从一个字符串中拆分两个日期Swift

import Foundation

func splitDatesFromString(_ dateString: String) -> (Date, Date)? {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "yyyy-MM-dd" // 设置日期格式
    
    let dateComponents = dateString.components(separatedBy: " to ")
    
    if dateComponents.count == 2,
       let startDate = dateFormatter.date(from: dateComponents[0]),
       let endDate = dateFormatter.date(from: dateComponents[1]) {
        return (startDate, endDate)
    }
    
    return nil
}

// 示例用法
let dateString = "2022-01-01 to 2022-12-31"
if let (startDate, endDate) = splitDatesFromString(dateString) {
    let calendar = Calendar.current
    let startYear = calendar.component(.year, from: startDate)
    let startMonth = calendar.component(.month, from: startDate)
    let startDay = calendar.component(.day, from: startDate)
    
    let endYear = calendar.component(.year, from: endDate)
    let endMonth = calendar.component(.month, from: endDate)
    let endDay = calendar.component(.day, from: endDate)
    
    print("Start Date: \(startYear)-\(startMonth)-\(startDay)")
    print("End Date: \(endYear)-\(endMonth)-\(endDay)")
} else {
    print("Invalid date string")
}