diff --git a/core/java/android/util/LongSparseArray.java b/core/java/android/util/LongSparseArray.java
index 63e8c25d278b3..d6e116f21e3fe 100644
--- a/core/java/android/util/LongSparseArray.java
+++ b/core/java/android/util/LongSparseArray.java
@@ -39,6 +39,12 @@ import com.android.internal.util.ArrayUtils;
  * a single garbage collection step of all removed entries.  This garbage collection will
  * need to be performed at any time the array needs to be grown or the the map size or
  * entry values are retrieved.</p>
+ *
+ * <p>It is possible to iterate over the items in this container using
+ * {@link #keyAt(int)} and {@link #valueAt(int)}. Iterating over the keys using
+ * <code>keyAt(int)</code> with ascending values of the index will return the
+ * keys in ascending order, or the values corresponding to the keys in ascending
+ * order in the case of <code>valueAt(int)<code>.</p>
  */
 public class LongSparseArray<E> implements Cloneable {
     private static final Object DELETED = new Object();
@@ -238,6 +244,11 @@ public class LongSparseArray<E> implements Cloneable {
      * Given an index in the range <code>0...size()-1</code>, returns
      * the key from the <code>index</code>th key-value mapping that this
      * LongSparseArray stores.
+     *
+     * <p>The keys corresponding to indices in ascending order are guaranteed to
+     * be in ascending order, e.g., <code>keyAt(0)</code> will return the
+     * smallest key and <code>keyAt(size()-1)</code> will return the largest
+     * key.</p>
      */
     public long keyAt(int index) {
         if (mGarbage) {
@@ -251,6 +262,12 @@ public class LongSparseArray<E> implements Cloneable {
      * Given an index in the range <code>0...size()-1</code>, returns
      * the value from the <code>index</code>th key-value mapping that this
      * LongSparseArray stores.
+     *
+     * <p>The values corresponding to indices in ascending order are guaranteed
+     * to be associated with keys in ascending order, e.g.,
+     * <code>valueAt(0)</code> will return the value associated with the
+     * smallest key and <code>valueAt(size()-1)</code> will return the value
+     * associated with the largest key.</p>
      */
     @SuppressWarnings("unchecked")
     public E valueAt(int index) {
diff --git a/core/java/android/util/LongSparseLongArray.java b/core/java/android/util/LongSparseLongArray.java
index 133e41524ecd2..87d868b02b44a 100644
--- a/core/java/android/util/LongSparseLongArray.java
+++ b/core/java/android/util/LongSparseLongArray.java
@@ -35,6 +35,12 @@ import java.util.Arrays;
  * and deleting entries in the array.  For containers holding up to hundreds of items,
  * the performance difference is not significant, less than 50%.</p>
  *
+ * <p>It is possible to iterate over the items in this container using
+ * {@link #keyAt(int)} and {@link #valueAt(int)}. Iterating over the keys using
+ * <code>keyAt(int)</code> with ascending values of the index will return the
+ * keys in ascending order, or the values corresponding to the keys in ascending
+ * order in the case of <code>valueAt(int)<code>.</p>
+ *
  * @hide
  */
 public class LongSparseLongArray implements Cloneable {
@@ -163,6 +169,11 @@ public class LongSparseLongArray implements Cloneable {
      * Given an index in the range <code>0...size()-1</code>, returns
      * the key from the <code>index</code>th key-value mapping that this
      * SparseLongArray stores.
+     *
+     * <p>The keys corresponding to indices in ascending order are guaranteed to
+     * be in ascending order, e.g., <code>keyAt(0)</code> will return the
+     * smallest key and <code>keyAt(size()-1)</code> will return the largest
+     * key.</p>
      */
     public long keyAt(int index) {
         return mKeys[index];
@@ -172,6 +183,12 @@ public class LongSparseLongArray implements Cloneable {
      * Given an index in the range <code>0...size()-1</code>, returns
      * the value from the <code>index</code>th key-value mapping that this
      * SparseLongArray stores.
