CODEWITHSUNDEEP
iosiphoneswifticloudcloudkit
Alessio Chiappe
Alessio Chiappe

Reputation: 145

iOS 9 CloudKit: query does not return anything while connected to cellular network

I'm developing an app with xcode 7 beta 5. When i run my app on my iphone 6 and i try to connect it to CloudKit if my iphone works in wifi mode all it's ok, i display all my data; but if my iphone works in LTE mode i can't see any kind of data. Does anyone know how to do this?

    func getRecordsFromCloud() {  

    lavori = []  

    /  

    let _cloudContainer = CKContainer.defaultContainer()  
    let publicDatabase = CKContainer.defaultContainer().publicCloudDatabase  

    /  

    let predicate = NSPredicate(value: true)  
    let query = CKQuery(recordType: "Lavori", predicate: predicate)  

    /  

    let queryOperation = CKQueryOperation(query: query)  

    queryOperation.desiredKeys = ["image","name"]  
    queryOperation.queuePriority = .VeryHigh  
    queryOperation.resultsLimit = 50  

    queryOperation.recordFetchedBlock = { (record:CKRecord) -> Void in  

        let lavoriRecord = record  

        self.lavori.append(lavoriRecord)  



    }  

    queryOperation.queryCompletionBlock = { (cursor:CKQueryCursor?, error:NSError?) -> Void in  

        if (error != nil) {  

            print("Failed to get data from iCloud - \(error!.localizedDescription)")  

        }  
        else {  

            print("Successfully retrieve the data from iCloud")  

            dispatch_async(dispatch_get_main_queue(), {  
                self.tableView.reloadData()  

            })  

        }  

    }  

    /  

    publicDatabase.addOperation(queryOperation)  

}

Thanks, Alessio

Upvotes: 12

Views: 1486

Answers (2)

Zenman C
Zenman C

Reputation: 1723

I resolved this in the end by turning on the iCloud Drive data setting. This is actually quite hard to find. I'm on ios 14.1. My path to the setting was:

Settings -> Mobile Data - (then right at the bottom of Mobile Data) -> iCloud Drive.

I toggled this on and then everything works.

iCloud Drive data setting location

Upvotes: 0

Edwin Vermeer
Edwin Vermeer

Reputation: 13127

Open the settings app, find your app, enable 'use mobile data'

Update: As discussed below Adding the following line of code solved the problem:

queryOperation.qualityOfService = .UserInteractive

The reason why this works must be a timing / load issue. My initial guess would be that this is caused by this line:

queryOperation.queuePriority = .VeryHigh

The documentations states for the .queuePriority this: You should use priority values only as needed to classify the relative priority of non-dependent operations.

The documentation states for the .qualityOfService this: The default value of this property is NSOperationQualityOfServiceBackground and you should leave that value in place whenever possible.

So please try removing both the .queuePriority and .qualityOfService and see if it's working.

Update 2: Apparently this is a CloudKit bug. More people have the same issue. Please report it at https://bugreport.apple.com

Upvotes: 13

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