How to parse this string received from TMDB in iOS

StackOverflow https://stackoverflow.com/questions/22729859

  •  23-06-2023
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Question

I am getting the popular movie data from TMDB in my iOS App. however i am having great trouble in parsing and getting the meaningful data from it. I am totally new to iOS. i have done similar thing in Windows Phone, where i created Poco's and used DataContractJsonSerializer to parse the data. but i am not getting any idea on how to do this in iOS. I want to retrieve id, original_title and poster path from this string.

this is the data i am getting
{
buffer =     {
    0 = 123;
    1 = 34;
    10 = 34;
    100 = 114; 
        3451 = 34;
        3452 = 58;
        3453 = 52;
        3454 = 54;
        3455 = 46;
        3456 = 55;
        3457 = 50;
        3458 = 49;
        3459 = 54;
        346 = 110;
        3460 = 49;
        3461 = 48;

      // lot of number in between 
        977 = 87;
        978 = 75;
        979 = 68;
        98 = 34;
        980 = 108;
        981 = 51;
        982 = 88;
        983 = 97;
        984 = 98;
        985 = 99;
        986 = 112;
        987 = 72;
        988 = 82;
        989 = 110;
        99 = 111;
        990 = 110;
        991 = 76;
        992 = 77;
        993 = 75;
        994 = 102;
        995 = 85;
        996 = 46;
        997 = 106;
        998 = 112;
        999 = 103;
        length = 5810;
    };
};
cookies =     {
};
data =     {
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            "original_title" = "The Necessary Death of Charlie Countryman";
            popularity = "110.726084305053";
            "poster_path" = "/fSwdCCGmO50IMaH4XMAixjclLDF.jpg";
            "release_date" = "2013-11-15";
            title = "The Necessary Death of Charlie Countryman";
            "vote_average" = "7.5";
            "vote_count" = 37;
        },
                    {
            adult = 0;
            "backdrop_path" = "/mrvlpJFAzKwZZkLm9VD7Rh2VECi.jpg";
            id = 116745;
            "original_title" = "The Secret Life of Walter Mitty";
            popularity = "64.2212199623452";
            "poster_path" = "/v3e1LdwTXupH9L78eIWCKBjclhJ.jpg";
            "release_date" = "2013-12-25";
            title = "The Secret Life of Walter Mitty";
            "vote_average" = "7.2";
            "vote_count" = 124;
        },
                    {
            adult = 0;
            "backdrop_path" = "/8aZHR0wXacn5DVYK3cS2ozWYPCN.jpg";
            id = 64686;
            "original_title" = "47 Ronin";
            popularity = "95.9101659814315";
            "poster_path" = "/v9JCVROrdlHZCWP3D6pnV8Xc29w.jpg";
            "release_date" = "2013-12-25";
            title = "47 Ronin";
            "vote_average" = "6.5";
            "vote_count" = 81;
        },
                    {
            adult = 0;
            "backdrop_path" = "/zZTyJ6fbWKDl3XabcpHRnnLMKfU.jpg";
            id = 249397;
            "original_title" = "Nymphomaniac: Vol. II";
            popularity = "94.03616025076791";
            "poster_path" = "/pCW6krILJ2L0rXDXH0715teKTtm.jpg";
            "release_date" = "2014-03-20";
            title = "Nymphomaniac: Vol. II";
            "vote_average" = "6.8";
            "vote_count" = 11;
        },
                    {
            adult = 0;
            "backdrop_path" = "/hyR7Fs6Tepgu3yCQGtgO4Ilz9tY.jpg";
            id = 57158;
            "original_title" = "The Hobbit: The Desolation of Smaug";
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            "poster_path" = "/gQCiuxGsfiXH1su6lp9n0nd0UeH.jpg";
            "release_date" = "2013-12-13";
            title = "The Hobbit: The Desolation of Smaug";
            "vote_average" = "7.6";
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        },
                    {
            adult = 0;
            "backdrop_path" = "/cAhCDpAq80QCeQvHytY9JkBalpH.jpg";
            id = 109445;
            "original_title" = Frozen;
            popularity = "69.4628746979819";
            "poster_path" = "/jIjdFXKUNtdf1bwqMrhearpyjMj.jpg";
            "release_date" = "2013-11-19";
            title = Frozen;
