Added an addAll to the ArrayAdapter

It behaves the same as ArrayList.addAll, since
the Object containing the Objects in the Adapter
is a List. Now you can add multiple Objects
at once, instead of looping over a Collection
and add all items one by one.
Unittests will be submitted to the cts project

Change-Id: I16f3286a8ca4cda7eb9f1a99c2aab1cc45b2550f

2 files changed, 68 insertions, 3 deletions

diff --git a/api/current.xml b/api/current.xml
index eb014513c1f9..e06996dcfb5b 100644
--- a/api/current.xml
+++ b/api/current.xml
@@ -181308,6 +181308,32 @@
 <parameter name="object" type="T">
 </parameter>
 </method>
+<method name="addAll"
+ return="void"
+ abstract="false"
+ native="false"
+ synchronized="false"
+ static="false"
+ final="false"
+ deprecated="not deprecated"
+ visibility="public"
+>
+<parameter name="collection" type="java.util.Collection&lt;? extends T&gt;">
+</parameter>
+</method>
+<method name="addAll"
+ return="void"
+ abstract="false"
+ native="false"
+ synchronized="false"
+ static="false"
+ final="false"
+ deprecated="not deprecated"
+ visibility="public"
+>
+<parameter name="items" type="T...">
+</parameter>
+</method>
 <method name="clear"
  return="void"
  abstract="false"
@@ -197251,7 +197277,7 @@
  deprecated="not deprecated"
  visibility="public"
 >
-<parameter name="arg0" type="T">
+<parameter name="t" type="T">
 </parameter>
 </method>
 </interface>
diff --git a/core/java/android/widget/ArrayAdapter.java b/core/java/android/widget/ArrayAdapter.java
index 32e55048ed18..03ada94d667e 100644
--- a/core/java/android/widget/ArrayAdapter.java
+++ b/core/java/android/widget/ArrayAdapter.java
@@ -24,6 +24,7 @@ import android.view.ViewGroup;
 
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collection;
 import java.util.List;
 import java.util.Comparator;
 import java.util.Collections;
@@ -83,7 +84,7 @@ public class ArrayAdapter<T> extends BaseAdapter implements Filterable {
      */
     private boolean mNotifyOnChange = true;
 
-    private Context mContext;    
+    private Context mContext;
 
     private ArrayList<T> mOriginalValues;
     private ArrayFilter mFilter;
@@ -181,6 +182,44 @@ public class ArrayAdapter<T> extends BaseAdapter implements Filterable {
     }
 
     /**
+     * Adds the specified Collection at the end of the array.
+     *
+     * @param collection The Collection to add at the end of the array.
+     */
+    public void addAll(Collection<? extends T> collection) {
+        if (mOriginalValues != null) {
+            synchronized (mLock) {
+                mOriginalValues.addAll(collection);
+                if (mNotifyOnChange) notifyDataSetChanged();
+            }
+        } else {
+            mObjects.addAll(collection);
+            if (mNotifyOnChange) notifyDataSetChanged();
+        }
+    }
+
+    /**
+     * Adds the specified items at the end of the array.
+     *
+     * @param items The items to add at the end of the array.
+     */
+    public void addAll(T ... items) {
+        if (mOriginalValues != null) {
+            synchronized (mLock) {
+                for (T item : items) {
+                    mOriginalValues.add(item);
+                }
+                if (mNotifyOnChange) notifyDataSetChanged();
+            }
+        } else {
+            for (T item : items) {
+                mObjects.add(item);
+            }
+            if (mNotifyOnChange) notifyDataSetChanged();
+        }
+    }
+
+    /**
      * Inserts the specified object at the specified index in the array.
      *
      * @param object The object to insert into the array.
@@ -236,7 +275,7 @@ public class ArrayAdapter<T> extends BaseAdapter implements Filterable {
      */
     public void sort(Comparator<? super T> comparator) {
         Collections.sort(mObjects, comparator);
-        if (mNotifyOnChange) notifyDataSetChanged();        
+        if (mNotifyOnChange) notifyDataSetChanged();
     }
 
     /**