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【Swift4】Date()の９時間のズレを調整【Date】

Last updated at 2017-12-28Posted at 2017-12-28

Date()はGMTベースなので日本では９時間ズレます。
単純にシステム日時が欲しい時のためにメソッドをひとつ追加します。

Dateを拡張

extension Date {
    
    func toStringWithCurrentLocale() -> String {

        let formatter = DateFormatter()
        formatter.timeZone = TimeZone.current
        formatter.locale = Locale.current
        formatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
        
        return formatter.string(from: self)
    }

}

テスト

// 15時に実行

let date = Date()
print(date)
print(date.toStringWithCurrentLocale())

// 2017-12-28 06:00:30 +0000
// 2017-12-28 15:00:30

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