Live Activities & Dynamic Island Enhancements

 import ActivityKit
 import SwiftUI
 import WidgetKit
 
−// Pre-iOS 27 approach — no Button with AppIntent inside Dynamic Island expanded bottom
−// Buttons inside Dynamic Island were limited to Link/URL-based deep links only
−
+// MARK: - Attributes
 struct DeliveryAttributes: ActivityAttributes {
     public struct ContentState: Codable, Hashable {
         var statusMessage: String
         var progressFraction: Double
         var estimatedMinutes: Int
     }
     var orderNumber: String
 }
 
+// MARK: - Widget Extension: Live Activity View
 struct DeliveryLiveActivityView: Widget {
     var body: some WidgetConfiguration {
         ActivityConfiguration(for: DeliveryAttributes.self) { context in
+            // Lock Screen / Banner UI
             HStack {
                 Image(systemName: "shippingbox.fill")
                     .foregroundStyle(.orange)
                 VStack(alignment: .leading) {
                     Text(context.state.statusMessage)
                         .font(.headline)
                     ProgressView(value: context.state.progressFraction)
                         .tint(.orange)
                 }
                 Spacer()
                 Text("\(context.state.estimatedMinutes)m")
                     .font(.caption)
                     .foregroundStyle(.secondary)
             }
             .padding()
             .activityBackgroundTint(.black.opacity(0.8))
         } dynamicIsland: { context in
             DynamicIsland {
+                // Expanded regions
                 DynamicIslandExpandedRegion(.leading) {
                     Image(systemName: "shippingbox.fill")
                         .foregroundStyle(.orange)
                         .font(.title2)
                 }
                 DynamicIslandExpandedRegion(.trailing) {
                     Text("\(context.state.estimatedMinutes)m")
                         .font(.caption)
                         .foregroundStyle(.secondary)
                 }
                 DynamicIslandExpandedRegion(.center) {
                     Text(context.state.statusMessage)
                         .font(.headline)
                         .lineLimit(1)
                 }
                 DynamicIslandExpandedRegion(.bottom) {
                     VStack(spacing: 8) {
                         ProgressView(value: context.state.progressFraction)
                             .tint(.orange)
−                        // Pre-iOS 27: had to use Link for navigation, no AppIntent button
−                        Link(destination: URL(string: "myapp://track")!) {
+                        // iOS 27: Button with borderedProminent inside expanded island
+                        Button(intent: TrackDeliveryIntent()) {
                             Label("Track Order", systemImage: "location.fill")
                         }
−                        .foregroundStyle(.orange)
+                        .buttonStyle(.borderedProminent)
+                        .tint(.orange)
                     }
                 }
             } compactLeading: {
                 Image(systemName: "shippingbox.fill")
                     .foregroundStyle(.orange)
             } compactTrailing: {
                 Text("\(context.state.estimatedMinutes)m")
                     .font(.caption2)
             } minimal: {
                 Image(systemName: "shippingbox.fill")
                     .foregroundStyle(.orange)
             }
         }
     }
+}
+
+// MARK: - Starting a Live Activity
+func startDeliveryActivity(orderNumber: String) throws {
+    let attributes = DeliveryAttributes(orderNumber: orderNumber)
+    let initialState = DeliveryAttributes.ContentState(
+        statusMessage: "Order picked up",
+        progressFraction: 0.2,
+        estimatedMinutes: 30
+    )
+    let content = ActivityContent(
+        state: initialState,
+        staleDate: Date.now.addingTimeInterval(300)
+    )
+    let activity = try Activity.request(
+        attributes: attributes,
+        content: content,
+        pushType: .token
+    )
+    print("Started activity: \(activity.id)")
 }