iOS中汉字转拼音

iOS软件开发过程中如果用到了搜索功能，可能会用到汉字转拼音，iOS自带了汉字转拼音的方法。

#warning 参数 ChineseString 必须是 NSMutableString- (NSString*)ChineseCharacterStringToCombineSyllablesWithChineseSting:(NSMutableString*)ChineseString{        NSString *resultString = @"";    //需要先转化成带声调的拼音，才能转化成不带音调的。所以进行了两步。    if (CFStringTransform((__bridge CFMutableStringRef)ChineseString, 0, kCFStringTransformMandarinLatin, NO))    {        NSLog(@"拼音带声调:%@",ChineseString);    }         if (CFStringTransform((__bridge CFMutableStringRef)ChineseString, 0, kCFStringTransformStripCombiningMarks, NO))    {        NSLog(@"不带拼音带声调:%@",ChineseString);        NSArray *resultStringArray = [ChineseString componentsSeparatedByString:@" "];        for (NSString *string in resultStringArray) {                        resultString  = [resultString stringByAppendingString:string];        }    }    return resultString ;}