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        },
                    {
            adult = 0;
            "backdrop_path" = "/rP36Rx5RQh0rmH2ynEIaG8DxbV2.jpg";
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            "original_title" = "The Wolf of Wall Street";
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            "poster_path" = "/wAgdJRx4uZ0u4uzu34NOMvtjLAR.jpg";
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            title = "The Wolf of Wall Street";
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            adult = 0;
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            "original_title" = "Grudge Match";
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            "poster_path" = "/vzIIna3nvQAVGBBXbZgzvPSxg36.jpg";
            "release_date" = "2013-12-25";
            title = "Grudge Match";
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            "vote_count" = 16;
        },
                    {
            adult = 0;
            "backdrop_path" = "/mnxWdWTP3jbfxC4oaPrwevwvOZ2.jpg";
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            "original_title" = "300: Rise of an Empire";
            popularity = "49.8372271195572";
            "poster_path" = "/d4kPMHsoTEH3FIkBDJM0uVOlas6.jpg";
            "release_date" = "2014-03-07";
            title = "300: Rise of an Empire";
            "vote_average" = "6.6";
            "vote_count" = 102;
        },
                    {
            adult = 0;
            "backdrop_path" = "/rO75nODBBmJx4u5ZRy2BsGFgbO7.jpg";
            id = 177494;
            "original_title" = "Veronica Mars";
            popularity = "48.7870515185193";
            "poster_path" = "/nS3L07mQfcNJcisLEKgi8fWoBS1.jpg";
            "release_date" = "2014-03-14";
            title = "Veronica Mars";
            "vote_average" = "7.2";
            "vote_count" = 19;
        },
                    {
            adult = 0;
            "backdrop_path" = "/iJtq3PHsLgjcYIrNlT2glzEdBo5.jpg";
            id = 110415;
            "original_title" = Snowpiercer;
            popularity = "47.3945315956173";
            "poster_path" = "/3J4QoMpQYE2MehOTQG9X2KUP4aq.jpg";
            "release_date" = "2013-08-01";
            title = Snowpiercer;
            "vote_average" = "7.2";
            "vote_count" = 29;
        },
                    {
            adult = 0;
            "backdrop_path" = "/qMDiCjxfv6Y8JN2DFViTX5D1ORH.jpg";
            id = 24253;
            "original_title" = "Flickan som lekte med elden";
            popularity = "46.7216104479466";
            "poster_path" = "/qHRpU2d9NWB0WDulwgFwg6a9JRK.jpg";
            "release_date" = "2009-09-18";
            title = "The Girl Who Played with Fire";
            "vote_average" = "6.8";
            "vote_count" = 141;
        },
                    {
            adult = 0;
            "backdrop_path" = "/1DfcGAQ4EVIZFnveo1IzHFtgFTS.jpg";
            id = 175112;
            "original_title" = "The Pirate Fairy";
            popularity = "46.03463240154";
            "poster_path" = "/6VmPnBPDCTbpZ3Jj5lbgHD10IZm.jpg";
            "release_date" = "2014-04-01";
            title = "The Pirate Fairy";
            "vote_average" = "7.6";
            "vote_count" = 5;
        },
                    {
            adult = 0;
            "backdrop_path" = "/1RTiQXeHoEMXkZNWaB8W5uaEZ2.jpg";
            id = 205220;
            "original_title" = Philomena;
            popularity = "45.1210557523094";
            "poster_path" = "/6BTXHupSPkrwsoz4Br6qwwSVmhj.jpg";
            "release_date" = "2013-11-27";
            title = Philomena;
            "vote_average" = "7.5";
            "vote_count" = 31;
        },
                    {
            adult = 0;
            "backdrop_path" = "/wRCPG1lsgfTFkWJ7G3eWgxCgv0C.jpg";
            id = 101299;
            "original_title" = "The Hunger Games: Catching Fire";
            popularity = "41.4568100606251";
            "poster_path" = "/tAhSyLxpaZJCr1oc2a3flvC2B7x.jpg";
            "release_date" = "2013-11-22";
            title = "The Hunger Games: Catching Fire";
            "vote_average" = "7.7";
            "vote_count" = 518;
        },
                    {
