Android Question Show screen updates

[Mrphone]

Hi

I want to create a program that does something every time the screen is updated

Like Show screen updates in Developer options ? ??

Thanks in advance for answering?

 

[Erel]

It is not possible. Only the OS can do such things.

 

[JohnC]

As Erel says, only the OS can detect touches on ALL screens.

But, If you want to detect touches on ONLY the screens inside your own app, you might be able to have a transparent panel covering each activity page in your app, then do something (like display a circle) when a touch event is detected, but I don't know exactly what "something" you want to do with each touch.