commit 4dfe1ff50a9aaee99983e65cdaededf8b7e7ef81
author Chiachang Wang <chiachangwang@google.com> Wed Feb 24 17:54:33 2021 +0800
committer Chiachang Wang <chiachangwang@google.com> Thu Feb 25 11:55:51 2021 +0800
tree a7ce4cdb8ae455f37b0b579ac321767c915d4433
parent 3c9f315167fcded480d0a3a1be4e45563c761272

Add helper function to check if collection is empty

Bug: 172183305
Test: m
Change-Id: I3b7b415d39f8a1fffb43ace58772da554412d25e

staticlibs/framework/com/android/net/module/util/CollectionUtils.java

diff --git a/staticlibs/framework/com/android/net/module/util/CollectionUtils.java b/staticlibs/framework/com/android/net/module/util/CollectionUtils.java
index e5bb58d..cd1d35e 100644
--- a/staticlibs/framework/com/android/net/module/util/CollectionUtils.java
+++ b/staticlibs/framework/com/android/net/module/util/CollectionUtils.java
@@ -38,6 +38,13 @@
     }
 
     /**
+     * @return True if the collection is null or 0-length.
+     */
+    public static <T> boolean isEmpty(@Nullable Collection<T> collection) {
+        return collection == null || collection.isEmpty();
+    }
+
+    /**
      * Returns an int array from the given Integer list.
      */
     @NonNull