I want to create an app that would display some text on screen independent of what app is running behind. Like in Settings--> Developers options --> show CPU usage. I am not understanding what should I search for this. Please guide me.
I want to create an app that would display some text on screen independent of what app is running behind. Like in Settings--> Developers options --> show CPU usage. I am not understanding what should I search for this. Please guide me.
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