Xamarin Forms WebView doesn't work for my specific URL

Question

I have an iOS app (and Android, which works fine) where I use a WebView to load a specific URL.

It works if I use "https://google.com" but not if I use the required one which is

https://sandbox.nuapay.com/tpp-ui/redirect?userInterfacePaymentId=1234567890  

I have tried adding various settings for NSAppTransportSecurity but I can't find a clear explanation of what the options are or what they specifically do.

I tried this, but it didn't seem to help:

 <key>NSAppTransportSecurity</key>  

<dict>
<key>NSExceptionDomains</key>
<dict>
<key>nuapay.com</key>
<dict>
<key>NSIncludesSubdomains</key>
<true />
<key>NSTemporaryExceptionAllowsInsecureHTTPLoads</key>
<true />
<key>NSTemporaryExceptionMinimumTLSVersion</key>
<string>TLSv1.2</string>
</dict>
</dict>
</dict>

Is there a way, when debugging, to see what the problem is?

Edit:

I added a handler for WebView.Navigated and the Status is "Success", so it seems to be a problem with the content just not showing in WebView.

Edit 2;

OK, so I added the following to the WebView definition:

                         WidthRequest="500"
                         HeightRequest="1000"
                         MinimumWidthRequest="1000"
                         MinimumHeightRequest="1000"
                         HorizontalOptions="FillAndExpand"
                         VerticalOptions="FillAndExpand"

And now I can see the content ... however the WebView is now way too big, so I can only see the edge. How do I make the WebView size itself to the full space available in the App - and make the content size itself to the size of the WebView?!

Answer 1

Hello,

Welcome to our Microsoft Q&A platform!

This is App Transport Security issue , just add the following line into Info.plist and try again.

<key>NSAppTransportSecurity</key>  
<dict>  
    <key>NSAllowsArbitraryLoads</key>  
    <true/>  
</dict>  

Best Regards,

Jessie Zhang

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Answer 2

I will try myself and give a solution to you.