图片瀑布流显示，在iOS5.0上完整通过，支持拖拽加载，图片类可以自定义扩充-Picture waterfall flow iOS5.0 on integrity through support drag and drop the load, the Image class can customize to expand

对于iOS地图工具拖放，精选ios编程学习源码，很好的参考资料。-For the iOS map tool, drag and drop, selection of learning IOS programming source code, a good reference.