I am in the process of programming a small app to calculate exposure times.
I have a UiViewController to set the apertures of one Stop, halfStop and thridStop via three UiSwitches.
If you set one UiSwitch to .isON == true, the other two switch to .isOn == false.This also works perfectly.
I also have a button that can be used to return to the previous ViewController.UiSwitch states should be saved with a tap on this button.
If one of the switches is selected, the corresponding array should be displayed in the PickerView.
This works perfectly with a single array, but I can't manage with several.
And that's the problem, I've read a lot here and tried a lot, but it just doesn't work.
Here is the codes as I have written it so far:
ApertureModel:
class ApertureModel { var aperture: String var f: Double init(_aperture: String, _f: Double) { self.aperture = _aperture self.f = _f }}Aperture Data
import Foundationclass ApertureData { class func DataOneStop() -> [ApertureModel] { var dataAperture = [ApertureModel]() dataAperture.append(ApertureModel(_aperture: "f:0.5", _f: 0.5)) dataAperture.append(ApertureModel(_aperture: "f:0.7", _f: 0.7)) dataAperture.append(ApertureModel(_aperture: "f:1.0", _f: 1.0)) dataAperture.append(ApertureModel(_aperture: "f:1.1", _f: 1.1)) dataAperture.append(ApertureModel(_aperture: "f:1.2", _f: 1.2)) dataAperture.append(ApertureModel(_aperture: "f:1.4", _f: 1.4)) dataAperture.append(ApertureModel(_aperture: "f:1.6", _f: 1.6)) dataAperture.append(ApertureModel(_aperture: "f:1.8", _f: 1.8)) dataAperture.append(ApertureModel(_aperture: "f:2.0", _f: 2.0)) dataAperture.append(ApertureModel(_aperture: "f:2.2", _f: 2.2)) dataAperture.append(ApertureModel(_aperture: "f:2.5", _f: 2.5)) dataAperture.append(ApertureModel(_aperture: "f:2.8", _f: 2.8)) dataAperture.append(ApertureModel(_aperture: "f:3.2", _f: 3.2)) dataAperture.append(ApertureModel(_aperture: "f:4.0", _f: 4.0)) dataAperture.append(ApertureModel(_aperture: "f:4.5", _f: 4.5)) dataAperture.append(ApertureModel(_aperture: "f:5.0", _f: 5.0)) dataAperture.append(ApertureModel(_aperture: "f:5.6", _f: 5.6)) dataAperture.append(ApertureModel(_aperture: "f:6.3", _f: 6.3)) dataAperture.append(ApertureModel(_aperture: "f:7.2", _f: 7.2)) dataAperture.append(ApertureModel(_aperture: "f:8.0", _f: 8.0)) dataAperture.append(ApertureModel(_aperture: "f:9.0", _f: 9.0)) dataAperture.append(ApertureModel(_aperture: "f:10", _f: 10.0)) dataAperture.append(ApertureModel(_aperture: "f:11", _f: 11.0)) dataAperture.append(ApertureModel(_aperture: "f:13", _f: 13.0)) dataAperture.append(ApertureModel(_aperture: "f:14", _f: 14.0)) dataAperture.append(ApertureModel(_aperture: "f:16", _f: 16.0)) dataAperture.append(ApertureModel(_aperture: "f:18", _f: 18.0)) dataAperture.append(ApertureModel(_aperture: "f:20", _f: 20.0)) dataAperture.append(ApertureModel(_aperture: "f:22", _f: 22.0)) dataAperture.append(ApertureModel(_aperture: "f:25", _f: 22.0)) dataAperture.append(ApertureModel(_aperture: "f:29", _f: 29.0)) dataAperture.append(ApertureModel(_aperture: "f:32", _f: 32.0)) dataAperture.append(ApertureModel(_aperture: "f:36", _f: 36.0)) dataAperture.append(ApertureModel(_aperture: "f:40", _f: 40.0)) dataAperture.append(ApertureModel(_aperture: "f:45", _f: 45.0)) dataAperture.append(ApertureModel(_aperture: "f:64", _f: 64.0)) dataAperture.append(ApertureModel(_aperture: "f:90", _f: 90.0)) dataAperture.append(ApertureModel(_aperture: "f:128", _f: 128.0)) dataAperture.append(ApertureModel(_aperture: "f:256", _f: 256.0)) dataAperture.append(ApertureModel(_aperture: "f:512", _f: 512.0)) dataAperture.append(ApertureModel(_aperture: "f:1024", _f: 1024.0)) return dataAperture } class func DataHalfStop() -> [ApertureModel] { var dataAperture = [ApertureModel]() dataAperture.append(ApertureModel(_aperture: "f/1.0", _f: 