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iOS

Posted by Gopal Shah
Gopal Shah
1,783 Points

Fatal Error: unexpectedly found nil while unwrapping an Optional value

In the playlist.swift file in the block of code artists += playlistDictionary[artists] as! [String] and in the master view controller in the let playlist = Playlist(index: 0)

Please help!

3 Answers

Nejc Vukovic
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.a{fill-rule:evenodd;}techdegree seal-36
Nejc Vukovic
Full Stack JavaScript Techdegree Graduate 51,574 Points
Nejc Vukovic
.a{fill-rule:evenodd;}techdegree seal-36
Nejc Vukovic
Full Stack JavaScript Techdegree Graduate 51,574 Points

Hi.

Any errors in Xcode? If you write the line in Xcode an error could popup there where you write the "BANG" operator:

as! -> as ![String]

Could only be a typo:)?

Gopal Shah
Gopal Shah
1,783 Points

No it is not that, I checked though, but is there anything else?

Nejc Vukovic
.a{fill-rule:evenodd;}techdegree seal-36
Nejc Vukovic
Full Stack JavaScript Techdegree Graduate 51,574 Points

OK. My bad. Sry for the wrong tip :)

Provide the link for this challange ?

And if you are having problems on any challanges ask a question out from the challange so the link is automaticly added.

Gopal Shah
Gopal Shah
1,783 Points

From creating a playlist instance

Nejc Vukovic
.a{fill-rule:evenodd;}techdegree seal-36
Nejc Vukovic
Full Stack JavaScript Techdegree Graduate 51,574 Points

Ok. I'll check:) BrB

Nejc Vukovic
.a{fill-rule:evenodd;}techdegree seal-36
Nejc Vukovic
Full Stack JavaScript Techdegree Graduate 51,574 Points

Can't find it... A link would go a long way now :)

Gopal Shah
Gopal Shah
1,783 Points
Gopal Shah
Gopal Shah
1,783 Points

This should help: https://teamtreehouse.com/library/build-a-playlist-browser-with-swift/building-the-music-library-and-playlist-models/using-a-playlist-instance

Josue Gisber
PLUS
Josue Gisber
Courses Plus Student 9,332 Points
Josue Gisber
Josue Gisber
Courses Plus Student 9,332 Points

if you are using Xcode 6.4 and swift 1...something do not use ? when you declare your properties on the struct Playlist. On the other hand, when you declare an instance of UIImage(name: iconName) unwrapped it with !. like this: let largeIconName = playlistDictionary["largeIcon"] as! String largeIcon = UIImage(named: largeIconName)!

xcode will complain if you forget to it!. I hope this help. I was in the same boat but i start digging to find what was causing the error and that was it.