A WebView in a Bottom Sheet does not scroll

[Urkman]

When I display a WebView in a Bottom Sheet, it is not possible to scroll the WebView. With a List it works fine...

[Tom3652]

Same problem here, but the WebView package seems to have some problems with gestures.
In PageView for example it only scrolls when the user triggers an action_up event, not on_drag

My point is that maybe some improvements should also be made in the WebView package, but it would be really nice to have it handled in the modal_bottom_sheet

[devtronic]

Solution: https://stackoverflow.com/questions/58694353/webview-without-height-inside-scroll-not-working#answer-58730573

        showCupertinoModalBottomSheet(
          expand: false,
          context: context,
          backgroundColor: Colors.transparent,
          builder: (context) => Container(
            height: mq.size.height * 0.9,
            child: WebView(
              allowsInlineMediaPlayback: true,
              initialUrl: urlString,
              javascriptMode: JavascriptMode.unrestricted,
              gestureRecognizers: Set()
                ..add(
                  Factory<VerticalDragGestureRecognizer>(
                    () => VerticalDragGestureRecognizer(),
                  ), 
                ),
            ),
          ),
        );

[vjamrich]

Solution: https://stackoverflow.com/questions/58694353/webview-without-height-inside-scroll-not-working#answer-58730573

        showCupertinoModalBottomSheet(
          expand: false,
          context: context,
          backgroundColor: Colors.transparent,
          builder: (context) => Container(
            height: mq.size.height * 0.9,
            child: WebView(
              allowsInlineMediaPlayback: true,
              initialUrl: urlString,
              javascriptMode: JavascriptMode.unrestricted,
              gestureRecognizers: Set()
                ..add(
                  Factory<VerticalDragGestureRecognizer>(
                    () => VerticalDragGestureRecognizer(),
                  ), 
                ),
            ),
          ),
        );

This method results in a strange behaviour:

• Fast scrolling input - the WebView widget will scroll
• Slow scrolling input - the Bottom Sheet modal will try to scroll (close)

Ideally, the scrolling input would always affect the WebView. With the only exception being when the webpage is at the top - in that case the input would close the modal.

[yareyaredesuyo]

高さ固定にしよう