Resizing SF Symbols in SwiftUI
SF Symbols have become an essential part of iOS and macOS app design, providing a consistent set of scalable icons. In SwiftUI, you can easily work with SF Symbols using the `Image(systemName:)` initializer. However, when it comes to resizing these symbols, it’s crucial to use the right modifiers to maintain their symbol characteristics and ensure proper alignment with text. In this guide, we’ll explore how to resize SF Symbols in SwiftUI effectively.
Using the `font()` Modifier:
To resize an SF Symbol in SwiftUI, you should avoid using the `resizable()` modifier, as it can cause the symbol to lose its properties as a symbol image. Instead, you can use the `font()` modifier to set the desired size for the symbol. This method ensures that the symbol remains a true symbol image and aligns correctly with text.
Image(systemName: "paperplane")
.font(.title)
In this example, we set the symbol’s size to `.title`, which corresponds to a semantic font size that is suitable for its context.
Explicitly Setting the Size:
If you need more precise control over the size of the SF Symbol, you can explicitly set it in points using the `.system(size:)` modifier:
Image(systemName: "tray")
.font(.system(size: 20))
Here, we set the size to 20 points, ensuring that the SF Symbol is displayed at the desired dimension.
Using the `imageScale()` Modifier:
To scale the image relative to its font size, you can use the `imageScale()` modifier. If you don’t explicitly set the font size, the symbol will inherit the font size from the current environment.
Image(systemName: "doc")
.font(.body)
.imageScale(.small)
In this code, we set the image scale to `.small`, which scales the symbol relative to the `.body` font size.
Conclusion:
Resizing SF Symbols in SwiftUI is a fundamental aspect of designing your app’s user interface. By using the `font()` modifier with semantic font sizes or explicitly setting the size in points, you can ensure that your SF Symbols maintain their symbol properties and align correctly with text. Additionally, the `imageScale()` modifier allows you to scale symbols relative to their font size. These techniques empower you to create visually appealing and consistent UIs with SF Symbols in your SwiftUI applications.