如何在swift / IOS中将am/ pm符号转换为当前本地化

import Foundation

func convertAMPMToLocalizedTime(amPmString: String) -> String? {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "a"
    
    if let amSymbol = dateFormatter.amSymbol, let pmSymbol = dateFormatter.pmSymbol {
        if amPmString == amSymbol {
            return NSLocalizedString("上午", comment: "")
        } else if amPmString == pmSymbol {
            return NSLocalizedString("下午", comment: "")
        }
    }
    
    return nil
}

// 示例用法
let amString = "AM"
let pmString = "PM"

if let localizedAM = convertAMPMToLocalizedTime(amPmString: amString) {
    print(localizedAM) // 输出：上午
}

if let localizedPM = convertAMPMToLocalizedTime(amPmString: pmString) {
    print(localizedPM) // 输出：下午
}