[iOS] 小知识 <一>

• 偏好设置调式技巧

  
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• 布局 debug
  https://developer.apple.com/videos/play/wwdc2016-236/?time=1571 …
  

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• lldb

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• 文本长度适配 黑科技

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• 沙盒文件查看技巧

 if you set LSSupportsOpeningDocumentsInPlace=YES and UIFileSharingEnabled=YES in your Info.​plist, you can inspect your app’s Documents directory in the Files.​app. Often useful for debugging. (We have a script to only set these for dev builds.) 

• UIScrollView 中的 UIButton 的响应取消

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• 检测 text field 用户停止输入

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