I would like to place an icon left of the two lines of text such that there's about 2-3 pixels of space between the image and the start of text. The control itself is Center aligned horizontally (set through Interface Builder)
The button would resemble something like this:
| |
|[Image] Add To |
| Favorites |
I'm trying to configure this with contentEdgeInset, imageEdgeInsets and titleEdgeInsets to no avail. I understand that a negative value expands the edge while a positive value shrinks it to move it closer to the center.
I tried:
[button setTitleEdgeInsets:UIEdgeInsetsMake(0, -image.size.width, 0, 0)];
[button setImageEdgeInsets:UIEdgeInsetsMake(0, button.titleLabel.bounds.size.width, 0, 0)];
but this doesn't display it correctly. I've been tweaking the values but going from say -5 to -10 on the left inset value doesn't appear to move it in expected manner. -10 will scoot the text all the way to the left so I expected -5 to scoot it half way from the left side but it doesn't.
What's the logic behind insets? I'm not familiar with image placements and related terminology.
I used this SO question as a reference but something about my values isn't right. UIButton: how to center an image and a text using imageEdgeInsets and titleEdgeInsets?
The answer is
Swift 4.x
extension UIButton {
func centerTextAndImage(spacing: CGFloat) {
let insetAmount = spacing / 2
let writingDirection = UIApplication.shared.userInterfaceLayoutDirection
let factor: CGFloat = writingDirection == .leftToRight ? 1 : -1
self.imageEdgeInsets = UIEdgeInsets(top: 0, left: -insetAmount*factor, bottom: 0, right: insetAmount*factor)
self.titleEdgeInsets = UIEdgeInsets(top: 0, left: insetAmount*factor, bottom: 0, right: -insetAmount*factor)
self.contentEdgeInsets = UIEdgeInsets(top: 0, left: insetAmount, bottom: 0, right: insetAmount)
}
}
Usage:
button.centerTextAndImage(spacing: 10.0)
A small addition to Riley Avron answer to account locale changes:
extension UIButton {
func centerTextAndImage(spacing: CGFloat) {
let insetAmount = spacing / 2
let writingDirection = UIApplication.sharedApplication().userInterfaceLayoutDirection
let factor: CGFloat = writingDirection == .LeftToRight ? 1 : -1
self.imageEdgeInsets = UIEdgeInsets(top: 0, left: -insetAmount*factor, bottom: 0, right: insetAmount*factor)
self.titleEdgeInsets = UIEdgeInsets(top: 0, left: insetAmount*factor, bottom: 0, right: -insetAmount*factor)
self.contentEdgeInsets = UIEdgeInsets(top: 0, left: insetAmount, bottom: 0, right: insetAmount)
}
}
The swift 4.2 version of solution would be the following:
let spacing: CGFloat = 10 // the amount of spacing to appear between image and title
self.button?.imageEdgeInsets = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: spacing)
self.button?.titleEdgeInsets = UIEdgeInsets(top: 0, left: spacing, bottom: 0, right: 0)
In swift 5.3 and Inspired by @ravron answer:
extension UIButton {
/// Fits the image and text content with a given spacing
/// - Parameters:
/// - spacing: Spacing between the Image and the text
/// - contentXInset: The spacing between the view to the left image and the right text to the view
func setHorizontalMargins(imageTextSpacing: CGFloat, contentXInset: CGFloat = 0) {
let imageTextSpacing = imageTextSpacing / 2
contentEdgeInsets = UIEdgeInsets(top: 0, left: (imageTextSpacing + contentXInset), bottom: 0, right: (imageTextSpacing + contentXInset))
imageEdgeInsets = UIEdgeInsets(top: 0, left: -imageTextSpacing, bottom: 0, right: imageTextSpacing)
titleEdgeInsets = UIEdgeInsets(top: 0, left: imageTextSpacing, bottom: 0, right: -imageTextSpacing)
}
}
It adds an extra horizontal margin from the View to the Image and from the Label to the View
I write code bewlow. It works well in product version. Supprot Swift 4.2 +
extension UIButton{
enum ImageTitleRelativeLocation {
case imageUpTitleDown
case imageDownTitleUp
case imageLeftTitleRight
case imageRightTitleLeft
}
func centerContentRelativeLocation(_ relativeLocation:
ImageTitleRelativeLocation,
spacing: CGFloat = 0) {
assert(contentVerticalAlignment == .center,
"only works with contentVerticalAlignment = .center !!!")
guard (title(for: .normal) != nil) || (attributedTitle(for: .normal) != nil) else {
assert(false, "TITLE IS NIL! SET TITTLE FIRST!")
return
}
guard let imageSize = self.currentImage?.size else {
assert(false, "IMGAGE IS NIL! SET IMAGE FIRST!!!")
return
}
guard let titleSize = titleLabel?
