控制器添加控制器的view的方法

    一.addsubview

HYShareEwm *ewm=[[HYShareEwm alloc]initWithFrame:self.tabBarController.view.frame];//注意，声明添加的view 必须是全局

    [ewm initSubviews];

    [ewm addSubviewToSuperView:self.tabBarController.view];

二；present controler

//    HYShareEwm *ewm=[[HYShareEwm alloc]init];

//    

//    UIViewController *rootViewController = [[[UIApplication sharedApplication] keyWindow] rootViewController];

//    

//    if (IOS8)

//    {

//        ewm.modalPresentationStyle = UIModalPresentationOverCurrentContext;

//        [rootViewController presentViewController:ewm animated:NO completion:nil];

//    }

//    else

//    {

//        rootViewController.modalPresentationStyle = UIModalPresentationCurrentContext;

//        [rootViewController presentViewController:ewm animated:NO completion:nil];

//    }