hey guys, I cloned official jetpack compose sample from github. it lacks back press functional and I want to add it by myself. is there any recommended ways that can I use?

Hi Bacho, if you look at already closed issues and pull requests, someone contributed that, but it was not accepted. We know the functionality is missing, but we didn't include it because it would take focus away from the simplicity of the example. If you are curious how to implement that, I suggest you look at the code in that pull request

This one? https://github.com/android/compose-samples/pull/22/files

Correct, that one