［已解决］swift 提取中文汉字的拼音的第一个字母

kCFStringTransformStripCombiningMarks
The identifier of a transform to strip combining marks (accents or diacritics).
kCFStringTransformStripDiacritics
The identifier of a transform to remove diacritic markings.

用代码：

//: Playground - noun: a place where people can play
//Crifan: test translate zh-cn Chinese string into PinYin
 
import UIKit
 
var zhcnNameList = ["张三", "李四", "王五", "徐六", "赵七", "王八",]
print(zhcnNameList)
 
func translateChineseStringToPyinyin(chineseStr:String) -> String {
    print("chineseStr=\(chineseStr)") //chineseStr=王八
 
    var translatedPinyinStr:String = ""
 
    let zhcnStrToTranslate:CFMutableStringRef = NSMutableString(string: chineseStr)
    print("zhcnStrToTranslate=\(zhcnStrToTranslate)") //zhcnStrToTranslate=王八
 
    var translatedOk:Bool = CFStringTransform(zhcnStrToTranslate, nil, kCFStringTransformMandarinLatin, false)
    print("translatedOk=\(translatedOk)") //translatedOk=true
    print("zhcnStrToTranslate=\(zhcnStrToTranslate)") //zhcnStrToTranslate=wáng bā
 
    if translatedOk {
        //continue to translated to pinyin without accents
        let translatedPinyinWithAccents = zhcnStrToTranslate
        translatedOk = CFStringTransform(translatedPinyinWithAccents, nil, kCFStringTransformStripCombiningMarks, false)
 
        if translatedOk {
            translatedPinyinStr = translatedPinyinWithAccents as String
        }
    }
 
    print("translatedPinyinStr=\(translatedPinyinStr)") //translatedPinyinStr=wang ba
    return translatedPinyinStr
}
 
for (idx, eachZhcnName) in zhcnNameList.enumerate() {
    print("[\(idx)] \(eachZhcnName)") //[5] 王八
    let translatedPinyinStr = translateChineseStringToPyinyin(zhcnNameList[idx])
    print("translatedPinyinStr=\(translatedPinyinStr)")
}

效果：

chinese char to pinyin crifan playground

抽空继续去优化：

使用CFStringTransform将汉字转成拼音，非常耗时！ – 郭晓东的专栏 – 博客频道 – CSDN.NET

也去建一个字典缓存，以便提高加载速度。

－》抽空倒是需要去搞清楚Xcode中如何调试查看代码执行时间呢

后续继续优化代码为：

//translate chinese string into pinyin with accents
func translateChineseStrToPinyinWithAccents(chineseStr:String) -> String {
    print("chineseStr=\(chineseStr)") //chineseStr=王八
 
    var translatedPinyinWithAccents:String = ""
 
    let zhcnStrToTranslate:CFMutableStringRef = NSMutableString(string: chineseStr)
    print("zhcnStrToTranslate=\(zhcnStrToTranslate)") //zhcnStrToTranslate=王八
 
    let translatedOk:Bool = CFStringTransform(zhcnStrToTranslate, nil, kCFStringTransformMandarinLatin, false)
    print("translatedOk=\(translatedOk)") //translatedOk=true
 
    if translatedOk {
        translatedPinyinWithAccents = zhcnStrToTranslate as String
        print("translatedPinyinWithAccents=\(translatedPinyinWithAccents)")
    }
 
    return translatedPinyinWithAccents
}
 
//remove accents from (Chinese PinYin) string
func removeAccentsFromStr(strWithAccents:String) -> String {
    print("strWithAccents=\(strWithAccents)") //áng shān sù jì
 
    var removedAccentsStr:String = ""
 
    let strWithAccentsRef:CFMutableStringRef = NSMutableString(string: strWithAccents)
 
    //method 1: kCFStringTransformStripCombiningMarks
    let translatedOk = CFStringTransform(strWithAccentsRef, nil, kCFStringTransformStripCombiningMarks, false)
    //    //method 2: kCFStringTransformStripDiacritics
    //    let translatedOk = CFStringTransform(strWithAccentsRef, nil, kCFStringTransformStripDiacritics, false)
    print("translatedOk=\(translatedOk)") //true
 
    if translatedOk {
        removedAccentsStr = strWithAccentsRef as String
        print("removedAccentsStr=\(removedAccentsStr)") //ang shan su ji
    }
 
    return removedAccentsStr
}
 
//translate Chinese characters string to characterStr:pinyin(without accents) dictionary list
//Note: here use dict list intead of dict to makesure returned key:value sequence can guaranteed
func translateChineseStrToCharPinyinDict(chineseStr:String) -> [[String:String]] {
    //print("chineseStr=\(chineseStr)") //昂山素季
 
    let noneSeperatorStr:String = ""
    let chinseSingleCharStrArr:[String] = splitSingleStrToStrArr(chineseStr, seperatorStr: noneSeperatorStr)
    //print("chinseSingleCharStrArr=\(chinseSingleCharStrArr)") //["昂", "山", "素", "季"]
 
    var translatedCharPinyinDictList:[[String:String]] = [[String:String]]()
 
    let translatedPinyinStrWithAccents:String = translateChineseStrToPinyinWithAccents(chineseStr)
    //print("translatedPinyinStrWithAccents=\(translatedPinyinStrWithAccents)") //áng shān sù jì
 
    let pinyinStrWithoutAccents:String = removeAccentsFromStr(translatedPinyinStrWithAccents)
    //print("pinyinStrWithoutAccents=\(pinyinStrWithoutAccents)") //ang shan su ji
 
    let spaceSeperatorStr:String = " "
    var pinyinStrArr:[String] = splitSingleStrToStrArr(pinyinStrWithoutAccents, seperatorStr: spaceSeperatorStr)
    //print("pinyinStrArr=\(pinyinStrArr)") //["ang", "shan", "su", "ji"]
 
    for (idx, curSingleChineseCharStr) in chinseSingleCharStrArr.enumerate() {
        let curPinyinStr:String = pinyinStrArr[idx]
        translatedCharPinyinDictList.append([curSingleChineseCharStr: curPinyinStr])
    }
 
    //print("translatedCharPinyinDictList=\(translatedCharPinyinDictList)") //[["昂": "ang"], ["山": "shan"], ["素": "su"], ["季": "ji"]]
    return translatedCharPinyinDictList
}

使用举例：

/*
* translateChineseStrToPinyinWithAccents demo
*/
let chineseStr:String = "昂山素季"
let translatedPinyinStrWithAccents:String = translateChineseStrToPinyinWithAccents(chineseStr)
print("translatedPinyinStrWithAccents=\(translatedPinyinStrWithAccents)") //"áng shān sù jì"
 
/*
* removeAccentsFromStr demo
*/
let pinyinWithAccents:String = "áng shān sù jì"
let strippedAccentsPinyin:String = removeAccentsFromStr(pinyinWithAccents)
print("strippedAccentsPinyin=\(strippedAccentsPinyin)") //"ang shan su ji"
 
/*
* translateChineseStrToCharPinyinDict demo
*/
let chineseStrToTranslate:String = "昂山素季"
let translatedCharPinyinDict = translateChineseStrToCharPinyinDict(chineseStrToTranslate)
print("translatedCharPinyinDict=\(translatedCharPinyinDict)") //[["昂": "ang"], ["山": "shan"], ["素": "su"], ["季": "ji"]]

更多相关函数可参考：

https://github.com/crifan/CrifanString

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［已解决］swift 提取中文汉字的拼音的第一个字母

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