CODEWITHSUNDEEP
iphoneobjective-cnsstringnsarraynsuserdefaults
Julian
Julian

Reputation: 418

Retrieval of NSArray from NSUserDefaults returns empty array

I am experiencing strange behaviour with NSUserDefaults. I am initially storing an array to the user defaults in my AppDelegate.m:

NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
NSArray *weekdayIDs = [defaults objectForKey:@"weekdayIDs"];

if (weekdayIDs == nil) {
weekdayIDs = [NSArray arrayWithObjects:@"su", @"mo", @"tu", @"we", @"th", @"fr", @"sa", nil];
[defaults setObject:weekdayIDs forKey:@"weekdayIDs"];
}

[defaults synchronize];

Now in a different view controller ContentViewController.m, I want to retrieve the array:

NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
NSArray *weekdayIDs = [defaults objectForKey:@"weekdayIDs"];

But I just get an array without objects, although its count == 7. I also used arrayForKey: but with the same result. I added a screenshot from my breakpoint.

enter image description here

I am regularly using NSUserDefaults, but currently I am bit stuck on this. It's probably a stupid mistake, anyone care to help?

Thank you so much!

-- Update:

I also figured it might be a problem with the init of the NSArray in the first place, but even replacing its objects with manually created NSString *dwid_su = [NSString stringWithString:@"su"]; didn't work.

Upvotes: 1

Views: 740

Answers (1)

Lorenzo B
Lorenzo B

Reputation: 33428

Your code works perfectly.

Just, print the description of you array and you will see what you want.

Right click on weekdayIDs variable and select Print Description of weekdayIDs

or use through lldb debugger console po weekdayIDs

or NSLog(@"%@", weekdayIDs);

Here the results.

enter image description here

Upvotes: 2

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