Reverts "Use live region in error text input decorator for Android (#165531)" (#168848)

<!-- start_original_pr_link -->
Reverts: flutter/flutter#165531
<!-- end_original_pr_link -->
<!-- start_initiating_author -->
Initiated by: matanlurey
<!-- end_initiating_author -->
<!-- start_revert_reason -->
Reason for reverting: Breaks google client tests
<!-- end_revert_reason -->
<!-- start_original_pr_author -->
Original PR Author: ash2moon
<!-- end_original_pr_author -->

<!-- start_reviewers -->
Reviewed By: {chunhtai, reidbaker, hannah-hyj}
<!-- end_reviewers -->

<!-- start_revert_body -->
This change reverts the following previous change:
Resolves partly https://github.com/flutter/flutter/issues/165510


**Context:** This issue originates from
https://github.com/flutter/flutter/issues/99715, where it was reported
that `liveRegion` alone was insufficient for announcing form validation
errors. While `liveRegion` announces the first error encountered,
subsequent submissions with the same error message on Android would not
trigger a re-announcement.

**Original Solution:** Pull request
https://github.com/flutter/flutter/pull/123373 addressed this by
implementing the `announce` event to ensure error messages were
consistently announced, even for repeated submissions.

**Native Android Behavior (Jetpack Compose):** In native Android
development using Jetpack Compose, setting the `isError` property of a
`TextField` to `true` triggers Talkback to announce "Error invalid
input." This announcement occurs *only* on the initial change to the
error state. Subsequent errors, even if the `isError` property remains
`true`, are not re-announced. This behavior closely mirrors the
functionality of `liveRegion`, with the key difference being that
`liveRegion` also announces the specific error text, in addition to the
general error state. Testing in a native Jetpack Compose application
confirms this behavior and provides a valuable comparison point against
the current Flutter form example.

**Suggested Action:** **Fork** the behavior in
https://github.com/flutter/flutter/pull/123373. Reinstate the use of
`liveRegion` for error announcements within `widgets/Form` for Android
and keep other platforms the same.

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [x] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

<!-- Links -->
[Contributor Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview
[Tree Hygiene]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md
[test-exempt]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests
[Flutter Style Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md
[Features we expect every widget to implement]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement
[CLA]: https://cla.developers.google.com/
[flutter/tests]: https://github.com/flutter/tests
[breaking change policy]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes
[Discord]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md
[Data Driven Fixes]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md

<!-- end_revert_body -->

Co-authored-by: auto-submit[bot] <flutter-engprod-team@google.com>

engine/src/flutter/lib/ui/window.dart

@@ -931,7 +931,6 @@ class AccessibilityFeatures {
   static const int _kReduceMotionIndex = 1 << 4;
   static const int _kHighContrastIndex = 1 << 5;
   static const int _kOnOffSwitchLabelsIndex = 1 << 6;
-  static const int _kNoAnnounceIndex = 1 << 7;
 
   // A bitfield which represents each enabled feature.
   final int _index;
@@ -969,20 +968,6 @@ class AccessibilityFeatures {
   /// Only supported on iOS.
   bool get onOffSwitchLabels => _kOnOffSwitchLabelsIndex & _index != 0;
 
-  /// Whether accessibility announcements (like [SemanticsService.announce])
-  /// are allowed on the current platform.
-  ///
-  /// Returns `false` on Android, where platform announcements are deprecated
-  /// by the underlying platform.
-  ///
-  /// Returns `true` on all other platforms (iOS, web, desktop) where such
-  /// announcements are generally supported without discouragement.
-  ///
-  /// Use this flag to conditionally avoid making announcements on Android.
-  // This is an inverted check on _index since there are many more platforms
-  // that support announce whereas don't.
-  bool get announce => _kNoAnnounceIndex & _index == 0;
-
   @override
   String toString() {
     final List<String> features = <String>[];
@@ -1007,9 +992,6 @@ class AccessibilityFeatures {
     if (onOffSwitchLabels) {
       features.add('onOffSwitchLabels');
     }
-    if (announce) {
-      features.add('announce');
-    }
     return 'AccessibilityFeatures$features';
   }
 

engine/src/flutter/lib/ui/window/platform_configuration.h

@@ -48,7 +48,6 @@ enum class AccessibilityFeatureFlag : int32_t {
   kReduceMotion = 1 << 4,
   kHighContrast = 1 << 5,
   kOnOffSwitchLabels = 1 << 6,
-  kNoAnnounce = 1 << 7,
 };
 
 //--------------------------------------------------------------------------

engine/src/flutter/lib/web_ui/lib/src/engine/semantics/semantics.dart

@@ -54,7 +54,6 @@ class EngineAccessibilityFeatures implements ui.AccessibilityFeatures {
   static const int _kReduceMotionIndex = 1 << 4;
   static const int _kHighContrastIndex = 1 << 5;
   static const int _kOnOffSwitchLabelsIndex = 1 << 6;
-  static const int _kNoAnnounceIndex = 1 << 7;
 
   // A bitfield which represents each enabled feature.
   final int _index;
@@ -73,10 +72,6 @@ class EngineAccessibilityFeatures implements ui.AccessibilityFeatures {
   bool get highContrast => _kHighContrastIndex & _index != 0;
   @override
   bool get onOffSwitchLabels => _kOnOffSwitchLabelsIndex & _index != 0;
-  // This is an inverted check on _index since there are many more platforms
-  // that support announce whereas don't.
-  @override
-  bool get announce => _kNoAnnounceIndex & _index == 0;
 
   @override
   String toString() {
@@ -102,9 +97,6 @@ class EngineAccessibilityFeatures implements ui.AccessibilityFeatures {
     if (onOffSwitchLabels) {
       features.add('onOffSwitchLabels');
     }
-    if (announce) {
-      features.add('announce');
-    }
     return 'AccessibilityFeatures$features';
   }
 
@@ -127,7 +119,6 @@ class EngineAccessibilityFeatures implements ui.AccessibilityFeatures {
     bool? reduceMotion,
     bool? highContrast,
     bool? onOffSwitchLabels,
-    bool? announce,
   }) {
     final EngineAccessibilityFeaturesBuilder builder = EngineAccessibilityFeaturesBuilder(0);
 
