Question

I have both a UIImage and a “back” button appearing in my viewcontroller and can’t figure out why.

here’s a screenshot:

here’s my code:

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];

    [self.navigationController setNavigationBarHidden:NO animated:YES];

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

    [self.navigationController.navigationBar addSubview:imageView];

}

thanks for any help.

Answer 1

You will have to create a backbarbutton item and add a custom to it. Then you define the action for it, where you pop the current view.

 UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
        [button setImage:buttonImage forState:UIControlStateNormal];

        //set the frame of the button to the size of the image (see note below)
        button.frame = CGRectMake(0, 0, buttonImage.size.width, buttonImage.size.height);

        [button addTarget:self action:@selector(back) forControlEvents:UIControlEventTouchUpInside];

        //create a UIBarButtonItem with the button as a custom view
        UIBarButtonItem *customBarItem = [[UIBarButtonItem alloc] initWithCustomView:button];
        self.navigationItem.leftBarButtonItem = customBarItem;


// selector for backButton

-(void)back{
[self.navigationController popViewController];
}