我正在格式化正在传递的时间。我收到了这个错误,我正在试图弄清楚它在这里发生了什么。我使用的是最新版本的Xcode(第8版),并在Swift 3中进行编程。这个错误意味着什么以及如何修复它?
我拼凑了与问题相关的部分代码,因此这里不会出现过多的信息。
var date: String {
if _date == nil {
_date = ""
}
return _date
}
init(weatherDict: Dictionary<String, AnyObject>){
if let temp = weatherDict["temp"] as? Dictionary<String, AnyObject>
{
if let min = temp["min"] as? Double{
self._lowTemp = ktof(kelvins: min)
}
if let max = temp["max"] as? Double{
self._highTemp = ktof(kelvins: max)
}
}
let unixConvertedDate = Date(timeIntervalSince1970: date)
if let date = weatherDict["dt"] as? Double {
let unixConvertedDate = Date(timeIntervalSince1970: date)
let dateFormatter = DateFormatter()
dateFormatter.dateStyle = .full
//dateFormatter.dateFormat = "EEEE"
dateFormatter.dateStyle = .none
self._date = unixConvertedDate.dayoftheWeek()
}
}
然后在课堂之外,所有上面的代码都在里面,我有这个。
extension Date {
func dayoftheWeek() -> String {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "EEEE"
return dateFormatter.string(from: self)
}
}
答案 0 :(得分:0)
if let date = weatherDict["dt"] as? Double {
let unixConvertedDate = Date(timeIntervalSince1970: date)
let dateFormatter = DateFormatter()
dateFormatter.dateStyle = .full
dateFormatter.dateFormat = "EEEE"
dateFormatter.timeStyle = .long
self._date = "\(unixConvertedDate)"
}
}
}
extension Date {
func dayOfTheWeek() -> String {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "EEEE"
return dateFormatter.string(from: self)
}
}