记录一下GCD网络请求的并发
// 创建信号量
dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
// 创建全局并行
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
dispatch_group_t group = dispatch_group_create();
dispatch_group_async(group, queue, ^{
// 请求一
[loginCode getUserInfoWithNick:nil andUserId:kUserId onSuc:^(id data) {
NSLog(@"yue");
dispatch_semaphore_signal(semaphore);
} andFail:^(NSError *error) {
}];
});
dispatch_group_async(group, queue, ^{
// 请求二
[CommodityViewModel getPriceTransformForIntegral:nil onSuccess:^(id data) {
NSLog(@"duihuan11");
dispatch_semaphore_signal(semaphore);
} onFailure:^(NSError *error) {
}];
});
dispatch_group_async(group, queue, ^{
// 请求三
[CommodityViewModel getPriceTransformForIntegral:nil onSuccess:^(id data) {
NSLog(@"duihuan22");
dispatch_semaphore_signal(semaphore);
} onFailure:^(NSError *error) {
}];
});
dispatch_group_notify(group, queue, ^{
// 三个请求对应三次信号等待
dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
//在这里 进行请求后的方法，回到主线程
dispatch_async(dispatch_get_main_queue(), ^{
//更新UI操作
});
});