@@ -138,7 +129,6 @@ class EngineAccessibilityFeatures implements ui.AccessibilityFeatures {
     builder.reduceMotion = reduceMotion ?? this.reduceMotion;
     builder.highContrast = highContrast ?? this.highContrast;
     builder.onOffSwitchLabels = onOffSwitchLabels ?? this.onOffSwitchLabels;
-    builder.announce = announce ?? this.announce;
 
     return builder.build();
   }
@@ -156,9 +146,6 @@ class EngineAccessibilityFeaturesBuilder {
   bool get reduceMotion => EngineAccessibilityFeatures._kReduceMotionIndex & _index != 0;
   bool get highContrast => EngineAccessibilityFeatures._kHighContrastIndex & _index != 0;
   bool get onOffSwitchLabels => EngineAccessibilityFeatures._kOnOffSwitchLabelsIndex & _index != 0;
-  // This is an inverted check on _index since there are many more platforms
-  // that support announce whereas don't.
-  bool get announce => EngineAccessibilityFeatures._kNoAnnounceIndex & _index == 0;
 
   set accessibleNavigation(bool value) {
     const int accessibleNavigation = EngineAccessibilityFeatures._kAccessibleNavigation;
@@ -195,12 +182,6 @@ class EngineAccessibilityFeaturesBuilder {
     _index = value ? _index | onOffSwitchLabels : _index & ~onOffSwitchLabels;
   }
 
-  set announce(bool value) {
-    const int noAnnounce = EngineAccessibilityFeatures._kNoAnnounceIndex;
-    // Since we are using noAnnounce for the embedder, we need to flip the value.
-    _index = !value ? _index | noAnnounce : _index & ~noAnnounce;
-  }
-
   /// Creates and returns an instance of EngineAccessibilityFeatures based on the value of _index
   EngineAccessibilityFeatures build() {
     return EngineAccessibilityFeatures(_index);

engine/src/flutter/lib/web_ui/lib/window.dart

@@ -115,7 +115,6 @@ abstract class AccessibilityFeatures {
   bool get reduceMotion;
   bool get highContrast;
   bool get onOffSwitchLabels;
-  bool get announce;
 }
 
 enum Brightness { dark, light }

engine/src/flutter/lib/web_ui/test/engine/semantics/semantics_test.dart

@@ -299,14 +299,6 @@ void _testEngineAccessibilityBuilder() {
     expect(features.onOffSwitchLabels, isTrue);
   });
 
-  test('announce', () {
-    // By default this starts off true, see EngineAccessibilityFeatures.announce
-    expect(features.announce, isTrue);
-    builder.announce = false;
-    features = builder.build();
-    expect(features.announce, isFalse);
-  });
-
   test('reduce motion', () {
     expect(features.reduceMotion, isFalse);
     builder.reduceMotion = true;
@@ -399,10 +391,7 @@ void _testEngineSemanticsOwner() {
   });
 
   test('accessibilityFeatures copyWith function works', () {
-    // Announce is an inverted check, see EngineAccessibilityFeatures.announce.
+    const EngineAccessibilityFeatures original = EngineAccessibilityFeatures(0);
-    // Therefore, we need to ensure that the original copy starts with false (1 << 7).
-    const EngineAccessibilityFeatures original = EngineAccessibilityFeatures(0 | 1 << 7);
-
     EngineAccessibilityFeatures copy = original.copyWith(accessibleNavigation: true);
     expect(copy.accessibleNavigation, true);
     expect(copy.boldText, false);
@@ -410,7 +399,6 @@ void _testEngineSemanticsOwner() {
     expect(copy.highContrast, false);
     expect(copy.invertColors, false);
     expect(copy.onOffSwitchLabels, false);
-    expect(copy.announce, false);
     expect(copy.reduceMotion, false);
 
     copy = original.copyWith(boldText: true);
@@ -429,7 +417,6 @@ void _testEngineSemanticsOwner() {
     expect(copy.highContrast, false);
     expect(copy.invertColors, false);
     expect(copy.onOffSwitchLabels, false);
-    expect(copy.announce, false);
     expect(copy.reduceMotion, false);
 
     copy = original.copyWith(highContrast: true);
@@ -439,7 +426,6 @@ void _testEngineSemanticsOwner() {
     expect(copy.highContrast, true);
     expect(copy.invertColors, false);
     expect(copy.onOffSwitchLabels, false);
-    expect(copy.announce, false);
     expect(copy.reduceMotion, false);
 
     copy = original.copyWith(invertColors: true);
@@ -449,7 +435,6 @@ void _testEngineSemanticsOwner() {
     expect(copy.highContrast, false);
     expect(copy.invertColors, true);
     expect(copy.onOffSwitchLabels, false);
-    expect(copy.announce, false);
     expect(copy.reduceMotion, false);
 
     copy = original.copyWith(onOffSwitchLabels: true);
@@ -461,16 +446,6 @@ void _testEngineSemanticsOwner() {
     expect(copy.onOffSwitchLabels, true);
     expect(copy.reduceMotion, false);
 
-    copy = original.copyWith(announce: true);
-    expect(copy.accessibleNavigation, false);
-    expect(copy.boldText, false);
-    expect(copy.disableAnimations, false);
-    expect(copy.highContrast, false);
-    expect(copy.invertColors, false);
-    expect(copy.onOffSwitchLabels, false);
-    expect(copy.announce, true);
-    expect(copy.reduceMotion, false);
-
     copy = original.copyWith(reduceMotion: true);
     expect(copy.accessibleNavigation, false);
     expect(copy.boldText, false);
@@ -478,7 +453,6 @@ void _testEngineSemanticsOwner() {
     expect(copy.highContrast, false);
     expect(copy.invertColors, false);
     expect(copy.onOffSwitchLabels, false);
-    expect(copy.announce, false);
     expect(copy.reduceMotion, true);
   });
 

engine/src/flutter/shell/platform/android/io/flutter/view/AccessibilityBridge.java

@@ -490,7 +490,6 @@ public class AccessibilityBridge extends AccessibilityNodeProvider {
     this.accessibilityManager.addTouchExplorationStateChangeListener(
         touchExplorationStateChangeListener);
 
-    accessibilityFeatureFlags |= AccessibilityFeature.NO_ANNOUNCE.value;
     // Tell Flutter whether animations should initially be enabled or disabled. Then register a
     // listener to be notified of changes in the future.
     animationScaleObserver.onChange(false);
@@ -2171,8 +2170,7 @@ public class AccessibilityBridge extends AccessibilityNodeProvider {
     BOLD_TEXT(1 << 3), // NOT SUPPORTED
     REDUCE_MOTION(1 << 4), // NOT SUPPORTED
     HIGH_CONTRAST(1 << 5), // NOT SUPPORTED
-    ON_OFF_SWITCH_LABELS(1 << 6), // NOT SUPPORTED
+    ON_OFF_SWITCH_LABELS(1 << 6); // NOT SUPPORTED
-    NO_ANNOUNCE(1 << 7);
 
     final int value;
 

engine/src/flutter/shell/platform/android/test/io/flutter/view/AccessibilityBridgeTest.java

