Swift 3:致命错误:Double值无法转换为Int,因为它是无限或NaN

Question

当我调用此方法时,收到错误.如何在分配到小时,分钟或秒期间处理NaN或无限值？

这是我的代码:

private func secondsToFormattedString(totalSeconds: Float64) -> String{
    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)
    }
}

Answer 1

您应该检查是否totalSeconds是有效值,例如:

guard !(totalsSeconds.isNaN || totalSeconds.isInfinite) else {
    return "illegal value" // or do some error handling
}

并检查: 在Swift中将Float转换为Int