언제쯤이면 UIScrollView를 쫄지 않고 쓸 수 있을까 ?
UIScrollView 안에 UIImageView 를 한개 넣을 거에요.
왜 넣을까요 굳이? Zoom 하려구요.
자 일단
let scrollView = UIScrollView.init()
//layout setup func
scrollView.translatesAutoresizingMaskIntoConstraints = false
let heightConstraint = NSLayoutConstraint.init(item: imageView,
attribute: .height,
relatedBy: .equal,
toItem: self.view,//View Controller의 view
attribute: .height,
multiplier: 1.0, constant: 0)
heightConstraint.priority = UILayoutPriority.init(rawValue: 1000)// 200으로 했는데 안먹혀서 강제로 1000줌.
view.addSubview(scrollView)
//view 에 Layout 추가
view.addConstraints([
scrollView.widthAnchor.constraint(equalTo: view.widthAnchor),
scrollView.heightAnchor.constraint(equalTo: view.safeAreaLayoutGuide.heightAnchor),
scrollView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor),
scrollView.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor),
scrollView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
scrollView.trailingAnchor.constraint(equalTo: view.trailingAnchor)
])
//scrollView에 imageView 추가
scrollView.addSubview(imageView)scrollView.addConstraints([
imageView.topAnchor.constraint(equalTo: scrollView.topAnchor),
imageView.bottomAnchor.constraint(equalTo: scrollView.bottomAnchor),
imageView.leadingAnchor.constraint(equalTo: scrollView.leadingAnchor),
imageView.trailingAnchor.constraint(equalTo: scrollView.trailingAnchor)])
view.addConstraints([
imageView.widthAnchor.constraint(equalTo: view.widthAnchor),
heightConstraint])
imageView.contentMode = .scaleAspectFit
끝!
imageView를 frame으로 해봤는데 잘 안됐다.(어떻게 잘 안됏냐면 오버사이즈? 가 됐었다... 내가 아직 view.frame, view.bounds, UIScreen.main.bounds의 크기를 모르나보다... 그럼 안되는디...)