Question: How can I get the first letter of Chinese characters and pinyin? Generally used for address book construction, Chinese Character address book

Question: How can I get the first letter of Chinese characters and pinyin? Generally used for address book construction, Chinese Character address book

/*

The programmer's goal is

Conquer the sea of stars ~

*/

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

{

// Converted to a variable string

NSMutableString * str = [NSMutableString stringWithString: aString];

// First convert to PinYin with tones

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

// Convert to PinYin without tone

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

// Convert to uppercase pinyin

NSString * pinYin = [str capitalizedString];

// Obtain and return the first letter

Return [pinYin substringToIndex: 1];

}