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ios - 如何在 iOS 中解析从 TMDB 收到的这个字符串

转载 作者：行者123 更新时间：2023-11-29 03:06:23 25 4
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我正在我的 iOS 应用程序中从 TMDB 获取热门电影数据。但是我在解析和从中获取有意义的数据时遇到了很大的麻烦。我对 iOS 完全陌生。我在 Windows Phone 中做过类似的事情，在那里我创建了 Poco 并使用 DataContractJsonSerializer 来解析数据。但我不知道如何在 iOS 中执行此操作。我想从此字符串中检索 id、original_title 和海报路径。

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;
    };
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uuid = "bb4cca64-b0c4-0308-b92f-49980466092c";

}我到目前为止尝试的代码

[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]);

它在 NSDictionary *entities = [firstObject objectForKey:@"results"] 处崩溃；

============================================= =======================================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“NSInvalidArgumentException”而终止应用程序，原因:“-[__NSDictionaryM 字节]:无法识别的选择器发送到实例 0x9daf000”* 首先抛出调用栈:( 0 CoreFoundation 0x026271e4 异常预处理 + 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 基金会 0x020ec4bc -[_NSJSONReader findEncodingFromData:withBOMSkipLength:] + 36 6 基金会 0x020ec66b -[_NSJSONReader parseData:options:] + 63 7 基金会 0x020ecc30 +[NSJSONSerialization JSONObjectWithData:options:error:] + 161 8 Moviez 0x00002884 <强>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 核心基础 0x0268c43e __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE + 14 14 核心基础 0x025cd5cb __CFRunLoopRun + 1963 15 核心基础 0x025cc9d3 CFRunLoopRunSpecific + 467 16 核心基础 0x025cc7eb CFRunLoopRunInMode + 123 17 图形服务 0x0420b5ee GSEventRunModal + 192 18 图形服务 0x0420b42b GSEventRun + 104 19 UIKit 0x01066f9b UIApplicationMain + 1225 20 电影 0x00002ded 主要 + 141 21 libdyld.dylib 0x02ec4701 开始 + 1)libc++abi.dylib:以 NSException 类型的未捕获异常终止

最佳答案

已更新以匹配您获得的完整数据

正如你所说，response 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 objective-c 中你可以这样做

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

或者如果你真的有信心它总是包含你可以做的事情

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

(我认为)

关于ios - 如何在 iOS 中解析从 TMDB 收到的这个字符串，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/22729859/

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