我想从字典中创建一个表格视图。词典“威士忌”是由“WhiskyBuilder”的数据制作的，这是一类只有意义的属性。 “talisker”和“benRiach”这些属性仅作为示例。现在一切正常，但我不知道如何实现两个函数numberOfRowsInSection和cellForRowAtIndexPath。我想使用来自whiskeys-Dictionary的数据，并制作一个tableView，它使用第一个字母作为节头，字典的值作为节中的行。节标题工作正常，但我不知道我对行做错了什么，但我不能让它工作。有人能帮助我吗？
import UIKit
class WhiskyOverViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
@IBOutlet weak var tableView: UITableView!
var whiskyArray = [WhiskyBuilder]()
var stringArray: [String] {
return whiskyArray.map{$0.whiskyName!}
}
var whiskies = [Character: [String]]()
var talisker = WhiskyBuilder(name: "Talisker", age: "20", distillery: "Talisk Spring", designation: "Sauterne Cask", volume: "41", town: "Talisk", rating: "9", price: "95", specification: "Good smoky flavour")
var benRiach = WhiskyBuilder(name: "Ben Riach", age: "12", distillery: "Riach", designation: "Cherry finish", volume: "42", town: "Riach", rating: "8", price: "92", specification: "Smoky")
override func viewDidLoad() {
super.viewDidLoad()
tableView.dataSource = self
tableView.delegate = self
whiskyArray.append(talisker)
whiskyArray.append(benRiach)
tableView.rowHeight = 70
tableView.reloadData()
}
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
for entry in stringArray {
if whiskies[entry[entry.startIndex]] == nil {
whiskies[entry[entry.startIndex]] = [String]()
}
whiskies[entry[entry.startIndex]]!.append(entry)
}
return whiskies.keys.count
}
func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
let stringArray = whiskyArray.map{$0.whiskyName!}
let initials = stringArray.initials
// Keine Doppelten
let onlyInitials = initials.setValue
let sortedInitials = onlyInitials.sort {$0 < $1}
return sortedInitials[section]
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as! ProtoCell
let row = indexPath.row
cell.cellMainLabel!.text = whiskyArray[row].whiskyName
cell.cellDetailLabel!.text = whiskyArray[row].whiskyAge! + " years"
cell.cellDesignationLabel!.text = whiskyArray[row].whiskyDesignation
return cell
}
@IBAction func unwindToMainController(segue: UIStoryboardSegue) {
if let scr = segue.sourceViewController as? DataInsertController{
let newWhiskyName = scr.nameTextField!.text
let newWhiskyDesignation = scr.designationTextField!.text
let newWhiskyAge = scr.ageTextField!.text
let newWhiskyDistillery = scr.distilleryTextField!.text
let newWhiskyPrice = scr.priceTextField!.text
let newWhiskyTown = scr.townTextField!.text
let newWhiskyRating = scr.ratingTextField!.text
let newWhiskyVolume = scr.volumeTextField!.text
let newWhiskySpecification = scr.specificationTextView!.text
let newWhisky = WhiskyBuilder(name: newWhiskyName!, age:newWhiskyAge! , distillery:newWhiskyDistillery! , designation: newWhiskyDesignation!, volume: newWhiskyVolume!, town: newWhiskyTown!, rating: newWhiskyRating!, price: newWhiskyPrice!, specification: newWhiskySpecification!)
whiskyArray.append(newWhisky)
tableView.reloadData()
}
}
}
//MARK: - Extensions
extension Array where Element: StringLiteralConvertible {
var initials: [String] {
return map{String(($0 as! String).characters.prefix(1))}
}
}
extension Array where Element: Hashable {
var setValue: Set<Element> {
return Set<Element>(self)
}
}