NSSharingService performWithItems挂起

Question

我有一个工作的共享例程，但现在它坏了。我已经有一段时间没有检查或修改过它了，现在发现它无法操作。当我打电话的时候

[sharingService performWithItems:[NSArray arrayWithObject:itemProvider]];

我得到了一个共享工作表。它显示共享的当前成员。该表单不可操作，不接受任何输入或点击。我无法添加、删除或完全停止共享。当我关闭窗体时，我的应用程序挂起，不会响应或获得焦点。我必须关闭应用程序并重新打开它，才能让它再次工作。

在过去的几个月里，这个方法运行得很好。我没有改变任何东西，所以我对新的问题感到非常惊讶。

我在这里添加了创建共享的代码：

NSString *shareOption = [[NSUserDefaults standardUserDefaults] objectForKey:kSet_CLOUD_SERVICE_USER_DEFAULT];
if ([shareOption isEqualToString:TTICloudKitShareOwnerService]) {
    CDEZipCloudFileSystem *zipFile = (CDEZipCloudFileSystem *)_cloudFileSystem;
    CDECloudKitFileSystem *fileSystem = (CDECloudKitFileSystem *)zipFile.cloudFileSystem;

    NSItemProvider *itemProvider = [[NSItemProvider alloc] init];
    [itemProvider registerCloudKitShare:fileSystem.share container:fileSystem.container];

    NSSharingService *sharingService = [NSSharingService sharingServiceNamed:NSSharingServiceNameCloudSharing];
    sharingService.subject = @"Share Workforce Data";
    sharingService.delegate = self;
    if ([sharingService canPerformWithItems:[NSArray arrayWithObject:itemProvider]]) {
        [sharingService performWithItems:[NSArray arrayWithObject:itemProvider]];

    // This is the point at which the Apple UI is presented but inoperable.
    // No changes can be made to the share.
    // The only way to dismiss the dialog is to quit or press escape.
    // Upon dismissal the app is either crashed or hung up.
    // Quitting the app and restart is only option to use the app again.
    // If not run from Xcode, requires force quit.

    }
} else {
    NSLog(@"Is Shared Ensemble");
    NSAlert *alert = [[NSAlert alloc] init];
    [alert addButtonWithTitle:@"Stop Share"];
    [alert addButtonWithTitle:@"Cancel"];
    [alert setMessageText:@"Shared Data Options"];
    [alert setInformativeText:@"You are participating in a shared file. Stop sharing will remove your participation and reset your data. You will no longer participate or have access to the shared information."];
    [alert setAlertStyle:NSAlertStyleWarning];

    if ([alert runModal] == NSAlertFirstButtonReturn) {
        [alert setInformativeText:@"Are you sure? You will no longer have access to shared data. You will need the owner of the share to resend an invitation to join the share."];
        if ([alert runModal] == NSAlertFirstButtonReturn) {
            // This actually does not remove user from sharing as intended.
            // I am sure that is my own implementation incomplete though.
            NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
            [defaults setNilValueForKey:kSet_CLOUDKIT_SHARE_OWNER_DEFAULT];
            [defaults setObject:TTICloudKitShareOwnerService forKey:kSet_CLOUD_SERVICE_USER_DEFAULT];
            [defaults synchronize];
            [self disconnectFromSyncServiceWithCompletion:^{
                // TODO: Need to wipe the existing Core Data info here. Leave them with no access to shared data.
                //      Also need to remove self from the share?
                [self reset];
                [self setupEnsemble];
            }];
        }
    }
}

创建分享和发送功能运行得天衣无缝，我一直在开发应用程序并进行现场测试。目前，我的测试与另外两个用户共享，并且仍然有效。事实上，我似乎找不到一种方法来停止与这些用户的分享，或者以任何方式改变当前的分享。

这是NSCloudSharingServiceDelegate代码：

-(NSCloudKitSharingServiceOptions)optionsForSharingService:(NSSharingService *)cloudKitSharingService shareProvider:(NSItemProvider *)provider
{
  return NSCloudKitSharingServiceAllowPrivate | NSCloudKitSharingServiceAllowReadWrite;
}

-(void)sharingService:(NSSharingService *)sharingService willShareItems:(NSArray *)items
{
  DLog(@"Will Share Called with items:%@",items);
}

-(void)sharingService:(NSSharingService *)sharingService didShareItems:(NSArray *)items
{
  DLog(@"Did share called");
}

