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Swift is an powerful, intuitive programming language for macOS, iOS, watchOS, and tvOS. This open-source language uses modern concepts but aims to be easy to use. It’s approach to safety, speed, and software design patterns make it a fantastic choice when considering your next project. In example we will tackle the task of increasing text size in your Swift application, a normally straightforward task that could perplex beginners in the field.
Text size plays a crucial role in UI design. It sometimes provides the final touch that makes your application look more professional and attractive. Often, we find ourselves in situations where we need to increase the text size to make it more readable for a segment of users or maybe just to place emphasis on certain UI elements.
Understanding Swift UIFont
To begin, let’s talk about UIFont, the object you’ll be dealing with mostly. UIFont is a part of UIKit framework in Swift, working as an abstract interface to the fonts available in the system. Every time you need to alter the text size, you deal with UIFont.
To change the size of text, we need to use the UIFont class, more specifically, the method ‘systemFontOfSize’. This method returns a font object that can be used for system UI items and short pieces of text. Its syntax goes like this:
let myFont = UIFont.systemFont(ofSize: 18)
Implementing Text Size Change
With a good understanding of UIFont, let’s use it to implement the text size change. The process of implementing this is straightforward, let’s take a case of changing the size of UILabel’s text.
var myLabel = UILabel() myLabel.font = UIFont.systemFont(ofSize: 24)
Here, we first create an instance of UILabel. We then set its font to a system font with the size of 24 points. This results in the label’s text appearing larger than the default size.
Other UI elements follow the same concept. Just replace UILabel with any UI element you want to modify and set its font property to the desired size.
Custom Fonts and Sizes in Swift
Possibly, you may want to use a custom font along with controlling its size. Swift makes this process simple. First, ensure your preferred font file (.ttf or .otf) is in your project.
To set your custom font and size, you might use the following:
myLabel.font = UIFont(name: "YourFontName", size: 24)
In the above code, “YourFontName” should be replaced with the name of your font. Remember to include the correct file extension.
In this guide, we have thoroughly discussed manipulating text sizes in Swift. Whether it’s built-in system fonts or custom fonts, Swift’s UIFont class offers you all the tools required to make your UI text exactly the way you want it. However, while doing these tweaks, always remember that readability should be your top priority.