Swift 4.2 implemented views programmatically only
I have created a stack view and put four buttons in it but they are just simple buttons without any gray background.
I want to achieve the exact four buttons in my stackview equally centered as like as -
button.contentEdgeInset //Not working
This is what I tried -
let feedbackButton:UIButton = {
let origImage = UIImage(named: "feedback")
let tintedImage = origImage?.withRenderingMode(.alwaysTemplate)
let button = UIButton(frame: CGRect(x: 0, y: 0, width: 100, height: 50))
button.translatesAutoresizingMaskIntoConstraints = false
button.setBackgroundImage(tintedImage, for: UIControl.State.normal)
button.tintColor = .systemPinkColor
button.layer.cornerRadius = 7
button.backgroundColor = UIColor.lightGray.withAlphaComponent(0.5)
button.contentEdgeInsets = UIEdgeInsets(top: 0, left: 40, bottom: 0, right: 40)
// button.imageEdgeInsets = UIEdgeInsets(top: 0, left: 50, bottom: 0, right: 50)
// button.titleEdgeInsets = UIEdgeInsets(top: 0, left: 50, bottom: 0, right: 50)
button.clipsToBounds = true
button.addTarget(self, action: #selector(feedbackFaculty), for: .touchUpInside)
return button
}()
Output -
The button's image gets stretched along with insets. button.imageInsets and button.titleInsets not working.
Help me out. Thanks!
The background image doesn't follow the content insets. So this line:
button.setBackgroundImage(tintedImage, for: UIControl.State.normal)
needs to be changed to:
button.setImage(tintedImage, for: .normal)
Also, here's a couple things to note (per Apple's UIButton documentation):
Supply a title string or image; size the button appropriately for your content.
Which implies that you cannot set an image and title at the same time, this might be why you're noticing titleInset and imageInset not playing nicely.
However, if you just set appropriate constraints for the buttons and set insets for the title OR the image you should be able to get the look you want. Also make sure your stack view is configured to use equal spacing for it's distribution.
The imageInset for each button in the image below is (20, 20, 20, 20).
Related
One way to left-align a UIButton's title is to set the contentHorizontalAlignment to .left (or .leading). But this places the title flush with the left edge of the button with no margin. A common way to add some margin is to set the contentEdgeInstets.
But my button extends from once edge of the screen to the other, so I would like the left and right margins to honor the layoutMargins. These margins might change as the view is resized or the device is rotated.
Is there a way to set the button's insets to observe these margins? Or should I create a button from a custom view where I can use my own label and anchor it to the layoutMarginsGuide?
I guess you can manually set the margin of the button using titleEdgeInsets to match the inset of the Cancel Button.
Have a look at the following, the two buttons are exactly the same aside from the origin.y and the titleEdgeInsets:
let view = UIView(frame: CGRect(x: 0, y: 0, width: 400, height: 400))
view.backgroundColor = .white
let button = UIButton(frame: CGRect(x: 40, y: 40, width: 200, height: 80))
button.setTitle("Some really long title", for: .normal)
button.backgroundColor = .red
button.setTitleColor(.black, for: .normal)
let button2 = UIButton(frame: CGRect(x: 40, y: 160, width: 200, height: 80))
button2.setTitle("Some really long title", for: .normal)
button2.backgroundColor = .red
button2.setTitleColor(.black, for: .normal)
button2.titleEdgeInsets = UIEdgeInsets(top: 20, left: 20, bottom: 20, right: 20)
view.addSubview(button)
view.addSubview(button2)
It gives the following result:
Hope this helps :)
A subclassed button may work for you...
class RespectSuperviewMarginButton: UIButton {
override func layoutSubviews() {
super.layoutSubviews()
if let sv = superview {
contentEdgeInsets.left = sv.layoutMargins.left
}
}
}
My current best answer is: no, this is not possible without subclassing.
