oc弹出框显示提示消息

 - (void)ShowHUDTitle:(NSString *)title andDelay:(NSTimeInterval)delayTime
 {
     if (HUD) {
         [HUD removeFromSuperview];
         HUD = nil;
     }
     HUD = [[MBProgressHUD alloc] initWithView:self.view];
     [self.view addSubview:HUD];

     HUD.mode = MBProgressHUDModeText;
     HUD.labelText = title;
     HUD.margin = .f;
     [HUD show:YES];

     [HUD hide:YES afterDelay:delayTime];

 }