[MaterialToolbar] Override inflateMenu() to stop dispatching item cha…

…nges during inflation for a performance improvement

PiperOrigin-RevId: 503995162

lib/java/com/google/android/material/appbar/MaterialToolbar.java

@@ -28,9 +28,11 @@
 import android.graphics.drawable.ColorDrawable;
 import android.graphics.drawable.Drawable;
 import android.os.Build.VERSION_CODES;
+import androidx.appcompat.view.menu.MenuBuilder;
 import androidx.appcompat.widget.Toolbar;
 import android.util.AttributeSet;
 import android.util.Pair;
+import android.view.Menu;
 import android.view.View;
 import android.view.View.MeasureSpec;
 import android.widget.ImageView;
@@ -127,6 +129,19 @@ public MaterialToolbar(@NonNull Context context, @Nullable AttributeSet attrs, i
     initBackground(context);
   }
 
+  @Override
+  public void inflateMenu(int i) {
+    // Pause dispatching item changes during inflation to improve performance.
+    Menu menu = getMenu();
+    if (menu instanceof MenuBuilder) {
+      ((MenuBuilder) menu).stopDispatchingItemsChanged();
+    }
+    super.inflateMenu(i);
+    if (menu instanceof MenuBuilder) {
+      ((MenuBuilder) menu).startDispatchingItemsChanged();
+    }
+  }
+
   @Override
   protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
     super.onLayout(changed, left, top, right, bottom);