commit e6f3fa47d626290dc46066d032ca4a39daffc45e
author Jon Miranda <jonmiranda@google.com> Mon Mar 04 09:14:40 2019 -0800
committer Jon Miranda <jonmiranda@google.com> Fri Mar 08 12:43:09 2019 -0800
tree 3d17008566f883301eb098660c2bafbeaf4808fb
parent 2ca0aa7076e696848bb3cc28102f0a1091a570ef

Fix bug where folder items preview remain in low res state.

- We update the ranks of all folder items after loading, to ensure there are
  no gaps caused by removed folder items. This also ensures that we load
  the high resolution icons for all preview items.
- FolderIconPreviewVerifier#setFolderInfo was not always called
- Init mGridSize with [1, 1] to prevent divide by zero error in case
  setFolderInfo is not called

Bug: 126268196
Change-Id: I856489968665a39303e2922c78cf90f2b3ee6ebb

src/com/android/launcher3/Launcher.java

diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index d820448..61cd2f1 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -488,11 +488,15 @@
 
     @Override
     public void invalidateParent(ItemInfo info) {
-        FolderIconPreviewVerifier verifier = new FolderIconPreviewVerifier(getDeviceProfile().inv);
-        if (verifier.isItemInPreview(info.rank) && (info.container >= 0)) {
+        if (info.container >= 0) {
             View folderIcon = getWorkspace().getHomescreenIconByItemId(info.container);
-            if (folderIcon != null) {
-                folderIcon.invalidate();
+            if (folderIcon instanceof FolderIcon && folderIcon.getTag() instanceof FolderInfo) {
+                FolderIconPreviewVerifier verifier =
+                        new FolderIconPreviewVerifier(getDeviceProfile().inv);
+                verifier.setFolderInfo((FolderInfo) folderIcon.getTag());
+                if (verifier.isItemInPreview(info.rank)) {
+                    folderIcon.invalidate();
+                }
             }
         }
     }