@@ -66,11 +66,6 @@ import org.robolectric.annotation.Config;
 @RunWith(AndroidJUnit4.class)
 public class AccessibilityBridgeTest {
 
-  private static final int ACCESSIBILITY_FEATURE_NAVIGATION = 1 << 0;
-  private static final int ACCESSIBILITY_FEATURE_DISABLE_ANIMATIONS = 1 << 2;
-  private static final int ACCESSIBILITY_FEATURE_BOLD_TEXT = 1 << 3;
-  private static final int ACCESSIBILITY_FEATURE_NO_ANNOUNCE = 1 << 7;
-
   @Test
   public void itDescribesNonTextFieldsWithAContentDescription() {
     AccessibilityBridge accessibilityBridge = setUpBridge();
@@ -140,26 +135,6 @@ public class AccessibilityBridgeTest {
     assertEquals(position, outBoundsInScreen.top);
   }
 
-  @Test
-  public void itSetsNoAnnounceAccessibleFlagByDefault() {
-    AccessibilityChannel mockChannel = mock(AccessibilityChannel.class);
-    AccessibilityViewEmbedder mockViewEmbedder = mock(AccessibilityViewEmbedder.class);
-    AccessibilityManager mockManager = mock(AccessibilityManager.class);
-    View mockRootView = mock(View.class);
-    Context context = mock(Context.class);
-    when(mockRootView.getContext()).thenReturn(context);
-    when(context.getPackageName()).thenReturn("test");
-    when(mockManager.isTouchExplorationEnabled()).thenReturn(false);
-    setUpBridge(
-        /*rootAccessibilityView=*/ mockRootView,
-        /*accessibilityChannel=*/ mockChannel,
-        /*accessibilityManager=*/ mockManager,
-        /*contentResolver=*/ null,
-        /*accessibilityViewEmbedder=*/ mockViewEmbedder,
-        /*platformViewsAccessibilityDelegate=*/ null);
-    verify(mockChannel).setAccessibilityFeatures(ACCESSIBILITY_FEATURE_NO_ANNOUNCE);
-  }
-
   @Test
   public void itSetsAccessibleNavigation() {
     AccessibilityChannel mockChannel = mock(AccessibilityChannel.class);
@@ -183,20 +158,18 @@ public class AccessibilityBridgeTest {
     verify(mockManager).addTouchExplorationStateChangeListener(listenerCaptor.capture());
 
     assertEquals(accessibilityBridge.getAccessibleNavigation(), false);
-    verify(mockChannel).setAccessibilityFeatures(ACCESSIBILITY_FEATURE_NO_ANNOUNCE);
+    verify(mockChannel).setAccessibilityFeatures(0);
     reset(mockChannel);
 
     // Simulate assistive technology accessing accessibility tree.
     accessibilityBridge.createAccessibilityNodeInfo(0);
-    verify(mockChannel)
+    verify(mockChannel).setAccessibilityFeatures(1);
-        .setAccessibilityFeatures(
-            ACCESSIBILITY_FEATURE_NAVIGATION | ACCESSIBILITY_FEATURE_NO_ANNOUNCE);
     assertEquals(accessibilityBridge.getAccessibleNavigation(), true);
 
     // Simulate turning off TalkBack.
     reset(mockChannel);
     listenerCaptor.getValue().onTouchExplorationStateChanged(false);
-    verify(mockChannel).setAccessibilityFeatures(ACCESSIBILITY_FEATURE_NO_ANNOUNCE);
+    verify(mockChannel).setAccessibilityFeatures(0);
     assertEquals(accessibilityBridge.getAccessibleNavigation(), false);
   }
 
@@ -1184,9 +1157,7 @@ public class AccessibilityBridgeTest {
             /*accessibilityViewEmbedder=*/ mockViewEmbedder,
             /*platformViewsAccessibilityDelegate=*/ null);
 
-    verify(mockChannel)
+    verify(mockChannel).setAccessibilityFeatures(1 << 3);
-        .setAccessibilityFeatures(
-            ACCESSIBILITY_FEATURE_BOLD_TEXT | ACCESSIBILITY_FEATURE_NO_ANNOUNCE);
     reset(mockChannel);
 
     // Now verify that clearing the BOLD_TEXT flag doesn't touch any of the other flags.
@@ -1208,9 +1179,7 @@ public class AccessibilityBridgeTest {
     // constructor, verify that the latest argument is correct
     ArgumentCaptor<Integer> captor = ArgumentCaptor.forClass(Integer.class);
     verify(mockChannel, atLeastOnce()).setAccessibilityFeatures(captor.capture());
-    assertEquals(
+    assertEquals(1 << 2 /* DISABLE_ANIMATION */, captor.getValue().intValue());
-        ACCESSIBILITY_FEATURE_DISABLE_ANIMATIONS | ACCESSIBILITY_FEATURE_NO_ANNOUNCE,
-        captor.getValue().intValue());
 
     // Set back to default
     Settings.Global.putFloat(null, "transition_animation_scale", 1.0f);
@@ -1904,21 +1873,19 @@ public class AccessibilityBridgeTest {
     ContentObserver observer = observerCaptor.getValue();
 
     // Initial state
-    verify(mockChannel).setAccessibilityFeatures(ACCESSIBILITY_FEATURE_NO_ANNOUNCE);
+    verify(mockChannel).setAccessibilityFeatures(0);
     reset(mockChannel);
 
     // Animations are disabled
     Settings.Global.putFloat(mockContentResolver, "transition_animation_scale", 0.0f);
     observer.onChange(false);
-    verify(mockChannel)
+    verify(mockChannel).setAccessibilityFeatures(1 << 2);
-        .setAccessibilityFeatures(
-            ACCESSIBILITY_FEATURE_DISABLE_ANIMATIONS | ACCESSIBILITY_FEATURE_NO_ANNOUNCE);
     reset(mockChannel);
 