The subclass implementation I am currently using is simple enough:
class LayoutMarginRespectingButton: UIButton {
override func layoutSubviews() {
super.layoutSubviews()
contentEdgeInsets = layoutMargins
}
}
How can i display the UIButton titleLabel text to bottom of its frame. Currently i am using the UIEdge top margin and setting the negative UIButton image width, result is not as expected. i also want to place the image center to its frame.
`
let leftButton: UIButton = {
let button = UIButton()
button.layer.borderWidth = 2
button.layer.borderColor = UIColor.ublGray1().cgColor
button.setImage(UIImage.init(named: leftButtonImage)?.withRenderingMode(.alwaysTemplate), for: .normal)
button.tintColor = UIColor.cerulean()
button.layer.masksToBounds = false
button.layer.cornerRadius = 37
button.translatesAutoresizingMaskIntoConstraints = false
button.setTitle(leftButtonTitle, for: .normal)
button.titleEdgeInsets = UIEdgeInsets(top: 110, left: -26, bottom: 0, right: 0)[![enter image description here][1]][1]
button.imageEdgeInsets = UIEdgeInsets(top: 0, left: 10, bottom: 0, right: 0)
button.setTitleColor(UIColor.charcoalGrey(), for: .normal)
button.titleLabel?.font = UIFont.aspiraMedium(size: 16)
return button
}()
`
You can try something like this.
How about setting "Title Insets" - bottom - to a negative number? It works.
But if you want it to stick to the bottom of the frame, it won't work, so... how about this:
bt.titleEdgeInsets.top = (bt.imageView?.safeAreaInsets.bottom)!
or bt.titleEdgeInsets.top = (bt.imageView?.alignmentRectInsets.bottom)!
How do I superimpose a button title on top of a button image programmatically and position them both to be dead center in the button frame overlapping each other?
let button = UIButton()
button.setImage(coolpic, for .normal)
button.contentMode = .center
button.setTitle("tap me", for: .normal)
// a bunch of constraints and styling that define the frame
Do I have to set the image as a background image? Do I need to create a UILabel as the button title and add it as a subview of the button?
Thanks!
You can do this with image insets, but I like to use extensions for things like this - that way I can use them anywhere in my app without subclassing. Here's my code for setting an image position in a UIButton:
extension UIButton {
func setImagePosition(at pos:ButtonImagePosition, withAdjustment adj:CGFloat?) {
let _adj:CGFloat = (adj != nil) ? adj! : 0
let width = frame.size.width
var imgWidth = self.imageView?.frame.size.width
switch pos {
case .center:
self.imageEdgeInsets = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
case .right:
imgWidth = imgWidth! - _adj
self.imageEdgeInsets = UIEdgeInsets(top: 0, left: width - imgWidth!, bottom: 0, right: 0)
case .left:
self.imageEdgeInsets = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: width + imgWidth!)
}
}
}
enum ButtonImagePosition {
case left
case right
case center
}
Then I call it as follows
button.setImagePosition(at: .right, withAdjustment: nil)
You could try:
let button = UIButton()
button.setImage(UIImage(named:"yourImage.png")?, for: .normal)
button.setTitle("MyTitle", for: .normal)
button.titleLabel?.font = button.titleLabel?.font.withSize(15)
button.titleLabel?.textAlignment = .center
I am trying to add a "calendar day" image to surround some text on a clickable UI button like so:
let button = UIButton()
let X_Offset : CGFloat = (95 * CGFloat(buttonCount) ) + 10
let scrollHeight = scrollView.bounds.height
button.frame = CGRect(x: X_Offset, y: scrollHeight/6, width: 70, height: 60)
let buttonText = event.startTime.toShortDayOfWeekString() + "\n" + event.startTime.toShortDayOfMonthString()
button.titleLabel!.lineBreakMode = .byWordWrapping
button.titleLabel!.textAlignment = .center
button.setTitle(buttonText, for: .normal)
button.tag = i
button.backgroundColor = CompanyColor.Red.color
let image = UIImage(named: "calendarDay")
button.setBackgroundImage(image, for: .normal)
button.titleLabel?.font = UIFont(name: "Roboto", size: 14)
button.layer.cornerRadius = 8
button.clipsToBounds = true
But the image is encroaching on the text a bit too much:
How can I get the background image to scale up slightly and leave enough gap for the text?
