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iOS Build a Weather App with Swift (Retired) Pulling Data From the Web Creating a URL

How do I create a base URL using the NSURL class?

I've tried this challenge for like 30 minutes :0 I hope its not an embarrassing mistake.

import Foundation

let courseID = 25
let treehouseBaseURL = NSURL (String: "https://api.teamtreehouse.com/\(courseID)")

4 Answers

Tuomo Kankaanpää
Tuomo Kankaanpää
13,574 Points

Hi Amaru,

It looks like that you have typed string with capital s on the line you declare the treehouseBaseURL variable. It should be lowercase so try this:

let treehouseBaseURL = NSURL(string: "https://api.teamtreehouse.com/\(courseID)")

Hope this helps!


I'm Having the same problem.... Any idea where I'm going wrong, code is identical o answer above: 'import Foundation

let courseID = 25 let treehouseBaseURL = NSURL(string: "https://api.teamtreehouse.com/\(courseID)")

Error is: Bummer! The URL string assigned to the NSURL isn't correct - please double-check it!

Jason Teo
Jason Teo
Courses Plus Student 8,398 Points

Try this

import Foundation

let courseID = 25

let treehouseBaseURL = NSURL (string: "https://api.teamtreehouse.com/")

The problem is your courseID is an Int must use the String(treehouseCourseID) to type cast. Also the entire url should read.

let courseURL = NSURL (string: "https://api.teamtreehouse.com/course/25")

Don't forget to add the "/course" before the course_id.