(Android UI Basic Tutorial is a basic introduction book of Android user interface design. The book starts with the most basic technical concepts, discusses in depth various technologies of UI design, and covers all the contents of creating UI for using programs. This book will not only inform readers of the best way to create flexible layouts, but also help developers optimize existing UI interfaces, so that their use and operation become more popular and have the best functions. After learning this book, readers can create a successful UI for Android.)