From f9deb7ab5f20cca254dc8f9b5ae7a1f6b2aaf48c Mon Sep 17 00:00:00 2001
From: Yura Yaroshevich <yura.yaroshevich@gmail.com>
Date: Thu, 19 Apr 2018 17:32:53 +0300
Subject: [PATCH] Fixed comparator in AppRTCMobile for iOS

Bug: webrtc:9170
Change-Id: Ib2e27e26c9b5b1459066f59f100ae6cae87be820
Reviewed-on: https://webrtc-review.googlesource.com/71060
Reviewed-by: Magnus Jedvert <magjed@webrtc.org>
Commit-Queue: Magnus Jedvert <magjed@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22982}
---
 examples/objc/AppRTCMobile/ARDSettingsModel.m | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/examples/objc/AppRTCMobile/ARDSettingsModel.m b/examples/objc/AppRTCMobile/ARDSettingsModel.m
index ecd6111a8b..34a47a4989 100644
--- a/examples/objc/AppRTCMobile/ARDSettingsModel.m
+++ b/examples/objc/AppRTCMobile/ARDSettingsModel.m
@@ -39,7 +39,11 @@ NS_ASSUME_NONNULL_BEGIN
   NSArray<NSArray<NSNumber *> *> *sortedResolutions =
       [[resolutions allObjects] sortedArrayUsingComparator:^NSComparisonResult(
                                     NSArray<NSNumber *> *obj1, NSArray<NSNumber *> *obj2) {
-        return obj1.firstObject > obj2.firstObject;
+        NSComparisonResult cmp = [obj1.firstObject compare:obj2.firstObject];
+        if (cmp != NSOrderedSame) {
+          return cmp;
+        }
+        return [obj1.lastObject compare:obj2.lastObject];
       }];
 
   NSMutableArray<NSString *> *resolutionStrings = [[NSMutableArray<NSString *> alloc] init];