iOS dispatch group dispatch_group_notify 多執行緒等待 多個數據請求處理 非同步請求
//經常有需求需要幾個資料請求，然後在資料請求結束之後統一處理，這時候就用到了dispatch group
- (void)loadData{
dispatch_queue_t queue =dispatch_get_global_queue(0,0);
group =dispatch_group_create();
//
[MBProgressHUDshowBlackHudTo:WINDOW];
dispatch_group_enter(group);
dispatch_group_async(group, queue, ^{
[selfqueryShareData];
});
dispatch_group_enter(group);
dispatch_group_async(group, queue, ^{
[self initData];
});
dispatch_group_notify(group,dispatch_get_main_queue(), ^{
[self updateUI:_model];
[MBProgressHUDhideHUDForView:WINDOWanimated:YES];
});
}
//獲取提現的資料
- (void
__weak typeof(self)weakSelf =self;
[API2 getWithDrawhandler:^(NSDictionary *dict,NSError *error) {
if (error) {
} else{
}
dispatch_group_leave(group);
}];
}
- (void)queryShareData {
__weak typeof(self)weakSelf =self;
[API2 getRedbagShare
if (error != nil) {
}else{
}
dispatch_group_leave(group);
}];
}