我在Swift2.0中遇到AutoLayout的奇怪问题self.webView=WKWebView()self.view.addSubview(self.webView!)varviewBindingsDict:NSMutableDictionary=NSMutableDictionary()viewBindingsDict.setValue(self.webView,forKey:"webView")self.view.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|[webView]|",opti

我在Swift2.0中遇到AutoLayout的奇怪问题self.webView=WKWebView()self.view.addSubview(self.webView!)varviewBindingsDict:NSMutableDictionary=NSMutableDictionary()viewBindingsDict.setValue(self.webView,forKey:"webView")self.view.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|[webView]|",opti