Flexible iPhone button

Is there a way 开发者_如何转开发to create a flexible iPhone button from a single graphic, like Android does with 9-patch drawables?

For example, would it be possible to use this graphic

to create a wider button?

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Yes. Load your image into a UIImage, then use stretchableImageWithLeftCapWidth:topCapHeight: with appropriate parameters to build a copy of the image with hints about the proper end caps. You can then assign this new image to the button.

See UIImage Class Reference.

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Yes, look into the UIImage method -stretchableImageWithLeftCapWidth:topCapHeight: