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rmarinho merged 2 commits into from
Jul 10, 2026
Merged

Fix WebView SwipeView gestures on Android #36499

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c3a1450
Fix WebView SwipeView gestures on Android (#36154)
Copilot Jul 10, 2026
0087636
Fix Windows WebView SwipeView UI test
Copilot Jul 10, 2026
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126 changes: 126 additions & 0 deletions src/Controls/tests/TestCases.HostApp/Issues/Issue36154.cs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,126 @@
namespace Maui.Controls.Sample.Issues;

[Issue(IssueTracker.Github, 36154, "WebView inside SwipeView no longer responds to swipe gestures on Android", PlatformAffected.Android)]
public class Issue36154 : ContentPage
{
public Issue36154()
{
var directionLabel = new Label
{
AutomationId = "DirectionLabel",
Text = "Direction: — Offset: 0",
HorizontalOptions = LayoutOptions.Center,
Margin = new Thickness(4, 8),
FontSize = 13
};

var resultLabel = new Label
{
AutomationId = "ResultLabel",
Text = "Swipe result will appear here",
HorizontalOptions = LayoutOptions.Center,
Margin = new Thickness(4, 0, 4, 12),
FontSize = 13,
TextColor = Colors.Gray
};

var webView = new WebView
{
AutomationId = "TheWebView",
HorizontalOptions = LayoutOptions.Fill,
VerticalOptions = LayoutOptions.Fill,
// Long scrollable page so vertical scroll can be verified
Source = new HtmlWebViewSource
{
Html = """
<html>
<body style="font-family:sans-serif;padding:16px">
<h3>Issue 36154 – WebView scroll test</h3>
<p>Scroll down to verify WebView vertical scrolling works inside SwipeView.</p>
<p>Then swipe left/right to reveal swipe items.</p>
<p>At the top edge, swipe down to reveal TopItems.</p>
<p>At the bottom edge, swipe up to reveal BottomItems.</p>
Comment thread
kubaflo marked this conversation as resolved.
""" + string.Concat(Enumerable.Range(1, 40).Select(i =>
$"<p>Line {i}: Lorem ipsum dolor sit amet consectetur adipiscing elit.</p>"))
+ "</body></html>"
Comment on lines +39 to +45
}
};

var swipeView = new SwipeView
{
AutomationId = "TheSwipeView",
Threshold = 80,

LeftItems = new SwipeItems(new[]
{
new SwipeItem
{
AutomationId = "LeftItem",
Text = "◀ LEFT",
BackgroundColor = Colors.MediumSeaGreen,
Command = new Command(() =>
{
resultLabel.Text = "LEFT item invoked";
})
}
})
{ Mode = SwipeMode.Execute, SwipeBehaviorOnInvoked = SwipeBehaviorOnInvoked.Close },

RightItems = new SwipeItems(new[]
{
new SwipeItem
{
AutomationId = "RightItem",
Text = "RIGHT ▶",
BackgroundColor = Colors.CornflowerBlue,
Command = new Command(() =>
{
resultLabel.Text = "RIGHT invoked!";
})
}
})
{ Mode = SwipeMode.Execute, SwipeBehaviorOnInvoked = SwipeBehaviorOnInvoked.Close },

Content = webView
};

swipeView.SwipeStarted += (s, e) =>
{
directionLabel.Text = $"Direction: {e.SwipeDirection} Offset: 0";
};

swipeView.SwipeChanging += (s, e) =>
directionLabel.Text = $"Direction: {e.SwipeDirection} Offset: {e.Offset:F0}";

swipeView.SwipeEnded += (s, e) =>
{
directionLabel.Text = $"Direction: {e.SwipeDirection} Open: {e.IsOpen}";
};

Content = new Grid
{
RowDefinitions =
[
new RowDefinition { Height = GridLength.Auto },
new RowDefinition { Height = GridLength.Star },
new RowDefinition { Height = GridLength.Auto },
new RowDefinition { Height = GridLength.Auto },
],
Children =
{
new Label
{
Text = "Swipe on WebView · scroll mid-page · swipe at edges",
HorizontalOptions = LayoutOptions.Center,
Margin = new Thickness(8),
FontSize = 13,
FontAttributes = FontAttributes.Bold
}.Row(0),

swipeView.Row(1),
directionLabel.Row(2),
resultLabel.Row(3)
}
};
}
}
35 changes: 35 additions & 0 deletions src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue36154.cs
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@@ -0,0 +1,35 @@
using NUnit.Framework;
using UITest.Appium;
using UITest.Core;

namespace Microsoft.Maui.TestCases.Tests.Issues;

public class Issue36154 : _IssuesUITest
{
public Issue36154(TestDevice testDevice) : base(testDevice)
{
}

public override string Issue => "WebView inside SwipeView no longer responds to swipe gestures on Android";

