Question

I have a view whose controller is being instantiated (NSLog says so), but the view doesn’t show up. If I load it as a modal view it appears, but not if I allocate it.

I have this structure (MenuView is the view that doesn’t appear):

// ViewController.h

#import "MenuViewController.h"
@class MenuViewController;
@interface ViewController : UIViewController<ASIHTTPRequestDelegate>{
    ...
    IBOutlet MenuViewController         *menuView;
}
...
@property(nonatomic, retain) MenuViewController *menuView;
@end

// ViewController.m

#import "MenuViewController.h"

@implementation ViewController

@synthesize menuView;

- (void)loadMenu{
  // THIS WORKS
  // [self presentModalViewController:menuView animated:YES];

  // THIS DOESN'T (VIEWCONTROLLER IS INSTANTIATED BUT VIEW DOESN'T APPEAR

  menuView = [[[MenuViewController alloc] initWithNibName:@"MenuView" bundle:Nil] autorelease];
  [self.navigationController pushViewController:menuView animated:YES];
}

Answer 1

Some ideas:

Try using self.menuView when assigning:

self.menuView = [[MenuViewController alloc] initWithNibName:@"MenuView" bundle:Nil];

Also, probably shouldn’t autorelease a property. Release it in dealloc and set it to nil in viewDidUnload.

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Make sure that self (ViewController) has a navigationController. Was ViewController pushed/presented by a navigationController?

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Is - (void)loadMenu{ being called from the MainThread? Check with [NSThread mainThread]

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Check out some tutorials/examples:

Adding a Navigation Controller by Hand

NavigationController Application in iPhone

Tutorial: Introducing UINavigationController Part 1

iPhone View Switching Tutorial

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