Parse local data store in Dating App like badoo. Urgent

Hello, iam develooing an Dating App like baddo with Parse and i want to store data to be accesible offline (Users find near you, Messages list e Conversations) 1. How to activate in AppDelegate and in ViewsControllers? 2. Give me and simple exemple with my own code if possible. Thanks

Messages list viewController

PFQuery *messageQueryFrom = [MessageParse query];
[messageQueryFrom whereKey:@"fromUserParse" equalTo:[UserParseHelper currentUser]];
PFQuery *messageQueryTo = [MessageParse query];
[messageQueryTo whereKey:@"toUserParse" equalTo:[UserParseHelper currentUser]];
PFQuery *both = [PFQuery orQueryWithSubqueries:@[messageQueryFrom, messageQueryTo]];
[both orderByDescending:@"createdAt"];

[both findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error)

Conversation Viewcontroller

 (void)getMessages

PFQuery *query1 = [MessageParse query];
[query1 whereKey:@"fromUserParse" equalTo:[PFUser currentUser]];
[query1 whereKey:@"toUserParse" equalTo:self.toUserParse];
[query1 whereKey:@"text" notEqualTo:@""];


PFQuery *query2 = [MessageParse query];
[query2 whereKey:@"fromUserParse" equalTo:self.toUserParse];
[query2 whereKey:@"toUserParse" equalTo:[PFUser currentUser]];
[query2 whereKey:@"text" notEqualTo:@""];




PFQuery *orQUery = [PFQuery orQueryWithSubqueries:@[query1, query2]];
[orQUery orderByAscending:@"createdAt"];





[orQUery findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
    self.messages = [objects mutableCopy];
    [self.collectionView reloadData];
    [self scrollCollectionView];
    for (MessageParse *message in objects) {
        message.read = YES;
        [message saveInBackground];
    }
}];

User near viewcontroller

(void)queryParseMethod {NSLog(@"start query");

PFQuery *query = [UserParseHelper query];
[query whereKey:@"username" notEqualTo:self.mainUser.username];
PFGeoPoint *userGeoPoint = self.mainUser.geoPoint;

[query whereKey:@"geoPoint" nearGeoPoint:userGeoPoint];

if (self.segmentedControl.selectedSegmentIndex == 0) {
    [query whereKey:@"isMale" equalTo:@"true"];

}
if (self.segmentedControl.selectedSegmentIndex== 1) {
   [query whereKey:@"isMale" equalTo:@"false"];

}


PFUser *chekUser = [PFUser currentUser];
NSString *vip = chekUser[@"membervip"];
if ([vip isEqualToString:@"vip"]) {

    NSLog(@"Unlim - vip member");
    self.upgradeVip.hidden = YES;

} else{

    NSLog(@"No Unlim - no vip member");
 //   query.limit = limitQueruNoVipUser;
    self.upgradeVip.hidden = NO;

}

[query whereKey:@"geoPoint" nearGeoPoint:self.mainUser.geoPoint withinKilometers:self.mainUser.distance.doubleValue];



[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
    if (!error) {
        imageFilesArray = [[NSArray alloc] initWithArray:objects];


       [_imagesCollection reloadData];
        [_imagesCollection performBatchUpdates:nil completion:nil];
    }
}];

}

via Chebli Mohamed