汉字转拼音

带音标
CFMutableStringRefstring = CFStringCreateMutableCopy(NULL,0,CFSTR("中国"));
   CFStringTransform(string,NULL,kCFStringTransformMandarinLatin,NO);
    NSLog(@"%@", string);
 
不带音标
CFMutableStringRefstring = CFStringCreateMutableCopy(NULL,0,CFSTR("中国"));
   CFStringTransform(string,NULL,kCFStringTransformMandarinLatin,NO);
    CFStringTransform(string,NULL,kCFStringTransformStripDiacritics,NO);
   NSLog(@"%@", string);