覆盖服务中的主页按钮和后退按钮-Android

Question

I need to detect HomeButton event in Service. Not in Activity.

I am making an app which will make overlay on any other App. Like additional menu which is always on top of the screen. In some specific events I need to override pressing home button, menu button, back button, volume button also power button.

I believe that this must be done in Service, since all other Apps must run normal. So the events must be handled in Service not in Activity.

It is possible: http://www.kidscrape.com

Answer 1

You might want to find a way how to communicate from the Activity to the Service (and conversely). The easiest would be to use EventBus , either on of these two:

1. http://square.github.io/otto/
2. https://github.com/greenrobot/EventBus

So ultimately you just fire an event from Activity#onBackPressed() and catch it in the Service .