            adult = 0;
            "backdrop_path" = "/hz3JfAikYXtaNWIJhWM4p5sy5OZ.jpg";
            id = 49047;
            "original_title" = Gravity;
            popularity = "40.0573419755177";
            "poster_path" = "/2gPjLWIyrWlAn2DgKMOKTBnZYyO.jpg";
            "release_date" = "2013-10-04";
            title = Gravity;
            "vote_average" = "7.9";
            "vote_count" = 751;
        },
                    {
            adult = 0;
            "backdrop_path" = "/3FweBee0xZoY77uO1bhUOlQorNH.jpg";
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            "original_title" = "Thor: The Dark World";
            popularity = "38.5511611536454";
            "poster_path" = "/aROh4ZwLfv9tmtOAsrnkYTbpujA.jpg";
            "release_date" = "2013-11-08";
            title = "Thor: The Dark World";
            "vote_average" = "7.1";
            "vote_count" = 503;
        },
                    {
            adult = 0;
            "backdrop_path" = "/dNPmXYRS3nN4vD7MLtz5lP79DCB.jpg";
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            "original_title" = "Teen Wolf";
            popularity = "37.546317184227";
            "poster_path" = "/3TKJbKNpHvRP8YVnwbgfok41AAC.jpg";
            "release_date" = "1985-08-23";
            title = "Teen Wolf";
            "vote_average" = "7.1";
            "vote_count" = 31;
        },
                    {
            adult = 0;
            "backdrop_path" = "/kJzvjhJP6Xf7QQofVl3y0NvpwmI.jpg";
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            popularity = "37.123709776744";
            "poster_path" = "/6bjfGrtUYmuZzFCia3TcvY0Kz1e.jpg";
            "release_date" = "2014-03-10";
            title = "Bad Country";
            "vote_average" = "5.5";
            "vote_count" = 3;
        },
                    {
            adult = 0;
            "backdrop_path" = "/6Ace8kIosYGnAiJUHgbLO4MNI6k.jpg";
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            "original_title" = DeadHeads;
            popularity = "36.41";
            "poster_path" = "/A7kD47MEXywqKPeKHrxBfkvPTqy.jpg";
            "release_date" = "2011-04-29";
            title = DeadHeads;
            "vote_average" = "5.8";
            "vote_count" = 6;
        }
    );
    "total_pages" = 7848;
    "total_results" = 156953;
};
headers =     {
    "Access-Control-Allow-Origin" = "*";
    Age = 3350;
    "Cache-Control" = "public, max-age=14400";
    Connection = "keep-alive";
    "Content-Length" = 5810;
    "Content-Type" = "application/json;charset=utf-8";
    Date = "Sat, 29 Mar 2014 10:14:03 GMT";
    ETag = "\"76070c8ebb216a66cbbc36e56c1407fa\"";
    Server = nginx;
    Status = "200 OK";
    Vary = "Accept-Encoding";
    Via = "1.0 localhost (squid/3.1.19)";
    "X-Apiary-Ratelimit-Limit" = 120;
    "X-Apiary-Ratelimit-Remaining" = 119;
    "X-Apiary-Transaction-Id" = 53369cebed260702000005cc;
    "X-Cache" = "HIT from localhost";
    "X-Cache-Lookup" = "HIT from localhost:3128";
    "X-Memc" = HIT;
    "X-Memc-Age" = 12648;
    "X-Memc-Expires" = 1752;
    "X-Memc-Key" = eb13032fb1ef09086dcaac2d14c098c0;
};
status = 200;
text = "{\"page\":1,\"results\":[{\"adult\":false,\"backdrop_path\":\"/AdRL6c4BoMJgk7ZFUB2oUVzav2p.jpg\",\"id\":41602,\"original_title\":\"The Necessary Death of Charlie Countryman\",\"release_date\":\"2013-11-15\",\"poster_path\":\"/fSwdCCGmO50IMaH4XMAixjclLDF.jpg\",\"popularity\":110.726084305053,\"title\":\"The Necessary Death of Charlie Countryman\",\"vote_average\":7.5,\"vote_count\":37},{\"adult\":false,\"backdrop_path\":\"/mrvlpJFAzKwZZkLm9VD7Rh2VECi.jpg\",\"id\":116745,\"original_title\":\"The Secret Life of Walter Mitty\",\"release_date\":\"2013-12-25\",\"poster_path\":\"/v3e1LdwTXupH9L78eIWCKBjclhJ.jpg\",\"popularity\":64.2212199623452,\"title\":\"The Secret Life of Walter Mitty\",\"vote_average\":7.2,\"vote_count\":124},{\"adult\":false,\"backdrop_path\":\"/8aZHR0wXacn5DVYK3cS2ozWYPCN.jpg\",\"id\":64686,\"original_title\":\"47 Ronin\",\"release_date\":\"2013-12-25\",\"poster_path\":\"/v9JCVROrdlHZCWP3D6pnV8Xc29w.jpg\",\"popularity\":95.9101659814315,\"title\":\"47 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uuid = "bb4cca64-b0c4-0308-b92f-49980466092c";

