将数据从一个plist加载到两个TableViews [英] Load data from a plist to two TableViews

问题描述

从属性列表中加载某些数据时遇到麻烦.看一看… 这是我的directory.plist:

I am having some trouble to load some data from my property list. Take a look… This is my directory.plist:

我想在Main.storyboard上显示所有这些内容:

I wanna show all of this, right here on Main.storyboard:

但是键Position e Name将出现在第一个 TableViewController 上，而键Functionary，ImageFace和Phone则必须出现在第二个 TableViewController上.

But the keys Position e Name will appear on the first TableViewController and the keys Functionary, ImageFace and Phone have to appear on the second TableViewController.

为此，我做了这个:

1. 已将以下内容添加到 AppDelegate :

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    if let url = Bundle.main.url(forResource: "directory", withExtension: "plist"), let array = NSArray(contentsOf: url) as? [[String:Any]] {
        Shared.instance.employees = array.map{Employee(dictionary: $0)}
}
return true

像这样创建Struct:

struct EmployeeDetails {
    let functionary: String
    let imageFace: String
    let phone: String

    init(dictionary: [String: Any]) {
        self.functionary = (dictionary["Functionary"] as? String) ?? ""
        self.imageFace = (dictionary["ImageFace"] as? String) ?? ""
        self.phone = (dictionary["Phone"] as? String) ?? ""
    }
}

struct Employee {
    let position: String
    let name: String
    let details: [EmployeeDetails] // [String:Any]

    init(dictionary: [String: Any]) {
    self.position = (dictionary["Position"] as? String) ?? ""
    self.name = (dictionary["Name"] as? String) ?? ""

    let t = (dictionary["Details"] as? [Any]) ?? []
    self.details = t.map({EmployeeDetails(dictionary: $0 as! [String : Any])})
    }
}

struct Shared {
    static var instance = Shared()
    var employees: [Employee] = []
}

我的第一个TableViewController 就像这样:

My First TableViewController, is like this:

class Page1: UITableViewController {

override func viewDidLoad() {
    super.viewDidLoad()

    let anEmployee = Shared.instance.employees[1]

    print("Name:", anEmployee.name)
    print("Position:", anEmployee.position)

    anEmployee.details.forEach({

        print("Functionary:", $0.functionary)
        print("ImageFace:", $0.imageFace)
        print("Phone:", $0.phone)
    })
}

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

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

override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! TableViewCell1

        cell.nameLabel.text = Shared.instance.employees[indexPath.row].name
        cell.positionLabel.text = Shared.instance.employees[indexPath.row].position

        return cell
    }

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if let destination = segue.destination as? Page2,
        let indexPath = tableView.indexPathForSelectedRow {
        destination.newPage = Shared.instance.employees[indexPath.row].details[indexPath.row]
        tableView .deselectRow(at: indexPath, animated: true)
        }
    }
}

我的第二个TableViewController ，在这里:

My Second TableViewController, here:

var newPage: EmployeeDetails! //recently added

class Page2: UITableViewController {

var newPage: EmployeeDetails!

override func viewDidLoad() {
    super.viewDidLoad()

    if let theEmployee = newPage {
        self.title = theEmployee.name
    }
}

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

override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    if let theEmployee = newPage {
        return theEmployee.details.count
    }
return 0
}

override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! TableViewCell2

    if let theEmployee = newPage {

        cell.faceImage.image = theEmployee.details[indexPath.row].imageFace as? UIImage // did not work
        cell.functionary.text = theEmployee.details[indexPath.row].functionary
        cell.phoneLabel.text = theEmployee.details[indexPath.row].phone
    }
    return cell
    }
}

当我触摸第一个TableViewController的任何项目时，我看到第二个TableViewController完全是空的！调试区域显示它:

When I touch in any item of the first TableViewController, I see the second TableViewController totally empty! And the debug area shows it:

2017-03-28 17:16:28.456 plist sample[7138:425253] Unknown class Page2 in Interface Builder file.

推荐答案

根据您的plist结构:

According to your plist structure:

Shared.instance.employees[indexPath.row].details

details是字典数组.您将其视为字典.

details is an Array of Dictionaries. You are treating it as a Dictionary.

最初的问题是正确的……有多种解决方法(如您所见/完成).另一个选择可能会或可能不会有帮助:

the initial issue was correct... multiple ways to solve it (as you have seen / done). Another option, which may or may not be helpful:

struct EmployeeDetails {
    let functionary: String
    let imageFace: String
    let phone: String

    init(dictionary: [String: Any]) {
        self.functionary = (dictionary["Functionary"] as? String) ?? ""
        self.imageFace = (dictionary["ImageFace"] as? String) ?? ""
        self.phone = (dictionary["Phone"] as? String) ?? ""
    }
}
struct Employee {
    let position: String
    let name: String
    let details: [EmployeeDetails] // [String:Any]

    init(dictionary: [String: Any]) {
        self.position = (dictionary["Position"] as? String) ?? ""
        self.name = (dictionary["Name"] as? String) ?? ""

        let t = (dictionary["Details"] as? [Any]) ?? []
        self.details = t.map({EmployeeDetails(dictionary: $0 as! [String : Any])})
    }
}

struct Shared {
    static var instance = Shared()
    var employees: [Employee] = []
}

然后您可以制作原始照片:

you can then do your original:

    if let url = Bundle.main.url(forResource: "directory", withExtension: "plist"), let array = NSArray(contentsOf: url) as? [[String:Any]] {

        Shared.instance.employees = array.map{Employee(dictionary: $0)}

    }

，然后通过以下方式访问数据:

and then access the data via:

    let anEmployee = Shared.instance.employees[0]

    print("Name:", anEmployee.name)
    print("Position:", anEmployee.position)

    print("Detail 0 Functionary:", anEmployee.details[0].functionary)
    print("Detail 0 ImageFace:", anEmployee.details[0].imageFace)
    print("Detail 0 Phone:", anEmployee.details[0].phone)

    // or

    anEmployee.details.forEach({

        print("Functionary:", $0.functionary)
        print("ImageFace:", $0.imageFace)
        print("Phone:", $0.phone)

    })

例如.

有关工作示例，请参见 https://github.com/DonMag/SWPListData .

See https://github.com/DonMag/SWPListData for a working example.

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