如何使用CKFetchNotificationChangesOperation？ [英] How to use CKFetchNotificationChangesOperation?

问题描述

如何使用 CKFetchNotificationChangesOperation 处理和将所有丢失的通知从已订阅的 CKSubscription 定向到-（void）application：（nonnull NSApplication *）application didReceiveRemoteNotification：（nonnull NSDictionary *）userInfo {在我的Mac应用程序中？我对该方法的代码如下，

How do I use CKFetchNotificationChangesOperation to handle and direct all missed notifications from a subscribed CKSubscription to the - (void)application:(nonnull NSApplication *)application didReceiveRemoteNotification:(nonnull NSDictionary *)userInfo { in my Mac application? The code I have for that method is as follows,

- (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}];
}

我的应用是菜单，我希望它检查是否有任何遗漏的通知，

My app is a menulet and I want it to check for any missed notifications and handle them properly when the menulet is clicked on.

更新：这是我一直在尝试的代码，但是数组始终为空，没有错误。我正在通过运行应用程序，关闭应用程序，删除记录然后再次运行应用程序进行测试。

UPDATE: This is the code I have been trying but the array is always empty and there is no error. I am testing by running the app, closing the app, deleting a record, and then running the app again.

 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];

推荐答案

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];

这篇关于如何使用CKFetchNotificationChangesOperation？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！