I would like to know if it's possible to overlay a 'return' button over other apps? I'm coding a carPC frontend and when the user clicks the GPS button it launches Google Navigation. What I would like is a semi-transparent button then that floats on top of the GPS software that when clicked swaps easily back to my frontend.
I'm used to coding in vb.net and that has a simple topmost call which sets a form over everything, so it's something like this that I need. I'm guessing it will be an Activity I will need to use with a simple xml layout file with a single ImageView and then add a listener to monitor all screen touches. Can you add a hook of some sort to achieve this?
Yes its possible, you could use a class that extend service that be at top of everything for sure using windowsManager and layaoutParams , just google Facebook floating chatHead , i would like to provide you with example code but im away from my pc.