Analisi Risultato di ricerca con MGTwitterEngine in Objective C

StackOverflow https://stackoverflow.com/questions/1851214

Domanda

Sto usando sorprendente MGTwitterEngine di Matt Gemmell per un progetto iPhone, e la mia mancanza di familiarità con Obj-C e JSON parsing sta facendo un lavoro semplice sembrare piuttosto scoraggiante.

Ho letto questo link , e mentre mi aiuta a capire come i dati è strutturata, io ancora non riesco a essere in grado di analizzarlo.

Se faccio un NSLog della produzione di getSearchResultsForQuery in questo modo: 

NSLog(@"getSearchResultsForQuery: connectionIdentifier = %@", [myTwitterEngine getSearchResultsForQuery:@"#joke" sinceID:0 startingAtPage:1 count:5]);

ottengo questo nella console: 

2009-12-05 00:14:46.518 Entendu[90565:207] getSearchResultsForQuery: connectionIdentifier = DED541CB-A3DA-4C04-8B23-ED20D13B147E
2009-12-05 00:14:46.843 Entendu[90565:207] Request succeeded for connectionIdentifier = DED541CB-A3DA-4C04-8B23-ED20D13B147E
2009-12-05 00:14:46.884 Entendu[90565:207] Got search results for DED541CB-A3DA-4C04-8B23-ED20D13B147E:
(
        {
        "created_at" = 1259989857;
        "from_user" = royanramadhan;
        "from_user_id" = 64716299;
        geo = <null>;
        id = 6361369664;
        "iso_language_code" = sv;
        "profile_image_url" = "http://a3.twimg.com/profile_images/455943541/Dup_01_Foto006_normal.jpg";
        source = "<a href=\"http://m.twitter.com/\" rel=\"nofollow\">mobile web</a>";
        "source_api_request_type" = 37;
        text = "kenapa di keybord komputer tulisnya \"ENTER\" ? #joke";
        "to_user_id" = <null>;
    },
        {
        "created_at" = 1259988269;
        "from_user" = alivenkickin;
        "from_user_id" = 2547330;
        geo = <null>;
        id = 6360783744;
        "iso_language_code" = en;
        "profile_image_url" = "http://a3.twimg.com/profile_images/65068323/calvin_normal.jpg";
        source = "<a href=\"http://www.tweetdeck.com/\" rel=\"nofollow\">TweetDeck</a>";
        "source_api_request_type" = 37;
        text = "RT @andycrash: A nice, calm and respectable lady went into the pharmacy...#joke http://bit.ly/BGDfJ";
        "to_user_id" = <null>;
    },
        {
        "created_at" = 1259988217;
        "from_user" = lilbytes;
        "from_user_id" = 18943691;
        geo = <null>;
        id = 6360764474;
        "iso_language_code" = en;
        "profile_image_url" = "http://a3.twimg.com/profile_images/477338701/twitterProfilePhoto_normal.jpg";
        source = "<a href=\"http://twitter.com/\">web</a>";
        "source_api_request_type" = 37;
        text = "RT @Pyeman: LOL - Great post RT @cahlan: RT @jac_: Christmas light fun: http://bit.ly/828q7K #lol #funny #joke #christmas";
        "to_user_id" = <null>;
    },
        {
        "created_at" = 1259987890;
        "from_user" = jscognam;
        "from_user_id" = 41472147;
        geo = <null>;
        id = 6360648482;
        "iso_language_code" = en;
        "profile_image_url" = "http://a3.twimg.com/profile_images/432856397/AJ_normal.png";
        source = "<a href=\"http://www.tweetdeck.com/\" rel=\"nofollow\">TweetDeck</a>";
        "source_api_request_type" = 37;
        text = "RT @jokestweet: Give me ambiguity or give me something else. #joke";
        "to_user_id" = <null>;
    },
        {
        "created_at" = 1259987587;
        "from_user" = jokestweet;
        "from_user_id" = 54008906;
        geo = <null>;
        id = 6360534281;
        "iso_language_code" = en;
        "profile_image_url" = "http://a1.twimg.com/profile_images/403925746/jokes_twitter_normal.jpg";
        source = "<a href=\"http://twitter.com/\">web</a>";
        "source_api_request_type" = 37;
        text = "Give me ambiguity or give me something else. #joke";
        "to_user_id" = <null>;
    },
        {
        "created_at" = 1259987426;
        "from_user" = RickyRicardoABN;
        "from_user_id" = 79758746;
        geo = <null>;
        id = 6360472740;
        "iso_language_code" = en;
        "profile_image_url" = "http://a3.twimg.com/profile_images/554599647/l_92120d47e5744fee9da32c4ac71b9eee_normal.jpg";
        source = "<a href=\"http://twitter.com/\">web</a>";
        "source_api_request_type" = 37;
        text = "#Why do people tell you when they are speechless? #joke";
        "to_user_id" = <null>;
    },
        {
        "created_at" = 1259984750;
        "from_user" = socialEspeaking;
        "from_user_id" = 80950838;
        geo = <null>;
        id = 6359413973;
        "iso_language_code" = en;
        "profile_image_url" = "http://a1.twimg.com/profile_images/542502866/jack_sm_normal.jpg";
        source = "<a href=\"http://apiwiki.twitter.com/\" rel=\"nofollow\">API</a>";
        "source_api_request_type" = 37;
        text = "RT @andycrash A nice, calm and respectable lady went into the pharmacy...#joke http://x4.lol.0sp.in o_O";
