汉字转拼音

- (NSString *) phonetic:(NSString*)sourceString

{

    NSMutableString *source = [sourceString mutableCopy];

    CFStringTransform((__bridge CFMutableStringRef)source, NULL, kCFStringTransformMandarinLatin,NO);

    CFStringTransform((__bridge CFMutableStringRef)source, NULL, kCFStringTransformStripDiacritics,NO);

    return [source stringByReplacingOccurrencesOfString:@" " withString:@""];

}