[webview_flutter] Register the iOS platform view with the hit-test gesture blocking policy

packages/webview_flutter/webview_flutter_wkwebview/CHANGELOG.md

@@ -1,3 +1,9 @@
+## 3.26.1
+
+* Fixes web views on iOS becoming unresponsive to touches after the first
+  interaction by registering the platform view with the hit-test based gesture
+  blocking policy.
+
 ## 3.26.0
 
 * Adds new method for accessing a native `WKWebView` from a `FlutterPluginRegistrar`.

packages/webview_flutter/webview_flutter_wkwebview/darwin/Tests/FWFWebViewFlutterWKWebViewExternalAPITests.swift

@@ -84,6 +84,16 @@ import WebKit
         forIdentifier: 0, withPluginRegistrar: registrar)
       #expect(result == nil)
     }
+
+    @MainActor @Test func registersViewFactoryWithHitTestGesturePolicy() throws {
+      let registrar = TestFlutterPluginRegistrar()
+
+      WebViewFlutterPlugin.register(with: registrar)
+
+      #expect(
+        registrar.registeredGestureRecognizersBlockingPolicy
+          == FlutterPlatformViewGestureRecognizersBlockingPolicyDoNotBlockGesture)
+    }
   #endif
 }
 
@@ -128,6 +138,8 @@ class TestFlutterPluginRegistrar: NSObject, FlutterPluginRegistrar {
 
   #if os(iOS)
     var viewController: UIViewController?
+    var registeredGestureRecognizersBlockingPolicy:
+      FlutterPlatformViewGestureRecognizersBlockingPolicy?
 
     func messenger() -> FlutterBinaryMessenger {
       return TestBinaryMessenger()
@@ -145,6 +157,7 @@ class TestFlutterPluginRegistrar: NSObject, FlutterPluginRegistrar {
       _ factory: FlutterPlatformViewFactory, withId factoryId: String,
       gestureRecognizersBlockingPolicy: FlutterPlatformViewGestureRecognizersBlockingPolicy
     ) {
+      registeredGestureRecognizersBlockingPolicy = gestureRecognizersBlockingPolicy
     }
 
     func addSceneDelegate(_ delegate: any FlutterSceneLifeCycleDelegate) {

packages/webview_flutter/webview_flutter_wkwebview/darwin/webview_flutter_wkwebview/Sources/webview_flutter_wkwebview/WebViewFlutterPlugin.swift

@@ -34,7 +34,20 @@ public class WebViewFlutterPlugin: NSObject, FlutterPlugin {
       registrar.addSceneDelegate(plugin)
     #endif
 
-    registrar.register(viewFactory, withId: "plugins.flutter.io/webview")
+    #if os(iOS)
+      // The default `eager` policy blocks the platform view's gesture
+      // recognizers through Flutter's gesture arena, which is stateful. When
+      // that state is stranded the web view stops receiving touches for the
+      // rest of its lifetime. `doNotBlockGesture` derives the same decision
+      // from hit testing instead, so there is no state left to strand.
+      // See https://github.com/flutter/flutter/issues/175099.
+      registrar.register(
+        viewFactory, withId: "plugins.flutter.io/webview",
+        gestureRecognizersBlockingPolicy:
+          FlutterPlatformViewGestureRecognizersBlockingPolicyDoNotBlockGesture)
+    #else
+      registrar.register(viewFactory, withId: "plugins.flutter.io/webview")
+    #endif
     registrar.publish(plugin)
   }
 

packages/webview_flutter/webview_flutter_wkwebview/pubspec.yaml

@@ -2,7 +2,7 @@ name: webview_flutter_wkwebview
 description: A Flutter plugin that provides a WebView widget based on Apple's WKWebView control.
 repository: https://github.com/flutter/packages/tree/main/packages/webview_flutter/webview_flutter_wkwebview
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+webview%22
-version: 3.26.0
+version: 3.26.1
 
 environment:
   sdk: ^3.12.0