//獲取拼音首字母(傳入漢字字符串, 返回大寫拼音)
- (NSString *)firstCharactor:(NSString *)aString
{
????//轉(zhuǎn)成了可變字符串
????NSMutableString *str = [NSMutableString stringWithString:aString];
????//先轉(zhuǎn)換為帶聲調(diào)的拼音
????CFStringTransform((CFMutableStringRef)str,NULL, kCFStringTransformMandarinLatin,NO);
????//再轉(zhuǎn)換為不帶聲調(diào)的拼音
????CFStringTransform((CFMutableStringRef)str,NULL, kCFStringTransformStripDiacritics,NO);
????//轉(zhuǎn)化為大寫拼音
????NSString *pinYin = [str capitalizedString];
????return pinYin;
}
