如何使用CKFetchNotificationChangesOperation？

Question

如何使用CKFetchNotificationChangesOperation来处理和引导从订阅的CKSubscription到我的Mac应用程序中的- (void)application:(nonnull NSApplication *)application didReceiveRemoteNotification:(nonnull NSDictionary *)userInfo {的所有遗漏通知？该方法的代码如下，

- (void)application:(nonnull NSApplication *)application didReceiveRemoteNotification:(nonnull NSDictionary *)userInfo {

    NSLog(@"CKSubscription received.");

    CKQueryNotification *cloudKitNotification = [CKQueryNotification notificationFromRemoteNotificationDictionary:userInfo];

    [[NSNotificationCenter defaultCenter] postNotificationName:@"CloudKitUpdated" object:nil userInfo:@{@"ckNotification" : cloudKitNotification}];
}

我的应用程序是一个菜单，我希望它检查是否有遗漏的通知，并在点击菜单时正确处理它们。

更新:这是我一直在尝试的代码，但是数组总是空的，没有错误。我正在测试运行应用程序，关闭应用程序，删除记录，然后再运行应用程序。

 NSMutableArray *array = [NSMutableArray array];
    CKFetchNotificationChangesOperation *operation = [[CKFetchNotificationChangesOperation alloc] initWithPreviousServerChangeToken:nil];
    operation.notificationChangedBlock = ^(CKNotification *notification) {
        [array addObject:notification.notificationID];
    };
    operation.completionBlock = ^{


    };

    operation.fetchNotificationChangesCompletionBlock = ^(CKServerChangeToken *token, NSError *error) {


            NSLog(@"Missed notifications: %@", array);

    };

    [_myContainer addOperation:operation];

Answer 1

NSMutableArray *array = [NSMutableArray array];
CKFetchNotificationChangesOperation *operation = [[CKFetchNotificationChangesOperation alloc] initWithPreviousServerChangeToken:nil];
operation.notificationChangedBlock = ^(CKNotification *notification) {
    [array addObject:notification.notificationID];
};
operation.completionBlock = ^{


};

operation.fetchNotificationChangesCompletionBlock = ^(CKServerChangeToken *token, NSError *error) {


        NSLog(@"Missed notifications: %@", array);

};

[_myContainer addOperation:operation];