How to display leftBarButtonItem look same as backBarButtonItem in Objective C iOS-CodePudding

I've a backBarButtonItem for few view controllers it is default showing with back arrow and text I wanted to create a leftBarButtonItem for some other view controller(which are presented instead of push).

How can I create a leftBarButtonItem should look same as backBarButtonItem in Objective C

backBarButtonItem Implemention and ViewControllers are pushed.

    UIBarButtonItem *backNavigationItem = [[UIBarButtonItem alloc] initWithTitle:@"Back"
                                                                      style:UIBarButtonItemStylePlain
                                                                     target:self
                                                                     action:nil];
NSString *accentContrastcolorString = [NSUserDefaults.standardUserDefaults valueForKey:@ "AccentcontrastColor"];
UIColor *accentContrastcolor = [self colorFromHexCode:accentContrastcolorString];
backNavigationItem.tintColor = accentContrastcolor;
viewController.navigationItem.backBarButtonItem = backNavigationItem;

I've created leftBarButtonItem as like below it shows Back title need left arrow arrow with same size.

        UIBarButtonItem *bacNavigationItem = [[UIBarButtonItem alloc] initWithTitle:@"Back"
                                                                          style:UIBarButtonItemStylePlain
                                                                         target:self
                                                                         action:@selector(backButtonTapped:)];
    NSString *accentContrastcolorString = [NSUserDefaults.standardUserDefaults valueForKey:@ "AccentcontrastColor"];
    UIColor *accentContrastcolor = [self colorFromHexCode:accentContrastcolorString];
    bacNavigationItem.tintColor = accentContrastcolor;
    viewController.navigationItem.leftBarButtonItem = bacNavigationItem;

Followed some other links but not working as expected can anyone suggest solution.

How to make leftBarButtonItem looking like backBarButtonItem?

CodePudding user response：

You can create a button and use your own image, or the chevron.backward system image, then set that button as a bar button item's Custom View.

For example:

UIButton *btn = [UIButton buttonWithType:UIButtonTypeSystem];
[btn setTitle:@"Back" forState:UIControlStateNormal];
[btn.titleLabel setFont:[UIFont systemFontOfSize:17.0]];

UIImageSymbolConfiguration *cfg = [UIImageSymbolConfiguration configurationWithPointSize:17.0 weight:UIImageSymbolWeightSemibold];
UIImage *img = [UIImage systemImageNamed:@"chevron.backward" withConfiguration:cfg];
[btn setImage:img forState:UIControlStateNormal];

// add a little spacing between button image and title
CGFloat offset = 8;
UIEdgeInsets edge = btn.contentEdgeInsets;
edge.right = offset;
btn.contentEdgeInsets = edge;
edge = btn.titleEdgeInsets;
edge.right = -offset;
btn.titleEdgeInsets = edge;
edge = btn.imageEdgeInsets;

UIBarButtonItem *barBtnItem = [[UIBarButtonItem alloc] initWithCustomView:btn];

As a side note: using "standard buttons" in the wrong place can cause confusion for the user. In general, when presenting a controller, the user expects to see a button such as "OK" or "Done" or "Save", along with (usually) a "Cancel" button. Showing a "Back" button, that looks like it should behave just as normal navigation, can end up being ambiguous.