.systemLayoutSizeFitting(UIView.layoutFittingCompressedSize) else {
assert(false, "TITLELABEL IS NIL!")
return
}
let horizontalResistent: CGFloat
// extend contenArea in case of title is shrink
if frame.width < titleSize.width + imageSize.width {
horizontalResistent = titleSize.width + imageSize.width - frame.width
print("horizontalResistent", horizontalResistent)
} else {
horizontalResistent = 0
}
var adjustImageEdgeInsets: UIEdgeInsets = .zero
var adjustTitleEdgeInsets: UIEdgeInsets = .zero
var adjustContentEdgeInsets: UIEdgeInsets = .zero
let verticalImageAbsOffset = abs((titleSize.height + spacing) / 2)
let verticalTitleAbsOffset = abs((imageSize.height + spacing) / 2)
switch relativeLocation {
case .imageUpTitleDown:
adjustImageEdgeInsets.top = -verticalImageAbsOffset
adjustImageEdgeInsets.bottom = verticalImageAbsOffset
adjustImageEdgeInsets.left = titleSize.width / 2 + horizontalResistent / 2
adjustImageEdgeInsets.right = -titleSize.width / 2 - horizontalResistent / 2
adjustTitleEdgeInsets.top = verticalTitleAbsOffset
adjustTitleEdgeInsets.bottom = -verticalTitleAbsOffset
adjustTitleEdgeInsets.left = -imageSize.width / 2 + horizontalResistent / 2
adjustTitleEdgeInsets.right = imageSize.width / 2 - horizontalResistent / 2
adjustContentEdgeInsets.top = spacing
adjustContentEdgeInsets.bottom = spacing
adjustContentEdgeInsets.left = -horizontalResistent
adjustContentEdgeInsets.right = -horizontalResistent
case .imageDownTitleUp:
adjustImageEdgeInsets.top = verticalImageAbsOffset
adjustImageEdgeInsets.bottom = -verticalImageAbsOffset
adjustImageEdgeInsets.left = titleSize.width / 2 + horizontalResistent / 2
adjustImageEdgeInsets.right = -titleSize.width / 2 - horizontalResistent / 2
adjustTitleEdgeInsets.top = -verticalTitleAbsOffset
adjustTitleEdgeInsets.bottom = verticalTitleAbsOffset
adjustTitleEdgeInsets.left = -imageSize.width / 2 + horizontalResistent / 2
adjustTitleEdgeInsets.right = imageSize.width / 2 - horizontalResistent / 2
adjustContentEdgeInsets.top = spacing
adjustContentEdgeInsets.bottom = spacing
adjustContentEdgeInsets.left = -horizontalResistent
adjustContentEdgeInsets.right = -horizontalResistent
case .imageLeftTitleRight:
adjustImageEdgeInsets.left = -spacing / 2
adjustImageEdgeInsets.right = spacing / 2
adjustTitleEdgeInsets.left = spacing / 2
adjustTitleEdgeInsets.right = -spacing / 2
adjustContentEdgeInsets.left = spacing
adjustContentEdgeInsets.right = spacing
case .imageRightTitleLeft:
adjustImageEdgeInsets.left = titleSize.width + spacing / 2
adjustImageEdgeInsets.right = -titleSize.width - spacing / 2
adjustTitleEdgeInsets.left = -imageSize.width - spacing / 2
adjustTitleEdgeInsets.right = imageSize.width + spacing / 2
adjustContentEdgeInsets.left = spacing
adjustContentEdgeInsets.right = spacing
}
imageEdgeInsets = adjustImageEdgeInsets
titleEdgeInsets = adjustTitleEdgeInsets
contentEdgeInsets = adjustContentEdgeInsets
setNeedsLayout()
}
}
You can avoid much trouble by using this --
myButton.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;
myButton.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
This will align all your content automatically to left (or wherever you want it)
Swift 3:
myButton.contentHorizontalAlignment = UIControlContentHorizontalAlignment.left;
myButton.contentVerticalAlignment = UIControlContentVerticalAlignment.center;
An elegant way in Swift 3 and better to understand:
override func imageRect(forContentRect contentRect: CGRect) -> CGRect {
let leftMargin:CGFloat = 40
let imgWidth:CGFloat = 24
let imgHeight:CGFloat = 24
return CGRect(x: leftMargin, y: (contentRect.size.height-imgHeight) * 0.5, width: imgWidth, height: imgHeight)
}
override func titleRect(forContentRect contentRect: CGRect) -> CGRect {
let leftMargin:CGFloat = 80
let rightMargin:CGFloat = 80
