Saving Objects from Parse data using Swift instead of Objective-C

Question

I'm converting my ViewController from Objective-C to Swift.

I was wondering if findObjectsInBackgroundWithBlock is the smartest thing to still be using (or if that will load too slow), and if I should be using it the same way.

I'm using it to get my Parse data and save it to my App Group and/or NSUserDefaults.

    // Query Parse
    PFQuery *query = [PFQuery queryWithClassName:@"data"];

    [query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
        if (!error) {

            NSMutableArray *localMatchup = [@[] mutableCopy];

            for (PFObject *object in objects) {


                // Add objects to local Arrays
                [localMatchup addObject:[object objectForKey:@"matchup"]];

                // App Group
                NSString *container = @"group.com.ramsden.playoffs";
                NSUserDefaults *defaults = [[NSUserDefaults alloc] initWithSuiteName:container];

                // Matchup
                [defaults setObject:localMatchup forKey:@"KeyMatchup"];
                NSArray *savedMatchup = [defaults objectForKey:@"KeyMatchup"];
                self.matchupArray = localMatchup;

Update: I tried Lamar's answer below, but am getting an error on the findObjectsInBackgroundWithBlock line that says: '([AnyObject]!, NSError!) -> Void' is not compatible to 'PFArrayResultBlock?

Here's a closer look at the specific line:

Lamour · Accepted Answer · 2015-09-05 18:13:00Z

1

Try this:

func GetBackFromParse(localMatchUp:NSMutableArray){
var query = PFQuery(className: "data")
query.findObjectsInBackgroundWithBlock { (objects:[AnyObject]?, error:NSError?) -> Void in

    if error == nil
    {

        if let objects = objects as? [PFObject]{

            for SingleObject in objects
            {

                var matchup = SingleObject["matchup"]
                localMatchUp.addObject(matchup!)

                 // do whatever you want to do
            }

        }
    }

}

answered Sep 5, 2015 at 18:13

Lamour

3,0403 gold badges18 silver badges28 bronze badges

Sign up to request clarification or add additional context in comments.

9 Comments

SRMR Over a year ago

Hey @Lamar, thanks for the response! I think what you're doing makes sense to me, the only thing so far is that I'm getting an error on the findObjectsInBackgroundWithBlock line that says: '([AnyObject]!, NSError!) -> Void' is not compatible to 'PFArrayResultBlock?`. Any idea?

Lamour Over a year ago

replace with what i have on the code query.findObjectsInBackgroundWithBlock { (objects:[AnyObject]?, error:NSError?) -> Void in

SRMR Over a year ago

Yup, that works. And for the part where you put // do whatever you want to do, is that corresponding to the parts of my code where I have // App Group and Matchup?

Lamour Over a year ago

yeah where you had to create the instance of NSUserDefaults

SRMR Over a year ago

Gotcha. Seems like I'm close, but I'm getting a error on localMatchUp.addObject(matchup!) line "Use of unresolved identifier localMatchup". I'm assuming because in my ObjC I specified that mutable array, but in the Swift I'm not seeing that its done that? Am I on the right track there, or what do you think?

|

Collectives™ on Stack Overflow

Saving Objects from Parse data using Swift instead of Objective-C

1 Answer 1

9 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

9 Comments

Your Answer

Sign up or log in

Post as a guest

Related