NSMutableString *ms = [[NSMutableString alloc] initWithString:@"我是中国人"];
if (CFStringTransform((__bridge CFMutableStringRef)ms, 0, kCFStringTransformMandarinLatin, NO)) {
NSLog(@"Pingying: %@", ms); // wǒ shì zhōng guó rén 带声调
}
if (CFStringTransform((__bridge CFMutableStringRef)ms, 0, kCFStringTransformStripDiacritics, NO)) {
NSLog(@"Pingying: %@", ms); // wo shi zhong guo ren 不带声调
}