为什么segues不起作用？无法切换视图

Question

**不太清楚为什么按钮计算时视图没有改变 被按下？ 可能的原因是什么？你能帮忙吗？

import UIKit
class CalculateViewController: UIViewController {
    @IBOutlet weak var heightLabel: UILabel!
    @IBOutlet weak var weightLabel: UILabel!
    @IBOutlet weak var heightSlider: UISlider!
    @IBOutlet weak var weightSlider: UISlider!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
    }

    @IBAction func heightSlided(_ sender: UISlider) {
        var currentHeightValue = sender.value
        let roundedHeightValue = String(format: "%.2f", currentHeightValue)
        heightLabel.text = "\(roundedHeightValue)m"
    }
    
    @IBAction func weightSlided(_ sender: UISlider) {
        var currentWeightValue = sender.value
        let roundedWeightValue = String(format: "%.0f", currentWeightValue)
        weightLabel.text = "\(roundedWeightValue)kg"
    }
    
    @IBAction func calculateBMI(_ sender: UIButton) {
        var squareOfHeight = Float(pow(heightSlider.value, 2.0))
        var BMI = weightSlider.value / squareOfHeight
        
        self.performSegue(withIdentifier: "goToResult", sender: self)
   
    }
    
}

Answer 1

试试这个..

让storyBoard: UIStoryboard = UIStoryboard(name: "Name 故事板”，捆绑：无） if let push = storyBoard.instantiateViewController(withIdentifier: "Name Storyboar ID") as? Name View Controller { self.navigationController?.pushViewController（推，动画：真） }