Implementing floating app...where to start [closed]

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I would like to create a floating app - an app that floats/hovers over other apps. Something along the lines of what the good folks at Floating Apps have achieved. But i am lost as to where to begin with such an effort.

I understand the conventional way of creating an app but i am at a loss thinking about how to get started on creating a floating calculator.

Can anyone point me in the right direction or get me started? Appreciate your inputs. Thanks.

Answer 1

While I don't know how your particular example works, if you've been paying attention to various UI/UX experiences on Android you might have heard about Facebook Chat Heads which has a similar float over existing app feel.

You may want to start here for your investigation:

What APIs in Android is Facebook using to create Chat Heads?