我正在使用 CloudKit 存储用户数据，并希望在记录更改或创建新记录时获得推送通知。但它不起作用......

我像这样注册订阅:

- (void) updateCloudSubscriptions {

    NSPredicate *allPredicate = [NSPredicate predicateWithFormat:@"TRUEPREDICATE"];
    CKSubscription *newOrUpdateSubscription = [[CKSubscription alloc]
        initWithRecordType:kMyRecordType predicate:allPredicate options:
        (CKSubscriptionOptionsFiresOnRecordCreation | CKSubscriptionOptionsFiresOnRecordUpdate)];
    CKNotificationInfo *newOrUpdateNotificationInfo = [CKNotificationInfo new];
    newOrUpdateNotificationInfo.shouldBadge = NO;
    newOrUpdateNotificationInfo.shouldSendContentAvailable = YES;
    newOrUpdateSubscription.notificationInfo = newOrUpdateNotificationInfo;

    CKDatabase *publicDatabase = [[CKContainer containerWithIdentifier:kMyContainerID] 
        publicCloudDatabase];
    [publicDatabase saveSubscription:newOrUpdateSubscription 
         completionHandler:^(CKSubscription *theSubscription, NSError *saveError) {
        if (saveError){
            //error handling
        }
        NSLog(@"Subscription created");
    }];
}

这成功了。在 CloudKit 仪表板上，订阅已正确创建。

在我的 AppDelegate 中，我现在有以下内容:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    UIUserNotificationSettings *notificationSettings = [UIUserNotificationSettings settingsForTypes:
        (UIUserNotificationTypeNone | UIUserNotificationTypeAlert |
        UIUserNotificationTypeBadge | UIUserNotificationTypeSound) categories:nil];
    [application registerUserNotificationSettings:notificationSettings];
    [application registerForRemoteNotifications];
}

并且实现了这些委托(delegate)方法:

- (void)application:(UIApplication *)application
    didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {
    NSLog(@"%@ with token = %@", NSStringFromSelector(_cmd), deviceToken);
}


- (void)application:(UIApplication *)application
    didFailToRegisterForRemoteNotificationsWithError:(NSError *)error {
    NSLog(@"%@ with error = %@", NSStringFromSelector(_cmd), error);
}


- (void)application:(UIApplication *)application 
    didReceiveRemoteNotification:(NSDictionary *)userInfo {
    NSLog(@"%@", NSStringFromSelector(_cmd));
}

didRegisterForRemoteNotificationsWithDeviceToken使用 token 成功调用。但是 didReceiveRemoteNotification 从未被调用。

我通过更改我的应用程序的 Mac 版本和 iPhone 版本上的值对此进行了测试。两者都上传了更改，但都没有触发通知。我还尝试直接在仪表板上更改值，但这也没有引起通知。

我在这里错过了什么？

如果相关:我在 OS X 10.10 和 XCode 6.4 上

我激活了 apsd 日志记录，但只收到如下消息:

Jul 12 18:25:29 Mac.local apsd[44748]: APSMessageStore - Saving database.
Jul 12 18:25:29 Mac.local apsd[44748]: APSMessageStore - Destroying database.
Jul 12 18:25:29 Mac.local apsd[44748]: APSMessageStore - Closed database.
Jul 12 18:25:29 Mac.local apsd[44748]: APSMessageStore - Reopening database
Jul 12 18:25:29 Mac.local apsd[44748]: APSMessageStore - Initializing database on thread: <NSThread: 0x7f8f1bf80dd0>{number = 55, name = (null)}
Jul 12 18:25:29 Mac.local apsd[44748]: APSMessageStore - Enabling auto vacuum.
Jul 12 18:25:29 Mac.local apsd[44748]: APSMessageStore - Enabling WAL journal mode.
Jul 12 18:25:29 Mac.local apsd[44748]: APSMessageStore - Enabling Foreign Key support.

最佳答案

2015 WWDC CloudKit Tips & Tricks video指出如果您想发送静默推送通知，您需要在您的 notificationInfo 字典中将 shouldSendContentAvailable 设置为 true，如下所示:

let notificationInfo = CKNotificationInfo()
notificationInfo.shouldSendContentAvailable = true
subscription.notificationInfo = notificationInfo

关于ios - CloudKit 推送通知 didReceiveRemoteNotification 从未调用过，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/31370028/