reading/writing logical error

[sumosumo84]

Hello, i am having a reading/writing logical error.

The whole reading and writing works fine, but it doesnt read until the value changes.


1)I have the variable exp

2)exp increments by 1 everytime a picture hits the wall.

3)application quits, and exp is saved

4)application launches and exp is loaded but not displayed yet

5)the picture hits the wall and exp incriments

6)after step 5 happens exp is incrimenting after the saved value and the label matches exp's value

My problem is that if the user goes strait to the stats screen exp will be at 0, so they will be worried.

I have tried calling the load statement in viewDidLoad, awakeFromNib, and applicationDidBecomeActice; which is in the Delegate.

If you need more info please ask,

REMEMBER: the reading and writing works, it just doest read until exp changes!

[smasher]

I assume you have a label set up in interface builder, and hooked up to an outlet in your view controller.

I suspect you're trying to set myLabel.text = blah before the view is actually loaded, and therefore before myLabel is still set to nil. Any message sent to nil is ignored, so calling nil.text = blah does nothing. Try debugging or logging myLabe to see if it is nil.

This happens because views are not actually loaded until someone asks for myController.view - that's when the view is built and the outlets are connected.

I typically load the data when the app starts, pass the data into a property of the view controller, and then set the labels / fields in viewWillAppear. I'd love to hear what others do, though.

[sumosumo84]

Originally Posted by smasher

I assume you have a label set up in interface builder, and hooked up to an outlet in your view controller.

I suspect you're trying to set myLabel.text = blah before the view is actually loaded, and therefore before myLabel is still set to nil. Any message sent to nil is ignored, so calling nil.text = blah does nothing. Try debugging or logging myLabe to see if it is nil.

This happens because views are not actually loaded until someone asks for myController.view - that's when the view is built and the outlets are connected.

I typically load the data when the app starts, pass the data into a property of the view controller, and then set the labels / fields in viewWillAppear. I'd love to hear what others do, though.

ok. thanks, i have this app more than halfway built, and i wouldnt want to transfer my labels into a viewWillAppear, unless its not that hard of course.

Is there a function to set exp to [[NSUserDefaults standardDefaults] integerWithKey:@"key"]; before the view loads, like a beforeViewLoads method?

[sumosumo84]

nvm about my last post, i figured out what you meant, and thanks! it works great!!!

[smasher]

No problem, I should have been more clear. This is better: "The view (and outlet objects) are not loaded yet when viewDidLoad, awakeFromNib, and applicationDidBecomeActive are called. You can't set the text of a label until viewWillAppear or viewDidAppear."