TabBar和NavBar随segue消失。如何通过NavController传递数据和/或在segue之后保留NavBar和TabBar？

Question

每当我使用Show Detail Segue将数据传递到另一个ViewController时，

我的选项卡栏和导航栏就会消失。我已设法传递相关数据以便读取已选择的单元格，因此我可以将.txt文件插入到最终ViewController的UITextField中。它有点像动态textView。我仍然希望能够在文章视图（最终vc）中选择不同的选项卡。有没有办法在segue之后将NavBar和Tabbed View Bar保留在最终的viewController中，或者是否有办法通过Nav Controller传递数据。或者，抱歉这将是最后一个，我是否使用准备segue并推送以前的NavController（不太确定如何做到这一点）。抱歉，我无法发布超过2个图像链接，因此代码量很大。谢谢

图片1：Layout of the Storyboard

这是来自rBVC.class（我的路障类别类文件），我有一个TableView：

class rBVC: UIViewController, UITableViewDelegate, UITableViewDataSource {

    @IBOutlet var rBTableView: UITableView!

    var rBLabels = ["General Info", "Drunk Driving", "Arrest", "Searches"]

    var rBIcons = [UIImage(named: "generalInfo"), UIImage(named: "drunkDriving"), UIImage(named: "arrests"), UIImage(named: "searches")]

    var valueToPass: String!

    override func viewDidLoad() {
        super.viewDidLoad()
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
    {
        return rBIcons.count
    }


    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

         let rBCell:UITableViewCell = tableView.dequeueReusableCell(withIdentifier: "rBCell", for: indexPath) as! rBCell
         rBCell.textLabel!.text = self.rBLabels[indexPath.row]
         rBCell.imageView!.image = self.rBIcons[indexPath.row]
         return rBCell
    }

    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        print("You selected cell #\(indexPath.row)!")
        //performSegue(withIdentifier: "rBASegue", sender: self)
        print(valueToPass)
    }

    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if (segue.identifier == "rBSegue"){
            /*let vcName = "rBTXT"
            let vC = storyboard?.instantiateViewController(withIdentifier: vcName)
            self.navigationController?.pushViewController(vC!, animated: true)*/
            let indexPath = self.rBTableView.indexPathForSelectedRow!
            let currentCell = self.rBTableView.cellForRow(at: indexPath) as! rBCell
            valueToPass = currentCell.textLabel?.text
            self.rBTableView.deselectRow(at: indexPath, animated: true)
            // initialize new view controller and cast it as your view controller
            let viewController = segue.destination as! rBAV
            // your new view controller should have property that will store passed value
            viewController.passedValue = valueToPass
            print("\(valueToPass)test")
        }
    }


}

图片4：This is where I have the problem of the disappearing bar's.

class rBAV: UIViewController {

    @IBOutlet var rBTV: UITextView!
    var passedValue: String?
    var rBArticle: String = ""

    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
    }

    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)

        if passedValue == "General Info"{
            rBArticle = "rBGI"
        }

        if passedValue == "Drunk Driving"{
            rBArticle = "rBDD"
        }

        if passedValue == "Arrest"{
            rBArticle = "rBA"
        }

        if passedValue == "Searches"{
            rBArticle = "rBS"
        }

        // Save data to file
        let fileName = "Test"
        let DocumentDirURL = try! FileManager.default.url(for: .documentDirectory, in: .userDomainMask, appropriateFor: nil, create: true)
        let fileURL = DocumentDirURL.appendingPathComponent(fileName).appendingPathExtension("txt")
        //print("FilePath: \(fileURL.path)")

         /*** Read from project txt file ***/

        // File location
        let fileURLProject = Bundle.main.path(forResource: rBArticle, ofType: "txt")
        // Read from the file
        var readStringProject = ""
        do {
            readStringProject = try String(contentsOfFile: fileURLProject!, encoding: String.Encoding.utf8)
        } catch let error as NSError {
            print("Failed reading from URL: \(fileURL), Error: " + error.localizedDescription)
        }
        rBTV.insertText(readStringProject)
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


}