From 72e4de0950a6f5ae53f555ebeabb7557b97c2c42 Mon Sep 17 00:00:00 2001
From: Michael Kirk <michael.code@endoftheworl.de>
Date: Tue, 12 Jun 2018 10:43:31 -0400
Subject: [PATCH] Fix unresponsive interface after swipe on root VC

Don't start interactive pop gesture for root VC

// FREEBIE
---
 .../ViewControllers/OWSNavigationController.m            | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/SignalMessaging/ViewControllers/OWSNavigationController.m b/SignalMessaging/ViewControllers/OWSNavigationController.m
index 37bbf0abc..30cbb3f4c 100644
--- a/SignalMessaging/ViewControllers/OWSNavigationController.m
+++ b/SignalMessaging/ViewControllers/OWSNavigationController.m
@@ -91,12 +91,19 @@ NS_ASSUME_NONNULL_BEGIN
 // if a view has unsaved changes.
 - (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer
 {
+    OWSAssert(gestureRecognizer == self.interactivePopGestureRecognizer);
+
     UIViewController *topViewController = self.topViewController;
     if ([topViewController conformsToProtocol:@protocol(OWSNavigationView)]) {
         id<OWSNavigationView> navigationView = (id<OWSNavigationView>)topViewController;
         return ![navigationView shouldCancelNavigationBack];
     } else {
-        return YES;
+        UIViewController *rootViewController = self.viewControllers.firstObject;
+        if (topViewController == rootViewController) {
+            return NO;
+        } else {
+            return YES;
+        }
     }
 }