使用CloudKit提取用户记录ID失败

问题描述

我正在尝试使用CloudKit查找用户记录ID。我已验证帐户状态为 CKAccountStatusAvailable 。然后我尝试一下：

I'm trying to find the user record ID with CloudKit. I've verified that the account status is CKAccountStatusAvailable. Then I try this:

[[CKContainer defaultContainer] fetchUserRecordIDWithCompletionHandler:^(CKRecordID *recordID, NSError *error) {
    if (error == nil) {
        NSLog(@"Got user record ID (no permission req): %@", recordID);
    } else {
        NSLog(@"Couldn't get user record ID, error=%@", error);
    }
}];

这不可避免地失败，结果如下：

This inevitably fails with the following result:

(lldb) po error
<CKError 0x608000043990: "Not Authenticated" (9/1004); "Account couldn't get container scoped user id, no underlying error received">
(lldb) po [error userInfo]
{
    NSDebugDescription = "CKInternalErrorDomain: 1004";
    NSLocalizedDescription = "Account couldn't get container scoped user id, no underlying error received";
    NSUnderlyingError = "<CKError 0x608000044080: \"Unknown Error\" (1004)>";
}

未验证位似乎不正确-我已登录进入一个iCloud帐户，其他iCloud应用程序（例如TextEdit，Reminders）可以正常工作（无论如何，如果我没有，我不应该得到 CKAccountStatusAvailable ）。我还能在这里做什么？

The "not authenticated" bit seems to be incorrect-- I'm logged in to an iCloud account and other iCloud apps (e.g. TextEdit, Reminders) work normally (and anyway if I weren't, I shouldn't be getting CKAccountStatusAvailable). What else can/should I be doing here?

这是在OSX上的优胜美地beta3。更新：在beta 4中保持不变。

This is on OSX, Yosemite beta 3. Update: unchanged in beta 4.

推荐答案

问题是默认与自定义CloudKit容器的混淆。我已经将我的应用程序配置为使用自定义容器，但是试图在代码中使用默认容器（设置功能时，我可能有些困惑）。无论如何，关键是要从应用程序的功能中获取容器名称，然后在运行时使用 [CKContainer containerWithIdentifier：] 而不是使用 [ CKContainer defaultContainer] 。

The problem was confusion of default vs. custom CloudKit containers. I had configured my app to use a custom container, but was attempting to use the default container in my code (I was probably a little confused when setting up the capabilities). Anyway the key was to get the container name from the app's capabilities and then look it up at run time using [CKContainer containerWithIdentifier:] instead of using [CKContainer defaultContainer].

不幸的是，该错误消息没有帮助，令我感到惊讶的是， [CKContainer defaultContainer] 没有返回nil，但是无论如何该代码现在都能正常工作。

The error message was unfortunately not helpful, and I'm surprised that [CKContainer defaultContainer] did not return nil, but in any case the code works now.

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