Is it possible to create an overlay button on GMaps? This overlay button should start another app.
Procedure: First I want to start GMaps, then the b4a micro program with the overlay button (this micro program consists only of the overlay button). When I press the overlay button another app should be started. I hope it is clear.
If I understand well you want to lauch the GoogleMaps program from your device and the start the B4A Program with the button ?
This you cannot do.
You can add a GoogleMap object in your program and add a button over it.
I want to start the original GMaps app, then my small program with the overlay button.
There are programs which run in the background and you can overlay only a widget or sth. similar in the foreground of another program which is active at the moment.
ups, that sounds complicated. You can try to make an transparent activity with a non transparent button. This on the top would be something similar like you described. But let's see, what the experts will say....
-> https://www.b4x.com/android/forum/threads/hiding-an-activity.14824/