iphone - 从superView中删除后如何显示MBProgressHUD。？

Question

我MBProgressHUD从superview. 当我第一次移除superview之后，我几乎播种但不可见。我的代码是

if(condition)  
{

    HUD.customView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"37x-Checkmark.png"]];

    [HUD bringSubviewToFront:HUD];

    HUD.mode = MBProgressHUDModeCustomView;

    HUD.labelText = @"Unfollowed";

    [HUD hide:YES afterDelay:0.5];

}

[HUD hide:YES];

[HUD removeFromSuperViewOnHide];

之后我再次展示它

[HUD show:YES];

但这种方法不显示它。请帮我