using System;
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using Foundation;
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using WebKit;
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using System.Collections.Generic;
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namespace Shared
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{
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/// <summary>
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/// WebView
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/// </summary>
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public class WebView:View
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{
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public Action<Dictionary<string,string>> JSToNativeAction;
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/// <summary>
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/// DidFinishAction
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/// </summary>
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public Action DidFinishAction;
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/// <summary>
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/// WKWebView
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/// </summary>
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private InnerWKWebView uiWebView
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{
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get
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{
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return this.uiView as InnerWKWebView;
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}
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set
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{
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this.uiView = value;
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}
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}
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/// <summary>
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/// WebView
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/// </summary>
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public WebView ()
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{
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// 配置网页的配置文件
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WKWebViewConfiguration configuration = new WKWebViewConfiguration { };
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|
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//默认布局，宽高为0的话会异常
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var mFrame = new CoreGraphics.CGRect(base.X, base.Y, 10, 10);
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this.uiWebView = new InnerWKWebView(this, mFrame, configuration) { };
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uiWebView.ScrollView.Bounces = false;
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//uiWebView.NavigationDelegate = new OnWKNavigationDelegate(this);
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configuration.UserContentController.AddScriptMessageHandler(this.uiWebView, "call");
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}
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/// <summary>
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/// 加载网页
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/// </summary>
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/// <param name="url"></param>
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public void LoadRequest(string url)
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{
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uiWebView.LoadRequest ( Foundation.NSUrlRequest.FromUrl ( Foundation.NSUrl .FromString(url)));
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}
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public void CallJS(string js)
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{
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uiWebView.EvaluateJavaScript(js,(result, error) => {
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System.Console.WriteLine(error + "");
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});
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}
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/// <summary>
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/// 加载本地HTML
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/// </summary>
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public void LoadFileUrl(string url)
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{
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var urls = url.Split("?");
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url = urls[0];
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Console.WriteLine(url + "xxxxxxxxxxxxx");
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string parameter = null;
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if (1 < urls.Length)
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{
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parameter = urls[1];
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}
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if (url.EndsWith(".html"))
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{
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url = url.Substring(0, url.Length - ".html".Length);
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}
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var filePath = NSBundle.MainBundle.PathForResource(url, "html");
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if (parameter == null)
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{
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var nsUrl = new NSUrl(filePath,false);
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uiWebView.LoadFileUrl(nsUrl, nsUrl);
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}
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else
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{
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var path = $"file://{filePath}?{parameter}"; //转成file路径，并且拼上参数
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//var newPath = NSUrl..Encode(path);
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NSUrlComponents nSUrl = new NSUrlComponents(path);
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var nsUrl = nSUrl.Url;//NSUrl.FromString(newPath.ToString());
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uiWebView.LoadFileUrl(nsUrl, nsUrl);
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}
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}
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/// <summary>
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/// 加载Html标签的富文本
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/// </summary>
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/// <param name="htmlStr"></param>
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public void LoadHTMLString(string htmlStr)
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{
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uiWebView.LoadHtmlString(htmlStr, null);
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}
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class InnerWKWebView : WKWebView, IWKScriptMessageHandler
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{
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[Weak] WebView webView;
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public InnerWKWebView(WebView webView, CoreGraphics.CGRect cGRect, WKWebViewConfiguration wKWebViewConfiguration) : base(cGRect, wKWebViewConfiguration)
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{
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this.webView = webView;
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}
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public void DidReceiveScriptMessage(WKUserContentController userContentController, WKScriptMessage message)
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{
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if (message.Name == "call")
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{
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if (message.Body == null)
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{
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return;
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}
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var nsDictionary = (NSDictionary)message.Body;
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if (nsDictionary == null)
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{
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return;
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}
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var dictionary = new Dictionary<string, string> { };
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foreach (var nsKey in nsDictionary.Keys)
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{
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var key = nsKey.ToString();
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dictionary.Add(key, nsDictionary.ValueForKey(new NSString(key))?.ToString());
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}
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webView?.JSToNativeAction?.Invoke(dictionary);
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}
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}
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}
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/// <summary>
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/// OnWKNavigationDelegate
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/// </summary>
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class OnWKNavigationDelegate : WKNavigationDelegate
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{
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[Weak] WebView _WebView;
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public OnWKNavigationDelegate(WebView view)
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{
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_WebView = view;
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}
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public override void DidFinishNavigation(WKWebView webView, WKNavigation navigation)
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{
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HDLUtils.WriteLine("WKWebView DidFinishNavigation");
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_WebView.DidFinishAction?.Invoke();
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}
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}
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}
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}
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