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我剛開始學習Xcode和Swift,這是我在堆棧溢出中的第一個問題。所以請原諒我,如果我問一些微不足道的東西,或者我的問題是以不恰當的方式定義的。UITableView自定義單元格選項無法修改源變量
所以我的問題是以下幾點: 我想創建一個設置視圖,使用自定義單元格的TableView。 我有兩種類型的單元格:ValueCell(帶有兩個標籤)和SwitchCell(一個標籤和一個開關)。我有兩個單元的課程。我的UITableViewController包含填充tableview的輸入變量。我可以在一些掙扎之後管理。所以我的TableView填充了我所有的設置。 所以問題是以下幾點: 當我與它交互時,如何讓Switch修改原始值?
非常感謝您的幫助。
我SwitchCell類:
import Foundation
import UIKit
class SwitchCell: UITableViewCell {
//SettingCell with switch
@IBOutlet weak var name: UILabel!
@IBOutlet weak var value: UISwitch!
// I TRIED TO MAKE IT WORK, THIS IS CONNECTED TO THE SWITCH IN STORYBOARD
@IBAction func switchStateChanged(_ sender: UISwitch) {
if self.value.isOn {
print("\((self.name.text)!)")
print(self.value.isOn)
} else {
print("\((self.name.text)!)")
print(self.value.isOn)
}
}
}
這裏是BoolSetting類:
class BoolSetting: Setting {
var value: Bool
init (name: String, value: Bool) {
self.value = value
super.init(name: name, type: .Bool)
}
}
我SettingsListItems類:
class SettingsListItems: ListItems {
override init(){
super.init()
//MARK: Settings data structure
addSection(section: "Image options", item: [
IntSetting(name: "Resolution (dpi)", value: 1024),
IntSetting(name: "Resolution quality", value: 8),
IntSetting(name: "Zoom", value: 100)
])
addSection(section: "Capture options", item: [
BoolSetting(name: "Use flash", value:true),
IntSetting(name: "Number of images to take", value: 2),
FloatSetting(name: "Zero width (inch)", value: 0.405000),
IntSetting(name: "Zero width (pixel)", value: 414),
IntSetting(name: "Zero offset x (pixel)", value: 0),
IntSetting(name: "Zero offset y (pixel)", value: -500)
])
addSection(section: "Debug", item: [
BoolSetting(name: "Debug mode", value: false),
BoolSetting(name: "Save captured image", value: false)
])
}
}
最後這裏是SettingsViewController類:
import UIKit
class SettingsViewController: UITableViewController {
let mySettings = SettingsListItems()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
override func viewDidDisappear(_ animated: Bool) {
super.viewDidDisappear(true)
//Csak ellenőrzés, hogy változnak-e a setting értékek
for item in mySettings.items {
for s in item{
switch s.type{
case .Bool:
print((s as! BoolSetting).value)
case .Int:
print((s as! IntSetting).value)
case .Float:
print((s as! FloatSetting).value)
}
}
}
}
//hány section legyen a TableViewban
override func numberOfSections(in tableView: UITableView) -> Int {
return mySettings.sections.count
}
//Hány row legyen egy section-ön belül
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return mySettings.items[section].count
}
//Mi legyen a cellák tartalma
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
var cell: UITableViewCell
//egyszerűsítő declarations
let row = indexPath.row
let section = indexPath.section
let mySetting = mySettings.items[section] [row]
//Setting type választó
switch mySetting.type{
case .Bool:
cell = tableView.dequeueReusableCell(withIdentifier: "switchCell", for: indexPath)
(cell as! SwitchCell).name.text = (mySetting as! BoolSetting).name
(cell as! SwitchCell).value.isOn = (mySetting as! BoolSetting).value
//This was what I tried to do, but I think something is very wrong here
(cell as! SwitchCell).switchStateChanged(cell as! SwitchCell.value) {
(mySetting as! BoolSetting).value = (cell as! SwitchCell).value.isOn
}
case .Int:
cell = tableView.dequeueReusableCell(withIdentifier: "valueCell", for: indexPath)
(cell as! ValueCell).name.text = (mySetting as! IntSetting).name
(cell as! ValueCell).value.text = String((mySetting as! IntSetting).value)
case .Float:
cell = tableView.dequeueReusableCell(withIdentifier: "valueCell", for: indexPath)
(cell as! ValueCell).name.text = (mySetting as! FloatSetting).name
}
return cell
}
//Section címek megadása
override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return mySettings.sections[section]
}
}
在SwitchCell類
親愛的安德烈,感謝您的快速回復!它工作得很好。 –