Setting Back Button to a custom UIImage - iphone

Question

Currently I'm using my own custom images in UIBarButtonItems with the following code:
UIButton *profileBarButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 35.0f, 35.0f)];
[profileBarButton setImage:[UIImage imageNamed:#"profile-barbutton.png"] forState:UIControlStateNormal];
[profileBarButton addTarget:self.navigationController action:#selector(toggleMenu) forControlEvents:UIControlEventTouchUpInside];
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:profileBarButton];
This works perfectly when I have a defined action to call, such as presenting a modalviewcontroller and turning on edit mode. However, I'm confused as to how I'd set the action for going back from one view to another, not modally? Is there a specific method I could call programmatically? Usually the navigationcontroller takes care of this...

Answer 1

for going back from one view to another, not modally you may write like this:
- (void) toggleMenu
{
if (self.navigationController.visibleViewController == self)
{
[self.navigationController popViewControllerAnimated: YES];
}
}

Answer 2

Use this code:
[self dismissViewControllerAnimated:YES completion:nil];

Answer 3

Check with this code...
MyViewController *vc = [[MyViewController alloc] initWithNibName:#"MyNib" bundle:nil];
UINavigationController *nc = [[UINavigationController alloc] initWithRootViewController:vc];
[self presentModalViewController:nc animated:YES];
[vc release];
[nc release];
Then normally push code like...
OtherViewController *vc = [[OtherViewController alloc] initWithNibName:#"MyOtherNib" bundle:nil];
[self.navigationController pushViewController:vc animated:YES];
[vc release];
:)

Answer 4

Try this code:
UIImage *backButtonImage = [UIImage imageNamed:#"backButton.png"];
UIButton *backButton = [UIButton buttonWithType:UIButtonTypeCustom];
[backButton setImage:backButtonImage forState:UIControlStateNormal];
backButton.frame = CGRectMake(0, 0, backButtonImage.size.width, backButtonImage.size.height);
[backButton addTarget:self action:#selector(back) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *customBackBarItem = [[UIBarButtonItem alloc] initWithCustomView:backButton];
self.navigationItem.leftBarButtonItem = customBackBarItem;
In the #selector(back), "back" is the method that triggers the popup method of navigationcontroller. Like this:
-(void)back {
[self.navigationController popViewControllerAnimated:YES];
}