        "to_user_id" = <null>;
    },
        {
        "created_at" = 1259984140;
        "from_user" = oceanbutterfly7;
        "from_user_id" = 70740820;
        geo = <null>;
        id = 6359164521;
        "iso_language_code" = en;
        "profile_image_url" = "http://a1.twimg.com/profile_images/558958306/Tiger-puppy_love_normal.jpg";
        source = "<a href=\"/devices\" rel=\"nofollow\">txt</a>";
        "source_api_request_type" = 37;
        text = "@jokestweet: \" Hire a teenage while they still know everything,\" #joke";
        "to_user" = jokestweet;
        "to_user_id" = 54008906;
    },
        {
        "created_at" = 1259983842;
        "from_user" = "Fab_DTY";
        "from_user_id" = 51115644;
        geo = <null>;
        id = 6359037805;
        "iso_language_code" = en;
        "profile_image_url" = "http://a3.twimg.com/profile_images/515204077/moto_0326_normal.jpeg";
        source = "<a href=\"http://ubertwitter.com\" rel=\"nofollow\">UberTwitter</a>";
        "source_api_request_type" = 37;
        text = "RT @nutshellcards: Energizer Bunny arrested, charged with battery. lmao #Joke";
        "to_user_id" = <null>;
    },
        {
        "created_at" = 1259983640;
        "from_user" = chunyip;
        "from_user_id" = 1221169;
        geo = <null>;
        id = 6358953626;
        "iso_language_code" = en;
        "profile_image_url" = "http://s.twimg.com/a/1259808911/images/default_profile_6_normal.png";
        source = "<a href=\"http://mobileways.de/gravity\" rel=\"nofollow\">Gravity</a>";
        "source_api_request_type" = 37;
        text = "RT @jokestweet: If electricity comes from electrons, does that mean that morality comes from morons? #joke";
        "to_user_id" = <null>;
    },
        {
        "created_at" = 1259983356;
        "from_user" = nutshellcards;
        "from_user_id" = 54486591;
        geo = <null>;
        id = 6358837191;
        "iso_language_code" = en;
        "profile_image_url" = "http://a3.twimg.com/profile_images/515618469/blue_normal.png";
        source = "<a href=\"http://twitter.com/\">web</a>";
        "source_api_request_type" = 37;
        text = "Energizer Bunny arrested, charged with battery. lmao\n#Joke";
        "to_user_id" = <null>;
    },
        {
        "created_at" = 1259983222;
        "from_user" = sagewhistler;
        "from_user_id" = 3737203;
        geo = <null>;
        id = 6358780332;
        "iso_language_code" = en;
        "profile_image_url" = "http://a1.twimg.com/profile_images/552759084/cowboycig_normal.GIF";
        source = "<a href=\"http://twitter.com/\">web</a>";
        "source_api_request_type" = 37;
        text = "#Joke \"What's the shotgun for?\" asks the homeowner. The bear remover replies, \"If the bear knocks me off the roof, shoot the dog.\" [end]";
        "to_user_id" = <null>;
    },
        {
        "created_at" = 1259983181;
        "from_user" = sagewhistler;
        "from_user_id" = 3737203;
        geo = <null>;
        id = 6358763080;
        "iso_language_code" = en;
        "profile_image_url" = "http://a1.twimg.com/profile_images/552759084/cowboycig_normal.GIF";
        source = "<a href=\"http://twitter.com/\">web</a>";
        "source_api_request_type" = 37;
        text = "#Joke The bear will then be subdued enough for me to put him in the cage in the back of the van.\"He hands the shotgun to the homeowner...";
        "to_user_id" = <null>;
    },
        {
        "created_at" = 1259983144;
        "from_user" = sagewhistler;
        "from_user_id" = 3737203;
        geo = <null>;
        id = 6358748440;
        "iso_language_code" = en;
        "profile_image_url" = "http://a1.twimg.com/profile_images/552759084/cowboycig_normal.GIF";
        source = "<a href=\"http://twitter.com/\">web</a>";
        "source_api_request_type" = 37;
        text = "#Joke When the bear falls off, the pit bull is trained to grab his testicles and not let go...";
        "to_user_id" = <null>;
    },
        {
        "created_at" = 1259983112;
        "from_user" = sagewhistler;
        "from_user_id" = 3737203;
        geo = <null>;
        id = 6358736099;
        "iso_language_code" = en;
        "profile_image_url" = "http://a1.twimg.com/profile_images/552759084/cowboycig_normal.GIF";
        source = "<a href=\"http://twitter.com/\">web</a>";
        "source_api_request_type" = 37;
        text = "#Joke \"I'm going to put this ladder up against the roof, then I'm going to go up there & knock the bear off the roof with this baseball bat";
        "to_user_id" = <null>;
    },
        {
        "completed_in" = 0;
        "max_id" = 6361369664;
        "next_page" = "?page=2&max_id=6361369664&q=%23joke";
        page = 1;
        query = "%23joke";
        "refresh_url" = "?since_id=6361369664&q=%23joke";
        "results_per_page" = 15;
        "since_id" = 0;
        "source_api_request_type" = 37;
    }
)

