Question: Any idea why the custom nav bar back button image isn't displaying with this code?

instead of showing the uiimage it's showing the "< Back" default iOS button in text only

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

self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"freccia.png"] landscapeImagePhone:nil style:UIBarButtonItemStylePlain target:nil action:@selector(backBtnPress)];

```

could it be this parameter? `UIBarButtonItemStylePlain`

thanks

Answer: 
use this code: 

```
UIImage *imageBack = [UIImage imageNamed:@"yourImage.png"];
UIButton *btnBack = [UIButton buttonWithType:UIButtonTypeCustom];
btnBack.bounds = CGRectMake(0, 0, imageBack.size.width, imageBack.size.height);
[btnBack setBackgroundImage:imageBack forState:UIControlStateNormal];
[btnBack addTarget:self action:@selector(back) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *barButtonBack = [[UIBarButtonItem alloc] initWithCustomView:btnBack];

self.navigationItem.hidesBackButton = YES;
self.navigationItem.leftBarButtonItem = barButtonBack;

-(void)back {
[self.navigationController popViewControllerAnimated:YES];

}

```
You usually set the back button in the parent view controller. However, it might just be easier to use `leftBarButtonItem` instead of `backBarButtonItem`.