https://developer.apple.com/library/archive/documentation/UserExperience/Conceptual/AutolayoutPG/AutoLayoutWithoutConstraints.html#//apple_ref/doc/uid/TP40010853-CH8-SW1

Getting Started

Auto Layout Without Constraints

properties속성

• axis: (UIStackView only) 스택뷰가 가로방향인지 세로방향인지
• orientation: (NSStackView only) 스택뷰의 방향이 가로인지 세로인지
• distributio: defines the layout of the views along the axis. (UIStackView.Distribution) 사이즈
• alignmen: defines the layout of the views perpendicular to the stack view’s axis. (UIStackView.Alignment) 위치
• spacing: defines the space between adjacent views.
  To use a stack view, in Interface Builder drag either a vertical or horizontal stack view onto the canvas. Then drag out the content and drop it into the stack. (CGFloat)

https://developer.apple.com/documentation/uikit/uistackview/distribution

UIStackView.Distribution

• fill: hugging priority가 낮으면 늘어난다
  
• fillEqually: 동일한
  
• fillProportionally: based on their intrinsic content size 원래 비율대로
  
• equalSpacing: fill에서 동일한 공간만큼 떨어진다
  
• equalCentering: center-to-center spacing
  

https://developer.apple.com/documentation/uikit/uistackview/alignment

UIStackView.Alignment

• fill
  
• leading
  
• top
  
• firstBaseline: 텍스트의 첫째줄 베이스라인
  
• center
  
• trailing
  
• bottom
  
• lastBaseline
  

Auto Layout Cookbook

Stack Views

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