     // Animations are enabled
     Settings.Global.putFloat(mockContentResolver, "transition_animation_scale", 1.0f);
     observer.onChange(false);
-    verify(mockChannel).setAccessibilityFeatures(ACCESSIBILITY_FEATURE_NO_ANNOUNCE);
+    verify(mockChannel).setAccessibilityFeatures(0);
   }
 
   @Test

engine/src/flutter/shell/platform/embedder/embedder.h

@@ -105,8 +105,6 @@ typedef enum {
   kFlutterAccessibilityFeatureHighContrast = 1 << 5,
   /// Request to show on/off labels inside switches.
   kFlutterAccessibilityFeatureOnOffSwitchLabels = 1 << 6,
-  /// Indicate the platform does not support announcements.
-  kFlutterAccessibilityFeatureNoAnnounce = 1 << 7,
 } FlutterAccessibilityFeature;
 
 /// The set of possible actions that can be conveyed to a semantics node.

packages/flutter/lib/src/material/input_decorator.dart

@@ -322,7 +322,6 @@ class _HelperErrorState extends State<_HelperError> with SingleTickerProviderSta
   void initState() {
     super.initState();
     _controller = AnimationController(duration: _kTransitionDuration, vsync: this);
-    // TODO(ash2moon): https://github.com/flutter/flutter/issues/168022
     if (_hasError) {
       _error = _buildError();
       _controller.value = 1.0;
@@ -400,31 +399,26 @@ class _HelperErrorState extends State<_HelperError> with SingleTickerProviderSta
 
   Widget _buildError() {
     assert(widget.error != null || widget.errorText != null);
-    return Builder(
+    return Semantics(
-      builder: (BuildContext context) {
+      container: true,
-        return Semantics(
+      child: FadeTransition(
-          container: true,
+        opacity: _controller,
-          liveRegion: !MediaQuery.announceOf(context),
+        child: FractionalTranslation(
-          child: FadeTransition(
+          translation: Tween<Offset>(
-            opacity: _controller,
+            begin: const Offset(0.0, -0.25),
-            child: FractionalTranslation(
+            end: Offset.zero,
-              translation: Tween<Offset>(
+          ).evaluate(_controller.view),
-                begin: const Offset(0.0, -0.25),
+          child:
-                end: Offset.zero,
+              widget.error ??
-              ).evaluate(_controller.view),
+              Text(
-              child:
+                widget.errorText!,
-                  widget.error ??
+                style: widget.errorStyle,
-                  Text(
+                textAlign: widget.textAlign,
-                    widget.errorText!,
+                overflow: TextOverflow.ellipsis,
-                    style: widget.errorStyle,
+                maxLines: widget.errorMaxLines,
-                    textAlign: widget.textAlign,
+              ),
-                    overflow: TextOverflow.ellipsis,
+        ),
-                    maxLines: widget.errorMaxLines,
+      ),
-                  ),
-            ),
-          ),
-        );
-      },
     );
   }
 
@@ -3933,7 +3927,6 @@ class InputDecoration {
     bool? alignLabelWithHint,
     BoxConstraints? constraints,
     VisualDensity? visualDensity,
-    SemanticsService? semanticsService,
   }) {
     return InputDecoration(
       icon: icon ?? this.icon,

packages/flutter/lib/src/semantics/semantics_service.dart

@@ -7,6 +7,7 @@ library;
 
 import 'dart:ui' show TextDirection;
 
+import 'package:flutter/foundation.dart';
 import 'package:flutter/services.dart' show SystemChannels;
 
 import 'semantics_event.dart' show AnnounceSemanticsEvent, Assertiveness, TooltipSemanticsEvent;
@@ -33,8 +34,8 @@ abstract final class SemanticsService {
   /// Currently, this is only supported by the web engine and has no effect on
   /// other platforms. The default mode is [Assertiveness.polite].
   ///
-  /// Not all platforms support announcements. Check to see if it is supported using
+  /// Not all platforms support announcements. Check to see if
-  /// [MediaQuery.announceOf] before calling this method.
+  /// [isAnnounceSupported] before calling this method.
   ///
   /// ### Android
   /// Android has [deprecated announcement events][1] due to its disruptive
@@ -65,4 +66,12 @@ abstract final class SemanticsService {
     final TooltipSemanticsEvent event = TooltipSemanticsEvent(message);
     await SystemChannels.accessibility.send(event.toMap());
   }
+
+  /// Checks if announce is supported on the given platform.
+  ///
+  /// On Android the announce method is deprecated, therefore will return false.
+  /// On other platforms, this will return true.
+  static bool isAnnounceSupported() {
+    return defaultTargetPlatform != TargetPlatform.android;
+  }
 }

packages/flutter/lib/src/widgets/form.dart

@@ -16,7 +16,6 @@ import 'binding.dart';
 import 'focus_manager.dart';
 import 'focus_scope.dart';
 import 'framework.dart';
-import 'media_query.dart';
 import 'navigator.dart';
 import 'pop_scope.dart';
 import 'restoration.dart';
@@ -370,7 +369,7 @@ class FormState extends State<Form> {
       }
     }
 
-    if (errorMessage.isNotEmpty && MediaQuery.announceOf(context)) {
+    if (errorMessage.isNotEmpty) {
       final TextDirection directionality = Directionality.of(context);
       if (defaultTargetPlatform == TargetPlatform.iOS) {
         unawaited(

packages/flutter/lib/src/widgets/media_query.dart

@@ -103,9 +103,6 @@ enum _MediaQueryAspect {
   /// Specifies the aspect corresponding to [MediaQueryData.boldText].
   boldText,
 
-  /// Specifies the aspect corresponding to [MediaQueryData.announce].
-  announce,
-
   /// Specifies the aspect corresponding to [MediaQueryData.navigationMode].
   navigationMode,
 
@@ -213,7 +210,6 @@ class MediaQueryData {
     this.onOffSwitchLabels = false,
     this.disableAnimations = false,
     this.boldText = false,
-    this.announce = false,
     this.navigationMode = NavigationMode.traditional,
     this.gestureSettings = const DeviceGestureSettings(touchSlop: kTouchSlop),
     this.displayFeatures = const <ui.DisplayFeature>[],
@@ -299,7 +295,6 @@ class MediaQueryData {
           platformData?.disableAnimations ??
           view.platformDispatcher.accessibilityFeatures.disableAnimations,
       boldText = platformData?.boldText ?? view.platformDispatcher.accessibilityFeatures.boldText,
-      announce = platformData?.announce ?? view.platformDispatcher.accessibilityFeatures.announce,
       highContrast =
           platformData?.highContrast ?? view.platformDispatcher.accessibilityFeatures.highContrast,
       onOffSwitchLabels =
@@ -589,23 +584,6 @@ class MediaQueryData {
   ///    originates.
   final bool boldText;
 
