发表在我的独立网站http://kesenhoo.github.io/blog/2013/06/30/android-training-ui-creating-custom-views-lesson-0/ ，欢迎访问！
Android的framework有大量的Views用来与用户进行交互并显示不同种类的数据。但是有时候你的程序有个特殊的需求，而Android内置的views组件并不能实现。这一章节会演示如何创建你自己的views，并使得它们是robust与reusable的。
Dependencies and Prerequisites
Android 2.1 (API level 7) or higher
YOU should also read
- Custom Components
- Input Events
- Property Animation
- Hardware Acceleration
- Accessibility developer guide
Try it out
Download the sample
CustomView.zip
Lesson
(1)创建一个View类
Create a class that acts like a built-in view, with custom attributes and support from the ADT layout editor.
(2)自定义Drawing
Make your view visually distinctive using the Android graphics system.
(3)使得View是可交互的
Users expect a view to react smoothly and naturally to input gestures. This lesson discusses how to use gesture detection, physics, and animation to give your user interface a professional feel.
(4)优化View
No matter how beautiful your UI is, users won’t love it if it doesn’t run at a consistently high frame rate. Learn how to avoid common performance problems, and how to use hardware acceleration to make your custom drawings run faster.
学习自：http://developer.android.com/training/custom-views/index.html，请多指教，谢谢！
转载请注明出自http://kesenhoo.github.com，谢谢配合！