La cosa strana è che ho contare: 5, ma mi sto molti più risultati.

Per l'analisi vera e propria, dovrei salvare l'output in un NSArray, e poi un NSDictionary, che posso interrogare con valueForKey: @ "testo", ad esempio

?

Lo so due metodi delegato sono chiamati troppo (requestSucceeded: e searchResultsReceived: forRequest:), ma io non sono sicuro di come questo influenza l'analisi.

Il metodo delegato effettivo per searchResultsReceived: forRequest: è: 

- (void)searchResultsReceived:(NSArray *)searchResults forRequest:(NSString *)connectionIdentifier
{
 NSLog(@"Got search results for %@:\r%@", connectionIdentifier, searchResults);
}

Questo suggerisce che i risultati sono effettivamente memorizzati searchResults variabili.

Ancora, come faccio a ottenere le singole stringhe?

Grazie per l'aiuto!

È stato utile?

Soluzione

La variabile searchResults nel vostro delegato è un array di dizionari. Hai solo indice in tale matrice e quindi avviare afferrando i valori per le chiavi nei dizionari. Ad esempio 

- (void)searchResultsReceived:(NSArray *)searchResults 
                   forRequest:(NSString *)connectionIdentifier
{
    if ([searchResults count] > 0)
    {
        NSDictionary *result = [searchResults objectAtIndex:0];

        NSString *fromUser = [result valueForKey:@"from_user"];
        NSString *fromUserID = [result valueForKey@"from_user_id"];
        // ...
        NSString *text = [result valueForKey@"text"];

        NSLog(@"User %@(%@): %@", fromUser, fromUserID, text);
    }
}

Altri suggerimenti

Non sono sicuro di quello che l'analisi che devi fare. Si suppone di essere la fornitura di un delegato al motore (come un callback, ma un oggetto reale), che il motore utilizzerà per notificare quando ha risultati. I risultati dovrebbero essere tornando indietro come un NSArray di NSDictionarys, il che significa che non c'è bisogno di fare qualsiasi analisi a tutti.

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