Home/ Questions/Q 747783
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-14T14:14:43+00:00

Im trying to write a method that will pull out the ID from a

  • 0

Im trying to write a method that will pull out the ID from a URI String. My code below seems inefficient, what would be a better way of finding the id string?

NSString *aID = [[[NSString alloc] initWithString:@"http://www.example.com/id368907840?mt=8&uo=4"] autorelease];
NSArray *arrStr = [aID componentsSeparatedByString:@"/id"];
aID = [arrStr objectAtIndex:1];
arrStr = [aID componentsSeparatedByString:@"?mt="];
aID = [arrStr objectAtIndex:0];

The above leaves me with the NSString = 368907840

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    You can use NSURL -lastPathComponent, NSString -stringByTrimmingCharactersInSet, and NSCharacterSet +letterCharacterSet to accomplish the same task as in the following example:

    NSURL* url = [NSURL URLWithString:@"http://www.example.com/id368907840?mt=8&uo=4"];
NSString* lastpath = [url lastPathComponent]; // "id368907840"
NSCharacterSet* letters = [NSCharacterSet letterCharacterSet];
NSString* result = [lastpath stringByTrimmingCharactersInSet:letters]; // 368907840

    Disclaimer: I haven’t actually tried this, so you will need to try it yourself, but I believe this should work.

    • 0