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uchicago-mobi / 2015-Winter-Forum

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Another issue with updating NSUserDefaults #156

Closed hwealnegn closed 9 years ago

hwealnegn commented 9 years ago

I'm having trouble keeping my last viewed article saved in NSUserDefaults. The way I've been saving the article link is to save the string to a defaults object in my 'configure view' method (i.e. as the view is being configured, save the link of the article that's being configured). When the app is running, I can see in my log that this defaults object is updated when I click on different articles. However, when I stop the app and re-open it, the object is empty (null) according to my log. I have included [defaults synchronize] and I haven't run into this issue with other information I'm saving (ex. the favorited articles) so I'm not sure what's going wrong...

emondai commented 9 years ago

I had pretty much the exact same issue. It seems like configureView might be called before you try to load the link from the last session. So whenever the app starts, configureView will overwrite the value you have saved in NSUserDefaults with a null value. To prevent this, try checking if the current link you want to save is null or not, if null, then just return from configure view.

tabinks commented 9 years ago

Good suggestion...

hwealnegn commented 9 years ago

Ah, that's a really good point. Thanks so much!

emondai commented 9 years ago

You're welcome! I spent quite some time on this so I thought I'd help :)