JS交互点击WKWebView中的图片实现预览效果

• Swift 4.0
• WKWebView

1.注入js代码 （重点）

func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
  let jsGetImages =
    "function getImages(){" +
    "var objs = document.getElementsByTagName("img");" +
    "var imgScr = '';" +
    "for(var i=0;i

2.使用SKPhotoBrowser框架实现图片预览功能

func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
  let requestString = navigationAction.request.url?.absoluteString
  print(requestString!)
  if (requestString?.hasPrefix("image-preview"))!{
    let imgUrl = NSString.init(string: requestString!).substring(from: "image-preview:".count )
    let index = imgUrlArray.index(of: imgUrl)
    let browser = SKPhotoBrowser(photos: images)
    browser.initializePageIndex(index)
    present(browser, animated: true, completion: {})
  }
  decisionHandler(.allow) //一定要加上这句话 
}

总结
以上所述是小编给大家介绍的JS交互点击WKWebView中的图片实现预览效果，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对考高分网网站的支持！