1.0)) dataAperture.append(ApertureModel(_aperture: "f/1.2", _f: 1.2)) dataAperture.append(ApertureModel(_aperture: "f/1.4", _f: 1.4)) dataAperture.append(ApertureModel(_aperture: "f/1.7", _f: 1.7)) dataAperture.append(ApertureModel(_aperture: "f/2.0", _f: 2.0)) dataAperture.append(ApertureModel(_aperture: "f/2.4", _f: 2.4)) dataAperture.append(ApertureModel(_aperture: "f/2.8", _f: 2.8)) dataAperture.append(ApertureModel(_aperture: "f/3.3", _f: 3.3)) dataAperture.append(ApertureModel(_aperture: "f/4.0", _f: 4.0)) dataAperture.append(ApertureModel(_aperture: "f/4.8", _f: 4.8)) dataAperture.append(ApertureModel(_aperture: "f/5.6", _f: 5.6)) dataAperture.append(ApertureModel(_aperture: "f/6.7", _f: 6.7)) dataAperture.append(ApertureModel(_aperture: "f/8.0", _f: 8.0)) dataAperture.append(ApertureModel(_aperture: "f/9.5", _f: 9.5)) dataAperture.append(ApertureModel(_aperture: "f/10", _f: 10.0)) dataAperture.append(ApertureModel(_aperture: "f/11", _f: 11.0)) dataAperture.append(ApertureModel(_aperture: "f/14", _f: 14.0)) dataAperture.append(ApertureModel(_aperture: "f/16", _f: 16.0)) dataAperture.append(ApertureModel(_aperture: "f/19", _f: 19.0)) dataAperture.append(ApertureModel(_aperture: "f/22", _f: 22.0)) dataAperture.append(ApertureModel(_aperture: "f/27", _f: 27.0)) dataAperture.append(ApertureModel(_aperture: "f/32", _f: 32.0)) dataAperture.append(ApertureModel(_aperture: "f/38", _f: 38.0)) dataAperture.append(ApertureModel(_aperture: "f/45", _f: 45.0)) dataAperture.append(ApertureModel(_aperture: "f/54", _f: 54.0)) dataAperture.append(ApertureModel(_aperture: "f/64", _f: 64.0)) dataAperture.append(ApertureModel(_aperture: "f/76", _f: 76.0)) dataAperture.append(ApertureModel(_aperture: "f/107", _f: 107.0)) dataAperture.append(ApertureModel(_aperture: "f/128", _f: 128.0)) dataAperture.append(ApertureModel(_aperture: "f/215", _f: 215.0)) dataAperture.append(ApertureModel(_aperture: "f/256", _f: 253.0)) dataAperture.append(ApertureModel(_aperture: "f/430", _f: 430.0)) dataAperture.append(ApertureModel(_aperture: "f/512", _f: 512.0)) dataAperture.append(ApertureModel(_aperture: "f/860", _f: 860.0)) dataAperture.append(ApertureModel(_aperture: "f/1024", _f: 1024.0)) return dataAperture } class func DataThirdStop() -> [ApertureModel] { var dataAperture = [ApertureModel]() dataAperture.append(ApertureModel(_aperture: "f/1.0", _f: 1.0)) dataAperture.append(ApertureModel(_aperture: "f/1.4", _f: 1.4)) dataAperture.append(ApertureModel(_aperture: "f/2.0", _f: 2.0)) dataAperture.append(ApertureModel(_aperture: "f/2.8", _f: 2.8)) dataAperture.append(ApertureModel(_aperture: "f/4.0", _f: 4.0)) dataAperture.append(ApertureModel(_aperture: "f/5.6", _f: 5.6)) dataAperture.append(ApertureModel(_aperture: "f/8.0", _f: 8.0)) dataAperture.append(ApertureModel(_aperture: "f/11", _f: 11.0)) dataAperture.append(ApertureModel(_aperture: "f/16", _f: 16.0)) dataAperture.append(ApertureModel(_aperture: "f/22", _f: 22.0)) dataAperture.append(ApertureModel(_aperture: "f/32", _f: 32.0)) dataAperture.append(ApertureModel(_aperture: "f/45", _f: 45.0)) dataAperture.append(ApertureModel(_aperture: "f/64", _f: 64.0)) dataAperture.append(ApertureModel(_aperture: "f/90", _f: 90.0)) dataAperture.append(ApertureModel(_aperture: "f/128", _f: 128.0)) dataAperture.append(ApertureModel(_aperture: "f/256", _f: 256.0)) dataAperture.append(ApertureModel(_aperture: "f/512", _f: 512.0)) dataAperture.append(ApertureModel(_aperture: "f/1024", _f: 1024.0)) return dataAperture }}PickerView
