我问了这个问题，人们已经回答但没有任何作用。这对我来说非常重要，我可以让它发挥作用。以下是我的一些代码：
@IBAction func sendSweet(sender: AnyObject) {
//delegate method
let newSweet = CKRecord(recordType: "Extra1")
newSweet["content"] = textField.text
let publicData = CKContainer.defaultContainer().publicCloudDatabase
publicData.saveRecord(newSweet, completionHandler: { (record:CKRecord?, error:NSError?) -> Void in
if error == nil {
dispatch_async(dispatch_get_main_queue(), { () -> Void in
self.tableView.beginUpdates()
self.sweets.insert(newSweet, atIndex: 0)
let indexPath = NSIndexPath(forRow: 0, inSection: 0)
self.tableView.insertRowsAtIndexPaths([indexPath], withRowAnimation: .Top)
self.tableView.endUpdates()
self.textField.text = ""
self.textField.resignFirstResponder()
})
}})
// Put the CloudKit private database in a constants
let privateDatabase = CKContainer.defaultContainer().publicCloudDatabase
// Create subscription and set three of its properties (an id, a predicate, and options)
let friendsSubscription = CKSubscription(recordType: "Extra1",
predicate: NSPredicate(format: "TRUEPREDICATE"),
subscriptionID: "Extra1",
options: .FiresOnRecordCreation)
// Create a notification and set two of its properties (alertBody and shouldBadge)
let notificationInfo = CKNotificationInfo()
notificationInfo.alertBody = "New message in Lms Chat"
notificationInfo.shouldBadge = false
// Attach the notification to the subscription
friendsSubscription.notificationInfo = notificationInfo
// Save the subscription in the private database
privateDatabase.saveSubscription(friendsSubscription) {recordReturned, error in
// On the main thread, display an error/success message in the textView
if error != nil {
NSOperationQueue.mainQueue().addOperationWithBlock {
self.textField.text = "Cloud error\n\(error!.localizedDescription)"
}
} else {
NSOperationQueue.mainQueue().addOperationWithBlock {
self.textField.text = ""
}
}
}
}
func textFieldShouldEndEditing(textField: UITextField!) -> Bool { //delegate method
return false
}
func textFieldShouldReturn(textField: UITextField!) -> Bool { //delegate method
textField.resignFirstResponder()
return true
}
这是一个消息传递应用程序，所以人们可以互相发送消息，但我也希望他们收到通知。这是通知代码，我还在App Delegate中有一些通知代码：
import UIKit
import CloudKit
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
let notificationSettings = UIUserNotificationSettings(forTypes: [.Alert, .Badge, .Sound], categories: nil)
UIApplication.sharedApplication().registerUserNotificationSettings(notificationSettings)
UIApplication.sharedApplication().registerForRemoteNotifications()
return true
}
func application(application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData) {
print(deviceToken) // This is the device token
var token: String = "\(deviceToken)" /// formatted token.
// Following lines will convert token from NSData to String.
let rawtoken = token.stringByReplacingOccurrencesOfString(">", withString: "")
let cleantoken = rawtoken.stringByReplacingOccurrencesOfString("<", withString: "")
var finaltoken = cleantoken.stringByReplacingOccurrencesOfString(" ", withString: "")
// Send device token to server
}
}
func application(application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: NSError) {
print(error)
}
func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject]) {
let cloudKitNotification = CKNotification(fromRemoteNotificationDictionary: userInfo as! [String:NSObject])
if cloudKitNotification.notificationType == CKNotificationType.Query {
dispatch_async(dispatch_get_main_queue(), { () -> Void in
NSNotificationCenter.defaultCenter().postNotificationName("performReload", object: nil)
})
}
}
func resetBadge () {
let badgeReset = CKModifyBadgeOperation(badgeValue: 0)
badgeReset.modifyBadgeCompletionBlock = { (error) -> Void in
if error == nil {
UIApplication.sharedApplication().applicationIconBadgeNumber = 0
}
}
CKContainer.defaultContainer().addOperation(badgeReset)
}
func applicationWillResignActive(application: UIApplication) {
// Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
// Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
}
func applicationDidEnterBackground(application: UIApplication) {
resetBadge()
}
func applicationWillEnterForeground(application: UIApplication) {
dispatch_async(dispatch_get_main_queue(), { () -> Void in
NSNotificationCenter.defaultCenter().postNotificationName("performReload", object: nil)
})
}
func applicationDidBecomeActive(application: UIApplication) {
resetBadge()
}
func applicationWillTerminate(application: UIApplication) {
// Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}
但是，即使我拥有在每次有人发送消息时发出通知所需的所有代码，通知也不会进入。我错过了什么吗？谢谢！
有人在回答我之前说：
您正在向公共数据库添加数据，但您正在私有数据库上创建订阅。其中一个需要改变以匹配另一个。
所以我将let privateDatabase = CKContainer.defaultContainer().privateCloudDatabase更改为let privateDatabase = CKContainer.defaultContainer().publicCloudDatabase
有人还告诉我，我错过了一个功能：
func application(application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData) {
print(deviceToken) // This is the device token
var token: String = "\(deviceToken)" /// formatted token.
// Following lines will convert token from NSData to String.
let rawtoken = token.stringByReplacingOccurrencesOfString(">", withString: "")
let cleantoken = rawtoken.stringByReplacingOccurrencesOfString("<", withString: "")
var finaltoken = cleantoken.stringByReplacingOccurrencesOfString(" ", withString: "")
// Send device token to server
}
}
}
他们说：“我的意思是发送通知，你注册用户推送通知。对于案例如果注册成功，你必须实现上面的方法。如果注册失败，你必须实现这个： “
func application(application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: NSError) {
print(error)
}
我添加了这个并且它仍然不起作用（通知仍然没有出现。）任何其他解决方案？谢谢！