return CGRect(x: leftMargin, y: 0, width: contentRect.size.width-leftMargin-rightMargin, height: contentRect.size.height)
}
override func backgroundRect(forBounds bounds: CGRect) -> CGRect {
let leftMargin:CGFloat = 10
let rightMargin:CGFloat = 10
let topMargin:CGFloat = 10
let bottomMargin:CGFloat = 10
return CGRect(x: leftMargin, y: topMargin, width: bounds.size.width-leftMargin-rightMargin, height: bounds.size.height-topMargin-bottomMargin)
}
override func contentRect(forBounds bounds: CGRect) -> CGRect {
let leftMargin:CGFloat = 5
let rightMargin:CGFloat = 5
let topMargin:CGFloat = 5
let bottomMargin:CGFloat = 5
return CGRect(x: leftMargin, y: topMargin, width: bounds.size.width-leftMargin-rightMargin, height: bounds.size.height-topMargin-bottomMargin)
}
I'm a little late to this party too, but I think I have something useful to add :o).
I created a UIButton subclass whose purpose is to be able to choose where the button's image is layout, either vertically or horizontally.
It means that you can make this kind of buttons :
Here the details about how to create these buttons with my class :
func makeButton (imageVerticalAlignment:LayoutableButton.VerticalAlignment, imageHorizontalAlignment:LayoutableButton.HorizontalAlignment, title:String) -> LayoutableButton {
let button = LayoutableButton ()
button.imageVerticalAlignment = imageVerticalAlignment
button.imageHorizontalAlignment = imageHorizontalAlignment
button.setTitle(title, for: .normal)
// add image, border, ...
return button
}
let button1 = makeButton(imageVerticalAlignment: .center, imageHorizontalAlignment: .left, title: "button1")
let button2 = makeButton(imageVerticalAlignment: .center, imageHorizontalAlignment: .right, title: "button2")
let button3 = makeButton(imageVerticalAlignment: .top, imageHorizontalAlignment: .center, title: "button3")
let button4 = makeButton(imageVerticalAlignment: .bottom, imageHorizontalAlignment: .center, title: "button4")
let button5 = makeButton(imageVerticalAlignment: .bottom, imageHorizontalAlignment: .center, title: "button5")
button5.contentEdgeInsets = UIEdgeInsets(top: 10, left: 10, bottom: 10, right: 10)
To do that, I added 2 attributes : imageVerticalAlignment and imageHorizontalAlignment. Off course, If your button only have an image or a title ... don't use this class at all !
I also added an attribute named imageToTitleSpacing which allow you to adjust space between title and image.
This class try his best to be compatible if you want to use imageEdgeInsets, titleEdgeInsets and contentEdgeInsets directly or in combinaison with the new layout attributes.
As @ravron explains us, I try my best to make the button content edge correct (as you can see with the red borders).
You can also use it in Interface Builder :
- Create a UIButton
- Change the button class
- Adjust Layoutable Attributes using "center", "top", "bottom", "left" or "right"
Here the code (gist) :
@IBDesignable
class LayoutableButton: UIButton {
enum VerticalAlignment : String {
case center, top, bottom, unset
}
enum HorizontalAlignment : String {
case center, left, right, unset
}
@IBInspectable
var imageToTitleSpacing: CGFloat = 8.0 {
didSet {
setNeedsLayout()
}
}
var imageVerticalAlignment: VerticalAlignment = .unset {
didSet {
setNeedsLayout()
}
}
var imageHorizontalAlignment: HorizontalAlignment = .unset {
didSet {
setNeedsLayout()
}
}
@available(*, unavailable, message: "This property is reserved for Interface Builder. Use 'imageVerticalAlignment' instead.")
@IBInspectable
var imageVerticalAlignmentName: String {
get {
return imageVerticalAlignment.rawValue
}
set {
if let value = VerticalAlignment(rawValue: newValue) {
imageVerticalAlignment = value
} else {
imageVerticalAlignment = .unset
}
}
}
@available(*, unavailable, message: "This property is reserved for Interface Builder. Use 'imageHorizontalAlignment' instead.")
