Specific twitter feed in app

lexy0202 · May 2011

Hi,

Been looking around for tutorials on this, but can only find one's related to logging in and posting.

Here all I want to do is show a specific (hardcoded) user's feed, which is presented nicely. I don't need any other functionality.

Anyone know a thread/tutorial that can put me in the right direction?

This is as simple as one of those widgets you see on the side of people's blogs which show their recent tweets

Thanks in advance,
Alex

smithdale87 · May 2011

Doubt apple will approve this. But you would just need to the the url for the twitter feed ( see twitter API ), then you can use NSURLConnection to download and NSXMLParser to parse the feed and show it in a table or what ever.

lexy0202 · May 2011

Thanks,
By user's twitter feed I mean company (the app's for the company) - This is a very small part of the app...
Would they still not approve that?

Alex

dany_dev · June 2011

yes, will be approved, if it is just a part of the app....

http://api.twitter.com/1/statuses/user_timeline.json?screen_name=yourTwitterUser

you can change json in xml if you prefer to have output in xml.

you can see more option here
GET statuses/user_timeline | dev.twitter.com

you need to use ASIHTTPRequest or NSURLConnection to download the timeline from that link and then parse with NSXMLParser or JSON Framework.

lexy0202 · June 2011

Cheers that's really helpful... do you know of a tutorial/sample code on how to parse that data? - I have no idea, never used data from the internet in an app before!

lexy0202 · June 2011

Also what is json? - All I know is that it's used in web APIs!

Thanks,
Alex

lexy0202 · June 2011

Could this write code that could parse it for you... ?

Objectify on the Mac App Store

dany_dev · June 2011

lexy0202;340544 said:
Cheers that's really helpful... do you know of a tutorial/sample code on how to parse that data? - I have no idea, never used data from the internet in an app before!

This tutorial contain the code to do a http request, and also to parse data with NSXMLParser for xml or with JSON Framework for json: WebService [How-To]

lexy0202;340545 said:
Also what is json? - All I know is that it's used in web APIs!

Thanks,
Alex

JSON as you can see in the tutorial above is just a textual standard to present data (the same concept of xml)

lexy0202;340546 said:
Could this write code that could parse it for you... ?

Objectify on the Mac App Store

No, this should just create Class from JSON....However is a good tool....but read the tutorial, you don't need more than that.

lexy0202 · June 2011

Thanks for your help!

Have been using JSON for a while now without a problem.

Up till now.

My app loads the twitter feed fine the first time it loads, but recently I've added a reload button, and as soon as I hit reload, it gives me a twitter error (in HTML). All it tells me is 'Something is technically wrong'.

I'm using the ASIHTTPRequest as demonstrated in the flickr async tutorial, plus I have managed to get reloading to work for images before, so I don't know why it won't work with twitter.

What puzzles me is it is a server-side error, is the framework making a bad request or something??

Thanks,
Alex

dany_dev · June 2011

i don't think that someone can help you without know exactly what you done....

yes, seem to be a server error, maybe caused by a wrong approach of using ASIHTTPRequest...

lexy0202 · June 2011

how would you suggest I download the data instead??

Alex

lexy0202 · June 2011

would using NSURLConnection be better??

dany_dev · June 2011

i suggest you to post the code if you ask help on a forum....maybe also a project that reproduce the problem can help..

lexy0202 · June 2011


- (void)viewDidLoad {
Reachability *reachManager = [Reachability sharedReachability];
    MyAppDelegate *appDelegate = [MyAppDelegate sharedAppDelegate];
    [reachManager setHostName:@\"api.twitter.com\"];
    NetworkStatus remoteHostStatus = [reachManager remoteHostStatus];
    BOOL reachable = YES;
    if (remoteHostStatus == NotReachable) {
        reachable = NO;
        [[NSNotificationCenter defaultCenter] removeObserver:self];
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@\"Network Error\" message:@\"Could not connect to Twitter (Please check your internet)\" delegate:nil cancelButtonTitle:@\"OK\" otherButtonTitles:nil];
        [alert show];
        [alert release];
    }
    else if (remoteHostStatus == ReachableViaWiFiNetwork)
    {
        [appDelegate.downloadQueue setMaxConcurrentOperationCount:4];
    }
    else if (remoteHostStatus == ReachableViaCarrierDataNetwork)
    {
        [appDelegate.downloadQueue setMaxConcurrentOperationCount:NSOperationQueueDefaultMaxConcurrentOperationCount];
    }
    
    if (reachable) {
        [self loadTweets];
    }
}

Then load tweets method kicks off the d/l


- (void)loadTweets {
    NSURL *jsonURL = [NSURL URLWithString:@\"http://api.twitter.com/1/statuses/user_timeline.json?screen_name=myUser\"];
    ASIHTTPRequest *request = [[ASIHTTPRequest alloc] initWithURL:jsonURL];
    [request setDelegate:self];
    [request setDidFinishSelector:@selector(requestDone:)];
    [request setDidFailSelector:@selector(requestFailed:)];
    NSOperationQueue *queue = [[MyAppDelegate sharedAppDelegate] downloadQueue];
    [queue addOperation:request];
    [self.view addSubview:loadingView];
    [request release];
}

Finally requestDone method:



NSData *data = [request responseData];
    NSLog(@\"%@\", [request url]);
    NSString *jsonString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
    NSLog(@\"%@\", jsonString);
    if ([jsonString length] != 0) {
        NSArray *array = [jsonString JSONValue];
        NSMutableArray *tweetArray = [[NSMutableArray alloc] init];
        
        for (int i = 0; i<[array count]; i++) {
            NSDictionary *dict = [array objectAtIndex:i];
            NSString *text = [dict objectForKey:@\"text\"];
            NSString *date = [dict objectForKey:@\"created_at\"];
            Tweet *tweet = [[[Tweet alloc] init] autorelease];
            tweet.text = text;
            tweet.date = date;
            [tweetArray addObject:tweet];
        }
        tweets = [[NSArray alloc] initWithArray:tweetArray];
        [myTable reloadData];
        
        [jsonString release];
        [tweetArray release];
    }
    else {
        NSLog(@\"Failed to download statuses, check connection/filters\");
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@\"Failed to download\" message:@\"Please check internet connection/filters\" delegate:nil cancelButtonTitle:@\"OK\" otherButtonTitles:nil];
        [alert show];
        [alert release];
    }
    [loadingView removeFromSuperview];

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