CKSubscription doc说：当记录修改导致订阅触发时,服务器会向具有该订阅的所有设备发送推送通知,但对原始更改记录的设备除外.
假设我有两个设备：设备1和设备2从不同的iCloud帐户登录.假设两个设备都订阅了某个记录类型的记录删除.
>如果设备1创建了一个记录,然后设备1删除它,那么设备2会收到通知 – 这符合DOC,但是……
>如果设备1创建了一个记录,然后设备2删除了它,那么设备2会收到通知 – 我认为它不符合DOC,并且它没有任何感觉,设备2将其删除,因此应该通知设备1
在设备1和设备2上设置订阅
func application(application: UIApplication,didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
application.registerUserNotificationSettings(UIUserNotificationSettings(forTypes: .Alert,categories: nil))
application.registerForRemoteNotifications()
let defaultContainer = CKContainer.defaultContainer()
let publicDatabase = defaultContainer.publicCloudDatabase
publicDatabase.fetchAllSubscriptionsWithCompletionHandler({subscriptions,error in
if error == nil {
if subscriptions.count == 0 {
let subscription = CKSubscription(recordType: "OU",predicate: NSPredicate(value: true),options: .FiresOnRecordDeletion)
subscription.notificationInfo = CKNotificationInfo()
subscription.notificationInfo.shouldBadge = false
subscription.notificationInfo.alertBody = "OU removed or upated"
publicDatabase.saveSubscription(subscription,completionHandler: {subscription,error in
if error == nil {
} else {
println("\(error.localizedDescription)")
}
})
}
} else {
println("\(error.localizedDescription)")
}
})
return true
}
在设备1上创建记录
@IBAction func addOU(sender: AnyObject) {
var defaultContainer = CKContainer.defaultContainer()
var publicDatabase = defaultContainer.publicCloudDatabase
let r = CKRecord(recordType: "OU",recordID: CKRecordID(recordName: "aaaa"))
publicDatabase.saveRecord(r,completionHandler: { r2,error in
if error == nil {
} else {
println("\(error.localizedDescription)")
}
})
}
删除设备2上的记录
@IBAction func removeOU(sender: AnyObject) {
var defaultContainer = CKContainer.defaultContainer()
var publicDatabase = defaultContainer.publicCloudDatabase
publicDatabase.deleteRecordWithID(CKRecordID(recordName: "aaaa"),completionHandler: {recordID,error in
if error == nil {
} else {
println("\(error.localizedDescription)")
}
})
}
解决方法
我仍然认为IT不确定CKSubscription如何工作,但作为一个临时修复我建议将第一个CKRecord的lastModifiedUserRecordID更改为想要删除记录的用户,然后才删除记录.
要更改lastModifiedUserRecordID,您必须获取它而不对其执行任何操作将其保存回来,然后删除可以：
@IBAction func removeOU(sender: AnyObject) {
var defaultContainer = CKContainer.defaultContainer()
var publicDatabase = defaultContainer.publicCloudDatabase
publicDatabase.fetchRecordWithID(CKRecordID(recordName: "aaaa"),completionHandler: {record,error in
if error == nil {
publicDatabase.saveRecord(record,completionHandler: {record2,error in
if error == nil {
publicDatabase.deleteRecordWithID(CKRecordID(recordName: "aaaa"),error in
if error == nil {
} else {
println("\(error.localizedDescription)")
}
})
} else {
println("\(error.localizedDescription)")
}
})
} else {
println("\(error.localizedDescription)")
}
})
}