@IBInspectable
var imageHorizontalAlignmentName: String {
get {
return imageHorizontalAlignment.rawValue
}
set {
if let value = HorizontalAlignment(rawValue: newValue) {
imageHorizontalAlignment = value
} else {
imageHorizontalAlignment = .unset
}
}
}
var extraContentEdgeInsets:UIEdgeInsets = UIEdgeInsets.zero
override var contentEdgeInsets: UIEdgeInsets {
get {
return super.contentEdgeInsets
}
set {
super.contentEdgeInsets = newValue
self.extraContentEdgeInsets = newValue
}
}
var extraImageEdgeInsets:UIEdgeInsets = UIEdgeInsets.zero
override var imageEdgeInsets: UIEdgeInsets {
get {
return super.imageEdgeInsets
}
set {
super.imageEdgeInsets = newValue
self.extraImageEdgeInsets = newValue
}
}
var extraTitleEdgeInsets:UIEdgeInsets = UIEdgeInsets.zero
override var titleEdgeInsets: UIEdgeInsets {
get {
return super.titleEdgeInsets
}
set {
super.titleEdgeInsets = newValue
self.extraTitleEdgeInsets = newValue
}
}
//Needed to avoid IB crash during autolayout
override init(frame: CGRect) {
super.init(frame: frame)
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
self.imageEdgeInsets = super.imageEdgeInsets
self.titleEdgeInsets = super.titleEdgeInsets
self.contentEdgeInsets = super.contentEdgeInsets
}
override func layoutSubviews() {
if let imageSize = self.imageView?.image?.size,
let font = self.titleLabel?.font,
let textSize = self.titleLabel?.attributedText?.size() ?? self.titleLabel?.text?.size(attributes: [NSFontAttributeName: font]) {
var _imageEdgeInsets = UIEdgeInsets.zero
var _titleEdgeInsets = UIEdgeInsets.zero
var _contentEdgeInsets = UIEdgeInsets.zero
let halfImageToTitleSpacing = imageToTitleSpacing / 2.0
switch imageVerticalAlignment {
case .bottom:
_imageEdgeInsets.top = (textSize.height + imageToTitleSpacing) / 2.0
_imageEdgeInsets.bottom = (-textSize.height - imageToTitleSpacing) / 2.0
_titleEdgeInsets.top = (-imageSize.height - imageToTitleSpacing) / 2.0
_titleEdgeInsets.bottom = (imageSize.height + imageToTitleSpacing) / 2.0
_contentEdgeInsets.top = (min (imageSize.height, textSize.height) + imageToTitleSpacing) / 2.0
_contentEdgeInsets.bottom = (min (imageSize.height, textSize.height) + imageToTitleSpacing) / 2.0
//only works with contentVerticalAlignment = .center
contentVerticalAlignment = .center
case .top:
_imageEdgeInsets.top = (-textSize.height - imageToTitleSpacing) / 2.0
_imageEdgeInsets.bottom = (textSize.height + imageToTitleSpacing) / 2.0
_titleEdgeInsets.top = (imageSize.height + imageToTitleSpacing) / 2.0
_titleEdgeInsets.bottom = (-imageSize.height - imageToTitleSpacing) / 2.0
_contentEdgeInsets.top = (min (imageSize.height, textSize.height) + imageToTitleSpacing) / 2.0
_contentEdgeInsets.bottom = (min (imageSize.height, textSize.height) + imageToTitleSpacing) / 2.0
//only works with contentVerticalAlignment = .center
contentVerticalAlignment = .center
case .center:
//only works with contentVerticalAlignment = .center
contentVerticalAlignment = .center
break
case .unset:
break
}
switch imageHorizontalAlignment {
case .left:
_imageEdgeInsets.left = -halfImageToTitleSpacing
_imageEdgeInsets.right = halfImageToTitleSpacing
_titleEdgeInsets.left = halfImageToTitleSpacing
_titleEdgeInsets.right = -halfImageToTitleSpacing
_contentEdgeInsets.left = halfImageToTitleSpacing
_contentEdgeInsets.right = halfImageToTitleSpacing
case .right:
_imageEdgeInsets.left = textSize.width + halfImageToTitleSpacing
_imageEdgeInsets.right = -textSize.width - halfImageToTitleSpacing
_titleEdgeInsets.left = -imageSize.width - halfImageToTitleSpacing
_titleEdgeInsets.right = imageSize.width + halfImageToTitleSpacing
_contentEdgeInsets.left = halfImageToTitleSpacing
_contentEdgeInsets.right = halfImageToTitleSpacing
