1 files changed, 7 insertions, 0 deletions
diff --git a/core/java/android/provider/SettingsStringUtil.java b/core/java/android/provider/SettingsStringUtil.java
index 3dfedea18323..a3dc9471a1d0 100644
--- a/core/java/android/provider/SettingsStringUtil.java
+++ b/core/java/android/provider/SettingsStringUtil.java
@@ -23,6 +23,7 @@ import android.text.TextUtils;
 
 import com.android.internal.util.ArrayUtils;
 
+import java.util.Collection;
 import java.util.HashSet;
 import java.util.Iterator;
 import java.util.function.Function;
@@ -80,6 +81,12 @@ public class SettingsStringUtil {
                 return s;
             }
 
+            public static String addAll(String delimitedElements, Collection<String> elements) {
+                final ColonDelimitedSet<String> set
+                        = new ColonDelimitedSet.OfStrings(delimitedElements);
+                return set.addAll(elements) ? set.toString() : delimitedElements;
+            }
+
             public static String add(String delimitedElements, String element) {
                 final ColonDelimitedSet<String> set
                         = new ColonDelimitedSet.OfStrings(delimitedElements);