Question

I’m a “fresh” iOS developer and trying to resolve an issue as follows –

I’m trying to build a game and I’ve created a UITabBarController with 3 UINavigationController items. One of the items’ view – the game session – is modified during running (e.g. labels/buttons appear/disappear etc).
Now, when the game is completed I would like to reload the self view from beginning with the default configuration.

Since [[self view] setNeedsDisplay] doesn’t do it I wonder how this process should be done?
I can build a method that bring all the objects to their default state but I guess this is not the right way to do it.

Answer 1

You’ll have to hold on to your default state within your view class. Create a subclass of UIView and make some method like -resetToDefaultState where you do what you want. Then just call that method in your view controller. Or put the state resetting logic in your view controller itself, though I would argue it probably the view’s concern what “default state” even means.

Then, in that method, just reset variable labels and properties. As a side effect, you can call this method in your view’s init methods so you don’t duplicate your default state code.

(By the way, -setNeedsDisplay has nothing to do with default state or anything. It just marks the view as dirty so that its -drawRect: method is called on the next main run loop cycle.)