protected override void OnElementChanged(ElementChangedEventArgs <HybridWebView> e)
{
base.OnElementChanged(e);
if (Control == null)
{
userController = new WKUserContentController();
var script = new WKUserScript(new NSString(JavaScriptFunction), WKUserScriptInjectionTime.AtDocumentEnd, true);
var api = new WKUserScript(new NSString(Element.APIJS), WKUserScriptInjectionTime.AtDocumentStart, true);
// var apiSetup = new WKUserScript(new NSString(APISetup), WKUserScriptInjectionTime.AtDocumentStart, true);
userController.AddUserScript(script);
userController.AddUserScript(api);
// userController.AddUserScript(apiSetup);
userController.AddScriptMessageHandler(this, "invokeAction");
var config = new WKWebViewConfiguration {
UserContentController = userController
};
WKJavascriptEvaluationResult handler = (NSObject result, NSError err) => {
if (err != null)
{
System.Console.WriteLine(err);
}
if (result != null)
{
System.Console.WriteLine(result);
}
};
var webView = new WKWebView(Frame, config);
// var js = (NSString)"SetupAPI()";
//webView.EvaluateJavaScript(js, null);
webView.Configuration.Preferences.SetValueForKey(NSObject.FromObject(true), new NSString("allowFileAccessFromFileURLs"));
webView.CustomUserAgent = "Mozilla/5.0 (iPhone; CPU iPhone OS 12_1_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0 Mobile/15E148 Safari/604.1";
webView.SizeToFit();
SetNativeControl(webView);
}
if (e.OldElement != null)
{
userController.RemoveAllUserScripts();
userController.RemoveScriptMessageHandler("invokeAction");
userController.RemoveScriptMessageHandler("Terminate");
userController.RemoveScriptMessageHandler("Commit");
var hybridWebView = e.OldElement as HybridWebView;
hybridWebView.Cleanup();
}
if (e.NewElement != null)
{
var docsDir = NSFileManager.DefaultManager.GetUrl(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomain.User, null, true, out var error);
var data = NSUrl.FromFilename(Path.Combine(docsDir.Path, Element.iOSPath));
var frame = NSUrl.FromFilename(Path.Combine(docsDir.Path, "Courses/index.htm"));
var htmlString = new NSString(Element.Source);
var content = NSUrl.FromFilename(Path.Combine(docsDir.Path, "Courses"));
var contentFrame = NSUrl.FromFilename(Path.Combine(docsDir.Path));
Control.LoadFileUrl(data, content);
}
}
public override void DidFinishNavigation(WKWebView webView, WKNavigation navigation)
{
WKJavascriptEvaluationResult handler = (NSObject result, NSError error) => {
if (error != null)
{
Console.WriteLine(result.ToString());
}
};
webView.EvaluateJavaScript(HtmlCode, handler);
}
/// <summary>
/// Send a message to javascript.
/// </summary>
/// <param name="message">The message to send.</param>
public void SendMessage(string message)
{
message = JsonConvert.ToString(message);
WKJavascriptEvaluationResult wKJavascriptEvaluationResult =
(o, e) =>
{
if (e != null)
{
Console.WriteLine(e.ToString());
}
};
this.webView.EvaluateJavaScript($"__dispatchMessageCallback({message})", wKJavascriptEvaluationResult);
}
public void DidFinishNavigation(WKWebView webView, WKNavigation navigation)
{
string parameter1 = "string parameter";
int parameter2 = 2;
WKJavascriptEvaluationResult handler = (NSObject results, NSError err) => {
if (err != null)
{
System.Console.WriteLine(err);
}
if (results != null)
{
System.Console.WriteLine(results);
}
};
string script = string.Format("javascript:myJavascriptFunction('{0}','{1}');", parameter1, parameter2);
WebViewObj.EvaluateJavaScript(script, handler);
}
public WKJavascriptEvaluationResult GetJavascriptEvaluationResultHandler()
{
if (_handler == null)
{
_handler = (NSObject result, NSError err) =>
{
if (err != null)
{
System.Console.WriteLine(err);
}
if (result != null)
{
System.Console.WriteLine(result);
}
};
}
return(_handler);
}
private void EvaluateJava()
{
WKJavascriptEvaluationResult handler = HandleWKJavascriptEvaluationResult;
wkWebView.EvaluateJavaScript((NSString)@"navigator.userAgent", handler);
}
