Fixed for the time being, error of "umake android" on Ubuntu 16.04: A default framework for category Android was requested where there is none

Android Studio 2.0 on Ubuntu 16.04 Refer to the last post " Error in installing Android Studio on Ubuntu 16.04 using umake ",...

Basic onClickListener

It's a very basic example to implement onClickListener for Button: - Button A, define onClickListener as anonymous class. - Button...

Implement pinch-to-zoom with ScaleGestureDetector

Last post show how to implement ScaleGestureDetector, this post show how to implement pinch-to-zoom on ImageView with ScaleGestureDetect...