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copied!<p>I wrote a singleton that solves the problem of multiple connections by keeping a counter of what is happening (to avoid removing the status when a connection returns but another one is still active):</p> <p>The header file:</p> <pre><code>#import <Foundation/Foundation.h> @interface RMActivityIndicator : NSObject -(void)increaseActivity; -(void)decreaseActivity; -(void)noActivity; +(RMActivityIndicator *)sharedManager; @end </code></pre> <p>and implementation:</p> <pre><code>#import "RMActivityIndicator.h" @interface RMActivityIndicator () @property(nonatomic,assign) unsigned int activityCounter; @end @implementation RMActivityIndicator - (id)init { self = [super init]; if (self) { self.activityCounter = 0; } return self; } -(void)increaseActivity{ @synchronized(self) { self.activityCounter++; } [self updateActivity]; } -(void)decreaseActivity{ @synchronized(self) { if (self.activityCounter>0) self.activityCounter--; } [self updateActivity]; } -(void)noActivity{ self.activityCounter = 0; [self updateActivity]; } -(void)updateActivity{ UIApplication* app = [UIApplication sharedApplication]; app.networkActivityIndicatorVisible = (self.activityCounter>0); } #pragma mark - #pragma mark Singleton instance +(RMActivityIndicator *)sharedManager { static dispatch_once_t pred; static RMActivityIndicator *shared = nil; dispatch_once(&pred, ^{ shared = [[RMActivityIndicator alloc] init]; }); return shared; } @end </code></pre> <p>Example:</p> <pre><code> [[RMActivityIndicator sharedManager]increaseActivity]; [NSURLConnection sendAsynchronousRequest:urlRequest queue:self.networkReceiveProcessQueue completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) { [[RMActivityIndicator sharedManager]decreaseActivity]; } </code></pre>

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