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test
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### 前提・実現したいこと
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swift5でアプリを作成しています。目的は、特定の時間になるとタイマーが作動してカウントダウンを始めるようにしたいです。条件分岐を用いて実現しようとしています。しかし、時間を指定する条件分岐の書き方がわかりません。どうすればいいでしょうか？
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ソースコード
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//
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// ViewController.swift
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// clock5
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//
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// Created by 吉崎敦志 on 2021/01/30.
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//
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import UIKit
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import Foundation
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```
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let cal = Calendar(identifier: .gregorian)
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```
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let tooDate = Date(timeIntervalSinceReferenceDate: +634726800+9000)
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let toDate = Date(timeIntervalSinceReferenceDate: +634726800)
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```
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let startDate = Date()
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let time1 = cal.dateComponents([.second], from: startDate, to: toDate)
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class ViewController: UIViewController {
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@IBOutlet weak var timerLabel: UILabel!
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override func viewDidLoad() {
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super.viewDidLoad()
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// Do any additional setup after loading the view.
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timerLabel.text = ""
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Timer.scheduledTimer(timeInterval: 1, target: self, selector: #selector(ViewController.timerCounter), userInfo: nil, repeats: true)
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}
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@objc func timerCounter(){
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if 1 > 0 {
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timerLabel.text =
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TimerFunction(setDate: toDate)
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}
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}
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func TimerFunction(setDate: Date) -> String {
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var nowDate = Date()
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let calendar = Calendar(identifier: .japanese)
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let timeValue = calendar
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.dateComponents([.day, .hour, .minute, .second], from: nowDate, to: setDate)
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return String(format:
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"残り"+"%02d時間:%02d分:%02d秒",
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timeValue.hour!,
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timeValue.minute!,
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timeValue.second!)
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}
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}
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