-  /// Whether accessibility announcements (like [SemanticsService.announce])
-  /// are allowed on the current platform.
-  ///
-  /// Returns `false` on Android, where platform announcements are deprecated
-  /// by the underlying platform.
-  ///
-  /// Returns `true` on all other platforms (iOS, web, desktop) where such
-  /// announcements are generally supported without discouragement.
-  ///
-  /// Use this flag to conditionally avoid making announcements on Android.
-  ///
-  /// See also:
-  ///
-  ///  * [dart:ui.PlatformDispatcher.accessibilityFeatures], where the setting
-  ///    originates.
-  final bool announce;
-
   /// Describes the navigation mode requested by the platform.
   ///
   /// Some user interfaces are better navigated using a directional pad (DPAD)
@@ -687,7 +665,6 @@ class MediaQueryData {
     bool? invertColors,
     bool? accessibleNavigation,
     bool? boldText,
-    bool? announce,
     NavigationMode? navigationMode,
     DeviceGestureSettings? gestureSettings,
     List<ui.DisplayFeature>? displayFeatures,
@@ -713,7 +690,6 @@ class MediaQueryData {
       disableAnimations: disableAnimations ?? this.disableAnimations,
       accessibleNavigation: accessibleNavigation ?? this.accessibleNavigation,
       boldText: boldText ?? this.boldText,
-      announce: announce ?? this.announce,
       navigationMode: navigationMode ?? this.navigationMode,
       gestureSettings: gestureSettings ?? this.gestureSettings,
       displayFeatures: displayFeatures ?? this.displayFeatures,
@@ -916,7 +892,6 @@ class MediaQueryData {
         other.invertColors == invertColors &&
         other.accessibleNavigation == accessibleNavigation &&
         other.boldText == boldText &&
-        other.announce == announce &&
         other.navigationMode == navigationMode &&
         other.gestureSettings == gestureSettings &&
         listEquals(other.displayFeatures, displayFeatures) &&
@@ -1738,27 +1713,6 @@ class MediaQuery extends InheritedModel<_MediaQueryAspect> {
   static bool? maybeBoldTextOf(BuildContext context) =>
       _maybeOf(context, _MediaQueryAspect.boldText)?.boldText;
 
-  /// Returns the [MediaQueryData.announce] accessibility setting for the
-  /// nearest [MediaQuery] ancestor or false, if no such ancestor exists.
-  ///
-  /// Use of this method will cause the given [context] to rebuild any time that
-  /// the [MediaQueryData.announce] property of the ancestor [MediaQuery]
-  /// changes.
-  ///
-  /// {@macro flutter.widgets.media_query.MediaQuery.dontUseOf}
-  static bool announceOf(BuildContext context) => maybeAnnounceOf(context) ?? false;
-
-  /// Returns the [MediaQueryData.announce] accessibility setting for the
-  /// nearest [MediaQuery] ancestor or null, if no such ancestor exists.
-  ///
-  /// Use of this method will cause the given [context] to rebuild any time that
-  /// the [MediaQueryData.announce] property of the ancestor [MediaQuery]
-  /// changes.
-  ///
-  /// {@macro flutter.widgets.media_query.MediaQuery.dontUseMaybeOf}
-  static bool? maybeAnnounceOf(BuildContext context) =>
-      _maybeOf(context, _MediaQueryAspect.announce)?.announce;
-
   /// Returns [MediaQueryData.navigationMode] for the nearest [MediaQuery]
   /// ancestor or throws an exception, if no such ancestor exists.
   ///
@@ -1889,7 +1843,6 @@ class MediaQuery extends InheritedModel<_MediaQueryAspect> {
             _MediaQueryAspect.disableAnimations =>
               data.disableAnimations != oldWidget.data.disableAnimations,
             _MediaQueryAspect.boldText => data.boldText != oldWidget.data.boldText,
-            _MediaQueryAspect.announce => data.announce != oldWidget.data.announce,
             _MediaQueryAspect.navigationMode =>
               data.navigationMode != oldWidget.data.navigationMode,
             _MediaQueryAspect.gestureSettings =>

packages/flutter/test/material/text_field_test.dart

@@ -8945,67 +8945,55 @@ void main() {
     semantics.dispose();
   });
 
-  for (final bool announce in <bool>[true, false]) {
+  testWidgets('InputDecoration errorText semantics', (WidgetTester tester) async {
-    testWidgets('InputDecoration errorText semantics (announce=$announce)', (
+    final SemanticsTester semantics = SemanticsTester(tester);
-      WidgetTester tester,
+    final TextEditingController controller = _textEditingController();
-    ) async {
+    final Key key = UniqueKey();
-      final SemanticsTester semantics = SemanticsTester(tester);
-      final TextEditingController controller = _textEditingController();
-      final Key key = UniqueKey();
 
-      await tester.pumpWidget(
+    await tester.pumpWidget(
-        overlay(
+      overlay(
-          child: MediaQuery(
+        child: TextField(
-            data: MediaQueryData(announce: announce),
+          key: key,
-            child: TextField(
+          controller: controller,
-              key: key,
+          decoration: const InputDecoration(
-              controller: controller,
+            labelText: 'label',
-              decoration: const InputDecoration(
+            hintText: 'hint',
-                labelText: 'label',
+            errorText: 'oh no!',
-                hintText: 'hint',
+          ),
-                errorText: 'oh no!',
+        ),
-              ),
+      ),
+    );
+
+    expect(
+      semantics,
+      hasSemantics(
+        TestSemantics.root(
+          children: <TestSemantics>[
+            TestSemantics.rootChild(
+              label: 'label',
+              textDirection: TextDirection.ltr,
+              actions: <SemanticsAction>[SemanticsAction.tap, SemanticsAction.focus],
+              flags: <SemanticsFlag>[
+                SemanticsFlag.isTextField,
+                SemanticsFlag.hasEnabledState,
+                SemanticsFlag.isEnabled,
+              ],
+              inputType: ui.SemanticsInputType.text,
+              currentValueLength: 0,
+              children: <TestSemantics>[
+                TestSemantics(label: 'oh no!', textDirection: TextDirection.ltr),
+              ],
             ),
-          ),
+          ],
         ),
-      );
+        ignoreTransform: true,
+        ignoreRect: true,
+        ignoreId: true,
+      ),
+    );
 
