Question

this is hard to describe but I am currently catching a string from a database, this string can be 1-4 characters long, however I am wanting to always display 4 characters, so if i get say a string back that is 34, i want it to be 0034.

I have set up a method to catch the string so now I just need to figure out how to do this. what I then plan to do is feed that string into a NSArray so I can send each [i’th] of the array off to 4 differetn methods that control animations in my app.

The reason its in string format is because I have had to bounce it round from hex, to int to string for various formatting reasons within the application.

this is my code i have so far. Suggestions/solutions would be great thankyou, I am so new its hard to find solutions for stuff like string manipulation etc..

//... other method I am getting the string from/.
[self formatMyNumber:dataString];
///..


-(void)formatMyNumber:(NSString *)numberString{
    //resultLabel.text = numberString; //check to make sure  string makes it to here.
    //NSLog(@"hello From formatMyNumber method"); //check
}

//..
//the with send off each character to 4 animation methods that accept integers.
- (void)playAnimationToNumber:(int)number{
//...

//UpDated… weird stuff happening.
here is my method so far.

//Number Formatter
-(void)formatMyNumber:(NSString *)numberString{


    NSLog(@"This is what is passed into the method%@",numberString);
    int tempInt = (int)numberString;
    NSLog(@"This is after I cast the string to an int %i",tempInt);

    //[NSString alloc] stringWithFormat:@"%04d", numberString];
    NSString *tempString = [[NSString alloc] initWithFormat:@"%04d", tempInt];

    NSLog(@"This is after I try to put zeros infront %@",tempString);

    //resultLabel.text = tempString;
    //NSLog(@"hello From formatMyNumber method");
}

this is the output.

[Session started at 2011-06-19
16:18:45 +1200.] 2011-06-19
16:18:54.615 nissanCode0.1[4298:207]
731 2011-06-19 16:18:54.616
nissanCode0.1[4298:207] 79043536
2011-06-19 16:18:54.617
nissanCode0.1[4298:207] 79043536
2011-06-19 16:18:54.617
nissanCode0.1[4298:207] hello From
formatMyNumber method

Answer 1

As far as the number of zeros preceding your string goes there are a couple of ways to do this. I’d suggest:

NSString *myString = [NSString stringWithFormat:@”%04d”,[dataString intValue]];