//获取拼音首字母(传入汉字字符串,返回大写拼音首字母)
- (NSString*)firstCharactor:(NSString *)aString {
//转成了可变字符串
NSMutableString *str = [NSMutableString stringWithString:aString];
//先转换为带声调的拼音
CFStringTransform((CFMutableStringRef)str,NULL,kCFStringTransformMandarinLatin,NO);
//再转换为不带声调的拼音
CFStringTransform((CFMutableStringRef)str,NULL,kCFStringTransformStripDiacritics,NO);
//转化为大写拼音
NSString *pinYin = [str capitalizedString];
//获取并返回首字母
return [pinYin substringToIndex:1];
}
