Swift UIPickerViewのメモ

import UIKit

class PickerViewController: UIViewController,UIPickerViewDelegate,UIPickerViewDataSource {

    @IBOutlet weak var emojiPicker: UIPickerView!

    override func viewDidLoad() {
        super.viewDidLoad()
        emojiPicker.dataSource = self
        emojiPicker.delegate = self
    }

    //pickerViewデータ行数
    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        return emojis.count
    }
    //pickerView列数
    func numberOfComponents(in pickerView: UIPickerView) -> Int {
        return 1
    }
    //pickerViewデータ内容
    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        return emojis[row]
    }
    //pickerView選定事件
    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
        <#code#>
    }