用多线程实现的顺序上传下载

来源：互联网发布：可以追里番的软件编辑：程序博客网时间：2024/06/05 08:39

利用线程组保证顺序上传下载, 希望能帮助到一些人对GCD的学习, 也请大神指点.

 NSMutableArray *arr = [NSMutableArray arrayWithArray:@[@"1", @"2", @"3", @"4", @"5"]];       dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);       dispatch_async(queue, ^{        dispatch_group_t group = dispatch_group_create();               dispatch_queue_t sequalQueue = dispatch_queue_create("com.JC.queue", NULL);               __block NSString *cc = @"";               for (int i = 0; i < arr.count; i++) {            dispatch_group_async(group, sequalQueue, ^{                               cc = [NSString stringWithFormat:@"%@+%@", cc, arr[i]];                NSLog(@"%@, %d", cc, i);                           });        }                             dispatch_group_notify(group, dispatch_get_main_queue(), ^{            NSLog(@"~%@~", cc);        });    });

dome:https://github.com/ConnorForGIT/CJDownloadManager

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