How to Edit Empty Spaces of Left, Right UIBarButto

Question

I was using iOS 6.1 earlier, but now I have moved to iOS 7. Along with other problems, I have observed that in my navigation bar, the left space of left bar button item and right empty space of the right button bar item are quite more in IOS 7 than in iOS 6.

I need to know is there a way I can reduce empty spaces of left, right bar button items in navigation bar??

Thanks in advance.

Answer 1

This is my solution for Swift 3.0:

rightBtn.imageInsets = UIEdgeInsets(top: 0, left: -13.0, bottom: 0, right: 13.0) self.navigationItem.rightBarButtonItem = rightBtn

Answer 2

Swift 3.1

To give left bar button item negative space:

    let backButton = UIButton.init(type: .custom)
    backButton.frame = CGRect.init(x: 0, y: 0, width: 40, height: 40)
    // negative space
    backButton.contentEdgeInsets = UIEdgeInsets(top: 0, left: -44.0, bottom: 0, right: 0)
    backButton.setImage(Ionicons.iosArrowBack.image(30, color: UIColor(hex: 0xFD6250)), for: .normal)
    backButton.addTarget(self, action: #selector(InviteVC.goBack), for: .touchUpInside)   
    // set back button
    self.navigationItem.leftBarButtonIteUIBarButtonItem.init(customView: backButton) 

---

Answer 3

for swift you can do this

var negativeSpace:UIBarButtonItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FixedSpace, target: nil, action: nil)
negativeSpace.width = -17.0
self.navigationItem.rightBarButtonItems = [negativeSpace, requiredButton /* this will be the button which you actually need */]

Answer 4

Swift 3:

let negativeSpacer:UIBarButtonItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.fixedSpace, target: nil, action: nil)
        negativeSpacer.width = -10
self.navigationItem.leftBarButtonItems = [negativeSpacer, yourBarButtonItem]

Answer 5

For Swift 2.0, this was my solution to get the following effect...

(the actual values may be different, depending on your situation)

let captureButton = UIButton()
captureButton.setTitle("CAPTURE DETAILS", forState: .Normal)
captureButton.frame = CGRectMake(0, 0, 200, 95)
captureButton.addTarget(self, action: Selector("showCaptureDetailsForm:"), forControlEvents: .TouchUpInside) // *** See update below for Swift 2.2 syntax
captureButton.setBackgroundImage(UIImage(named: "blueTopRight"), forState: .Normal)

let rightBarButton = UIBarButtonItem()
rightBarButton.customView = captureButton        

let negativeSpacer = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FixedSpace, target: nil, action: nil)
negativeSpacer.width = -25;

self.navigationItem.setRightBarButtonItems([negativeSpacer, rightBarButton ], animated: false)

Swift 2.2 UPDATE:

For Swift 2.2, the action: Selector method has changed, and should be typed as follows

captureButton.addTarget(self, action: #selector(YourViewController.showCaptureDetailsForm(_:)), forControlEvents: .TouchUpInside)

Answer 6

In order to fix this bug, you must subclass UIButton so that you can override alignmentRectInsets. From my testing, you'll need to return a UIEdgeInsets with either a positive right offset or a positive left offset, depending on the button position. These numbers make no sense to me (at least one of them should be negative, according to common sense), but this is what actually works:

- (UIEdgeInsets)alignmentRectInsets {
    UIEdgeInsets insets;
    if (IF_ITS_A_LEFT_BUTTON) {
        insets = UIEdgeInsetsMake(0, 9.0f, 0, 0);
    } 
    else { // IF_ITS_A_RIGHT_BUTTON
        insets = UIEdgeInsetsMake(0, 0, 0, 9.0f);
    }
    return insets;
}

Special thanks to @zev for suggesting I try adjusting alignmentRectInsets.