wkrefreshbackgroundtask

WatchOS 3 WKApplicationRefreshBackgroundTask didReceiveChallenge

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问题 I have finally (ignoring the sample code which I never saw work past "application task received, start URL session") managed to get my WatchOS3 code to start a background URL Session task as follows: func handle(_ backgroundTasks: Set<WKRefreshBackgroundTask>) { for task in backgroundTasks { if let refreshTask = task as? WKApplicationRefreshBackgroundTask { // this task is completed below, our app will then suspend while the download session runs print("application task received, start URL

Updating complication with Swift 3 and background task

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问题 For watchOS 3, Apple suggests updating the complication with WKRefreshBackgroundTask instead of using getNextRequestedUpdateDate . How can I determine the time between two updates using the new approach? I would only hack my data requesting (from an url) into getCurrentTimelineEntry and would update the complication, but I think that's not really what Apple would recommend. A short code example would be a big help. 回答1: I generally covered this in a different answer, but I'll address your

When WKExtension.scheduleBackgroundRefresh is supposed to call scheduledCompletion handler?

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问题 I'm trying to schedule background task with such line: WKExtension.shared().scheduleBackgroundRefresh(withPreferredDate: Date(timeIntervalSinceNow: TimeInterval(5) * 60), userInfo: nil, scheduledCompletion: self.scheduledCompletion) where func scheduledCompletion(error: Error?) { if error == nil { print("successfully scheduled application background refresh") } else { print("error scheduling background refresh, error: \(error)") } } According to documentation: scheduledCompletion A block that

Updating complication with Swift 3 and background task

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For watchOS 3, Apple suggests updating the complication with WKRefreshBackgroundTask instead of using getNextRequestedUpdateDate . How can I determine the time between two updates using the new approach? I would only hack my data requesting (from an url) into getCurrentTimelineEntry and would update the complication, but I think that's not really what Apple would recommend. A short code example would be a big help. I generally covered this in a different answer , but I'll address your specific question here. You're right that you shouldn't hack the complication controller to do any

WKURLSessionRefreshBackgroundTask isn't called when attempting to do background refreshes in watchOS

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I'm working on a complication to get scheduled data from a web service. Every 20-30 minutes (or manually), I am scheduling a WKRefreshBackgroundTask to do this. As suggested by Apple, I want the OS to handle the fetching of this data via a background NSURLSession . This is the function I use to download the data I need: func scheduleURLSession() { print("\nScheduling URL Session...") let backgroundSessionConfig:URLSessionConfiguration = URLSessionConfiguration.background(withIdentifier: NSUUID().uuidString) backgroundSessionConfig.sessionSendsLaunchEvents = true let backgroundSession =

WKURLSessionRefreshBackgroundTask isn't called when attempting to do background refreshes in watchOS

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问题 I'm working on a complication to get scheduled data from a web service. Every 20-30 minutes (or manually), I am scheduling a WKRefreshBackgroundTask to do this. As suggested by Apple, I want the OS to handle the fetching of this data via a background NSURLSession . This is the function I use to download the data I need: func scheduleURLSession() { print("\nScheduling URL Session...") let backgroundSessionConfig:URLSessionConfiguration = URLSessionConfiguration.background(withIdentifier: