Code an app that does the following:

There is one button in the middle of the screen. The button color is green and its text says 0. When the user clicks on the button 0, we go to a second activity that is red and has one button in the middle of the screen; its text says BACK. When the user clicks on that button, we go back to the first activity; the button of that activity now says 1; every time we come back to the first activity from the second activity, the text inside the button is incremented by 1.

This needs to be completed in TWO DIFFERENT activities not one.