[webview_flutter] Support disabling overscroll

Hi,
By default, WebView scrolling is enabled on iOS
But in some cases I want to disable it

like this

_webView.scrollView.alwaysBounceVertical = NO;
_webView.scrollView.bounces = NO;

can it add a paramter on WebView class to control?

....
onWebViewCreated: (WebViewController _controller){
            controller = _controller;
          },
onPageFinished: (String url){
              controller?.evaluateJavascript('document.body.style.overflow = \'hidden\';');
          },
....

Looks there is a PR for this #1977

Trying above workaround freezed webview scrolling

This would be good to add to android as well. Though I am looking to specifically disable overscrolling on both platforms, not disabling scroll altogether.

Retitling to be platform-generic. (It looks like the Android version is setOverScrollMode.)

not disabling scroll altogether

This issue was about disabling overscroll, not scroll, given the code shown in the original post. It looks like that was a typo in the feature request.

Looking into the feature a little more. It looks like Android supports 3 modes:

Valid over-scroll modes are OVER_SCROLL_ALWAYS, OVER_SCROLL_IF_CONTENT_SCROLLS (allow over-scrolling only if the view content is larger than the container), or OVER_SCROLL_NEVER.

And iOS can create similar behavior as each mode by setting a specific combination of:

var bounces: Bool
A Boolean value that controls whether the scroll view bounces past the edge of content and back again.
var bouncesHorizontally: Bool
A Boolean value that determines whether the scroll view bounces when it reaches the ends of its horizontal axis.
var bouncesVertically: Bool
A Boolean value that determines whether the scroll view bounces when it reaches the ends of its vertical axis.
var alwaysBounceVertical: Bool
A Boolean value that determines whether bouncing always occurs when vertical scrolling reaches the end of the content.
var alwaysBounceHorizontal: Bool
A Boolean value that determines whether bouncing always occurs when horizontal scrolling reaches the end of the content view.

My idea would be to add a setOverScrollMode as the platform agnostic feature and if people want more specific axis control on iOS, it can be added as part of the iOS implementaiton.

[webview_flutter_platform_interface] Adds method to set overscroll mo…

[webview_flutter_android][webview_flutter_wkwebview] Adds platform im…

[webview_flutter] Adds support to control overscrolling (#8451)

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.

[webview_flutter] Adds support to control overscrolling (#8451)

[webview_flutter] Adds support to control overscrolling (flutter#8451)

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[webview_flutter] Support disabling overscroll #57090

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[webview_flutter] Support disabling overscroll #57090

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0x1af2aec8f957 commented on May 13, 2020

TahaTesser commented on May 13, 2020

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