1 files changed, 20 insertions, 1 deletions
diff --git a/core/java/android/util/SparseSetArray.java b/core/java/android/util/SparseSetArray.java
index f5025f7a9e99..f85280f0264b 100644
--- a/core/java/android/util/SparseSetArray.java
+++ b/core/java/android/util/SparseSetArray.java
@@ -15,15 +15,34 @@
  */
 package android.util;
 
+import android.annotation.NonNull;
+
 /**
  * A sparse array of ArraySets, which is suitable to hold userid->packages association.
  *
  * @hide
  */
 public class SparseSetArray<T> {
-    private final SparseArray<ArraySet<T>> mData = new SparseArray<>();
+    private final SparseArray<ArraySet<T>> mData;
 
     public SparseSetArray() {
+        mData = new SparseArray<>();
+    }
+
+    /**
+     * Copy constructor
+     */
+    public SparseSetArray(@NonNull SparseSetArray<T> src) {
+        final int arraySize = src.size();
+        mData = new SparseArray<>(arraySize);
+        for (int i = 0; i < arraySize; i++) {
+            final int key = src.keyAt(i);
+            final ArraySet<T> set = src.get(key);
+            final int setSize = set.size();
+            for (int j = 0; j < setSize; j++) {
+                add(key, set.valueAt(j));
+            }
+        }
     }
 
     /**