Check NSOperationQueue is completed or Not?

When we put lots of images to NSOperationQueue then we want to check our queue is completed or not.After completion of queue you want to perform some tasks (like you want to load another page).

 (void) observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object
                         change:(NSDictionary *)change context:(void *)context{
    
    
    if (object == self.queue && [keyPath isEqualToString:@"operations"]) {
        if ([self.queue.operations count] == 0) {
         }
    }
    else {
        [super observeValueForKeyPath:keyPath ofObject:object
                               change:change context:context];
    }
}

(void) observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object

change:(NSDictionary *)change context:(void *)context{

if (object == self.queue && [keyPath isEqualToString:@"operations"]) {

if ([self.queue.operations count] == 0) {

}

else {

[super observeValueForKeyPath:keyPath ofObject:object

change:change context:context];

}

bhavuk chawla

14 Dec, 2016
Updated by - bhavuk chawla
9 Sep, 2016
Created by - bhavuk chawla

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Check NSOperationQueue is completed or Not?

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