by 伍雪颖

UIStackView能够垂直或水平排布多个subview,

自己主动为每一个subview创建和加入Auto Layout constraints.

1.加入subview

let
logoImage:UIImageView
=
UIImageView(image:
UIImage(named:
"logo"))

logoImage.contentMode
= .ScaleAspectFit

self.stackView.addArrangedSubview(logoImage)

UIView.animateWithDuration(0.25,
animations: {

   
self.stackView.layoutIfNeeded()

})

2.删除subview

self.stackView.removeArrangedSubview(logoView)