import UIKitclass SelectAperture: UIViewController { @IBOutlet weak var aperturePicker: UIPickerView! var delegateAperture: apertureDelegate? = nil var apertureModelThird = [ApertureModel]() let defaults = UserDefaults.standard //MARK: - Unwind @IBAction func unwindAperture(_ sender: UIStoryboardSegue) { dismiss(animated: true, completion: nil) } override func viewDidLoad() { super.viewDidLoad() aperturePicker.dataSource = self aperturePicker.delegate = self apertureModelThird = ApertureData.DataOneStop() //MARK: - Notification if let selectedRow = defaults.object(forKey: "saveAperturePicker") as? Int { aperturePicker.selectRow(selectedRow, inComponent: 0, animated: true) } NotificationCenter.default.addObserver(self, selector: #selector(aperturePickerChanged), name: Notification.Name.pickersChanged, object: nil) } //MARK: - Func PickerChanced @objc func aperturePickerChanged() { let values = aperturePicker.selectedRow(inComponent: 0) _ = apertureModelThird[values...values] }} //MARK: - PickerView Delegateextension SelectAperture: UIPickerViewDelegate { func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? { apertureModelThird[row].aperture } func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) { NotificationCenter.default.post(name: Notification.Name.pickersChanged, object: self) //MARK: - Speicherung der PickerRow let rowDefaults = defaults rowDefaults.set(row, forKey: "saveAperturePicker") } func pickerView(_ pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusing view: UIView?) -> UIView { let pickerText = UILabel() pickerText.textColor = UIColor.white pickerText.text = apertureModelThird[row].aperture pickerText.font = UIFont.boldSystemFont(ofSize: 20) pickerText.textAlignment = NSTextAlignment.center return pickerText } func pickerView(_ pickerView: UIPickerView, rowHeightForComponent component: Int) -> CGFloat { 30 }} //MARK: - PickerView DataSourceextension SelectAperture: UIPickerViewDataSource { func numberOfComponents(in pickerView: UIPickerView) -> Int { 1 } func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int { apertureModelThird.count }} //MARK: - Extension Notificationextension Notification.Name { static let pickersChanged = Notification.Name("PickerChanged")}//MARK: - Delegateprotocol apertureDelegate {func apertureValue(aperture: String)}UISwitches
import UIKitclass SelectApertureStops: UIViewController { @IBOutlet weak var oneStopSwitch: UISwitch! @IBOutlet weak var halfStopSwitch: UISwitch! @IBOutlet weak var thirdStopSwitch: UISwitch! let switchDelfault = UserDefaults.standard //MARK: - Unwind @IBAction func unwindStops(_ sender: UIStoryboardSegue) { dismiss(animated: true, completion: nil) } override func viewDidLoad() { super.viewDidLoad() oneStopSwitch.isOn = switchDelfault.bool(forKey: "switchStateOne") halfStopSwitch.isOn = switchDelfault.bool(forKey: "switchStateHalf") thirdStopSwitch.isOn = switchDelfault.bool(forKey: "switchStateThird") } @IBAction func oneStopSwitchChanged(_ sender: UISwitch) { if (sender.isOn == true) { halfStopSwitch.isOn = false thirdStopSwitch.isOn = false } else if sender.isOn == false && halfStopSwitch.isOn == false && thirdStopSwitch.isOn == false { oneStopSwitch.isOn = true } switchDelfault.set(sender.isOn, forKey: "switchStateOne") } @IBAction func halfStopSwitchChanged(_ sender: UISwitch) { if sender.isOn == true { oneStopSwitch.isOn = false thirdStopSwitch.isOn = false } else if oneStopSwitch.isOn == false && halfStopSwitch.isOn == false && thirdStopSwitch.isOn == false { halfStopSwitch.isOn = true } switchDelfault.set(sender.isOn, forKey: "switchStateHalf") } @IBAction func thirdStopSwitchChanged(_ sender: UISwitch) { if sender.isOn == true { oneStopSwitch.isOn = false halfStopSwitch.isOn = false } else if oneStopSwitch.isOn == false && halfStopSwitch.isOn == false && thirdStopSwitch.isOn == false { thirdStopSwitch.isOn = true } switchDelfault.set(sender.isOn, forKey: "switchStateThird") }}I would be very happy if you could help me, because I just can't get any further.
I'm still a beginner in Swift5, I've learnt a lot in the meantime, but unfortunately I'm failing with this problem.