Swift 4中的iOS UIKit：将UIAlertController设置为密码格式

预习

资源

项目

https://github.com/calmone/iOS-UIKit-component

参考

• UIAlertController
  https://developer.apple.com/reference/uikit/uialertcontroller
• UIAlertAction
  https://developer.apple.com/reference/uikit/uialertaction
• UITextInputTraits协议
  https://developer.apple.com/reference/uikit/uitextinputtraits

快乐编码😄