SwiftUI
•
• 1 min read

How to show loading indicator in SwiftUI

Khoa Pham
Written by
Khoa Pham
How to show loading indicator in SwiftUI

Issue #486

import SwiftUI

struct ActivityIndicator: UIViewRepresentable {
    @Binding var isAnimating: Bool
    let style: UIActivityIndicatorView.Style

    func makeUIView(context: UIViewRepresentableContext<ActivityIndicator>) -> UIActivityIndicatorView {
        return UIActivityIndicatorView(style: style)
    }

    func updateUIView(_ uiView: UIActivityIndicatorView, context: UIViewRepresentableContext<ActivityIndicator>) {
        isAnimating ? uiView.startAnimating() : uiView.stopAnimating()
    }
}

struct ActivityIndicator_Previews: PreviewProvider {
    static var previews: some View {
        ActivityIndicator(isAnimating: .constant(true), style: .large)
    }
}
Khoa Pham
Written by
Khoa Pham

I’m open source contributor, writer, speaker and product maker.

Start the conversation

Related

See all SwiftUI
Swift SwiftUI
•

How to observe optional ObservableObject in SwiftUI

Issue #988

When working with Core Data, there are times we have optional NSManagedObject to pass around. These objects conform to ObservableObject, and in SwiftUI we can’t @ObservedObject on optional ObservableObject

One way we can workaround …

Khoa Pham
Written by
Khoa Pham
Swift MacOS SwiftUI
•

How to clear background for TextField inside list in macOS

Issue #986

When using TextField in SwiftUI List on Mac, it has unwanted background color when focused. We can turn it off using introspection or a custom TextField wrapper

TextField("Search", text: $searchText)
    .introspect(.textField, on: …

Khoa Pham
Written by
Khoa Pham
Swift SwiftUI
•

How to conditionally render widgets in iOS

Issue #984

The WidgetBundle lets us expose multiple widgets from a single widget extension

It uses WidgetBundleBuilder to constructs a widget bundle’s body.

In iOS 18, if we include ControlWidget then we need to check iOSApplicationExtension iOS 18. …

Khoa Pham
Written by
Khoa Pham
IOS Swift SwiftUI
•

How to open app with Control Widget on iOS 18

Issue #983

In iOS 18, we can make Control Widget in Widget extension

import WidgetKit
import SwiftUI

@available(iOS 18.0, *)
struct BookControlWidget: ControlWidget {
    var body: some ControlWidgetConfiguration {
        StaticControlConfiguration …

Khoa Pham
Written by
Khoa Pham