如何在iOS应用程序中将.svg url显示为图像

我从服务器获取.svgurl。 我怎样才能在我的应用程序中显示它的形象。 我试图在UIWebView中显示它，但我无法调整内容图像的大小。 我正在使用这个代码

let request: NSURLRequest = NSURLRequest(url: URL(string: "https://upload.wikimedia.org/wikipedia/en/c/c3/Flag_of_France.svg")!) webView.scalesPageToFit = true webView.contentMode = .scaleAspectFit webView.loadRequest(request as URLRequest) 

我的问题是什么

Answer 1

解决方法是纠正网页视图的滚动视图缩放属性，以适应其界限。

http://yberdnikov.github.io/2014/06/18/uiwebview-and-svg-images-scaling/

所以迅速，你会做这样的事情：

 import UIKit // make sure to include the UIWebViewDelegate protocol class ViewController: UIViewController, UIWebViewDelegate { @IBOutlet var webView : UIWebView? override func viewDidLoad() { super.viewDidLoad() let request: NSURLRequest = NSURLRequest(url: URL(string: "https://upload.wikimedia.org/wikipedia/en/c/c3/Flag_of_France.svg")!) // don't forget to set the webView's delegate to self webView?.delegate = self // disable scrolling webView?.scrollView.isScrollEnabled = false webView?.scalesPageToFit = true webView?.contentMode = .scaleAspectFit webView?.loadRequest(request as URLRequest) // set webView's background color to clear, sometimes a black line appears at the bottom since the svg doesn't cover the entire view. webView?.backgroundColor = UIColor.clear } // function from delegate protocol func webViewDidFinishLoad(_ webView: UIWebView) { let contentSize = webView.scrollView.contentSize let webViewSize = webView.bounds.size let scaleFactor = webViewSize.width / contentSize.width // scale the svg appropriately webView.scrollView.minimumZoomScale = scaleFactor webView.scrollView.maximumZoomScale = scaleFactor webView.scrollView.zoomScale = scaleFactor } }