How to adjust space between two UIBarButtonItem in rightBarButtonItems

I am using the following codes to add two button to self.navigationItem.rightBarButtonItems, and I think in iOS7, the space between two buttons are too wide, is there a way to decrease the space between these two buttons?

UIBarButtonItem *saveStyleButton = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"save.png"] style:UIBarButtonItemStyleBordered target:self action:@selector(saveStyle)];

UIBarButtonItem *shareStyleButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:self action:@selector(shareStyle)];

NSArray *arr= [[NSArray alloc] initWithObjects:shareStyleButton,saveStyleButton,nil];

self.navigationItem.rightBarButtonItems=arr;

Appreciate any hint or idea.

Solution 1:

Updated at Jul 2015

A better way to do this is to use storyboard (tested in Xcode 6.4). First, add a UINavigationItem; secondly, add a Bar Button Item; thirdly, add a view to the Bar Button Item you just created in step 2; fourthly, add as many buttons as you wish into that view you just dragged in; lastly, adjust the space with your mouse and constraints.

Related Questions

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How to add buttons to navigation controller visible after segueing?

Old Answer (Only acceptable for small insets)

Use imageInsets property:

leftButton.imageInsets = UIEdgeInsetsMake(0.0, 0.0, 0, -15);
rightButton.imageInsets = UIEdgeInsetsMake(0.0, -15, 0, 0);

for three or more buttons, the middle one(s) get both insets:

leftButton.imageInsets = UIEdgeInsetsMake(0.0, 0.0, 0, -15);
middleButton.imageInsets = UIEdgeInsetsMake(0.0, -15, 0, -15);
rightButton.imageInsets = UIEdgeInsetsMake(0.0, -15, 0, 0);

For the right side buttons, be careful: the FIRST button in the item array is the RIGHT one:

rightButton.imageInsets = UIEdgeInsetsMake(0.0, -15, 0, 0);
middleButton.imageInsets = UIEdgeInsetsMake(0.0, -15, 0, -15);
leftButton.imageInsets = UIEdgeInsetsMake(0.0, 0.0, 0, -15);

IMPORTANT: Split the inset between the two neighbors; if apply the entire inset to one edge, it will become obvious that the buttons are overlapping in the "blank" space - one button gets all of the "gap" touches. Even when "split" the adjustment like this, at -40 on both edges, the tap will definitely go to wrong button sometimes. -15 or -20 is the most to consider using with this technique.

By applying this method, the button could even be moved around in four directions.

Solution 2:

My solution is using a custom view for right bar buttons. Create a horizontal stackview with equal spacing and add any number of buttons as subview.

Sample code:

func addRightBarButtonItems()
{
    let btnSearch = UIButton.init(type: .custom)
    btnSearch.setImage(UIImage(systemName: "magnifyingglass"), for: .normal)
    btnSearch.addTarget(self, action: #selector(MyPageContainerViewController.searchButtonPressed), for: .touchUpInside)
    
    let btnEdit = UIButton.init(type: .custom)
    btnEdit.setImage(UIImage(systemName: "pencil"), for: .normal)
    btnEdit.addTarget(self, action: #selector(MyPageContainerViewController.editButtonPressed), for: .touchUpInside)
    
    let stackview = UIStackView.init(arrangedSubviews: [btnEdit, btnSearch])
    stackview.distribution = .equalSpacing
    stackview.axis = .horizontal
    stackview.alignment = .center
    stackview.spacing = 8
    
    let rightBarButton = UIBarButtonItem(customView: stackview)
    self.navigationItem.rightBarButtonItem = rightBarButton
}

Solution 3:

Swift 5

In your AppDelegate add this code:

let stackViewAppearance = UIStackView.appearance(whenContainedInInstancesOf: [UINavigationBar.self])
stackViewAppearance.spacing = -10

Solution 4:

First:

For UIBarButtonItem you must use constructor init(customView: UIView)

Second:

Use fixedSpace for set space between buttons

example:

let firstButton = UIButton()
let firstButtonItem = UIBarButtonItem(customView: firstButton)

let secondButton = UIButton()
let secondButtonItem = UIBarButtonItem(customView: secondButton)

let space = UIBarButtonItem(barButtonSystemItem: .fixedSpace, target: nil, action: nil)
space.width = WIDTH

self.navigationItem.rightBarButtonItems = [firstButtonItem, space, secondButtonItem]