第一种，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];
return str;
}
第二种，这里是用了copy,_ _bridge(C转换为OC的一种方式)
+ (NSString *)transform:(NSString *)chinese
{
NSMutableString *pinyin = [chinese mutableCopy];
CFStringTransform((__bridge CFMutableStringRef)pinyin, NULL, kCFStringTransformMandarinLatin, NO);
CFStringTransform((__bridge CFMutableStringRef)pinyin, NULL, kCFStringTransformStripCombiningMarks, NO);
NSLog(@"%@", pinyin);
return [pinyin uppercaseString];
}
