我有一个(有点?)关于Swift中的时间转换的基本问题。
我有一个整数,我想转换成小时/分钟/秒。
示例:Int = 27005会给我:
7 Hours 30 Minutes 5 Seconds
我知道如何在PHP中做到这一点,但是,唉,swift不是PHP。
我有一个(有点?)关于Swift中的时间转换的基本问题。
我有一个整数,我想转换成小时/分钟/秒。
示例:Int = 27005会给我:
7 Hours 30 Minutes 5 Seconds
我知道如何在PHP中做到这一点,但是,唉,swift不是PHP。
当前回答
斯威夫特5:
extension Int {
func secondsToTime() -> String {
let (h,m,s) = (self / 3600, (self % 3600) / 60, (self % 3600) % 60)
let h_string = h < 10 ? "0\(h)" : "\(h)"
let m_string = m < 10 ? "0\(m)" : "\(m)"
let s_string = s < 10 ? "0\(s)" : "\(s)"
return "\(h_string):\(m_string):\(s_string)"
}
}
用法:
let seconds : Int = 119
print(seconds.secondsToTime()) // Result = "00:01:59"
其他回答
@r3dm4n的回答很棒。然而,我也需要一个小时。以防别人也需要,这里是:
func formatSecondsToString(_ seconds: TimeInterval) -> String {
if seconds.isNaN {
return "00:00:00"
}
let sec = Int(seconds.truncatingRemainder(dividingBy: 60))
let min = Int(seconds.truncatingRemainder(dividingBy: 3600) / 60)
let hour = Int(seconds / 3600)
return String(format: "%02d:%02d:%02d", hour, min, sec)
}
基于Vadian的回答,我写了一个扩展,它接受Double(其中TimeInterval是类型别名),并输出一个格式化为时间的字符串。
extension Double {
func asString(style: DateComponentsFormatter.UnitsStyle) -> String {
let formatter = DateComponentsFormatter()
formatter.allowedUnits = [.hour, .minute, .second, .nanosecond]
formatter.unitsStyle = style
return formatter.string(from: self) ?? ""
}
}
这里是各种DateComponentsFormatter。UnitsStyle选项看起来像这样:
10000.asString(style: .positional) // 2:46:40
10000.asString(style: .abbreviated) // 2h 46m 40s
10000.asString(style: .short) // 2 hr, 46 min, 40 sec
10000.asString(style: .full) // 2 hours, 46 minutes, 40 seconds
10000.asString(style: .spellOut) // two hours, forty-six minutes, forty seconds
10000.asString(style: .brief) // 2hr 46min 40sec
我已经构建了一个现有答案的mashup,以简化一切并减少Swift 3所需的代码量。
func hmsFrom(seconds: Int, completion: @escaping (_ hours: Int, _ minutes: Int, _ seconds: Int)->()) {
completion(seconds / 3600, (seconds % 3600) / 60, (seconds % 3600) % 60)
}
func getStringFrom(seconds: Int) -> String {
return seconds < 10 ? "0\(seconds)" : "\(seconds)"
}
用法:
var seconds: Int = 100
hmsFrom(seconds: seconds) { hours, minutes, seconds in
let hours = getStringFrom(seconds: hours)
let minutes = getStringFrom(seconds: minutes)
let seconds = getStringFrom(seconds: seconds)
print("\(hours):\(minutes):\(seconds)")
}
打印:
00:01:40
来自@Gamec的答案
typealias CallDuration = Int
extension CallDuration {
func formatedString() -> String? {
let hours = self / 3600
let minutes = (self / 60) % 60
let seconds = self % 60
if hours > 0 { return String(format: "%0.2d:%0.2d:%0.2d", hours, minutes, seconds) }
return String(format: "%0.2d:%0.2d", minutes, seconds)
}
}
用法:
let duration: CallDuration = 3000
duration.formatedString() // 50 minute
SWIFT 3.0方案基本基于上述方案,并进行了扩展。
extension CMTime {
var durationText:String {
let totalSeconds = CMTimeGetSeconds(self)
let hours:Int = Int(totalSeconds.truncatingRemainder(dividingBy: 86400) / 3600)
let minutes:Int = Int(totalSeconds.truncatingRemainder(dividingBy: 3600) / 60)
let seconds:Int = Int(totalSeconds.truncatingRemainder(dividingBy: 60))
if hours > 0 {
return String(format: "%i:%02i:%02i", hours, minutes, seconds)
} else {
return String(format: "%02i:%02i", minutes, seconds)
}
}
}
用AVPlayer这样调用它?
let dTotalSeconds = self.player.currentTime()
playingCurrentTime = dTotalSeconds.durationText