Iphone Speech Bubble

It would be great if anyone could provide a tutorial or best approach to create a dynamic speech bubble in iphone. Here is the link of an application that already has a dynamic speech bubble built in - http://itunes.apple.com/us/app/bubble-up-free/id364054415?mt=8 . Since I am starting to develop applications in xcode I am not sure whether to 开发者_开发技巧approach this using quartz 2d or open GL etc.

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http://www.uinnoblog.com/sms-bubble-ui-in-iphone-apps.html

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The previous approach is not really the good one where you can use only one image and use the advantage of the stretchableImageWithLeftCapWidth / topCapHeight according with a setAutoresizingMask:UIViewAutoresizingFlexibleLeftMargin of an UIImage allowing to stretch an image by its width and/or height without stretching all angles...

In that case, your speech bubble image will be smaller, you'll need only one (instead of 9) AND your code will be really smaller...

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Here is good cocoa UI Component on GitHub: https://github.com/AlexBarinov/UIBubbleTableView