ios - 快速设置 NSDate 0 秒

Question

我正在尝试从 UIDatePicker 获取 NSDate，但它不断返回我一个尾随 20 秒的日期时间。如何在 swift 中手动将 NSDate 的秒设置为零？

Answer 1

extension Date {

    var zeroSeconds: Date? {
        let calendar = Calendar.current
        let dateComponents = calendar.dateComponents([.year, .month, .day, .hour, .minute], from: self)
        return calendar.date(from: dateComponents)
    }

}

用法:

let date1 = Date().zeroSeconds

let date2 = Date()
print(date2.zeroSeconds)