iOS 怎麼判斷字串是漢字還是字母

iOS 怎麼判斷字串是漢字還是字母

//如果輸入的暱稱是字母，判斷是否合格

if(self.nickNameText){

for (int i=0; i

NSRange range=NSMakeRange(i,1);

NSString *subString=[self.nickNameTextsubstringWithRange:range];

const char *cString=[subStringUTF8String];

if (strlen(cString)==3)

{

NSLog(@"暱稱是漢字");

if(self.nickNameText.length<2||self.nickNameText.length>8){

UIAlertView *alertView=[[UIAlertViewalloc]initWithTitle:@"不要輸入低於2個或者高於8個"message:@"您輸入的暱稱格式有誤，請重新輸入"delegate:selfcancelButtonTitle:@"取消"otherButtonTitles:@"確定",nil];

[alertViewshow];

return;

}

}elseif(strlen(cString)==1)

{

NSLog(@"暱稱是字母");

if(self.nickNameText.length<4||self.nickNameText.length>16){

UIAlertView *alertView=[[UIAlertViewalloc]initWithTitle:@"不要輸入低於4個或者高於16個"message:@"您輸入的暱稱格式有誤"delegate:selfcancelButtonTitle:@"取消"otherButtonTitles:@"確定",nil];

[alertViewshow];

return;

}

}

}

}