Swift 通知NSNotificationCenter use

NSNotificationCenter.defaultCenter().postNotificationName(ZYShowPhotoBrowserController, object: self, userInfo: ["bmiddle_pic": self.viewModel!.bmiddle_pic!, "indexPath": indexPath])

//注册通知
NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(HomeTableViewController.showBrowser(_:)), name: ZYShowPhotoBrowserController, object: nil)

deinit{
    //移除通知
    NSNotificationCenter.defaultCenter().removeObserver(self)
}

@objc private func showBrowser(notice: NSNotification)
{
     guard let pictures = notice.userInfo!["bmiddle_pic"] as? [NSURL] else{
            
          return
     }
     guard let index = notice.userInfo!["indexPath"] as? NSIndexPath else{
            
          return
    }
        
    let vc = ZYBrowserViewController(bmiddle_pic: pictures, indexPath: index)
    presentViewController(vc, animated: true, completion: nil)
}