-      expect(
+    semantics.dispose();
-        semantics,
+  });
-        hasSemantics(
-          TestSemantics.root(
-            children: <TestSemantics>[
-              TestSemantics.rootChild(
-                label: 'label',
-                textDirection: TextDirection.ltr,
-                actions: <SemanticsAction>[SemanticsAction.tap, SemanticsAction.focus],
-                flags: <SemanticsFlag>[
-                  SemanticsFlag.isTextField,
-                  SemanticsFlag.hasEnabledState,
-                  SemanticsFlag.isEnabled,
-                ],
-                inputType: ui.SemanticsInputType.text,
-                currentValueLength: 0,
-                children: <TestSemantics>[
-                  TestSemantics(
-                    label: 'oh no!',
-                    textDirection: TextDirection.ltr,
-                    flags: <SemanticsFlag>[if (!announce) SemanticsFlag.isLiveRegion],
-                  ),
-                ],
-              ),
-            ],
-          ),
-          ignoreTransform: true,
-          ignoreRect: true,
-          ignoreId: true,
-        ),
-      );
-
-      semantics.dispose();
-      debugDefaultTargetPlatformOverride = null;
-    });
-  }
 
   testWidgets('floating label does not overlap with value at large textScaleFactors', (
     WidgetTester tester,

packages/flutter/test/semantics/semantics_service_test.dart

@@ -2,8 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+import 'package:flutter/foundation.dart';
 import 'package:flutter/semantics.dart';
-import 'package:flutter/services.dart' show SystemChannels;
+import 'package:flutter/services.dart' show SystemChannels, TargetPlatform;
 import 'package:flutter_test/flutter_test.dart';
 
 void main() {
@@ -44,4 +45,12 @@ void main() {
       ]),
     );
   });
+
+  for (final TargetPlatform platform in TargetPlatform.values) {
+    test('Announce not supported on Android. (platform=$platform)', () {
+      debugDefaultTargetPlatformOverride = platform;
+      expect(SemanticsService.isAnnounceSupported(), platform != TargetPlatform.android);
+      debugDefaultTargetPlatformOverride = null;
+    });
+  }
 }

packages/flutter/test/widgets/form_test.dart

@@ -169,67 +169,50 @@ void main() {
     await checkErrorText('');
   });
 
-  for (final _PlatformAnnounceScenario test in <_PlatformAnnounceScenario>[
+  testWidgets('Should announce only the first error message when validate returns errors', (
-    _PlatformAnnounceScenario(
+    WidgetTester tester,
-      announce: false,
+  ) async {
-      testName:
+    final GlobalKey<FormState> formKey = GlobalKey<FormState>();
-          'Should announce only the first error message when validate returns errors and announce = false',
+    await tester.pumpWidget(
-    ),
+      MaterialApp(
-    _PlatformAnnounceScenario(
+        home: MediaQuery(
-      announce: true,
+          data: const MediaQueryData(),
-      testName:
+          child: Directionality(
-          'Should not announce error message when validate returns errors and announce = true',
+            textDirection: TextDirection.ltr,
-    ),
+            child: Center(
-  ]) {
+              child: Material(
-    testWidgets(test.testName, (WidgetTester tester) async {
+                child: Form(
-      final GlobalKey<FormState> formKey = GlobalKey<FormState>();
+                  key: formKey,
-      await tester.pumpWidget(
+                  child: Column(
-        MaterialApp(
+                    children: <Widget>[
-          home: MediaQuery(
+                      TextFormField(validator: (_) => 'First error message'),
-            data: MediaQueryData(announce: test.announce),
+                      TextFormField(validator: (_) => 'Second error message'),
-            child: Directionality(
+                    ],
-              textDirection: TextDirection.ltr,
-              child: Center(
-                child: Material(
-                  child: Form(
-                    key: formKey,
-                    child: Column(
-                      children: <Widget>[
-                        TextFormField(validator: (_) => 'First error message'),
-                        TextFormField(validator: (_) => 'Second error message'),
-                      ],
-                    ),
                   ),
                 ),
               ),
             ),
           ),
         ),
-      );
+      ),
-      formKey.currentState!.reset();
+    );
-      await tester.enterText(find.byType(TextFormField).first, '');
+    formKey.currentState!.reset();
-      await tester.pump();
+    await tester.enterText(find.byType(TextFormField).first, '');
+    await tester.pump();
 
-      // Manually validate.
+    // Manually validate.
-      expect(find.text('First error message'), findsNothing);
+    expect(find.text('First error message'), findsNothing);
-      expect(find.text('Second error message'), findsNothing);
+    expect(find.text('Second error message'), findsNothing);
-      formKey.currentState!.validate();
+    formKey.currentState!.validate();
-      await tester.pump();
+    await tester.pump();
-      expect(find.text('First error message'), findsOneWidget);
+    expect(find.text('First error message'), findsOneWidget);
-      expect(find.text('Second error message'), findsOneWidget);
+    expect(find.text('Second error message'), findsOneWidget);
 
-      if (test.announce) {
+    final CapturedAccessibilityAnnouncement announcement = tester.takeAnnouncements().single;
-        final CapturedAccessibilityAnnouncement announcement = tester.takeAnnouncements().single;
+    expect(announcement.message, 'First error message');
-        expect(announcement.message, 'First error message');
+    expect(announcement.textDirection, TextDirection.ltr);
-        expect(announcement.textDirection, TextDirection.ltr);
+    expect(announcement.assertiveness, Assertiveness.assertive);
-        expect(announcement.assertiveness, Assertiveness.assertive);
+  });
-      } else {
-        final CapturedAccessibilityAnnouncement? announcement =
-            tester.takeAnnouncements().firstOrNull;
-        expect(announcement, null);
-      }
-    });
-  }
 
   testWidgets('isValid returns true when a field is valid', (WidgetTester tester) async {
     final GlobalKey<FormFieldState<String>> fieldKey1 = GlobalKey<FormFieldState<String>>();
@@ -405,7 +388,7 @@ void main() {
     Widget builder() {
       return MaterialApp(
         home: MediaQuery(
-          data: const MediaQueryData(announce: true),
+          data: const MediaQueryData(),
           child: Directionality(
             textDirection: TextDirection.ltr,
             child: Center(
@@ -1632,9 +1615,3 @@ void main() {
     );
   });
 }
-
-class _PlatformAnnounceScenario {
-  _PlatformAnnounceScenario({required this.announce, required this.testName});
-  final bool announce;
-  final String testName;
-}

