DFCircleActivityIndicator
Native, customizable and animated circular view to show when long activity is running, for iOS Apps. No more images needed. Just drag and drop this class, set color and style and you're ready to go with startAnimation.
当IOS的软件在载入或者干其他什么事情需要用户等待时，这个原生态、可定制、活动着的圆就显示出来了。不需要图片，将这个类拖入你的工程，设置下颜色和样式，执行 startAnimation 后就能看到效果了。
Appearance效果
Instalation安装
To install DFCircleActivityIndicator, just drag and drop the .h and .m files into your project folder. Import when you need it.
要使用 DFCircleActivityIndicator ，将.h .m文件拖到你的工程目录中，什么时候需要就引用吧。
Usage使用
It must need QuartzCore framework. May looks 'slow' or 'flicking' on iOS Simulator, but works fine on device, even on iPhone 4.
这个需要用到 QuartzCore 框架哦，也许在IOS模拟器中看起来会卡顿，但在设备上观察会很流畅，即使是在iPhone4上。
Development发展
You're welcome to make improvements.
欢迎你对源码做出改进。