLifecycle.resume()
stackLifecycle.stop()
// Never destroy the lifecycle manually!

[YektaDev]

Oh that's right, the parent should be responsible for it, which is the very definition of connections between parent and children in the BLoC tree. Your response answers the question in full details. Thanks!