Swift 2.0 constraintsWithVisualFormat

Question

I have strange problem with AutoLayout in Swift 2.0

self.webView = WKWebView()
self.view.addSubview(self.webView!)

var viewBindingsDict: NSMutableDictionary = N         


        

Answer 1

You should change your viewBindigsDict to

var viewBindingsDict = [String: AnyObject]()
viewBindingsDict["webView"] = webView

as suggested in the comments, and also in the format options, you cannot use 0, instead:

view.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|[webView]|", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: viewBindingsDict))

or more simplier as @MartinR suggested:

view.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|[webView]|", options: [], metrics: nil, views: viewBindingsDict))