CloudKit: How to query a record from a Container's Public Database Using NSPredicate (Objective-C)

ios-cloudkit-objc-query

    //get the Container for the App
    CKContainer *defaultContainer = [CKContainer defaultContainer];
    
    //get the PublicDatabase inside the Container
    CKDatabase *publicDatabase = [defaultContainer publicCloudDatabase];
    
    //predicate for query
    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"address = '123 Beggers Canyon, Tatooine'", nil];
    
    //create query
    CKQuery *query = [[CKQuery alloc] initWithRecordType:@"POI" predicate:predicate];
    
    //execute query
    [publicDatabase performQuery:query inZoneWithID:nil completionHandler:^(NSArray *results, NSError *error) {
        
        //handle query error
        if(error) {
            
            NSLog(@"Uh oh, there was an error querying ... %@", error);

        } else {
            
            //handle query results
            if([results count] > 0) {
                
                //iterate query results
                for(CKRecord *record in results) {
                    
                    NSLog(@"Query was successfully");
                    NSLog(@"Title: %@", record[@"title"]);
                    NSLog(@"Description: %@", record[@"description"]);
                    NSLog(@"Address: %@", record[@"address"]);
                    NSLog(@"Locations: %@", record[@"locations"]);
                }
                
            //handle no query results
            } else {
                
                NSLog(@"Query returned zero results");
            }
        }
    }];