获取汉字首字母

1. 
       NSString *originStr = @"苹果";
2.     NSMutableString *newStr = [NSMutableString stringWithString:originStr];
3.     CFRange range = CFRangeMake(0, newStr.length);
4.     CFStringTransform((CFMutableStringRef)newStr, &range, kCFStringTransformMandarinLatin, NO);
5.     NSLog(@"%@",newStr);
6.     
7.     //píng guǒ
8.     
9.     range = CFRangeMake(0, newStr.length);
10.     CFStringTransform((CFMutableStringRef)newStr, &range, kCFStringTransformStripCombiningMarks, NO);
11.     NSLog(@"%@",newStr);
12.     
13.     //ping guo