This content originally appeared on Level Up Coding - Medium and was authored by KP
First let’s introduce some terms here:
UIButton.Configuration:
It specifies the behaviour and appearance of the button. Read more here.
There are 4 types of configurations:
1. Tinted- Gives a tinted background
2. Filled- Gives a filled background
3. Gray- Gray background
4. Plain- Plain old button
var config = UIButton.Configuration.filled()
config = UIButton.Configuration.tinted()
config = UIButton.Configuration.gray()
config = UIButton.Configuration.plain()
UIButton.Configuration allows you to set several custom properties. Let’s go through them one by one:
- cornerStyle :
It helps set the corner radius properties of the button.
Available Styles are:
1. Fixed
2. Dynamic
3. Small/Large/Medium
4. capsule
config.cornerStyle = .fixed
config.cornerStyle = .dynamic
config.cornerStyle = .small / .large / .medium
config.cornerStyle = .capsule
- title, attributedTitle:
Set the title easily using this property. attributedTitle uses the new AttributedString introduced in iOS 15.0 - subtitle:
Set the subtitle of the button using this property.
Set the titlePadding property to adjust spacing between title and subtitle.
config.title = "Hey There!"
var attText = AttributedString.init("Hey There!")
attText.obliqueness = 0.2 // To set the slant of the text
attText.font = UIFont.systemFont(ofSize: 16.0, weight: .bold)
config.attributedTitle = attTextconfig.subtitle = “iOS Developer”
- buttonSize:
To set the size of the button to predefined values
config.buttonSize = .large
config.buttonSize = .small
config.buttonSize = .medium
config.buttonSize = .mini
Finally assign this configuration to the button.
let button = UIButton.init(type: .system)
button.configuration = config
Voila!! The image below shows the configuration in title and size in the subtitle of the buttons:
- Image:
Now the flexibility to set the image padding and position is in our hands.
config.image = UIImage.init(systemName: “snowflake”)
config.imagePlacement = .trailing
config.imagePadding = 5
- showsActivityIndicator:
It shows an activity indicator in place of the image in the button.
You can simply choose the image’s placement and padding to show this.
config.imagePadding = 5
config.showsActivityIndicator = true
Note: This doesn’t require you to set an image in the button before
- configurationUpdateHandler:
It is a closure to update the configuration of a button. Read here
Inside the configurationUpdateHandler, we can change the button’s configuration to change it’s properties.
In line 5 we use the new titleTextAttributesTransformer to update the attributed title. Read here.
In line 11 we can use the new imageColorTransformer to update the color of the image in the button. And finally we assign this configuration to the button.
Where to go from here?
Definitely apple documentation for UIButton.Configuration. Gives a great overview of the whole thing and play around with the button.
Connect with me on:
LinkedIn: Keerthika Priya
UIButton in iOS 15 was originally published in Level Up Coding on Medium, where people are continuing the conversation by highlighting and responding to this story.
This content originally appeared on Level Up Coding - Medium and was authored by KP
KP | Sciencx (2021-07-06T23:59:43+00:00) UIButton in iOS 15. Retrieved from https://www.scien.cx/2021/07/06/uibutton-in-ios-15/
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