中英文字符计算

//按照中文两个字符，英文数字一个字符计算字符数

-(NSUInteger)unicodeLengthOfString:(NSString *)text {

    NSUInteger asciiLength =0;

    for (NSUInteger i =0; i length; i++) {

        unichar uc = [textcharacterAtIndex: i];

        asciiLength +=isascii(uc) ? 1 :2;

    }

    NSLog(@"字符长度为： %@",@(asciiLength));

    return asciiLength;

}