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[Issue #278] Adding thread safety to incrementing / decrementing and display of network activity indicator

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This commit is contained in:
Mattt Thompson 2012-04-04 16:31:52 -07:00
parent a0967f5d4f
commit 0470f4b29f
1 changed files with 17 additions and 7 deletions
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24
AFNetworking/AFNetworkActivityIndicatorManager.m
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@ -30,6 +30,7 @@ static NSTimeInterval const kAFNetworkActivityIndicatorInvisibilityDelay = 0.25;
@interface AFNetworkActivityIndicatorManager ()
@property (readwrite, nonatomic, assign) NSInteger activityCount;
@property (readwrite, nonatomic, retain) NSTimer *activityIndicatorVisibilityTimer;
@property (readwrite, nonatomic, retain) NSRecursiveLock *lock;
@property (readonly, getter = isNetworkActivityIndicatorVisible) BOOL networkActivityIndicatorVisible;
- (void)updateNetworkActivityIndicatorVisibility;
@ -38,6 +39,7 @@ static NSTimeInterval const kAFNetworkActivityIndicatorInvisibilityDelay = 0.25;
@implementation AFNetworkActivityIndicatorManager
@synthesize activityCount = _activityCount;
@synthesize activityIndicatorVisibilityTimer = _activityIndicatorVisibilityTimer;
@synthesize lock = _lock;
@synthesize enabled = _enabled;
@dynamic networkActivityIndicatorVisible;
@ -56,6 +58,8 @@ static NSTimeInterval const kAFNetworkActivityIndicatorInvisibilityDelay = 0.25;
if (!self) {
return nil;
}
self.lock = [[[NSRecursiveLock alloc] init] autorelease];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(incrementActivityCount) name:AFNetworkingOperationDidStartNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(decrementActivityCount) name:AFNetworkingOperationDidFinishNotification object:nil];
@ -69,10 +73,13 @@ static NSTimeInterval const kAFNetworkActivityIndicatorInvisibilityDelay = 0.25;
[_activityIndicatorVisibilityTimer invalidate];
[_activityIndicatorVisibilityTimer release]; _activityIndicatorVisibilityTimer = nil;
[_lock release];
[super dealloc];
}
- (void)setActivityCount:(NSInteger)activityCount {
[self.lock lock];
[self willChangeValueForKey:@"activityCount"];
_activityCount = MAX(activityCount, 0);
[self didChangeValueForKey:@"activityCount"];
@ -87,6 +94,7 @@ static NSTimeInterval const kAFNetworkActivityIndicatorInvisibilityDelay = 0.25;
[self updateNetworkActivityIndicatorVisibility];
}
}
[self.lock unlock];
}
- (BOOL)isNetworkActivityIndicatorVisible {
@ -94,19 +102,21 @@ static NSTimeInterval const kAFNetworkActivityIndicatorInvisibilityDelay = 0.25;
}
- (void)updateNetworkActivityIndicatorVisibility {
[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:[self isNetworkActivityIndicatorVisible]];
dispatch_async(dispatch_get_main_queue(), ^{
[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:[self isNetworkActivityIndicatorVisible]];
});
}
- (void)incrementActivityCount {
@synchronized(self) {
self.activityCount += 1;
}
[self.lock lock];
self.activityCount += 1;
[self.lock unlock];
}
- (void)decrementActivityCount {
@synchronized(self) {
self.activityCount -= 1;
}
[self.lock lock];
self.activityCount -= 1;
[self.lock unlock];
}
@end