Question

I am developing an app were I have to place images on the navigation-bar, whenever the user moves to the other view, different images have to appear in navigation bar. Could someone provide me with some guidance how to do this?

Answer 1

This might be more of a generic approach.

Create a Category for UINavigationBar and in the”.h” file

@interface  UINavigationBar (UINavigationBarCategory)

-(void)setBackgroundImage:(UIImage*)image;

@end

and in the “.m” file

@implementation UINavigationBar (UINavigationBarCategory)

-(void)setBackgroundImage: (UIImage*)image
{

    if (image)
    {

        UIImageView *img = [[UIImageView alloc]initWithImage: image];
        aTabBarBackground.frame = CGRectMake(60,0, 200, 45);//Frame depends upon you 
        [self addSubview:img];
        [img release];
    }

}
@end

And then from every Controller’s ‘viewwillAppear’ you can do something like this:

 [self.navigationController.navigationBar setBackgroundImage: @"abc.png"];