以前遇到的需求（见标题），自己实现了一下，贴上代码。包含了完整请求过程，拿来党请拿走。
#pragma mark - 点击活动按钮，检测两个活动是否都是开放状态
-(void)checkIfActivitiesAreOn{
__weak typeof(self)weakSelf = self;
//信号量
dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
//创建全局并行
dispatch_group_t group = dispatch_group_create();
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
//网络请求一
dispatch_group_async(group, queue, ^{
[weakSelfpostActivityDailyInfoRequest:^{
dispatch_semaphore_signal(semaphore);
}];
});
//网络请求二
dispatch_group_async(group, queue, ^{
[weakSelfpostActivityWheelFortuneRequest:^{
dispatch_semaphore_signal(semaphore);
}];
});
dispatch_group_notify(group, queue, ^{
dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
dispatch_async(dispatch_get_main_queue(), ^{
if (weakSelf.treasureChestActivityIsOn && weakSelf.turnTableActivityIsOn) {
GBActivityMainView *view = [GBActivityMainView invitationUpdateAppView];
[viewshowFillInvitationUpdateAppView];
}
});
});
}
#pragma mark - 获取活动1
- (void)postActivityDailyInfoRequest:(void(^)())finish
{
// finish();
__weak typeof(self)weakSelf = self;
GBActivityDailyInfoRequest *req = [GBActivityDailyInfoRequest new];
req.token = [GBFacade sharedInstance].currentUserInfo.token;
[reqstartRequest:^(BOOLsuccess,HttpReqResult*result) {
if(success){
GBActivityDailyInfoDataInfo *info = result.resultObj[KEY_OBJECT];
if(info.status==1) {// 0未开始，1进行中，2已结束
weakSelf.treasureChestActivityIsOn=true;
}else{
weakSelf.treasureChestActivityIsOn=false;
}
}else{
weakSelf.treasureChestActivityIsOn = false;
}
finish();
}];
}
#pragma mark - 获取活动2
- (void)postActivityWheelFortuneRequest:(void(^)())finish
{
__weak typeof(self)weakSelf = self;
GBActivityWheelFortuneInfoRequest *req = [GBActivityWheelFortuneInfoRequest new];
req.token = [GBFacade sharedInstance].currentUserInfo.token;
[reqstartRequest:^(BOOLsuccess,HttpReqResult*result) {
if(success){
GBActivityWheelFortuneInfoDataInfo *info = result.resultObj[KEY_OBJECT];
if(info.status==1) {// 0未开始，1进行中，2已结束
weakSelf.turnTableActivityIsOn=true;
}else{
weakSelf.treasureChestActivityIsOn=false;
}
}else{
weakSelf.treasureChestActivityIsOn = false;
}
finish();
}];
}