From 6968dbab1706046d9b505d5ac25c7d2d0aeaa541 Mon Sep 17 00:00:00 2001
From: Michael Kirk <michael@signal.org>
Date: Thu, 25 Oct 2018 09:12:20 -0600
Subject: [PATCH] Update UIDevice on main thread

---
 SignalMessaging/utils/ProximityMonitoringManager.swift | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/SignalMessaging/utils/ProximityMonitoringManager.swift b/SignalMessaging/utils/ProximityMonitoringManager.swift
index 7d997a74c..619ae6cab 100644
--- a/SignalMessaging/utils/ProximityMonitoringManager.swift
+++ b/SignalMessaging/utils/ProximityMonitoringManager.swift
@@ -46,10 +46,14 @@ public class OWSProximityMonitoringManagerImpl: NSObject, OWSProximityMonitoring
         lifetimes = lifetimes.filter { $0.value != nil }
         if lifetimes.isEmpty {
             Logger.debug("disabling proximity monitoring")
-            device.isProximityMonitoringEnabled = false
+            DispatchQueue.main.async {
+                self.device.isProximityMonitoringEnabled = false
+            }
         } else {
             Logger.debug("enabling proximity monitoring for lifetimes: \(lifetimes)")
-            device.isProximityMonitoringEnabled = true
+            DispatchQueue.main.async {
+                self.device.isProximityMonitoringEnabled = true
+            }
         }
     }
 }