case .center:
_imageEdgeInsets.left = textSize.width / 2.0
_imageEdgeInsets.right = -textSize.width / 2.0
_titleEdgeInsets.left = -imageSize.width / 2.0
_titleEdgeInsets.right = imageSize.width / 2.0
_contentEdgeInsets.left = -((imageSize.width + textSize.width) - max (imageSize.width, textSize.width)) / 2.0
_contentEdgeInsets.right = -((imageSize.width + textSize.width) - max (imageSize.width, textSize.width)) / 2.0
case .unset:
break
}
_contentEdgeInsets.top += extraContentEdgeInsets.top
_contentEdgeInsets.bottom += extraContentEdgeInsets.bottom
_contentEdgeInsets.left += extraContentEdgeInsets.left
_contentEdgeInsets.right += extraContentEdgeInsets.right
_imageEdgeInsets.top += extraImageEdgeInsets.top
_imageEdgeInsets.bottom += extraImageEdgeInsets.bottom
_imageEdgeInsets.left += extraImageEdgeInsets.left
_imageEdgeInsets.right += extraImageEdgeInsets.right
_titleEdgeInsets.top += extraTitleEdgeInsets.top
_titleEdgeInsets.bottom += extraTitleEdgeInsets.bottom
_titleEdgeInsets.left += extraTitleEdgeInsets.left
_titleEdgeInsets.right += extraTitleEdgeInsets.right
super.imageEdgeInsets = _imageEdgeInsets
super.titleEdgeInsets = _titleEdgeInsets
super.contentEdgeInsets = _contentEdgeInsets
} else {
super.imageEdgeInsets = extraImageEdgeInsets
super.titleEdgeInsets = extraTitleEdgeInsets
super.contentEdgeInsets = extraContentEdgeInsets
}
super.layoutSubviews()
}
}
Here is a simple example of how to use imageEdgeInsets This will make a 30x30 button with a hittable area 10 pixels bigger all the way around (50x50)
var expandHittableAreaAmt : CGFloat = 10
var buttonWidth : CGFloat = 30
var button = UIButton.buttonWithType(UIButtonType.Custom) as UIButton
button.frame = CGRectMake(0, 0, buttonWidth+expandHittableAreaAmt, buttonWidth+expandHittableAreaAmt)
button.imageEdgeInsets = UIEdgeInsetsMake(expandHittableAreaAmt, expandHittableAreaAmt, expandHittableAreaAmt, expandHittableAreaAmt)
button.setImage(UIImage(named: "buttonImage"), forState: .Normal)
button.addTarget(self, action: "didTouchButton:", forControlEvents:.TouchUpInside)
In Xcode 8.0 you can simply do it by changing insets in size inspector.
Select the UIButton -> Attributes Inspector -> go to size inspector and modify the content, image and title insets.
And if you want to change image on right side you can simply change the semantic property to Force Right-to-left in Attribute inspector .
In interface Builder. Select the UIButton -> Attributes Inspector -> Edge=Title and modify the edge insets
Also if you want to make something similar to
You need
1.Set horizontal and vertical alignment for button to
Find all required values and set
UIImageEdgeInsetsCGSize buttonSize = button.frame.size; NSString *buttonTitle = button.titleLabel.text; CGSize titleSize = [buttonTitle sizeWithAttributes:@{ NSFontAttributeName : [UIFont camFontZonaProBoldWithSize:12.f] }]; UIImage *buttonImage = button.imageView.image; CGSize buttonImageSize = buttonImage.size; CGFloat offsetBetweenImageAndText = 10; //vertical space between image and text [button setImageEdgeInsets:UIEdgeInsetsMake((buttonSize.height - (titleSize.height + buttonImageSize.height)) / 2 - offsetBetweenImageAndText, (buttonSize.width - buttonImageSize.width) / 2, 0,0)]; [button setTitleEdgeInsets:UIEdgeInsetsMake((buttonSize.height - (titleSize.height + buttonImageSize.height)) / 2 + buttonImageSize.height + offsetBetweenImageAndText, titleSize.width + [button imageEdgeInsets].left > buttonSize.width ? -buttonImage.size.width + (buttonSize.width - titleSize.width) / 2 : (buttonSize.width - titleSize.width) / 2 - buttonImage.size.width, 0,0)];
This will arrange your title and image on button.
