Question

how to display an image in the navigation bar of an iPhone application? (say, right after the title)

Answer 1

Here's how to have the image centered in the NavBar.

UIImage *image = [UIImage imageNamed: @"NavBarImage.png"];
UIImageView *imageView = [[UIImageView alloc] initWithImage: image];

self.navigationItem.titleView = imageView;

[imageView release];

This code is actually contained with the Apple source for the NavBar and can be found at the iPhone Developer Center at Apple. The source shows you various ways to manipulate both the StatusBar & NavBar.