IOS8 beta CloudKit的CKDiscoverAllContactsOperation的任何有效示例代码吗？ [英] Any working sample code for CKDiscoverAllContactsOperation for IOS8 beta CloudKit?

问题描述

我一直在ios 8 beta中使用icloud，并且 CloudKitAtlasAnIntroductiontoCloudKit 示例项目非常有用。
https://developer.apple.com /library/prerelease/ios/samplecode/CloudAtlas/Introduction/Intro.html

I have been playing with icloud in the ios 8 beta, and the CloudKitAtlasAnIntroductiontoCloudKit sample project has been very helpful. https://developer.apple.com/library/prerelease/ios/samplecode/CloudAtlas/Introduction/Intro.html

但是我想使用 CKDiscoverAllContactsOperation 类，我根本无法在任何地方找到任何示例代码，并且在线文档不是很有帮助。
https://developer.apple .com / library / prerelease / ios / documentation / CloudKit / Reference / CKDiscoverAllContactsOperation_class / index.html

But I wanted to use the CKDiscoverAllContactsOperation class and I cannot find any sample code for it anywhere at all and the online documentation is not very helpful. https://developer.apple.com/library/prerelease/ios/documentation/CloudKit/Reference/CKDiscoverAllContactsOperation_class/index.html

如果有人成功使用 CKDiscoverAllContactsOperation 您能帮我指出正确的方向还是显示如何调用它的工作示例吗？

If anyone has managed to successfully use CKDiscoverAllContactsOperation could you please help point me in the right direction or show a working example of how it should be called?

这可以查看我是否甚至可以从iCloud得到响应，但什么也没得到：

I have tried this to see if I could even get an response from iCloud but nothing:

- (void)queryForRecordsOtherUsersInAddressBookcompletionHandler:(void (^)(NSArray *records))completionHandler {

CKDiscoverAllContactsOperation *discoverAllContactsOperation= [[CKDiscoverAllContactsOperation alloc] init];
[discoverAllContactsOperation setContainer:_container];

NSMutableArray *results = [[NSMutableArray alloc] init];


discoverAllContactsOperation.discoverAllContactsCompletionBlock = ^(NSArray *userInfos, NSError *operationError) {
    [results addObjectsFromArray:userInfos];
};


discoverAllContactsOperation.discoverAllContactsCompletionBlock=^(NSArray *userInfos, NSError *operationError){
    if (operationError) {
        // In your app, handle this error with such perfection that your users will never realize an error occurred.
        NSLog(@"An error occured in %@: %@", NSStringFromSelector(_cmd), operationError);
        abort();
    } else {
        dispatch_async(dispatch_get_main_queue(), ^(void){
            completionHandler(results);
        });

    }
};


}

并与此通话...

 [self.cloudManager queryForRecordsOtherUsersInAddressBookcompletionHandler:^(NSArray *records ) {
                if (records.count==0){
                    NSLog(@"Login name not found");
                    return;
                }
                //self.results= records;
                //_loggedInRecord = self.results[0];
                //NSLog(@"%@,%@",_loggedInRecord[@"lastName"],_loggedInRecord[@"firstName"]);
               // [self performSegueWithIdentifier:@"loggedInSegue" sender:self ];

            }];

我知道代码不应该做任何事情。再次，我只是在寻找iCloud的响应。

I know the code shouldn't really do anything. Again I was just looking for a response from iCloud.

推荐答案

在可以使用 CKDiscoverAllContactsOperation之前操作，您首先需要请求权限。

Before you can use the CKDiscoverAllContactsOperation operation, you first need to request for permission.

请使用方法 requestApplicationPermission：completion：

func discoverAllContacts() {

    let container = CKContainer.defaultContainer()

    //Request for user permission
    container.requestApplicationPermission([.UserDiscoverability]) { [weak self] status, error in

        switch status {
        case .Granted where error == nil:
            let operation = self?.discoverAllContactsOperation { usersInfo in
                //do something here
            }

            if let operationExists = operation {

                //Assuming there is a NSOperationQueue property called operationQueue
                self?.operationQueue.addOperation(operationExists)

            }

        default:
            break
        }
    }
}

func discoverAllContactsOperation(completionHandler: ([CKDiscoveredUserInfo]?) -> ()) -> NSOperation {

    let operation = CKDiscoverAllContactsOperation()

    operation.discoverAllContactsCompletionBlock = { usersInfo, error in

        if error == nil {
            print("Discoverd all contacts = \(usersInfo)")
            completionHandler(usersInfo)
        }
        else {
            print("Discoverd all contacts error = \(error)")
            completionHandler(nil)
        }

    }

    return operation
}

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