Question

在我的项目中，我要从选择器视图中选择月份，然后在“文本”字段中放置月份名称。但是我必须将月号发送到服务器。

这是我的月份数组

var monthsArray = ["JANUARY","FEBRUARY","MARCH","APRIL","MAY","JUNE","JULY","AUGUST","SEPTEMBER","OCTOBER","NOVEMBER","DECEMBER"]

在这里我遇到了问题。例如，如果我选择“四月”，我必须将4发送到服务器，如何执行此任务，请有人帮忙/为我提供建议。

Answer 1

如果具有文本值，只需在数组中找到该值的索引，然后加1（因为该数组基于零索引）

类似的事情应该起作用：

var monthsArray = ["JANUARY","FEBRUARY","MARCH","APRIL","MAY","JUNE","JULY","AUGUST","SEPTEMBER","OCTOBER","NOVEMBER","DECEMBER"]
if let index = monthsArray.index(of: "APRIL") { // index will be 3 (zero based)
    let monthNumber = index + 1 // +1 as explained earlier
    print(monthNumber) // output: 4
}

Answer 2

类似的功能可能会帮助

func getMonthIndex(_ month: String) -> Int {
    let months = ["JANUARY","FEBRUARY","MARCH","APRIL","MAY","JUNE","JULY","AUGUST","SEPTEMBER","OCTOBER","NOVEMBER","DECEMBER"]
    var monthIndex = -1
    if let idx = months.index(of: month.uppercased()) {
        monthIndex = idx + 1
    }
    return monthIndex
}

可以如下使用：

var idx = getMonthIndex("January")  //1
idx = getMonthIndex("JANUARY") //1
idx = getMonthIndex("DECEMBER") //12
idx = getMonthIndex("DECEMBERRRR") //-1

在上面摘录的“ month.uppercased（）”中非常重要，这将有助于识别所有情况下的月份，例如“一月”，“一月”或“一月”

如何快速将月份名称数组转换为月份编号

2 个答案: