2 files changed, 33 insertions, 0 deletions
diff --git a/core/java/android/appwidget/AppWidgetManagerInternal.java b/core/java/android/appwidget/AppWidgetManagerInternal.java
index 5694ca860453..266e33af0e22 100644
--- a/core/java/android/appwidget/AppWidgetManagerInternal.java
+++ b/core/java/android/appwidget/AppWidgetManagerInternal.java
@@ -19,6 +19,8 @@ package android.appwidget;
 import android.annotation.Nullable;
 import android.util.ArraySet;
 
+import java.util.Set;
+
 /**
  * App widget manager local system service interface.
  *
@@ -42,4 +44,16 @@ public abstract class AppWidgetManagerInternal {
      * @param userId The user that is being unlocked.
      */
     public abstract void unlockUser(int userId);
+
+    /**
+     * Updates all widgets, applying changes to Runtime Resource Overlay affecting the specified
+     * target packages.
+     *
+     * @param packageNames The names of all target packages for which an overlay was modified
+     * @param userId The user for which overlay modifications occurred.
+     * @param updateFrameworkRes Whether or not an overlay affected the values of framework
+     *                           resources.
+     */
+    public abstract void applyResourceOverlaysToWidgets(Set<String> packageNames, int userId,
+            boolean updateFrameworkRes);
 }
diff --git a/core/java/android/widget/RemoteViews.java b/core/java/android/widget/RemoteViews.java
index e827f0a31bfd..91fc5a56d979 100644
--- a/core/java/android/widget/RemoteViews.java
+++ b/core/java/android/widget/RemoteViews.java
@@ -5824,6 +5824,25 @@ public class RemoteViews implements Parcelable, Filter {
         return false;
     }
 
+    /** @hide */
+    public void updateAppInfo(@NonNull ApplicationInfo info) {
+        if (mApplication != null && mApplication.sourceDir.equals(info.sourceDir)) {
+            // Overlay paths are generated against a particular version of an application.
+            // The overlays paths of a newly upgraded application are incompatible with the
+            // old version of the application.
+            mApplication = info;
+        }
+        if (hasSizedRemoteViews()) {
+            for (RemoteViews layout : mSizedRemoteViews) {
+                layout.updateAppInfo(info);
+            }
+        }
+        if (hasLandscapeAndPortraitLayouts()) {
+            mLandscape.updateAppInfo(info);
+            mPortrait.updateAppInfo(info);
+        }
+    }
+
     private Context getContextForResources(Context context) {
         if (mApplication != null) {
             if (context.getUserId() == UserHandle.getUserId(mApplication.uid)