I think what you what you are looking for is setting imageEdgeInsets for UIButton. Setting of these properties lets you move image around besides its default position. You have to play around to get your desired result.
There are two ways you can do this. One is using Interface Builder and other one is programmatically. Interface builder is easiest way to go I guess. Below image shows how can you set those properties for UIButton.
or try using programmatically like this
button.imageEdgeInsets = UIEdgeInsets(top: -10, left: 32, bottom: -10, right: 50)
You can move title like this
button.titleEdgeInsets = UIEdgeInsets(top: 0, left:0, bottom: 0, right: 20)
Note: Setting UIEdgeInsets like this might have different result if you have dynamic size button e.g. for different screen size. Always make sure that it looks as expected for all screen sizes.
I have this UIButton and an image to fit in.
I don't want that the image take all the space inside the button but just a little part of it right in the center, but if I resize the button it will resize the image too.
How can I do that, is there an option to set whatever dimension I want independently from the size of the UIButton?
Thanks!
This can be done through code in the following way:
let imageSize:CGSize = CGSize(width: 20, height: 20)
let button:UIButton = UIButton(type: UIButton.ButtonType.custom)
button.frame = CGRect(x: 200, y: 200, width: 60, height: 60)
button.backgroundColor = UIColor.yellow
button.setImage(UIImage(named: "chat.png"), for: UIControl.State.normal)
// The below line will give you what you want
button.imageEdgeInsets = UIEdgeInsets(
top: (button.frame.size.height - imageSize.height) / 2,
left: (button.frame.size.width - imageSize.width) / 2,
bottom: (button.frame.size.height - imageSize.height) / 2,
right: (button.frame.size.width - imageSize.width) / 2)
self.view.addSubview(button)
This way, you can achieve what you wanted.
I couldn't get the button's imageView to resize until I used contentHorizontalAlignment and contentVerticalAlignment both set to .fill. Then using imageEdgeInsets I repositioned the image.
let button = UIButton()
let image = UIImage(systemName: "bag.badge.plus")
button.setImage(image, for: .normal)
button.contentHorizontalAlignment = .fill
button.contentVerticalAlignment = .fill
button.imageEdgeInsets = UIEdgeInsets(top: 6, left: 6, bottom: 10, right: 10)
Result:
You can experiment with image view insets. Every UIButton has a property imageView.
In Swift 3 you can do this like so:
//let button = UIButton()
button.imageView?.backgroundColor = UIColor.red
button.imageEdgeInsets = UIEdgeInsetsMake(10, 10, 10, 10)
red background is just so you know what is changing
I would do it this way:
A UIButton is just a UIView. You can simply add a UIImageView with a set image and call addSubview on the UIButton.
Taking into account what KVISH said before i have implemented this and it worked as expected. I posted this because Houman asked for an example.
//grab the image using the name of the pic
var image = UIImage(named: "picture")
//set the size for the image
image = image?.resize(toWidth: 18)
image = image?.resize(toHeight: 18)
//set the image to the button
buttonName.setImage(image, for: UIControlState.normal)
//adjust the position
buttonName.imageEdgeInsets = UIEdgeInsetsMake(8,16,9,0)
As of iOS 13, when using SF Symbols, I prefer this:
let button = UIButton()
let font = UIFont.systemFont(ofSize: 30) // <- make it larger, smaller, whatever you want.
let config = UIImage.SymbolConfiguration(font: font)
let image = UIImage(systemName: "bag.badge.plus", withConfiguration: config)
button.setImage(image, for: .normal)
These can be achieved by adding imageEdgeInsets to a UIButton.
In swift4.2
button.imageEdgeInsets = UIEdgeInsets(top: 10, left: 10, bottom: 10, right: 10)