Core Motion 是否需要授权/.plist 信息？

Question

我正在尝试在后台使用CMMotionActivityManager 的startActivityUpdatesToQueue。

但它似乎不起作用，除了添加此代码之外，我还需要做其他事情吗：

        if CMMotionActivityManager.isActivityAvailable() {
            CMMotionActivityManager().startActivityUpdatesToQueue(NSOperationQueue.mainQueue(), withHandler: { (activity: CMMotionActivity?) in
                if (activity?.automotive)! {
                    let notification = UILocalNotification()
                    notification.alertTitle = "Arounder"
                    notification.alertBody = "User using car"
                    notification.soundName = "Notification Sound"
                    notification.category = "category"

                    UIApplication.sharedApplication().scheduleLocalNotification(notification)

                    print(notification.alertBody)
                } else if (activity?.cycling)! {
                    let notification = UILocalNotification()
                    notification.alertTitle = "Arounder"
                    notification.alertBody = "User is cycling"
                    notification.soundName = "Notification Sound"
                    notification.category = "category"

                    UIApplication.sharedApplication().scheduleLocalNotification(notification)
                    print(notification.alertBody)
                } else if (activity?.walking)! || (activity?.running)! {
                    let notification = UILocalNotification()
                    notification.alertTitle = "Arounder"
                    notification.alertBody = "User is walking/running"
                    notification.soundName = "Notification Sound"
                    notification.category = "category"

                    UIApplication.sharedApplication().scheduleLocalNotification(notification)
                    print(notification.alertBody)
                } else if (activity?.stationary)! {
                    let notification = UILocalNotification()
                    notification.alertTitle = "Arounder"
                    notification.alertBody = "User is standing"
                    notification.soundName = "Notification Sound"
                    notification.category = "category"

                    UIApplication.sharedApplication().scheduleLocalNotification(notification)
                    print(notification.alertBody)
                } else if (activity?.unknown)! {
                    let notification = UILocalNotification()
                    notification.alertTitle = "Arounder"
                    notification.alertBody = "Unknown activity"
                    notification.soundName = "Notification Sound"
                    notification.category = "category"

                    UIApplication.sharedApplication().scheduleLocalNotification(notification)
                    print(notification.alertBody)
                }
            })
        }

我是否需要像Core Location (requestAlwaysAuthorization) 那样获得用户的许可？ .plist 文件是什么东西？

谢谢！

Answer 1

CMMotionActivityManager 在您的应用处于后台（暂停）时不会提供更新。来自documentation：

处理程序块会尽最大努力执行，并且在您的应用暂停时不会传递更新。如果在您的应用程序暂停时更新到达，则在您的应用程序恢复执行时将最后一次更新传递给您的应用程序。要获取您的应用暂停期间发生的所有更新，请使用 queryActivityStarting(from:to:to:withHandler:) 方法。

您可以使用其他一些后台模式（例如显着位置更改模式）来让您的应用定期恢复后台执行并借此机会检索活动更新，但运动类型的更改其自身 不会导致您的应用程序从挂起移动到后台执行。