From e3e53544e6b248018adb3e8e5b46728e6e02edbe Mon Sep 17 00:00:00 2001
From: Albert Martin <albert@imor.tl>
Date: Tue, 15 Aug 2017 15:36:46 -0500
Subject: [PATCH] prevent UIApplication methods from being called on background
 thread

---
 ios/RNFetchBlobNetwork.m | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/ios/RNFetchBlobNetwork.m b/ios/RNFetchBlobNetwork.m
index 7be57fc59..2e643cd09 100644
--- a/ios/RNFetchBlobNetwork.m
+++ b/ios/RNFetchBlobNetwork.m
@@ -245,8 +245,11 @@ - (void) sendRequest:(__weak NSDictionary  * _Nullable )options
     [task resume];
 
     // network status indicator
-    if([[options objectForKey:CONFIG_INDICATOR] boolValue] == YES)
-        [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];
+    if ([[options objectForKey:CONFIG_INDICATOR] boolValue] == YES) {
+        dispatch_async(dispatch_get_main_queue(), ^{
+            [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];
+        });
+    }
     __block UIApplication * app = [UIApplication sharedApplication];
 
 }
@@ -483,7 +486,9 @@ - (void) URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didCom
     NSString * respStr = [NSNull null];
     NSString * rnfbRespType = @"";
 
-    [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
+    dispatch_async(dispatch_get_main_queue(), ^{
+        [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
+    });
 
     if(respInfo == nil)
     {