Question

我有两个ViewControllers，一个包含UITextView，另一个包含UITableView。我希望我的应用程序将包含UITableView的SecondViewController中所选行的数据传递给第一个ViewController中的UITextView，具体取决于用户选择的行。我在firstViewController中使用下面的代码（只是为了给你一些历史记录，我在firstViewController中有一个UITextView，用户可以选择输入自定义值或执行longpressgesture然后弹出窗口显示包含第二个ViewController中的UITableView。我想要实现的是当从包含UItableView的popoverView中选择一行时，popoverView将关闭，并且表中突出显示的值将显示在firstViewController的UITextView中：

    class ViewController: UIViewController, UITextViewDelegate, UIPopoverPresentationControllerDelegate {

        @IBOutlet weak var indicativeDesignWorkingLifeTextView: UITextView! 

        var textInsideIndicativeDesignWorkingLifeTextView: String? = nil

     override func viewDidLoad() {

            super.viewDidLoad()

            // Do any additional setup after loading the view, typically from a nib.

    indicativeDesignWorkingLifeTextView.text = textInsideIndicativeDesignWorkingLifeTextView

indicativeDesignWorkingLifeTextView.attributedText = placeholderTextInIndicativeDesignWorkingLifeTextView

        }

    }

以及secondViewController中的以下代码：

@objc func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {

        func prepare(for segue: UIStoryboardSegue, sender: UITableViewCell?) {

            let toFirstViewController = segue.destination as! ViewController

            // Pass the selected object to the new view controller.

            if let indexPath = self.indicativeDesignWorkingLifeTable.indexPathForSelectedRow {

                let selectedRow = years[indexPath.row]

                toFirstViewController.textInsideIndicativeDesignWorkingLifeTextView = selectedRow

            }

            }

}

但是，当我运行模拟器并从表中选择一行时，firstConController中的UITextView内部没有任何反应？所有发生的事情都是显示firstViewController。非常感谢任何帮助。

谢谢，沙迪。

Answer 1

将您的代码更新为：

@objc func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {

        self.performSegue(withIdentifier: "<set identifier String>", sender: indexPath)

}


func prepare(for segue: UIStoryboardSegue, sender:Any?) {

            let toFirstViewController = segue.destination as! ViewController

            // Pass the selected object to the new view controller.

            if let indexPath = sender as? IndexPath {
                print("indexPath - \(indexPath)")
                let selectedRow = years[indexPath.row]
                 print("selectedRow - \(selectedRow)")
                toFirstViewController.textInsideIndicativeDesignWorkingLifeTextView = selectedRow

            }

}

根据选择的行，将数据从UITableView传递到另一个ViewController

1 个答案: