Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Build a Weather App with Swift Simple Data Structures Loading Files From A Directory

Posted by Tim Polehn
Tim Polehn
7,461 Points

I have checked this code in Xcode and it works. Why dose it not work with this objective?

let plistPath = NSBundle.mainBundle().pathForResource("CrazyInformation", ofType: "plist") let dictionary = NSDictionary(contentsOfFile: plistPath!)

plist.swift 
import Foundation

// Add your code below

let plistPath = NSBundle.mainBundle().pathForResource("CrazyInformation", ofType: "plist")
let dictionary = NSDictionary(contentsOfFile: plistPath!)

1 Answer

Jeremy Faith
PLUS
Jeremy Faith
Courses Plus Student 56,696 Points
Jeremy Faith
Jeremy Faith
Courses Plus Student 56,696 Points

The pathForResource method returns an optional and the challenge wants you to use optional binding syntax. Watch the video NSBundle and the File Directory at 02:25. You just need to use if let and place your instance of NSDictionary inside curly brackets {}. If the path exist then the instance will be executed and assigned to the constant dictionary. Also remove the bang ! from plistPath.

if let plistPath = NSBundle.mainBundle().pathForResource("CrazyInformation", ofType: "plist") {

  let dictionary = NSDictionary(contentsOfFile: plistPath)

  }

Hope this helps.