-(void)sharingService:(NSSharingService *)sharingService didFailToShareItems:(NSArray *)items error:(NSError *)error
{
  DLog(@"Sharing service failed to share items, %@-", error);
  if (error.code == NSUserCancelledError) return;
  DLog(@"Failed to share, error- %@", error.userInfo);
  [self disconnectFromSyncServiceWithCompletion:^{
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    [defaults setObject:kSet_CLOUDKIT_SHARE_OWNER_DEFAULT forKey:kSet_CLOUD_SERVICE_USER_DEFAULT];
    [defaults setNilValueForKey:kSet_CLOUDKIT_SHARE_OWNER_DEFAULT];
    [defaults synchronize];
  }];
}

显然，我是少数几个发现这一点很重要的人之一，因为我在网上搜索过，发现几乎没有人讨论它。苹果的文档几乎是零。

这是无法工作的Apple UI的屏幕截图：

​

​

Answer 1

我张贴这篇文章作为一个答案，更像是我设法得到的一项工作。对于为什么Apple UI没有响应，仍然没有答案。

请参阅在没有Apple UI的情况下邀请参与者的代码。

-(void)addParticipantWithEmail:(NSString *)email toShare:(CKShare *)share inContainer:(CKContainer *)container
{
    [container discoverUserIdentityWithEmailAddress:(email) completionHandler:^(CKUserIdentity * _Nullable userInfo, NSError * _Nullable error) {
        if (!userInfo || error) {
            NSLog(@"Participant was not found for email %@", email);
            if (error) {
                NSLog(@"Error: %@", error.userInfo);
            } else {
                NSLog(@"No error was provided");
            }

            // abort
            return;
        }
        CKFetchShareMetadataOperation *fetchMetaDataOperation = [[CKFetchShareMetadataOperation alloc] initWithShareURLs:[NSArray arrayWithObject:share.URL]];
        fetchMetaDataOperation.shouldFetchRootRecord = YES;
        [fetchMetaDataOperation setPerShareMetadataBlock:^(NSURL * _Nonnull shareURL, CKShareMetadata * _Nullable shareMetadata, NSError * _Nullable error) {
            CKRecord *root = shareMetadata.rootRecord;

            if (!root) {
                NSLog(@"There was an error retrieving the root record- %@", error);
            } else {
                NSLog(@"Root is %@", root);
                NSLog(@"/n");
            }

            CKUserIdentityLookupInfo *info = userInfo.lookupInfo;
            CKFetchShareParticipantsOperation *fetchOperation = [[CKFetchShareParticipantsOperation alloc] initWithUserIdentityLookupInfos:[NSArray arrayWithObject:info]];
            [fetchOperation setShareParticipantFetchedBlock:^(CKShareParticipant * _Nonnull participant) {
                participant.permission = CKShareParticipantPermissionReadWrite;
                [share addParticipant:participant];
                CKModifyRecordsOperation *modifyOperation = [[CKModifyRecordsOperation alloc] initWithRecordsToSave:[NSArray arrayWithObjects:root, share, nil] recordIDsToDelete:nil];
                modifyOperation.savePolicy = CKRecordSaveIfServerRecordUnchanged;
                [modifyOperation setPerRecordCompletionBlock:^(CKRecord * _Nonnull record, NSError * _Nullable error) {
                    if (error) {
                        DLog(@"Error modifying record %@. UserInfo: %@", record, error.userInfo);
                    } else {
                        DLog(@"No Error Reported in Modify Operation");
                    }
                }];
                [container.privateCloudDatabase addOperation:modifyOperation];
            }];
            [fetchOperation setFetchShareParticipantsCompletionBlock:^(NSError * _Nullable operationError) {
                if (operationError) {
                    NSLog(@"There was en error in the fetch operation- %@", operationError.userInfo);
                    // Error may be a network issue, should implement a retry and possibly a limit to how many times to run it
                }
            }];
            [container addOperation:fetchOperation];
        }];
        [container addOperation:fetchMetaDataOperation];
    }];
}

现在看来，如果我将电子邮件地址传递给此功能，他们将被成功邀请分享，前提是用户在我的联系人中并允许发现。

此时，我通过iMessage手动将共享链接发送给用户。已从控制台复制URL。我的目的是现在提供我自己的表单来处理这个问题。

在接收链路上，我使用集成方法：

CDECloudKitFileSystem acceptInvitationToShareWithMetadata:metadata completion:^(NSError *error)

这段代码似乎不起作用，最初接受邀请失败。在没有任何改变的情况下，接受共享开始工作。我不确定初始失败的原因。