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Question

would like iphone view with feed of all twitter tweets with a given hashtag

Answer 1

A:

http://search.twitter.com/search?q=%23weloveyouss501

there is your hash tag... see at the right there is an rss feed of this query:

http://search.twitter.com/search.atom?q=%23weloveyouss501

brilliant - now all you need is TouchXML and this function:

-(void)getRSSFeed:(NSString *)XMLString {

    blogEntries = [[[NSMutableArray alloc] init] autorelease]; // blogEntries in header

    NSError *theError;
    CXMLDocument *rssParser = [[[CXMLDocument alloc] initWithXMLString:XMLString options:0 error:&theError] autorelease];

    if(theError){
        NSLog(@"An error");
    }

    NSArray *resultNodes = NULL;
    resultNodes = [rssParser nodesForXPath:@"//item" error:nil];

    for (CXMLElement *resultElement in resultNodes) {
        NSMutableDictionary *blogItem = [[NSMutableDictionary alloc] init];

        int counter;
        for(counter = 0; counter < [resultElement childCount]; counter++) {

            [blogItem setObject:[[resultElement childAtIndex:counter] stringValue] forKey:[[resultElement childAtIndex:counter] name]];
        }
        [blogEntries addObject:[blogItem copy]]; // blog entries set in header
    }

}

if you output blogEntries you will see all the entries. :) Now you can get at them easily. :)

Thomas Clayson 2010-09-10 14:18:02

You know that `[[[NSMutableArray alloc] init] autorelease]` is the same as `[NSMutableArray array]` right?

St3fan 2010-09-10 14:24:42

Also, you leak memory when adding the retained copy `blogItem`. Doing `blogItem = [NSMutableDictionary dictionary]` and then later `[blogEntries addObject: blogItem]` will solve that.

St3fan 2010-09-10 14:26:34

ah, fair enough mate - I didn't write it... can't remember where I got it from now, although its somewhat modified, so might be my fault. :/ Ah, thanks for the heads up.

Thomas Clayson 2010-09-10 14:35:02

Thanks, Thomas Clayson. So, to get a real-time feed, I would: 1) do an HTTP get on the atom url 2) pass the result into getRSSFeed 3) display results 4) run timer and repeat for real-time ?

Jacko 2010-09-10 18:33:25

I would make a custom class that does an asynchronous url request (NSURLConnection) and fetches those results. Then I would run a timer, as you say, to run that class over and over again. Then in my custom class I would have a delegate method that gets called once the script has completed and have the method `reloadData` the main table view (if thats how you're doing it). :) hope this helps

Thomas Clayson 2010-09-11 17:32:33

cool. Thanks for your help, Thomas.

Jacko 2010-09-14 18:54:20

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would like iphone view with feed of all twitter tweets with a given hashtag

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