packages/flutter/test/widgets/media_query_test.dart

@@ -144,7 +144,6 @@ void main() {
   });
 
   testWidgets('MediaQueryData.fromView is sane', (WidgetTester tester) async {
-    tester.platformDispatcher.accessibilityFeaturesTestValue = const FakeAccessibilityFeatures();
     final MediaQueryData data = MediaQueryData.fromView(tester.view);
     expect(data, hasOneLineDescription);
     expect(data.hashCode, equals(data.copyWith().hashCode));
@@ -155,7 +154,6 @@ void main() {
     expect(data.boldText, false);
     expect(data.highContrast, false);
     expect(data.onOffSwitchLabels, false);
-    expect(data.announce, false);
     expect(data.platformBrightness, Brightness.light);
     expect(data.gestureSettings.touchSlop, null);
     expect(data.displayFeatures, isEmpty);
@@ -171,7 +169,6 @@ void main() {
       boldText: true,
       highContrast: true,
       onOffSwitchLabels: true,
-      announce: true,
       alwaysUse24HourFormat: true,
       navigationMode: NavigationMode.directional,
     );
@@ -205,7 +202,6 @@ void main() {
     expect(data.boldText, platformData.boldText);
     expect(data.highContrast, platformData.highContrast);
     expect(data.onOffSwitchLabels, platformData.onOffSwitchLabels);
-    expect(data.announce, platformData.announce);
     expect(data.alwaysUse24HourFormat, platformData.alwaysUse24HourFormat);
     expect(data.navigationMode, platformData.navigationMode);
     expect(data.gestureSettings, DeviceGestureSettings.fromView(tester.view));
@@ -259,7 +255,6 @@ void main() {
         data.onOffSwitchLabels,
         tester.platformDispatcher.accessibilityFeatures.onOffSwitchLabels,
       );
-      expect(data.announce, tester.platformDispatcher.accessibilityFeatures.announce);
       expect(data.alwaysUse24HourFormat, tester.platformDispatcher.alwaysUse24HourFormat);
       expect(data.navigationMode, NavigationMode.traditional);
       expect(data.gestureSettings, DeviceGestureSettings.fromView(tester.view));
@@ -279,7 +274,6 @@ void main() {
         boldText: true,
         highContrast: true,
         onOffSwitchLabels: true,
-        announce: true,
         alwaysUse24HourFormat: true,
         navigationMode: NavigationMode.directional,
       );
@@ -327,7 +321,6 @@ void main() {
       expect(data.boldText, platformData.boldText);
       expect(data.highContrast, platformData.highContrast);
       expect(data.onOffSwitchLabels, platformData.onOffSwitchLabels);
-      expect(data.announce, platformData.announce);
       expect(data.alwaysUse24HourFormat, platformData.alwaysUse24HourFormat);
       expect(data.navigationMode, platformData.navigationMode);
       expect(data.gestureSettings, DeviceGestureSettings.fromView(tester.view));
@@ -400,7 +393,6 @@ void main() {
         data.onOffSwitchLabels,
         tester.platformDispatcher.accessibilityFeatures.onOffSwitchLabels,
       );
-      expect(data.announce, tester.platformDispatcher.accessibilityFeatures.announce);
       expect(data.alwaysUse24HourFormat, tester.platformDispatcher.alwaysUse24HourFormat);
       expect(data.navigationMode, NavigationMode.traditional);
       expect(data.gestureSettings, DeviceGestureSettings.fromView(tester.view));
@@ -585,7 +577,6 @@ void main() {
     expect(copied.boldText, data.boldText);
     expect(copied.highContrast, data.highContrast);
     expect(copied.onOffSwitchLabels, data.onOffSwitchLabels);
-    expect(copied.announce, data.announce);
     expect(copied.platformBrightness, data.platformBrightness);
     expect(copied.gestureSettings, data.gestureSettings);
     expect(copied.displayFeatures, data.displayFeatures);
@@ -626,7 +617,6 @@ void main() {
       boldText: true,
       highContrast: true,
       onOffSwitchLabels: true,
-      announce: true,
       platformBrightness: Brightness.dark,
       navigationMode: NavigationMode.directional,
       gestureSettings: gestureSettings,
@@ -646,7 +636,6 @@ void main() {
     expect(copied.boldText, true);
     expect(copied.highContrast, true);
     expect(copied.onOffSwitchLabels, true);
-    expect(copied.announce, true);
     expect(copied.platformBrightness, Brightness.dark);
     expect(copied.navigationMode, NavigationMode.directional);
     expect(copied.gestureSettings, gestureSettings);
@@ -685,7 +674,6 @@ void main() {
           boldText: true,
           highContrast: true,
           onOffSwitchLabels: true,
-          announce: true,
           navigationMode: NavigationMode.directional,
           displayFeatures: displayFeatures,
         ),
@@ -722,7 +710,6 @@ void main() {
     expect(unpadded.boldText, true);
     expect(unpadded.highContrast, true);
     expect(unpadded.onOffSwitchLabels, true);
-    expect(unpadded.announce, true);
     expect(unpadded.navigationMode, NavigationMode.directional);
     expect(unpadded.displayFeatures, displayFeatures);
   });
@@ -761,7 +748,6 @@ void main() {
           boldText: true,
           highContrast: true,
           onOffSwitchLabels: true,
-          announce: true,
           navigationMode: NavigationMode.directional,
           displayFeatures: displayFeatures,
         ),
@@ -795,7 +781,6 @@ void main() {
     expect(unpadded.boldText, true);
     expect(unpadded.highContrast, true);
     expect(unpadded.onOffSwitchLabels, true);
-    expect(unpadded.announce, true);
     expect(unpadded.navigationMode, NavigationMode.directional);
     expect(unpadded.displayFeatures, displayFeatures);
   });
@@ -834,7 +819,6 @@ void main() {
           boldText: true,
           highContrast: true,
           onOffSwitchLabels: true,
-          announce: true,
           navigationMode: NavigationMode.directional,
           displayFeatures: displayFeatures,
         ),
@@ -871,7 +855,6 @@ void main() {
     expect(unpadded.boldText, true);
     expect(unpadded.highContrast, true);
     expect(unpadded.onOffSwitchLabels, true);
-    expect(unpadded.announce, true);
     expect(unpadded.navigationMode, NavigationMode.directional);
     expect(unpadded.displayFeatures, displayFeatures);
   });
@@ -910,7 +893,6 @@ void main() {
           boldText: true,
           highContrast: true,
           onOffSwitchLabels: true,
-          announce: true,
           navigationMode: NavigationMode.directional,
           displayFeatures: displayFeatures,
         ),
@@ -944,7 +926,6 @@ void main() {
     expect(unpadded.boldText, true);
     expect(unpadded.highContrast, true);
     expect(unpadded.onOffSwitchLabels, true);
-    expect(unpadded.announce, true);
     expect(unpadded.navigationMode, NavigationMode.directional);
     expect(unpadded.displayFeatures, displayFeatures);
   });
@@ -983,7 +964,6 @@ void main() {
           boldText: true,
           highContrast: true,
           onOffSwitchLabels: true,
-          announce: true,
           navigationMode: NavigationMode.directional,
           displayFeatures: displayFeatures,
         ),
@@ -1020,7 +1000,6 @@ void main() {
     expect(unpadded.boldText, true);
     expect(unpadded.highContrast, true);
     expect(unpadded.onOffSwitchLabels, true);
-    expect(unpadded.announce, true);
     expect(unpadded.navigationMode, NavigationMode.directional);
     expect(unpadded.displayFeatures, displayFeatures);
   });
@@ -1059,7 +1038,6 @@ void main() {
           boldText: true,
           highContrast: true,
           onOffSwitchLabels: true,
-          announce: true,
           navigationMode: NavigationMode.directional,
           displayFeatures: displayFeatures,
         ),
@@ -1093,7 +1071,6 @@ void main() {
     expect(unpadded.boldText, true);
     expect(unpadded.highContrast, true);
     expect(unpadded.onOffSwitchLabels, true);
-    expect(unpadded.announce, true);
     expect(unpadded.navigationMode, NavigationMode.directional);
     expect(unpadded.displayFeatures, displayFeatures);
   });
@@ -1198,32 +1175,6 @@ void main() {
     expect(insideOnOffSwitchLabels, true);
   });
 
