Question

我面临代表问题。下面是UITableViewController类型的DemoTable类

import Foundation
import UIKit

protocol DashboardControllerDelegate{
    func companySelected()
}


class DemoTable: UITableViewController
{
    var delegate : DashboardControllerDelegate?
    var arr_string = [String]()

    init(array: [String])
    {
        arr_string = array
        super.init(nibName: nil, bundle: nil)
    }

    required init?(coder aDecoder: NSCoder)
    {
        fatalError("init(coder:) has not been implemented")
    }


    override func numberOfSections(in tableView: UITableView) -> Int
    {
        return 1
    }

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

    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)
    { 
        delegate?.companySelected()
    }

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

    {
        var cell = tableView.dequeueReusableCell(withIdentifier: "Cell")

        if cell == nil {
            cell = UITableViewCell(style: .default, reuseIdentifier: "Cell")
            cell?.frame(forAlignmentRect: CGRect(x: 0, y: 0, width: tableView.frame.size.width, height: 30))
        }

        cell?.textLabel?.text = arr_string[indexPath.row]

        return cell!

    }
}

这是控制器类

import UIKit

class ViewController: UIViewController, DashboardControllerDelegate 
{          
    var dataSourceTable:DemoTable?

    override func viewDidLoad()
    {
        super.viewDidLoad()

        let fruitList = UITableView(frame: CGRect(x: 0, y: 0, width: view.frame.width, height: view.frame.height * 0.9))
        fruitList.backgroundColor = UIColor.white

        let arr_Fruits = ["Mango", "Papaya", "Graps", "Apple"]

        self.dataSourceTable = DemoTable(array: arr_Fruits)
        fruitList.dataSource = self.dataSourceTable
        fruitList.delegate = self.dataSourceTable
        view.addSubview(fruitList)
    }

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

    func companySelected()
    {
        print("Selected")
    }
}

问题是在ViewController类中未调用的委托函数“companySelected”。帮助将是欣赏： - ）

Answer 1

我得到了答案。我必须添加

self.dataSourceTable?.delegate = self

在viewDidLoad（）

中

代表是零（斯威夫特3）

1 个答案: