Handling Background Fetch for iOS 15 Using SwiftUI and Combine
I'm dealing with I've hit a wall trying to I'm deploying to production and Hey everyone, I'm running into an issue that's driving me crazy... I've been banging my head against this for hours. I'm implementing a background fetch in my SwiftUI app for iOS 15, but I'm working with issues with the fetch not working as expected. I have followed the Apple documentation on enabling background modes and using the BackgroundTasks framework. However, when I run the app and trigger the background fetch, it seems that the `performFetchWithCompletionHandler` isn't being called. I've added the required capabilities in Xcode and set up the appropriate plist entries. Here's a snippet of my implementation: ```swift import SwiftUI import BackgroundTasks @main struct MyApp: App { init() { // Register the task BGTaskScheduler.shared.register(forTaskWithIdentifier: "com.example.myapp.fetch", using: nil) { task in self.handleAppRefresh(task: task as! BGAppRefreshTask) } } var body: some Scene { WindowGroup { ContentView() } } func handleAppRefresh(task: BGAppRefreshTask) { // Schedule the next fetch scheduleAppRefresh() let queue = OperationQueue() queue.maxConcurrentOperationCount = 1 // Perform fetch operation queue.addOperation { // Simulate a data fetch print("Fetching data...") // Call the completion handler task.setTaskCompleted(success: true) } } func scheduleAppRefresh() { let request = BGAppRefreshTaskRequest(identifier: "com.example.myapp.fetch") request.earliestBeginDate = Date(timeIntervalSinceNow: 15 * 60) do { try BGTaskScheduler.shared.submit(request) } catch { print("Could not schedule app refresh: \(behavior)") } } } ``` Despite calling `scheduleAppRefresh`, I’m not seeing the fetch task being executed in the background. I also checked the logs, and there's no indication that the task is ever triggered. I've ensured that my simulator is set to allow background app refresh, and I’ve tested on physical devices as well. I also implemented the `Info.plist` entry for `UIBackgroundModes` with `fetch` and added `BGTaskSchedulerPermittedIdentifiers` with the appropriate identifier. Could there be something I'm missing in the configuration or the way I'm handling the task? Is there a specific setting that might cause the background fetch not to trigger? Any insights would be greatly appreciated! For context: I'm using Swift on Windows. What's the best practice here? For context: I'm using Swift on Linux. Any pointers in the right direction? This issue appeared after updating to Swift stable. I'd love to hear your thoughts on this. I recently upgraded to Swift latest. What's the correct way to implement this?