getContentHeight method
Gets the height of the HTML content.
Official Android API: https://developer.android.com/reference/android/webkit/WebView#getContentHeight()
Official iOS API: https://developer.apple.com/documentation/uikit/uiscrollview/1619399-contentsize
Implementation
Future<int?> getContentHeight() async {
Map<String, dynamic> args = <String, dynamic>{};
return await _channel.invokeMethod('getContentHeight', args);
}