+     *
+     * <p>The values corresponding to indices in ascending order are guaranteed
+     * to be associated with keys in ascending order, e.g.,
+     * <code>valueAt(0)</code> will return the value associated with the
+     * smallest key and <code>valueAt(size()-1)</code> will return the value
+     * associated with the largest key.</p>
      */
     public long valueAt(int index) {
         return mValues[index];
diff --git a/core/java/android/util/SparseArray.java b/core/java/android/util/SparseArray.java
index 6e6609051aaec..6e168a8b4ccd7 100644
--- a/core/java/android/util/SparseArray.java
+++ b/core/java/android/util/SparseArray.java
@@ -39,6 +39,12 @@ import com.android.internal.util.ArrayUtils;
  * a single garbage collection step of all removed entries.  This garbage collection will
  * need to be performed at any time the array needs to be grown or the the map size or
  * entry values are retrieved.</p>
+ *
+ * <p>It is possible to iterate over the items in this container using
+ * {@link #keyAt(int)} and {@link #valueAt(int)}. Iterating over the keys using
+ * <code>keyAt(int)</code> with ascending values of the index will return the
+ * keys in ascending order, or the values corresponding to the keys in ascending
+ * order in the case of <code>valueAt(int)<code>.</p>
  */
 public class SparseArray<E> implements Cloneable {
     private static final Object DELETED = new Object();
@@ -251,6 +257,11 @@ public class SparseArray<E> implements Cloneable {
      * Given an index in the range <code>0...size()-1</code>, returns
      * the key from the <code>index</code>th key-value mapping that this
      * SparseArray stores.
+     *
+     * <p>The keys corresponding to indices in ascending order are guaranteed to
+     * be in ascending order, e.g., <code>keyAt(0)</code> will return the
+     * smallest key and <code>keyAt(size()-1)</code> will return the largest
+     * key.</p>
      */
     public int keyAt(int index) {
         if (mGarbage) {
@@ -264,6 +275,12 @@ public class SparseArray<E> implements Cloneable {
      * Given an index in the range <code>0...size()-1</code>, returns
      * the value from the <code>index</code>th key-value mapping that this
      * SparseArray stores.
+     *
+     * <p>The values corresponding to indices in ascending order are guaranteed
+     * to be associated with keys in ascending order, e.g.,
+     * <code>valueAt(0)</code> will return the value associated with the
+     * smallest key and <code>valueAt(size()-1)</code> will return the value
+     * associated with the largest key.</p>
      */
     @SuppressWarnings("unchecked")
     public E valueAt(int index) {
diff --git a/core/java/android/util/SparseBooleanArray.java b/core/java/android/util/SparseBooleanArray.java
index da196d78161d9..68487e3917101 100644
--- a/core/java/android/util/SparseBooleanArray.java
+++ b/core/java/android/util/SparseBooleanArray.java
@@ -33,6 +33,12 @@ import com.android.internal.util.ArrayUtils;
  * HashMap, since lookups require a binary search and adds and removes require inserting
  * and deleting entries in the array.  For containers holding up to hundreds of items,
  * the performance difference is not significant, less than 50%.</p>
+ *
+ * <p>It is possible to iterate over the items in this container using
+ * {@link #keyAt(int)} and {@link #valueAt(int)}. Iterating over the keys using
+ * <code>keyAt(int)</code> with ascending values of the index will return the
+ * keys in ascending order, or the values corresponding to the keys in ascending
+ * order in the case of <code>valueAt(int)<code>.</p>
  */
 public class SparseBooleanArray implements Cloneable {
     /**
@@ -159,16 +165,27 @@ public class SparseBooleanArray implements Cloneable {
     /**
      * Given an index in the range <code>0...size()-1</code>, returns
      * the key from the <code>index</code>th key-value mapping that this
-     * SparseBooleanArray stores.  
+     * SparseBooleanArray stores.
+     *
+     * <p>The keys corresponding to indices in ascending order are guaranteed to
+     * be in ascending order, e.g., <code>keyAt(0)</code> will return the
+     * smallest key and <code>keyAt(size()-1)</code> will return the largest
+     * key.</p>
      */
     public int keyAt(int index) {
         return mKeys[index];
     }
-    
+
     /**
      * Given an index in the range <code>0...size()-1</code>, returns
      * the value from the <code>index</code>th key-value mapping that this
-     * SparseBooleanArray stores.  
+     * SparseBooleanArray stores.
