我已经安装了CloudKit应用公共数据库的订阅。我想要从返回的notificationInfo的recordName。我一直没能找到任何文件来说明如何检索与框架方法recordName,所以我试图解析信息手动这是行不通的,但是这似乎严重暴力,我不知道我能指望该notificationInfo结构始终是相同的。任何指导将不胜感激。这里是代码片段。
func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
var changedCKRecord : String
let dict = userInfo as! [String : NSObject]
let notification = CKNotification(fromRemoteNotificationDictionary: dict)
let db = CloudKitDatabase.shared
if notification.subscriptionID == db.ckStyleSubscriptionID {
db.handleNotification()
completionHandler(.newData)
print(".newData for CKStyle returned")
for (key,value) in dict {
if key == "ck" {
let newDict : [String : NSObject] = value as! [String : NSObject]
for (key2,value2) in newDict {
if key2 == "qry" {
let thirdDict : [String : NSObject] = value2 as! [String : NSObject]
for (key3,value3) in thirdDict {
if key3 == "rid" {
if let end = value3 as? String {
changedCKRecord = end
print(changedCKRecord as Any)
}
}//if key3
}//for key3
}//if key2
}//for key 2 in
}//if key is ck
}//for in
} else {
completionHandler(.noData)
print(notification.subscriptionID as Any)
print(db.ckStyleSubscriptionID)
print(".noData for CKStyle returned")
}//if notification else
}//didReceiveRemoteNotification
如果我打印notificationInfo:
[AnyHashable("aps"): {"content-available" = 1;},
AnyHashable("ck"): {
ce = 2;
cid = "iCloud. the real bundle identifier ";
ckuserid = "_c4478d4d3a212da39cca27eb17dffe03";
nid = "58372f81-d10b-4e3b-98ae-40a0d1e048a2";
qry = {
dbs = 2;
fo = 2;
rid = "97DB306F-3277-07A1-04F5-40228A5EF036";
sid = "ckstyle-changes";
zid = "_defaultZone";
zoid = "_defaultOwner";
};
}]
如果通知是订阅的结果,那么CKNotification(fromRemoteNotificationDictionary:)
实际上将返回CKQueryNotification
的一个实例。然后,您可以访问CKQueryNotification
的recordID
属性来获得改变该记录的ID。
let dict = userInfo as! [String : NSObject]
let notification = CKNotification(fromRemoteNotificationDictionary: dict)
if let queryNotification = notification as? CKQueryNotification,
let recordName = queryNotification.recordID?.recordName {
print("Record name is \(recordName)")
}
}