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！