Remove disruptive announcement when exiting folder

Accessibility announcement needs to be disabled when folder is closing

Test: Manual
Flag: EXEMPT bug fix
Fix: 383248901
Change-Id: Ie6077a1214c234946bc9fb59ce54dfa7107188bd

src/com/android/launcher3/folder/Folder.java

@@ -680,6 +680,7 @@ public class Folder extends AbstractFloatingView implements ClipPathView, DragSo
         closeOpenFolder(openFolder);
 
         mContent.bindItems(items);
+        mContent.setCanAnnouncePageDescriptionForFolder(true);
         centerAboutIcon();
         mItemsInvalidated = true;
         updateTextViewFocus();
@@ -813,6 +814,7 @@ public class Folder extends AbstractFloatingView implements ClipPathView, DragSo
     @Override
     protected void handleClose(boolean animate) {
         mIsOpen = false;
+        mContent.setCanAnnouncePageDescriptionForFolder(false);
 
         if (!animate && mCurrentAnimator != null && mCurrentAnimator.isRunning()) {
             mCurrentAnimator.cancel();

src/com/android/launcher3/folder/FolderPagedView.java

@@ -100,6 +100,8 @@ public class FolderPagedView extends PagedView<PageIndicatorDots> implements Cli
     // animating or is open.
     private boolean mViewsBound = false;
 
+    private boolean mCanAnnouncePageDescription;
+
     public FolderPagedView(Context context, AttributeSet attrs) {
         this(
                 context,
@@ -170,6 +172,19 @@ public class FolderPagedView extends PagedView<PageIndicatorDots> implements Cli
         mViewsBound = true;
     }
 
+    void setCanAnnouncePageDescriptionForFolder(boolean canAnnounce) {
+        mCanAnnouncePageDescription = canAnnounce;
+    }
+
+    private boolean canAnnouncePageDescriptionForFolder() {
+        return mCanAnnouncePageDescription;
+    }
+
+    @Override
+    protected boolean canAnnouncePageDescription() {
+        return super.canAnnouncePageDescription() && canAnnouncePageDescriptionForFolder();
+    }
+
     /**
      * Removes all the icons from the folder
      */