ios - 如何更改UItableview的数据？

我的应用程序中有一个主菜单，其中有15个项目，每个项目都有20个项目的子项，我还将它们添加为图像数组(15个图像数组，类似餐厅菜单之类的东西)，因此，当用户单击其中的1个时应用程序会将主菜单项带到子菜单，我已经创建了主菜单表视图，问题在于子菜单，我必须为每个子菜单创建15个表视图!

有没有办法为子菜单创建1个表格视图并根据用户单击更改其数据

注意:我不想在表格视图中使用这些部分

任何想法将不胜感激

最佳答案

需要两个viewControllers和一个navigationController。一个用于主菜单，另一个用于子菜单。让它们成为mainMenuViewController和subMenuViewController。每个控制器都包含一个tableView。

创建一个包含15个子菜单数据的menuArray。每个子菜单都是一个数组。

在mainMenuViewController的didSelectRowAtIndexPath中，如果用户在tableView中选择了一行，则将该数据传递到与所选行相对应的menuArray中。

例如，如果用户选择第三行，
然后将menuArray [3]传递给subMenuViewController。这里indexPath.row = 3。

示例项目代码:

MenuViewController.swift:

import UIKit

class MenuViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {

    @IBOutlet weak var menuTableView: UITableView!
    var  imagesArray: NSArray = []
    var  menuArray: NSArray = []
    var  subMenuDataArray: NSArray = []

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

        menuTableView.registerClass(UITableViewCell.self, forCellReuseIdentifier: "cell")
        imagesArray = ["soups.jpg","salads.jpg","starters.jpg","pizzas.jpg","burgers.jpeg"]

        menuArray = ["Soups","Salads","Starters","Pizzas","Burgers"]

        subMenuDataArray = [["Cream of broccoli","Cream of celery","Cream of tomato","Etrog","Gazpacho"],
                            ["Tuna salad","Urnebes","Waldorf salad"],
                            ["Kakori Kebabs","Stir Fried Chilli Chicken"," Microwave Paneer Tikkas","Aloo and Dal ki Tikki","Cheese Balls","Bhuna Masala Chicken Wings"],
                            ["Cheese Pizzas","Chicken Pizzas","Masala Pizzas","Double Cheese Pizzas","Herbal Pizzas"],
                            ["Luger Burger","Le Pigeon Burger","The Company Burger","Dyer’s Deep-Fried Burger","The Lola Burger","Cheeseburger","Raw Steak Tartare Burger","Buckhorn Burger"]]

    }

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

    func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int{

        return imagesArray.count

    }

    func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat{
        return 70

    }

    func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell{

        let  menuTableViewCell = tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath)
        let cellImageView: UIImageView = UIImageView.init()
        cellImageView.frame = CGRectMake(10, 10, 50, 50)
        cellImageView.image =  UIImage(named: imagesArray.objectAtIndex(indexPath.row) as! String)
        menuTableViewCell.contentView.addSubview(cellImageView)

        let  menuLabel: UILabel = UILabel.init(frame: CGRectMake(70, 10, 200, 25))
        menuLabel.text = menuArray.objectAtIndex(indexPath.row) as? String
        menuTableViewCell.contentView.addSubview(menuLabel)


        return menuTableViewCell
    }

    func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath){

        let subMenuViewController: SubMenuViewController = storyboard!.instantiateViewControllerWithIdentifier("SubMenuViewControllerID") as! SubMenuViewController
        subMenuViewController.currentSubMenuArray = subMenuDataArray.objectAtIndex(indexPath.row) as! NSArray
        navigationController?.pushViewController(subMenuViewController, animated: true)


    }


}

SubMenuViewController.swift:

import UIKit

class SubMenuViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {

    @IBOutlet weak var subMenuTableView: UITableView!
    var  currentSubMenuArray: NSArray = []


    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.

         subMenuTableView.registerClass(UITableViewCell.self, forCellReuseIdentifier: "subCell")
    }

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

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

    func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell{
        let  subMenuTableViewCell = tableView.dequeueReusableCellWithIdentifier("subCell", forIndexPath: indexPath)
        let  subMenuLabel: UILabel = UILabel.init(frame: CGRectMake(10, 10, 250, 25))
        subMenuLabel.text = currentSubMenuArray.objectAtIndex(indexPath.row) as? String
        subMenuTableViewCell.contentView.addSubview(subMenuLabel)
        return subMenuTableViewCell
    }


}

故事板:



输出:



要测试示例项目，请使用我的GitHub帐户的以下链接:

https://github.com/k-sathireddy/MenuTableViewSample

关于ios - 如何更改UItableview的数据？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/39547673/