getScrollY method
Returns the scrolled top position of the current WebView.
Official Android API: https://developer.android.com/reference/android/view/View#getScrollY()
Official iOS API: https://developer.apple.com/documentation/uikit/uiscrollview/1619404-contentoffset
Implementation
Future<int?> getScrollY() async {
Map<String, dynamic> args = <String, dynamic>{};
return await _channel.invokeMethod('getScrollY', args);
}