set custom back bar button universally with no title

Question

I want to set custom back bar button for all controllers in the app. I tried using this:

[[UIBarButtonItem appearance] setBackButtonBackgroundImage:backB

Answer 1

You could write a category like this,

//
//  UINavigationItem+BarAditions.h
//
//  Created by Satheeshwaran on on 7/5/13.
//


#import 


@interface UINavigationItem (PersonaAddition)

- (void)setCustomBackButton;

@end


//
//  UINavigationItem+BarAditions.m
//
//  Created by Satheeshwaran on on 7/5/13.
//

#import "UINavigationItem+PersonaAddition.h"


@implementation UINavigationItem (PersonaAddition)

- (void)setCustomBackButton 
{
    //customize ur back button here.
    UIButton *backButton = [UIButton buttonWithType:UIButtonTypeCustom];
    backButton.frame=CGRectMake(0, 0, 60, 30);
    [backButton addTarget:target action:@selector(didPressLeftItem:) forControlEvents:UIControlEventTouchUpInside];
    UIBarButtonItem *barItem = [[UIBarButtonItem alloc] initWithCustomView:backButton];
    self.leftBarButtonItem = barItem;    

}

and import this category in all ur files and call the setCustomBackButton in all ur classes. This works fine for me, even in iOS 7.

In ViewDidLoad of all ur classes.

- (void)viewDidLoad
{
    [super viewDidLoad];

    [self.navigationItem setCustomBackButton];

}