嗨,我在我的Xamarin Forms PCL项目中实现了一个混合WebView。我有一个html页面,我已经创建了一个mailto链接,但它不工作,点击它,它显示没有找到网页。
在uwp中,它要求打开应用程序。
杂交网络视图
public class HybridWebView : View
{
Action<string> action;
public static readonly BindableProperty UriProperty = BindableProperty.Create(
propertyName: "Uri",
returnType: typeof(string),
declaringType: typeof(HybridWebView),
defaultValue: default(string));
public string Uri
{
get { return (string)GetValue(UriProperty); }
set { SetValue(UriProperty, value); }
}
public void RegisterAction(Action<string> callback)
{
action = callback;
}
public void Cleanup()
{
action = null;
}
public void InvokeAction(string data)
{
if (action == null || data == null)
{
return;
}
action.Invoke(data);
}
}
机器人中的渲染器-
public class HybridWebViewRenderer : ViewRenderer<HybridWebView, Android.Webkit.WebView>
{
const string JavaScriptFunction = "function invokeCSharpAction(data){jsBridge.invokeAction(data);}";
const string downloadFunction = "function downloadbook(data){jsBridge.invokeDownloadAction(data);}";
protected override void OnElementChanged(ElementChangedEventArgs<HybridWebView> e)
{
base.OnElementChanged(e);
Android.Webkit.WebView.SetWebContentsDebuggingEnabled(true);
if (Control == null)
{
var webView = new Android.Webkit.WebView(Forms.Context);
webView.Settings.JavaScriptEnabled = true;
SetNativeControl(webView);
}
if (e.OldElement != null)
{
Control.RemoveJavascriptInterface("jsBridge");
var hybridWebView = e.OldElement as HybridWebView;
hybridWebView.Cleanup();
}
if (e.NewElement != null)
{
Control.AddJavascriptInterface(new JSBridge(this), "jsBridge");
Control.LoadUrl(string.Format("file:///android_asset/Content/{0}", Element.Uri));
//string url = System.IO.Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Personal), Element.Uri);
//Control.LoadUrl(string.Format("file://{0}", url));
Task.Run(() => {
Task.WaitAny(Task.Delay(2000));
InjectJS(JavaScriptFunction);
CallJS();
});
}
}
void InjectJS(string script)
{
if (Control != null)
{
Control.LoadUrl(string.Format("Javascript: {0}", script));
}
}
void CallJS()
{
if (Control != null)
{
try
{
}
catch (Exception ex)
{ }
}
}
}
最佳答案
您应该订阅OnNavigating
的WebView
事件并在那里处理mailto链接。
void OnNavigating(object sender, WebNavigatingEventArgs e)
{
if (e.Url.StartsWith ("mailto")) {
Device.OpenUri(new Uri(e.Url););
e.Cancel = true;
}
}
取消导航很重要,因为您将退出应用程序,并且不需要webview尝试进一步导航。
关于c# - Xamarin表单Hybridweb View mailto链接不起作用,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/42853465/