[[NSCFString objectForKey：]：无法识别的选择器已发送到实例

Posted 2021-04-19

在此代码中：

- (void)connectionDidFinishLoading:(NSURLConnection *)connection {      

//---initialize the array--- 
listOfJMovies = [[NSMutableArray alloc] init];
listOfJMoviePosters = [[NSMutableArray alloc] init];
tmdbMovies = [[NSArray alloc] init];
posters = [[NSArray alloc] init];
thumbs = [[NSArray alloc] init];

//---set the title--- 
self.navigationItem.title = @"Movies";

NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];

//NSLog(responseString);

SBJsonParser *json = [[SBJsonParser new] autorelease];
tmdbMovies = [json objectWithString:responseString error:nil];

for (id movie in tmdbMovies) {
    [listOfJMovies addObject:[movie objectForKey:@"name"]];
    NSLog(@"Name: %@", [movie objectForKey:@"name"]);
    //[listOfJMoviePosters addObject:[obj objectForKey:@"posters"]];
    //NSLog(@"%@", [obj objectForKey:@"posters"]);

    posters = [movie objectForKey:@"posters"];

    for (id image in posters) {
        NSLog(@"image: %@", [image objectForKey:@"image"]);
        thumbs = [image objectForKey:@"image"];

        for (id url in thumbs) {


            NSLog(@"Size: %@", [url objectForKey:@"size"]);

            //NSLog(@"blah");
            //[listOfJMoviePosters addObject:[url objectForKey:@"size"]];

        }



    }

}


[[self tableView] reloadData];

[responseString release];
[connection release];
[responseData release];


}

此行：NSLog（@“大小：％@”，[url objectForKey：@“大小”]）;

正在导致应用程序崩溃并引发以下错误：

2010-12-30 00：33：29.730 FlixIt [33132：207]-[NSCFString objectForKey：]：无法识别的选择器已发送到实例0x4e50f002010-12-30 00：33：29.732 FlixIt [33132：207] *由于未捕获的异常'NSInvalidArgumentException'而终止应用程序，原因：'-[NSCFString objectForKey：]：无法识别的选择器已发送至实例0x4e50f00'

这里是JSON：http://api.themoviedb.org/2.1/Movie.browse/en-US/json/e5084159b962a8f0c39096f379a1363c?order_by=rating&order=desc&genres=18&min_votes=5&page=1&per_page=10