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:
-
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.
这篇关于将数据从一个plist加载到两个TableViews的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!