I have seen how to draw a shape in Android, but what I want to know is how to rescale the shape when the user touches over the shape.
Imagine a square into a screen corner, so when you touch it, it grows until fitting the whole screen. I’d like to make that with a transition, animated, not instant.
Any idea of how to do that, or any known resource?
Android has built-in support for Animations. You can find many examples by searching the Web. This one is a good start.
In order to make your shapes touchable, you can implement them by overriding the View class (a nice example can be found here). Then you can use View.OnTouchListener.