How to set custom WebViewClient on Android handler

Question

I am working on brand new Maui app, and would like to know how I can use a custom WebViewClient on Android, using MAUI handlers.
I have tried the AppendToMapping, or PrependToMapping but couldn't get it working without fully overriding the handler.

Can somebody point me in the right direction wit a sample?

Answer 1

Hello @jw ,

You can follow the steps below:

Register the handler using the AddHandler method in the MauiProgram class

  builder.UseMauiApp<App>().ConfigureMauiHandlers(Handlers =>  
             {  
     #if __ANDROID__  
                Handlers.AddHandler(typeof(MyCustomWebView), typeof(MyCustomWebViewHandler));// MyCustomWebView should be your webview  
     #endif  
             });  

Override the CreatePlatformView method that renders the platform control in MyCustomWebViewHandler class, and you can call SetWebViewClient method to set the WebViewClient

  partial class MyCustomWebViewHandler: WebViewHandler  
     {  
         protected override Android.Webkit.WebView CreatePlatformView()  
         {  
             Android.Webkit.WebView customWebView =  new Android.Webkit.WebView(Android.App.Application.Context);  
             customWebView.SetWebViewClient(new MyCustomWebClient());//your WebViewClient   
            customWebView.SetWebChromeClient(new MyCustomWebChomeClient());// your WebChomeClient  
             return customWebView;  
         }  
     }  

For more details , refer to .NET MAUI control customization with handlers - .NET MAUI | Microsoft Learn and Porting Custom Renderers to Handlers in Wiki

Best Regards,
Wenyan Zhang

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