最近，我听说过的9片图像。我知道它的9瓷砖和可拉伸。我想多了解一下。

I recently heard about 9-patch images. I know its 9 tiled and is stretchable. I'd like to know more about it.

如何创建一个9片图像？

How can I create a 9-patch image?

有没有什么工具？我可以从AndroidSDK或code创建它？

Is there any tool? Can I create it from AndroidSDK or code?

9修补过正规PNG的主要优点？

Main Advantages of 9-patch over regular png?

（它是拉伸动态/自动根据画面？）

(is it stretchable dynamically/ automatically according to screen?)

推荐答案

今天，我发现了9片图像。在其他的答案链接到的文件就可以了，我想，但他们真正缺乏的例子。 这个小教程有在最后的回答你的问题的第二部分，一些伟大的例子，解释了如何定标工作 - 不只是按钮 - 而且帧。这九个补丁可以指定非连续的区域规模。

Today I discovered nine patch images. The documentation linked to in the other answers is ok I suppose, but they really lack in examples. This little tutorial has some great examples at the end that answer the second part of your question, explaining how the scaling works - not just for buttons - but also frames. The nine patch can specify non-contiguous areas to scale.

只是为了充实的回答你的问题，该SDK附带了​​draw9patch（Tools文件夹中），这是一个简单的编辑器的第一部分。 这里是另一个下载其中一个是好的，它有一个简单而巧妙的默认图像。

Just to flesh out the the answers to the first part of your question, the SDK ships with "draw9patch" (in the tools folder) which is a simple editor. Here is another downloadable one which is good, and it has a simple but clever default image.