Question

I using AFNetworking to populate a UITableView with youtube videos. YouTube API only allows maximum 50 result for each request. So I have to use multiple URLs to get more than 50 results.

I created a Method which will do AFNetworkings AFJSONRequestOperation on the given URLs.

I think the UITable is getting created before i receive the JSON data. Everything was working perfectly before i created the Method.

This the first time i have created a Method. I have been trying to load more than 50 youtube videos on a UITable for the last few days.Please have a look at my code.

Here is my code, you can also download the entire project from

QQViewController.m

-(void)viewWillAppear:(BOOL)animated {

    [super viewWillAppear:animated];
    //[super viewDidLoad];

    NSString *urlAsString = @"http://gdata.youtube.com/feeds/api/playlists/PL7CF5B0AC3B1EB1D5?v=2&alt=jsonc&max-results=50";


    // I am not sure how i am supposed to populate the uitableview with the second link :(

     NSString *urlAsString2 = @"http://gdata.youtube.com/feeds/api/playlists/PL7CF5B0AC3B1EB1D5?v=2&alt=jsonc&max-results=50&start-index=51";



    self.myurl = [NSURL URLWithString:urlAsString];

    [self getJSONfromURL:self.myurl];

[self.tableView reloadData];

}

-(void)viewDidAppear:(BOOL)animated {

        [super viewDidAppear:animated]; 

        self.videoMetaData = [self.myJSON valueForKeyPath:@"items.video"];

        NSLog(@" QQVC video Meta Data %@", self.videoMetaData);


        self.allThumbnails = [self.myJSON valueForKeyPath:@"data.items.video.thumbnail"];


        // The table need to be reloaded or else we will get an empty table.

        [self.tableView reloadData]; // Must Reload

        // NSLog(@" video Meta Data %@", self.videoMetaData);


}

// Here is the Method

-(void)getJSONfromURL:(NSURL *)url {

    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    // setup AFNetworking stuff
    AFJSONRequestOperation *operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:request success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON) {
        // call delegate or processing method on success

       // [self.myJSON = (NSArray *)JSON];

        self.myJSON = [JSON valueForKey:@"data"];
        [self.tableView reloadData];
       //NSLog(@" in get JSon method %@", self.myJSON);

    } failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id JSON) {
        NSLog(@"Request Failed with Error: %@, %@", error, error.userInfo);
    }];


    [operation start];



}

- (void)viewDidLoad
{
    [super viewDidLoad];
}

Answer 1

Move your reload tableview call to here.

-(void)getJSONfromURL:(NSURL *)url {

    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    // setup AFNetworking stuff
    AFJSONRequestOperation *operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:request success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON) {
        // call delegate or processing method on success

       // [self.myJSON = (NSArray *)JSON];

        self.myJSON = [JSON valueForKey:@"data"];
        [self.tableView reloadData];
       //NSLog(@" in get JSon method %@", self.myJSON);

    } failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id JSON) {
        NSLog(@"Request Failed with Error: %@, %@", error, error.userInfo);
    }];


    [operation start];



}