CODEWITHSUNDEEP
androidwebviewxamarin.formsjavascript-injection
MrCodeWeaver
MrCodeWeaver

Reputation: 435

Javascript Injection with Xamarin forms WebView

I want to change the value of an element inside a Xamarin forms WebView

I created a new project and added a WebView page that loads https://www.google.com/
I have used .Eval

m_GoogleWebView.Eval("alert('coolness!');");

This alerts fine for me. However if I try to access the dom at all, it just replaces the WebView with the text 'test text'

m_GoogleWebView.Eval("document.getElementById('lst-ib').value='test text';");

How should I manipulate elements from Xamarin Forms?

Upvotes: 3

Views: 2041

Answers (1)

Adam
Adam

Reputation: 16199

This is an issue with any WebView on Android after 4.1.

What you need to do, is assign your script to a variable like this

m_GoogleWebView.Eval("var x = document.getElementById('lst-ib').value='test text';");

This still runs the script but now just assigns the result to the variable instead of the DOM.

Upvotes: 7

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