From ac1a00021c7ab94332069503adef57069c6899a2 Mon Sep 17 00:00:00 2001
From: pekingme <8545955+pekingme@users.noreply.github.com>
Date: Fri, 23 Aug 2024 22:57:42 +0000
Subject: [PATCH] [ToggleButtonGroup] Fixed incorrect A11y class name in child
 button added in single selection group.

PiperOrigin-RevId: 666950537
---
 .../material/button/MaterialButtonToggleGroup.java       | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/lib/java/com/google/android/material/button/MaterialButtonToggleGroup.java b/lib/java/com/google/android/material/button/MaterialButtonToggleGroup.java
index cd6247b0e35..01bed00e65f 100644
--- a/lib/java/com/google/android/material/button/MaterialButtonToggleGroup.java
+++ b/lib/java/com/google/android/material/button/MaterialButtonToggleGroup.java
@@ -387,13 +387,17 @@ public void setSingleSelection(boolean singleSelection) {
   }
 
   private void updateChildrenA11yClassName() {
+    String className = getChildrenA11yClassName();
     for (int i = 0; i < getChildCount(); i++) {
-      String className =
-          singleSelection ? RadioButton.class.getName() : ToggleButton.class.getName();
       getChildButton(i).setA11yClassName(className);
     }
   }
 
+  @NonNull
+  private String getChildrenA11yClassName() {
+    return singleSelection ? RadioButton.class.getName() : ToggleButton.class.getName();
+  }
+
   /**
    * Sets whether we prevent all child buttons from being deselected.
    *
@@ -517,6 +521,7 @@ private void setupButtonChild(@NonNull MaterialButton buttonChild) {
     buttonChild.setMaxLines(1);
     buttonChild.setEllipsize(TruncateAt.END);
     buttonChild.setCheckable(true);
+    buttonChild.setA11yClassName(getChildrenA11yClassName());
 
     // Enables surface layer drawing for semi-opaque strokes
     buttonChild.setShouldDrawSurfaceColorStroke(true);