Adding custom button on top of the webview

[EmilGlz]

Hi, I tried to add close button on top of the webview. As I cannot use unity UI canvas objects on top of the webview, I tried editing js code this way:

var buttonSize = 0.417f;
_webViewObject.EvaluateJS($@"
(function() {{
var button = document.createElement('button');
button.style.position = 'fixed';
button.style.left = '{buttonSize / 2f}in';
button.style.top = '{8}px';
button.style.zIndex = 2147483647;
button.style.width = '{buttonSize}in';
button.style.height = '{buttonSize}in';
button.style.backgroundColor = 'transparent';
button.style.color = '#413e3e';
button.style.border = 'none';
button.style.borderRadius = '50%';
button.style.fontSize = '24px';
button.style.cursor = 'pointer';
button.style.display = 'flex';
button.style.alignItems = 'center';
button.style.justifyContent = 'center';
button.style.textAlign = 'center';

  var img = document.createElement('img');
  img.src = 'https://fonts.gstatic.com/s/i/materialiconsoutlined/close/v1/24px.svg';
  img.style.filter = 'invert(100%) sepia(100%) saturate(0%) hue-rotate(0deg) brightness(0%) contrast(100%)';
  img.style.width = '100%';
  img.style.height = '100%';
  img.style.objectFit = 'cover';
  img.style.borderRadius = '50%';
  img.style.backgroundColor = 'transparent';
  img.style.color = '#413e3e';
  button.appendChild(img);

  button.onclick = function() {{
    {onClickFunction};
  }};
  document.body.appendChild(button);
}})()");

This function is called when the webview is loaded(ld). In Android it works fine, I see the close button with the correct icon. But in IOS devices, the close button does not even show. So what can affect to it in IOS devices? And maybe there are better ways to add custom button on top of the webview?

[KojiNakamaru]

You can see the image if you remove/comment out the following part.

  img.style.width = '100%';
  img.style.height = '100%';

Also, if you build your app with Development Build, you can debug WKWebView from Safari on Mac.

https://developer.apple.com/safari/tools/