Question

我有一个datePicker用于选择开始日期和时间，还有一个durationTextLabel用于向该日期和时间添加分钟。如果未插入任何文本，我将duration设置为最小值30，但是结果日期和时间是相同的。你看到我误会了吗？像往常一样非常感谢您。

功能如下：

func setQueryParameters() {
        let dateFormatter = DateFormatter()
        var convertedDate: String!

        dateFormatter.dateFormat = "yyyy/MM/dd/hh/mm"
        convertedDate = dateFormatter.string(from: datePicker.date)
        let calendar = Calendar.current

        let components = (calendar as NSCalendar).components([.year, .month, .day, .weekday, .hour, .minute] , from: datePicker.date)
        let year: Int = components.year!
        let month: Int = components.month!
        let day: Int = components.day!
        let weekday: Int = components.weekday!
        let hour: Int = components.hour!
        let minute: Int = components.minute!

        var duration: Double?
        duration = Double(durationTextField.text!)
        let endDate = datePicker.date.addingTimeInterval(duration!)
        let endComponents = (calendar as NSCalendar).components([.hour, .minute], from: endDate)
        let endHour: Int = endComponents.hour!
        let endMinute: Int = endComponents.minute!

        if durationTextField.text != nil {
            duration = Double(durationTextField.text!) ?? 30.00

        } else { return}

        // Opening Time Query parameter
        openingTimeQueryStart = Int("\(String(describing: weekday))"+"00"+"00")!
        openingTimeQueryEnd = Int("\(String(describing: weekday))"+"\(String(describing: hour))"+"\(String(describing: minute))")!
        print("opening query is \(openingTimeQueryEnd)")



        // Closing Time Query parameter
        closingTimeQueryStart = Int("\(String(describing: weekday))"+"\(String(endHour))"+"\(String(endMinute))")!
        closingTimeQueryEnd = Int("\(String(describing: weekday))"+"00"+"00")!


        print("closing time query is \(closingTimeQueryStart)")


        // Booking Query parameter
        let bookingQueryString = "\(String(describing: year))"+"\(String(describing: month))"+"\(String(describing: day))"+"\(String(describing: weekday))"+"\(String(describing: hour))"+"\(String(describing: minute))"+"\(String(endHour))"+"\(String(endMinute))"

        bookingQuery = Int(bookingQueryString)!// ?? openingTimeQuery  // found nil unwripping optional

    }

Answer 1

这里有很多问题。

实际上，除了创建然后从未使用dateFormatter之外，您从未使用过convertedDate。因此，删除未使用的代码。
您在duration处表示的时间应以分钟为单位，但是将其视为秒。您需要乘以60才能将其转换为分钟。
您用于计算诸如openingTimeQueryEnd之类的所有代码的每个值都取决于两位数，但是您的代码却无法获得理想的结果。

例如，一行：

openingTimeQueryEnd = Int("\(String(describing: weekday))"+"\(String(describing: hour))"+"\(String(describing: minute))")!

应改写为：

openingTimeQueryEnd = Int(String(format: "%02d%02d%02d", weekday, hour, minute))!

或作为：

openingTimeQueryEnd = weekday * 10000 + hour * 100 + minute

对其他类似的行进行类似的更改。

将时间添加到日期选择器的日期和时间将导致相同的日期和时间。迅速

1 个答案: