Android has a ScaleGestureDetector since API level 8 (Android 2.2). From this point on the first Android devices with multitouch screens appeared. This was great, and the ScaleGestureDetector too ofcourse.
What’s a mistery to me however, is why this is the only multitouch gesture detector that is in the API! Why isn’t there something like a RotateGestureDetector to find out rotations between two (or more) fingers… Is it one of the issues in the patent war between Apple and Google? I don’t know, but I want to be able to use it anyway… so I built this small extendable framework and I’ll explain in this article how you can use it in your Android apps! Now hope I won’t get sued for building the obvious ! Read More