-3
私はいくつかの異なる場所でUIPickerViewを持っています。現在、ユーザーが場所を選択すると、ボタンが表示され、背景イメージが変更されます。ボタンが接続されたら、次のビューをその場所から表示されたユーザーのリストにしたいと思います（ユーザーはFirebaseからフェッチされます）。私はこれに取り組む方法についていくつかのアドバイスをしたいと思います。プロトコル、コンテナビュー、またはセグを使用するのが最善の方法であるかどうかはわかりません。違いがあれば、3つのタブを持つタブ付きアプリケーションでもあります。他のタブは設定とプロファイルタブです。 
私のアプリケーションの構造化に関するアドバイス
class LocationPickerViewController: UIViewController, UIPickerViewDelegate, UIPickerViewDataSource {
@IBAction func locationAction(_ sender: Any) {
}
@IBOutlet weak var locationButton: UIButton!
let locationsArray = ["Please Select your location","San Francisco", "Los Angeles", "Las Vegas", "Chicago","New York","Miami"]
func numberOfComponents(in pickerView: UIPickerView) -> Int {
return 1
}
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
return locationsArray[row]
}
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return locationsArray.count
}
func pickerView(_ pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusing view: UIView?) -> UIView {
let label = (view as? UILabel) ?? UILabel()
label.textColor = .white
label.textAlignment = .center
// label.font = UIFont(name: "SanFranciscoText-Light", size: 50)
label.font = UIFont.systemFont(ofSize: 30)
// where data is an Array of String
label.text = locationsArray[row]
return label
}
func pickerView(_ pickerView: UIPickerView, rowHeightForComponent component: Int) -> CGFloat {
return 50.0
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
if(row == 0)
{
locationLabel.text = "Select Location"
locationButton.isHidden = true
self.view.backgroundColor = UIColor.black
}
else if(row == 1)
{
locationLabel.text = locationsArray[row]
print(locationsArray[row])
locationButton.isHidden = false
locationButton.setTitle("SF", for: .normal)
self.view.backgroundColor = UIColor(patternImage: UIImage(named: "SF")!)
}
else if(row == 2)
{
locationLabel.text = locationsArray[row]
print(locationsArray[row])
locationButton.isHidden = false
locationButton.setTitle("LA", for: .normal)
self.view.backgroundColor = UIColor(patternImage: UIImage(named: "LA")!)
}
else if(row == 3)
{
locationLabel.text = locationsArray[row]
print(locationsArray[row])
locationButton.isHidden = false
locationButton.setTitle("Las Vegas", for: .normal)
self.view.backgroundColor = UIColor(patternImage: UIImage(named: "LV")!)
}
else if(row == 4)
{
locationLabel.text = locationsArray[row]
print(locationsArray[row])
locationButton.isHidden = false
locationButton.setTitle("Chicago", for: .normal)
self.view.backgroundColor = UIColor(patternImage: UIImage(named: "Chicago")!)
}
else if(row == 5)
{
locationLabel.text = locationsArray[row]
print(locationsArray[row])
locationButton.isHidden = false
locationButton.setTitle("New York", for: .normal)
self.view.backgroundColor = UIColor(patternImage: UIImage(named: "NY")!)
}
else if(row == 6)
{
locationLabel.text = locationsArray[row]
print(locationsArray[row])
locationButton.isHidden = false
locationButton.setTitle("MIAMI", for: .normal)
self.view.backgroundColor = UIColor(patternImage: UIImage(named: "Miami")!)
}
}
@IBOutlet weak var locationLabel: UILabel!
@IBOutlet weak var locationPicker: UIPickerView!
override func viewDidLoad() {
locationPicker.backgroundColor = UIColor.black
locationPicker.alpha = 0.6
locationButton.isHidden = true
super.viewDidLoad()
self.locationPicker.selectRow(0, inComponent: 0, animated: true)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}