+     *
+     * <p>The values corresponding to indices in ascending order are guaranteed
+     * to be associated with keys in ascending order, e.g.,
+     * <code>valueAt(0)</code> will return the value associated with the
+     * smallest key and <code>valueAt(size()-1)</code> will return the value
+     * associated with the largest key.</p>
      */
     public boolean valueAt(int index) {
         return mValues[index];
diff --git a/core/java/android/util/SparseIntArray.java b/core/java/android/util/SparseIntArray.java
index c2bacb0906f3b..0835cb02e032d 100644
--- a/core/java/android/util/SparseIntArray.java
+++ b/core/java/android/util/SparseIntArray.java
@@ -32,6 +32,12 @@ import com.android.internal.util.ArrayUtils;
  * HashMap, since lookups require a binary search and adds and removes require inserting
  * and deleting entries in the array.  For containers holding up to hundreds of items,
  * the performance difference is not significant, less than 50%.</p>
+ *
+ * <p>It is possible to iterate over the items in this container using
+ * {@link #keyAt(int)} and {@link #valueAt(int)}. Iterating over the keys using
+ * <code>keyAt(int)</code> with ascending values of the index will return the
+ * keys in ascending order, or the values corresponding to the keys in ascending
+ * order in the case of <code>valueAt(int)<code>.</p>
  */
 public class SparseIntArray implements Cloneable {
     private int[] mKeys;
@@ -169,16 +175,27 @@ public class SparseIntArray implements Cloneable {
     /**
      * Given an index in the range <code>0...size()-1</code>, returns
      * the key from the <code>index</code>th key-value mapping that this
-     * SparseIntArray stores.  
+     * SparseIntArray stores.
+     *
+     * <p>The keys corresponding to indices in ascending order are guaranteed to
+     * be in ascending order, e.g., <code>keyAt(0)</code> will return the
+     * smallest key and <code>keyAt(size()-1)</code> will return the largest
+     * key.</p>
      */
     public int keyAt(int index) {
         return mKeys[index];
     }
-    
+
     /**
      * Given an index in the range <code>0...size()-1</code>, returns
      * the value from the <code>index</code>th key-value mapping that this
-     * SparseIntArray stores.  
+     * SparseIntArray stores.
+     *
+     * <p>The values corresponding to indices in ascending order are guaranteed
+     * to be associated with keys in ascending order, e.g.,
+     * <code>valueAt(0)</code> will return the value associated with the
+     * smallest key and <code>valueAt(size()-1)</code> will return the value
+     * associated with the largest key.</p>
      */
     public int valueAt(int index) {
         return mValues[index];
diff --git a/core/java/android/util/SparseLongArray.java b/core/java/android/util/SparseLongArray.java
index 182fd35c4fbed..62c1c0d9b6fa0 100644
--- a/core/java/android/util/SparseLongArray.java
+++ b/core/java/android/util/SparseLongArray.java
@@ -32,6 +32,12 @@ import com.android.internal.util.ArrayUtils;
  * HashMap, since lookups require a binary search and adds and removes require inserting
  * and deleting entries in the array.  For containers holding up to hundreds of items,
  * the performance difference is not significant, less than 50%.</p>
+ *
+ * <p>It is possible to iterate over the items in this container using
+ * {@link #keyAt(int)} and {@link #valueAt(int)}. Iterating over the keys using
+ * <code>keyAt(int)</code> with ascending values of the index will return the
+ * keys in ascending order, or the values corresponding to the keys in ascending
+ * order in the case of <code>valueAt(int)<code>.</p>
  */
 public class SparseLongArray implements Cloneable {
     private int[] mKeys;
@@ -159,6 +165,11 @@ public class SparseLongArray implements Cloneable {
      * Given an index in the range <code>0...size()-1</code>, returns
      * the key from the <code>index</code>th key-value mapping that this
      * SparseLongArray stores.
+     *
+     * <p>The keys corresponding to indices in ascending order are guaranteed to
+     * be in ascending order, e.g., <code>keyAt(0)</code> will return the
+     * smallest key and <code>keyAt(size()-1)</code> will return the largest
+     * key.</p>
      */
     public int keyAt(int index) {
         return mKeys[index];
@@ -168,6 +179,12 @@ public class SparseLongArray implements Cloneable {
      * Given an index in the range <code>0...size()-1</code>, returns
      * the value from the <code>index</code>th key-value mapping that this
      * SparseLongArray stores.
+     *
+     * <p>The values corresponding to indices in ascending order are guaranteed
+     * to be associated with keys in ascending order, e.g.,
+     * <code>valueAt(0)</code> will return the value associated with the
+     * smallest key and <code>valueAt(size()-1)</code> will return the value
+     * associated with the largest key.</p>
      */
     public long valueAt(int index) {
         return mValues[index];