Interpolate text with custom foreground style in SwiftUI
SwiftUI lets us style portions of text by interpolating Text
inside another Text
and applying available text modifiers, such as foregroundColor()
or font()
.
Starting from iOS 17 we can apply more intricate styling to ranges within a Text
view with foregroundStyle().
For example, we can color a word with a gradient.


struct ContentView: View {
let gradient = LinearGradient(
colors: [.blue, .green],
startPoint: .leading,
endPoint: .trailing
)
var body: some View {
Text("Hello, \(Text("world").foregroundStyle(gradient))!")
.bold()
.font(.title)
.textCase(.uppercase)
}
}
And if you are interested in more advanced text styling, you can take a look at the new ShaderLibrary. In iOS 17 Metal shaders get automatically converted to ShapeStyle
s that then can be passed to foregroundStyle()
.


Check out our book!
Integrating SwiftUI into UIKit Apps
Integrating SwiftUI intoUIKit Apps
UPDATED FOR iOS 17!
A detailed guide on gradually adopting SwiftUI in UIKit projects.
- Discover various ways to add SwiftUI views to existing UIKit projects
- Use Xcode previews when designing and building UI
- Update your UIKit apps with new features such as Swift Charts and Lock Screen widgets
- Migrate larger parts of your apps to SwiftUI while reusing views and controllers built in UIKit