Question

I am receiving a string from server in this format:

0_1_2_3

My task is to select for digits from this string to fill four labels with them.
First idea was:

NSString *res1 = [result substringWithRange:NSMakeRange(0, 1)];
[firstLabel setText:res1];

four times with appropriate labels.
But operation will repeats many times and every time I will receive a string with increased digit values. So when every digit be a decimal this code will not work. So how can I track every digit independently from their length in a proper way?

Answer 1

NSString comes with a convenience method called -componentsSeparatedByString:

NSString *myString = @"0_1_2_3";
NSArray *myDigitStrings = [myString componentsSeparatedByString:@"_"];

/* access digit strings from myDigitStrings array by index or fast enumeration... */
for (NSString *myDigitString in myDigitStrings)
    NSLog(@"digit string: %@", myDigitString);