Use MAX to constrain _activityCount to non-negative numbers

2012-09-25 07:15:02 -07:00 · 2012-09-25 07:15:02 -07:00 · 68adeab768
commit 68adeab768
parent e35a88fdef
1 changed files with 1 additions and 4 deletions
--- a/AFNetworking/AFNetworkActivityIndicatorManager.m
+++ b/AFNetworking/AFNetworkActivityIndicatorManager.m
@ -118,12 +118,9 @@ static NSTimeInterval const kAFNetworkActivityIndicatorInvisibilityDelay = 0.17;
 }

 - (void)decrementActivityCount {
-    if (_activityCount == 0) {
-        return;
-    }
    [self willChangeValueForKey:@"activityCount"];
 	@synchronized(self) {
-		_activityCount--;
+		_activityCount = MAX(_activityCount - 1, 0);
 	}
    [self didChangeValueForKey:@"activityCount"];
    [self updateNetworkActivityIndicatorVisibilityDelayed];