fix: windowManager.addView crashes every time

[linear[bot]]

LUI-382 fix: windowManager.addView crashes every time

[luiisca]

so apparentely widgets do mount without issue, but composables just crash the app

[luiisca]

read a bit about what windows are and how the windowManager works:

https://stackoverflow.com/a/22442702/16441651

They show an example using old xml layouts, I guess it should work, but I'm trying to use composables.

[luiisca]

went in a bit of a rabbit hole reading android's documentation and source code. And I think the reason behind the crashing is because I'm passing the wrong context to ComposeView, I'm passing a Service class but I think it's expecting a View class. This could be confirmed by the [kinda broken] link this SO discussion points to: https://stackoverflow.com/questions/65755763/inputmethodservice-with-jetpack-compose-composeview-causes-composed-into-the. It basically says that ComposeView needs to be attached to a ViewTreeLifecycleOwner which is only implemented by ComponentActivity and others by default, none being Service. So the solution seems to be to implement those methods ComposeView is expecting.

[luiisca]

ok, I feel like I now understand better this "attached to ViewTreeLifecycleOwner statement". So apparentely Compose will look at the view is about to "render" for a LifecycleOwner (a class that manages the View), this LifecycleOwner is already "provided" by classes like ComponentActivity automatically but this is not the case for a Service, that's why we need to create our own custom class that extends LifecycleOwner and then bind or attach the View to it, so Compose could find it when looking on View. Not completely sure how this lookup process work, but I think this is enough.

https://stackoverflow.com/questions/72379865/jetpack-compose-recomposition-wont-trigger-when-using-custom-lifecycle-viewmod

[luiisca]

ok, i've implemented the fix. Now I bind a LifecycleOwner to the FloatView composable before passing it to the window manager

private fun composeFloatView(): View {

    val floatView = ComposeView(this).apply {

        this.setContent {

            FloatView()

        }

    }

    floatViewLifecycleOwner.attachToDecorView(floatView)

    return floatView

}