Also please note update this on each relayout
Swift
import UIKit
extension UIButton {
// MARK: - UIButton+Aligment
func alignContentVerticallyByCenter(offset:CGFloat = 10) {
let buttonSize = frame.size
if let titleLabel = titleLabel,
let imageView = imageView {
if let buttonTitle = titleLabel.text,
let image = imageView.image {
let titleString:NSString = NSString(string: buttonTitle)
let titleSize = titleString.sizeWithAttributes([
NSFontAttributeName : titleLabel.font
])
let buttonImageSize = image.size
let topImageOffset = (buttonSize.height - (titleSize.height + buttonImageSize.height + offset)) / 2
let leftImageOffset = (buttonSize.width - buttonImageSize.width) / 2
imageEdgeInsets = UIEdgeInsetsMake(topImageOffset,
leftImageOffset,
0,0)
let titleTopOffset = topImageOffset + offset + buttonImageSize.height
let leftTitleOffset = (buttonSize.width - titleSize.width) / 2 - image.size.width
titleEdgeInsets = UIEdgeInsetsMake(titleTopOffset,
leftTitleOffset,
0,0)
}
}
}
}
I'm a little late to this party, but I think I have something useful to add.
Kekoa's answer is great but, as RonLugge mentions, it can make the button no longer respect sizeToFit or, more importantly, can cause the button to clip its content when it is intrinsically sized. Yikes!
First, though,
A brief explanation of how I believe imageEdgeInsets and titleEdgeInsets work:
The docs for imageEdgeInsets have the following to say, in part:
Use this property to resize and reposition the effective drawing rectangle for the button image. You can specify a different value for each of the four insets (top, left, bottom, right). A positive value shrinks, or insets, that edge—moving it closer to the center of the button. A negative value expands, or outsets, that edge.
I believe that this documentation was written imagining that the button has no title, just an image. It makes a lot more sense thought of this way, and behaves how UIEdgeInsets usually do. Basically, the frame of the image (or the title, with titleEdgeInsets) is moved inwards for positive insets and outwards for negative insets.
OK, so what?
I'm getting there! Here's what you have by default, setting an image and a title (the button border is green just to show where it is):
When you want spacing between an image and a title, without causing either to be crushed, you need to set four different insets, two on each of the image and title. That's because you don't want to change the sizes of those elements' frames, but just their positions. When you start thinking this way, the needed change to Kekoa's excellent category becomes clear:
@implementation UIButton(ImageTitleCentering)
- (void)centerButtonAndImageWithSpacing:(CGFloat)spacing {
CGFloat insetAmount = spacing / 2.0;
self.imageEdgeInsets = UIEdgeInsetsMake(0, -insetAmount, 0, insetAmount);
self.titleEdgeInsets = UIEdgeInsetsMake(0, insetAmount, 0, -insetAmount);
}
@end
But wait, you say, when I do that, I get this:
Oh yeah! I forgot, the docs warned me about this. They say, in part:
This property is used only for positioning the image during layout. The button does not use this property to determine
intrinsicContentSizeandsizeThatFits:.
But there is a property that can help, and that's contentEdgeInsets. The docs for that say, in part:
The button uses this property to determine
intrinsicContentSizeandsizeThatFits:.
That sounds good. So let's tweak the category once more:
@implementation UIButton(ImageTitleCentering)
- (void)centerButtonAndImageWithSpacing:(CGFloat)spacing {
CGFloat insetAmount = spacing / 2.0;
self.imageEdgeInsets = UIEdgeInsetsMake(0, -insetAmount, 0, insetAmount);
self.titleEdgeInsets = UIEdgeInsetsMake(0, insetAmount, 0, -insetAmount);
self.contentEdgeInsets = UIEdgeInsetsMake(0, insetAmount, 0, insetAmount);
}
@end
And what do you get?
Looks like a winner to me.
Working in Swift and don't want to do any thinking at all? Here's the final version of the extension in Swift:
extension UIButton {
func centerTextAndImage(spacing: CGFloat) {
let insetAmount = spacing / 2
imageEdgeInsets = UIEdgeInsets(top: 0, left: -insetAmount, bottom: 0, right: insetAmount)
titleEdgeInsets = UIEdgeInsets(top: 0, left: insetAmount, bottom: 0, right: -insetAmount)
contentEdgeInsets = UIEdgeInsets(top: 0, left: insetAmount, bottom: 0, right: insetAmount)
}
}
Source: Stackoverflow.com