iOS Question WKWebView show Javascript alert()

[nobbi59]

Im trying to show an alert(); message in WKWebView.

On stackoverflow i found this answer saying that the WebView is missing a "Delegate".

But I don't know how to implement the solution with B4i. Maybe someone has already fixed this issue with B4i or knows enough about ObjC to fix it.

 

[JanPRO]

Hi,
B4i only sets the navigation delegate of the Webview, so it's safe to set the UIDelegate and use the ui delegate methods with inline Objc code:

Sub SetUIDelegate (W As WKWebView)
    Dim NaObj As NativeObject = W
    NaObj.SetField("UIDelegate",Me)
End Sub

#If Objc
- (void)webView:(WKWebView *)webView runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(void))completionHandler
{
    UIAlertController *alertController = [UIAlertController alertControllerWithTitle:message
                                                                             message:nil
                                                                      preferredStyle:UIAlertControllerStyleAlert];
    [alertController addAction:[UIAlertAction actionWithTitle:@"OK"
                                                        style:UIAlertActionStyleCancel
                                                      handler:^(UIAlertAction *action) {
                                                          completionHandler();
                                                      }]];
                                                      
    [__page1.object presentViewController:alertController animated:YES completion:^{}];
}
#End If

Jan

 

[JohnC]

Do you have a B4xpages version of your code?