// Verify that swiping left on the WebView reveals the Right swipe items
[Test]
[Category(UITestCategories.SwipeView)]
public void Issue36154SwipeViewShouldRevealItems()
{
#if WINDOWS
// WinUI cannot locate SwipeView through WebDriver, so use its WebView child for the gesture coordinates.
const string swipeTarget = "TheWebView";
#else
const string swipeTarget = "TheSwipeView";
#endif
var rect = App.WaitForElement(swipeTarget).GetRect();
var centerX = rect.X + rect.Width / 2;
var centerY = rect.Y + rect.Height / 2;

// Swipe left (finger moves left) → reveals RightItems
App.DragCoordinates(centerX, centerY, centerX - 200, centerY);

Assert.That(App.WaitForElement("ResultLabel").GetText(), Is.EqualTo("RIGHT invoked!"));
Comment on lines +30 to +33
}
}
16 changes: 16 additions & 0 deletions src/Core/src/Platform/Android/MauiSwipeView.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -133,6 +133,11 @@ bool ShouldInterceptScrollChildrenTouch(SwipeDirection swipeDirection)
if (_contentView is null || _initialPoint is null)
return false;

if (_contentView is AWebView contentWebView)
{
return ShouldInterceptWebViewTouch(contentWebView, swipeDirection);
}

var viewGroup = _contentView as ViewGroup;

if (viewGroup is not null)
Expand Down Expand Up @@ -166,6 +171,17 @@ bool ShouldInterceptScrollChildrenTouch(SwipeDirection swipeDirection)
return true;
}

// Determines whether the SwipeView should intercept touch events when the content is a WebView, based on the WebView's scroll position and the swipe direction.
static bool ShouldInterceptWebViewTouch(AWebView webView, SwipeDirection swipeDirection) =>
swipeDirection switch
Comment thread
kubaflo marked this conversation as resolved.
{
SwipeDirection.Right => !webView.CanScrollHorizontally(-1), // at left edge
SwipeDirection.Left => !webView.CanScrollHorizontally(1), // at right edge
SwipeDirection.Down => !webView.CanScrollVertically(-1), // at top
SwipeDirection.Up => !webView.CanScrollVertically(1), // at bottom
_ => true,
};
Comment on lines +174 to +183

static bool ShouldInterceptScrollChildrenTouch(ViewGroup scrollView, bool isHorizontal)
{
AView? scrollViewContent = scrollView.GetChildAt(0);
Expand Down
12 changes: 11 additions & 1 deletion src/Core/src/Platform/Android/MauiWebView.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@ public class MauiWebView : WebView, IWebViewDelegate

readonly WebViewHandler _handler;
readonly Rect _clipRect;
bool _hasSwipeViewParent;

public MauiWebView(WebViewHandler handler, Context context) : base(context)
{
Expand All @@ -37,6 +38,8 @@ protected override void OnAttachedToWindow()
// Re-evaluate ClipBounds when re-parented (e.g., wrapped in WrapperView for shadow)
UpdateClipBounds(Width, Height);

_hasSwipeViewParent = ((View)this).GetParentOfType<MauiSwipeView>() is not null;

if (RefreshViewWebViewScrollCapture.IsInsideMauiSwipeRefreshLayout(this))
{
RefreshViewWebViewScrollCapture.Attach(this);
Expand All @@ -55,6 +58,7 @@ protected override void OnDetachedFromWindow()
{
RefreshViewWebViewScrollCapture.Detach(this);
base.OnDetachedFromWindow();
_hasSwipeViewParent = false;
}

void UpdateClipBounds(int width, int height)
Expand Down Expand Up @@ -93,7 +97,13 @@ public override bool OnTouchEvent(MotionEvent? e)
{
case MotionEventActions.Down:
case MotionEventActions.Move:
Parent?.RequestDisallowInterceptTouchEvent(true);
// Do not request disallow intercept when inside a SwipeView — that would set
// FLAG_DISALLOW_INTERCEPT on the SwipeView and prevent it from detecting
// swipe gestures
if (!_hasSwipeViewParent)
{
Parent?.RequestDisallowInterceptTouchEvent(true);
}
break;

case MotionEventActions.Up:
Expand Down
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