} The code that i tried till now

[MYCloud callFunctionInBackground:@"popularMovie"
                   withParameters:@{@"movie": @" "}
                            block:^(id response, NSError *error) {
                                if (!error) {
                                    // ratings is 4.5
                                    NSArray *movieArray;
                                    movieArray = [response allValues];
                                    NSDictionary *firstObject = [movieArray objectAtIndex:0];
                                    NSDictionary *entities = [firstObject objectForKey:@"results"];

                                    NSLog(@"json :%@",[response description]);

it crashes at NSDictionary *entities = [firstObject objectForKey:@"results"];

====================================================================================== this is the crash log on trying 

NSDictionary *blah = [NSJSONSerialization JSONObjectWithData:response options:0 error:nil];


2014-03-29 16:21:48.572 Moviez[6804:60b] -[__NSDictionaryM bytes]: unrecognized selector sent to instance 0x9daf000

2014-03-29 16:21:48.575 Moviez[6804:60b] * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSDictionaryM bytes]: unrecognized selector sent to instance 0x9daf000' * First throw call stack: ( 0 CoreFoundation 0x026271e4 exceptionPreprocess + 180 1 libobjc.A.dylib 0x023a68e5 objc_exception_throw + 44 2 CoreFoundation 0x026c4243 -[NSObject(NSObject) doesNotRecognizeSelector:] + 275 3 CoreFoundation 0x0261750b __forwarding + 1019 4 CoreFoundation 0x026170ee _CF_forwarding_prep_0 + 14 5 Foundation 0x020ec4bc -[_NSJSONReader findEncodingFromData:withBOMSkipLength:] + 36 6 Foundation 0x020ec66b -[_NSJSONReader parseData:options:] + 63 7 Foundation 0x020ecc30 +[NSJSONSerialization JSONObjectWithData:options:error:] + 161 8 Moviez 0x00002884 32-[HILViewController viewDidLoad]_block_invoke + 212 9 Moviez 0x00053f47 __40-[PFTask thenCallBackOnMainThreadAsync:]_block_invoke_2 + 241 10 libdispatch.dylib 0x02c7a7b8 _dispatch_call_block_and_release + 15 11 libdispatch.dylib 0x02c8f4d0 _dispatch_client_callout + 14 12 libdispatch.dylib 0x02c7d726 _dispatch_main_queue_callback_4CF + 340 13 CoreFoundation 0x0268c43e __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE + 14 14 CoreFoundation 0x025cd5cb __CFRunLoopRun + 1963 15 CoreFoundation 0x025cc9d3 CFRunLoopRunSpecific + 467 16 CoreFoundation 0x025cc7eb CFRunLoopRunInMode + 123 17 GraphicsServices 0x0420b5ee GSEventRunModal + 192 18 GraphicsServices 0x0420b42b GSEventRun + 104 19 UIKit 0x01066f9b UIApplicationMain + 1225 20 Moviez 0x00002ded main + 141 21 libdyld.dylib 0x02ec4701 start + 1 ) libc++abi.dylib: terminating with uncaught exception of type NSException

Était-ce utile?

La solution

UPDATED to match the full data you are getting

As you say response is already an NSDictionary so your code should be something like this...

// Results is an Array of movie entries
NSDictionary *movieData = [response objectForKey:@"data"];
NSArray * movieArray = [movieData objectForKey:@"results"];
NSDictionary *firstObject = [movieArray objectAtIndex:0];

Or in modern objective c you could do

NSDictionary *movieData = response[@"data"];
NSArray * movieArray = movieData[@"results"];
NSDictionary *firstObject = movieArray[0];

Or if you are really confident its always going to contain something you could do

NSDictionary *firstObject = response[@"data"][@"results"][0];

(I think)

Autres conseils

Well the top level object is an NSDictionary.

So...

NSDictionary *blah = [NSJSONSerialization JSONObjectWithData:theData options:0 error:nil];

That will turn the data into an object that you can use.

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