05 2018 档案

ios 用信号量控制多个异步网络请求
摘要：dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);//创建信号量 dispatch_queue_t queue = dispatch_get_global_queue(0, 0); //创建队列 dispatch_group_t group = dispatch_group_create(); ... 阅读全文
posted @ 2018-05-18 15:21 YuFly 阅读(1230) 评论(0) 推荐(0)