Question

I’m using iphone sdk 3.1.2.

I have 3 root view controllers each on separate tabs. Their left nav bar button has a custom view assigned as follows in each of their viewDidLoad methods. The master custom view is held by the AppDelegate. Each regView is a retained property. In the appDidFinishlaunching method I alloc an imageView (instance of AppDelegate) and assign it an image:

UImageView* regView;
@property (nonatomic,retain) UIImageView* regView;

-(void) viewDidLoad
{
 ....

self.regView = appDelegate.regView;

    UIBarButtonItem* regButton = [[UIBarButtonItem alloc] initWithCustomView:self.regView];
    self.navigationItem.leftBarButtonItem = regButton;
    [regButton release];
}

However when I swap between the tab bar items the previous selected view controller loses its leftBarButton custom view until only the very last selected holds onto it.The other 2 can never get their leftbutton custom view back!

Anyone know what I’m doing wrong?

Answer 1

I am pretty sure you cannot share subviews like that across multiple views.

You will have to create three unique instances of that regView instead of sharing one instance.