ios9中 UIStackView的使用

ios9中 UIStackView的使用

by 伍雪颖

UIStackView可以 垂直或水平排布多个subview,

本身主动为每个subview建立和加入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)