Question

假设我有两个表控制器相互连接。第一个表格显示来自我的国籍阵列[美国，亚洲，意大利]的信息。如果用户选择美国单元格，我希望美国项目数组中的四个项目显示在第二个视图控制器中。反之亦然，亚洲和意大利阵列，更具体地说是第二桌控制器中的亚洲和意大利物品阵列。

当第二个表显示取决于第一个表控制器中的用户选择时，如何在第二个控制器中显示特定的数组/项？

如有必要，可以改写。

Answer 1

TABLEONE：

class TableOne: UITableViewController {

    var countries = ["American", "Asian", "Italian"]
    var items = [["Mcdonalds", "BurgerKing", "Big Boy"], ["PFChangs", "China One Buffet"], ["Pizza House", "Pizza Hit", "Olive Garden", "Maggianos"]]

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

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

    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
        if (segue.identifier == "segueone")
        {
            //problem here with "sender"
            let cellIndexPath = self.tableView!.indexPathForCell(sender as UITableViewCell)
            if let unwrappedCellindexPath = cellIndexPath
            {
            var nextVC = (segue.destinationViewController as TableTwo)
            nextVC.items = items[unwrappedCellindexPath.row]
            }
        }
    }

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

    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        let selected = countries[indexPath.row]
        var cell = tableView.dequeueReusableCellWithIdentifier("cellone") as TableOneCell
        cell.tableonecelllabel.text = selected
        return cell

    }
}

表二：

class TableTwo: UITableViewController {

    var items: [String]?

    override func viewDidLoad() {
        super.viewDidLoad()

           }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()

    }

    override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        if let items = items
        {
            return items.count
        }
        else
        {
           return  0
        }
    }

    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        let selected = items![indexPath.row]
        var cell = tableView.dequeueReusableCellWithIdentifier("celltwo") as TableTwoCell
        cell.tablecelltwolabel.text = selected
        return cell

    }   
}

你应该正确修改celltwo的TABLEVIEWCELL标识符。

Answer 2

class TableOne: UITableViewController {

var countries = ["American", "Asian", "Italian"]
var items = [["Mcdonalds", "BurgerKing", "Big Boy"], ["PFChangs", "China One Buffet"], ["Pizza House", "Pizza Hit", "Olive Garden", "Maggianos"]]

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

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

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    if (segue.identifier == "segueone")
    {
        //problem here with "sender"
        let cellIndexPath = self.tableView!.indexPathForCell(sender as UITableViewCell)
        if let unwrappedCellindexPath = cellIndexPath
        {
        var nextVC = (segue.destinationViewController as TableTwo)
        nextVC.items = items[unwrappedCellindexPath.row]
        }
    }
}

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

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let selected = countries[indexPath.row]
    var cell = tableView.dequeueReusableCellWithIdentifier("cellone") as TableOneCell
    cell.tableonecelllabel.text = selected
    return cell

}
}

class TableTwo: UITableViewController {

var items: [String]?

override func viewDidLoad() {
    super.viewDidLoad()

       }

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()

}

override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    if let items = items
    {
        return items.count
    }
    else
    {
       return  0
    }
}

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let selected = items![indexPath.row]
    var cell = tableView.dequeueReusableCellWithIdentifier("celltwo") as TableTwoCell
    cell.tablecelltwolabel.text = selected
    return cell

}   
}

非常感谢Javier的代码和见解！

如何根据以前控制器的选择显示特定阵列

2 个答案: