iOS - 漢字轉拼音並截取首字母返回

- (NSString *)characterToPhoneticize:(NSString *)character

{

    CFStringRef strRef = (__bridge CFStringRef)character;

    CFMutableStringRef string = CFStringCreateMutableCopy(NULL, 0, strRef);

    CFStringTransform(string, NULL, kCFStringTransformMandarinLatin, NO);

    //此時的拼音帶聲調

    //NSLog(@"%@", string);

    CFStringTransform(string, NULL, kCFStringTransformStripDiacritics, NO);

    //此時不帶聲調

    //NSLog(@"%@", string);

    character = (__bridge NSString *)string;

    return  [character substringWithRange:NSMakeRange(0, 1)];

}