Show icon while app is in background. Android

Question

My goal is to create an application that even if it is in background. to be more clear I show you some examples of what I would get. Is it possible to do.

Answer 1

You can add view using window manager addView method like the way facebook chathead has been implemented. Please refer to link :what-apis-in-android-is-facebook-using-to-create-chat-heads