问题
How do I build a token text field like that of the iOS 8 Messages app that allows you to tokenize one or more words so that you can select, copy, and cut one or more of them at a time?
Note: I've seen open source projects like this, but they work the old way, which only allows one token to be selected at a time.
来源：https://stackoverflow.com/questions/27000943/ios-8-messages-to-token-field