Question

I need to manipulate some URL in term of adding component to it in this way:

/img/david/PlayBasketball.jpg

will become:

/img/HiRes/david/PlayBasketball.jpg

in Objective C for iPhone, how do I do it?

Thanks in advance!

Answer 1

Use the NSString methods pathComponents and pathWithComponents:

NSString *p = @"/img/david/PlayBasketball.jpg";

NSMutableArray *cmps = [NSMutableArray arrayWitharray:[p pathComponents]];
// cmps will be: ["/", "img", "david", "PlayBasketball.jpg"]

[cmps insertObject:@"HIRes" atIndex:2];
// You want index 2 because "/" is at index 0, and "img" is at index 1.

NSString *newPath = [NSString pathWithComponents:cmps];
// The pathWithComponents method will add the rest of the "/"'s for you

Now, newPath will be: @"/img/HiRes/david/PlayBasketball.jpg".