汉字操作

NSMutableString *str = [NSMutableString stringWithString:aString];

1.获取汉字的拼音（带声调）

CFStringTransform((CFMutableStringRef)str,NULL, kCFStringTransformMandarinLatin,NO);

2.获取汉字的拼音（不带声调）

CFStringTransform((CFMutableStringRef)str,NULL, kCFStringTransformStripDiacritics,NO);

3.转化为大写拼音

NSString *pinYin = [str capitalizedString];

4.获取到首字母并且转换为大写

- (NSString *)firstCharactor:(NSString *)aString

{

//转成了可变字符串

NSMutableString *str = [NSMutableString stringWithString:aString];CFStringTransform((CFMutableStringRef)str,NULL, kCFStringTransformMandarinLatin,NO);CFStringTransform((CFMutableStringRef)str,NULL, kCFStringTransformStripDiacritics,NO);

NSString *pinYin = [str capitalizedString];

//获取并返回首字母

return [pinYin substringToIndex:1];

}