我在iOS App中从TMDB获取流行的电影数据。但是我在解析和从中获取有意义的数据时遇到了很大麻烦。我是iOS新手。我在Windows Phone中做过类似的事情，我创建了Poco，并使用DataContractJsonSerializer来解析数据。 但我不知道如何在iOS中这样做。 我想从这个字符串中检索id，original_title和poster路径。
this is the data i am getting
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10 = 34;
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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 = {
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Date = "Sat, 29 Mar 2014 10:14:03 GMT";
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uuid = "bb4cca64-b0c4-0308-b92f-49980466092c";
} 我到现在为止尝试的代码
[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]);
它崩溃在NSDictionary * entities = [firstObject objectForKey：@＆＃34; results＆＃34;];
=============================================== ======================================= 这是尝试
时的崩溃日志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] *由于未捕获的异常终止应用程序＆＃39; NSInvalidArgumentException＆＃39;，原因：＆＃39; - [__ NSDictionaryM字节]：无法识别的选择器发送到实例0x9daf000＆＃39; * 第一次抛出调用堆栈： （ 0 CoreFoundation 0x026271e4 exceptionPreprocess + 180 1 libobjc.A.dylib 0x023a68e5 objc_exception_throw + 44 2 CoreFoundation 0x026c4243 - [NSObject（NSObject）doesNotRecognizeSelector：] + 275 3 CoreFoundation 0x0261750b __ 转发 + 1019 4 CoreFoundation 0x026170ee _CF_forwarding_prep_0 + 14 5基础0x020ec4bc - [_ NSJSONReader findEncodingFromData：withBOMSkipLength：] + 36 6基础0x020ec66b - [_ NSJSONReader parseData：options：] + 63 7基础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：以NSException类型的未捕获异常终止
答案 0 :(得分：1)
更新以匹配您获得的完整数据
正如你所说，响应已经是一个NSDictionary，所以你的代码应该是这样的......
// Results is an Array of movie entries
NSDictionary *movieData = [response objectForKey:@"data"];
NSArray * movieArray = [movieData objectForKey:@"results"];
NSDictionary *firstObject = [movieArray objectAtIndex:0];
或者在现代目标c中你可以做到
NSDictionary *movieData = response[@"data"];
NSArray * movieArray = movieData[@"results"];
NSDictionary *firstObject = movieArray[0];
或者如果你真的相信它总会包含你可以做的事情
NSDictionary *firstObject = response[@"data"][@"results"][0];
（我认为）
答案 1 :(得分：0)
顶级对象是NSDictionary。
因此...
NSDictionary *blah = [NSJSONSerialization JSONObjectWithData:theData options:0 error:nil];
这会将数据转换为您可以使用的对象。