How can I do things when two asynchronous requests are finished?

Question

How can I do things when two asynchronous requests are finished ?

perform the asynchronous initRequest and asynchronous refreshHeader, they finished after I perform the requestEnd method.

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    [self initRequest];
    [self requestEnd];
}

- (void)initRequest{
    [GBCompanyRequest requestWithSuccess:^(EvaluationAverage *evaluationAverage) {

    } failure:^(NSString *message) {

    }];

    [self refreshHeader];
}

- (void)refreshHeader{
    [GBCompanyEvaluationRequest requestWithSuccess:^(EvaluationAverage *evaluationAverage) {

    } failure:^(NSString *message) {

    }];
}

- (void)requestEnd{
    NSLog(@"How can I do things when two asynchronous requests are finished");
}

@end

Search for "dispatch_group" or "completion handler". – shallowThought Oct 14 '17 at 10:10 — shallowThought, Oct 14 '17 at 10:10

score 1 · Answer 1 · answered Oct 14 '17 at 08:59

1

My suggestion is use dispatch_group_t

dispatch_group_t : Generally use for call/execute group of synchronously or asynchronously method/block and it will notify you after all the method/block execution are done.

For more information about how to use, you can read this Q/A.

Waiting until two async blocks are executed before starting another block

answered Oct 14 '17 at 08:59

iPatel

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But asynchronous request in the other method. I do not know how to use the dispatch_group_t to do it. – Sunny_Ken Oct 14 '17 at 09:39
That's I added 2 links so you can read and add it to your app – iPatel Oct 14 '17 at 09:47

How can I do things when two asynchronous requests are finished?

1 Answers1