-  testWidgets('MediaQuery.announce', (WidgetTester tester) async {
-    late bool outsideAnnounce;
-    late bool insideAnnounce;
-
-    tester.platformDispatcher.accessibilityFeaturesTestValue = const FakeAccessibilityFeatures();
-    await tester.pumpWidget(
-      Builder(
-        builder: (BuildContext context) {
-          outsideAnnounce = MediaQuery.announceOf(context);
-          return MediaQuery(
-            data: const MediaQueryData(announce: true),
-            child: Builder(
-              builder: (BuildContext context) {
-                insideAnnounce = MediaQuery.announceOf(context);
-                return Container();
-              },
-            ),
-          );
-        },
-      ),
-    );
-
-    expect(outsideAnnounce, false);
-    expect(insideAnnounce, true);
-  });
-
   testWidgets('MediaQuery.boldTextOf', (WidgetTester tester) async {
     late bool outsideBoldTextOverride;
     late bool insideBoldTextOverride;
@@ -1363,7 +1314,6 @@ void main() {
           boldText: true,
           highContrast: true,
           onOffSwitchLabels: true,
-          announce: true,
           displayFeatures: displayFeatures,
         ),
         child: Builder(
@@ -1395,7 +1345,6 @@ void main() {
     expect(subScreenMediaQuery.boldText, true);
     expect(subScreenMediaQuery.highContrast, true);
     expect(subScreenMediaQuery.onOffSwitchLabels, true);
-    expect(subScreenMediaQuery.announce, true);
     expect(subScreenMediaQuery.displayFeatures, isEmpty);
   });
 
@@ -1442,7 +1391,6 @@ void main() {
           boldText: true,
           highContrast: true,
           onOffSwitchLabels: true,
-          announce: true,
           displayFeatures: displayFeatures,
         ),
         child: Builder(
@@ -1480,7 +1428,6 @@ void main() {
     expect(subScreenMediaQuery.boldText, true);
     expect(subScreenMediaQuery.highContrast, true);
     expect(subScreenMediaQuery.onOffSwitchLabels, true);
-    expect(subScreenMediaQuery.announce, true);
     expect(subScreenMediaQuery.displayFeatures, <DisplayFeature>[cutoutDisplayFeature]);
   });
 
@@ -1745,8 +1692,6 @@ void main() {
           MediaQuery.maybeOnOffSwitchLabelsOf,
           MediaQueryData(onOffSwitchLabels: true),
         ),
-        const _MediaQueryAspectCase(MediaQuery.announceOf, MediaQueryData(announce: true)),
-        const _MediaQueryAspectCase(MediaQuery.maybeAnnounceOf, MediaQueryData(announce: true)),
         const _MediaQueryAspectCase(
           MediaQuery.disableAnimationsOf,
           MediaQueryData(disableAnimations: true),

packages/flutter_test/lib/src/window.dart

@@ -32,7 +32,6 @@ class FakeAccessibilityFeatures implements AccessibilityFeatures {
     this.reduceMotion = false,
     this.highContrast = false,
     this.onOffSwitchLabels = false,
-    this.announce = false,
   });
 
   /// An instance of [AccessibilityFeatures] where all the features are enabled.
@@ -44,7 +43,6 @@ class FakeAccessibilityFeatures implements AccessibilityFeatures {
     reduceMotion: true,
     highContrast: true,
     onOffSwitchLabels: true,
-    announce: true,
   );
 
   @override
@@ -68,9 +66,6 @@ class FakeAccessibilityFeatures implements AccessibilityFeatures {
   @override
   final bool onOffSwitchLabels;
 
-  @override
-  final bool announce;
-
   @override
   bool operator ==(Object other) {
     if (other.runtimeType != runtimeType) {
@@ -83,8 +78,7 @@ class FakeAccessibilityFeatures implements AccessibilityFeatures {
         other.boldText == boldText &&
         other.reduceMotion == reduceMotion &&
         other.highContrast == highContrast &&
-        other.onOffSwitchLabels == onOffSwitchLabels &&
+        other.onOffSwitchLabels == onOffSwitchLabels;
-        other.announce == announce;
   }
 
   @override
@@ -97,7 +91,6 @@ class FakeAccessibilityFeatures implements AccessibilityFeatures {
       reduceMotion,
       highContrast,
       onOffSwitchLabels,
-      announce,
     );
   }