从UIWebView转移到WKWebView,我不知道如何使使用WKWebView上的loadHTMLString函数加载的超文本标记语言大小适合视图边界。我现在获得要加载的html,但它离开了我视图的右侧和底部。如何缩放它以适合我的视图边界?
发布于 2016-12-18 12:50:08
首先,在StoryBoard中创建一个容器视图,在该视图下,您将把WKWebView添加为子视图
@IBOutlet var container: UIView!
然后导入WebKit并对其进行初始化,然后添加为容器的子视图。为了保留这个界限,你必须根据它的父视图给它一个约束值。我是这样做的:
let webView = WKWebView(frame: .zero)
container.addSubview(webView)
webView.translatesAutoresizingMaskIntoConstraints = false
let height = NSLayoutConstraint(item: webView, attribute: .height, relatedBy: .equal, toItem: container, attribute: .height, multiplier: 1, constant: 0)
let width = NSLayoutConstraint(item: webView, attribute: .width, relatedBy: .equal, toItem: container, attribute: .width, multiplier: 1, constant: 0)
let leftConstraint = NSLayoutConstraint(item: webView, attribute: .leftMargin, relatedBy: .equal, toItem: container, attribute: .leftMargin, multiplier: 1, constant: 0)
let rightConstraint = NSLayoutConstraint(item: webView, attribute: .rightMargin, relatedBy: .equal, toItem: container, attribute: .rightMargin, multiplier: 1, constant: 0)
let bottomContraint = NSLayoutConstraint(item: webView, attribute: .bottomMargin, relatedBy: .equal, toItem: container, attribute: .bottomMargin, multiplier: 1, constant: 0)
container.addConstraints([height, width, leftConstraint, rightConstraint, bottomContraint])
let myURL = URL(string: "")
let myRequest = URLRequest(url: myURL!)
webView.load(myRequest)
添加所需的url,您就完成了。
https://stackoverflow.com/questions/35568868
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