Mac OS X Cocoa multiview application navigation

Question

I\'ve already spent 2 full days trying to figure out how to use NSViewControllers in order to create a multiview application.

Here is what I do.

I have 2 Vie

Answer 1

THE PROBLEM: When the user presses a button in View2, you want View1 to appear. It's not.

STEP 1: You say that the button should be invoking an action on your AppController. Set a breakpoint (or add a diagnostic log) in that action, just to verify that it is, in fact, being invoked.

STEP 2: Think about what you want that action to do, precisely. My guess is that you want to hide View2 and show View1. Perhaps

 [view2 setHidden: YES];
 [view1 setHidden: NO];

(I'm not using your names here, of course.) Or you might animate the transitions, either cross-fading the views or moving them.

STEP 3: My guess is that STEP 2 will solve your problem. If it doesn't, use the debugger again to verify that view1 and view2 are not null. (If they're null, you probably have weak variables where you need them to be strong.)

STEP 4: In the unlikely event that you're still stuck, check the frames of view1 and view2. Perhaps view1 isn't where you think it is.

STEP 5: If you're still stuck, check the alphaValue of view1. Maybe you set it to be transparent, and it's being drawn transparently in the right place.

STEP 6: I bet there is no step 6!