1 files changed, 11 insertions, 0 deletions
diff --git a/core/java/android/util/SparseArray.java b/core/java/android/util/SparseArray.java
index 3a0d1f5a6cc8..dae760f989f6 100644
--- a/core/java/android/util/SparseArray.java
+++ b/core/java/android/util/SparseArray.java
@@ -104,6 +104,17 @@ public class SparseArray<E> implements Cloneable {
     }
 
     /**
+     * Returns true if the key exists in the array. This is equivalent to
+     * {@link #indexOfKey(int)} >= 0.
+     *
+     * @param key Potential key in the mapping
+     * @return true if the key is defined in the mapping
+     */
+    public boolean contains(int key) {
+        return indexOfKey(key) >= 0;
+    }
+
+    /**
      * Gets the Object mapped from the specified key, or <code>null</code>
      * if no such mapping has been made.
      */