iOS Question Webview JS

Erel said:

Example of handling JS confirm dialog:

B4X:

Sub Class_Globals
    Private Root As B4XView
    Private xui As XUI
    Private WebView1 As WebView
    Private WebViewDelegate As NativeObject
End Sub

Public Sub Initialize
   
End Sub

Private Sub B4XPage_Created (Root1 As B4XView)
    Root = Root1
    Root.LoadLayout("MainPage")
    WebViewDelegate = WebViewDelegate.Initialize("MyUIDelegate").RunMethod("new", Null)
    WebView1.As(NativeObject).SetField("UIDelegate", WebViewDelegate)
    WebView1.LoadUrl("https://www.b4x.com/maps.html")
   
End Sub

Private Sub WebView1_Confirm (Message As String, url As String)
    Msgbox2("Msg", url & " asking: " & CRLF & Message, "", Array ("Yes", "Cancel"))
    Wait For Msg_Click (ButtonText As String)
    WebViewDelegate.RunMethod("confirm:", Array(ButtonText = "Yes"))
End Sub

#if OBJC
@end
@interface MyUIDelegate :NSObject<WKUIDelegate>
@property (nonatomic, copy) void (^handler)(BOOL result);
@end
@implementation MyUIDelegate {
   
}
- (void)webView:(WKWebView *)webView runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(void))completionHandler {
   NSLog(@"test runJavaScriptAlertPanelWithMessage");
   completionHandler();
}

- (void)webView:(WKWebView *)webView runJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(BOOL result))completionHandler {
   NSLog(@"test runJavaScriptConfirmPanelWithMessage");
   self.handler = completionHandler;
   [B4IObjectWrapper raiseUIEvent:webView :@"_confirm::" :@[message, webView.URL.absoluteString]];
}
- (void) confirm:(BOOL)result {
    self.handler(result);
    self.handler = nil;
}

#End If

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Erel said:

This is not a confirmation dialog. The user can only click "ok".

You should see this message in the logs: NSLog(@"test runJavaScriptAlertPanelWithMessage");

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