Report function tableview.
a scroll imageview to drag or double click to show detail info. 对图像可拖拽，双击，放大缩小图片
仿照京东地址选择器
actionSheet(下方弹出框) 模仿微信（wechat）
a special label can show special color word in the label. 一个label能展示关键字的特殊颜色，特殊字体
a demo of search bar and search display controller in storyboard
regular expressions for check username, password length,telephone, wechat pay account, alipay acc...
In no network situation, use the placeholder view to show no no net connect , this also has closu...
alertView dropdown animation with a little spring // 一个带从上面掉落动画的 AlertView （提示框）
Imitate the VSCode layout
