iOS UITextViewDelegate方法
示例
响应编辑通知
textViewShouldBeginEditing(_:)
textViewDidBeginEditing(_:)
textViewShouldEndEditing(_:)
textViewDidEndEditing(_:)
响应文本更改
textView(_:shouldChangeTextIn:replacementText:)
textViewDidChange(_:)
响应URL
textView(_:UITextView,shouldInteractWithURL:NSURL,inRange:NSRange)->Bool