我试图在ViewController内部的paging-scrollView中添加一个视图,并且我遇到了很多自动布局问题(所有这些代码都是编程的,非故事板)。
第一组约束正常工作,但第二组(sv
和firstView
)导致以下错误:libc++abi.dylib: terminating with uncaught exception of type NSException
对此问题的任何帮助将不胜感激,代码如下:
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = .whiteColor()
sv.backgroundColor = .redColor()
view.addSubview(sv)
sv.translatesAutoresizingMaskIntoConstraints = false
view.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|[sv]|", options: .DirectionLeadingToTrailing, metrics: nil, views: ["sv": sv]))
view.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|[sv]|", options: .DirectionLeadingToTrailing, metrics: nil, views: ["sv": sv]))
sv.pagingEnabled = true
let firstView = UIView()
firstView.backgroundColor = .greenColor()
sv.addSubview(firstView)
firstView.translatesAutoresizingMaskIntoConstraints = false
sv.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|[f]|", options: .DirectionLeadingToTrailing, metrics: nil, views: ["fv": firstView]))
sv.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|[fv]|", options: .DirectionLeadingToTrailing, metrics: nil, views: ["fv": firstView]))
}
答案 0 :(得分:1)
正如@dan指出的那样,视觉格式中的字符串中存在拼写错误。如果有人遇到类似的问题,我会留下这篇文章。外卖:
带有自动布局的 terminating with uncaught exception of type NSException
可能是由可视字符串中的拼写错误引起的。