Android application

I did an android application that allow the user to learn the different flags of the world via a questionnary. Each question has 4 possibilities. If the user is right, then a message saying "Correct!" appear and the next question is asked. Else, it explains what was the right answer and ask another question. You can find its private policy there.

Here are some pictures from it:

fun-with-flags app picture 1 fun-with-flags app picture 2 fun-with-flags app picture 3 fun-with-flags app picture 4

You can find the code source here.