How do I parse JSON from a file in iOS? [closed]

Question

I am trying to parse data from a JSON file. I am trying to put that parsed/fetched data into a UIView with a label or in a webview. The JSON file looks something like the following:

{"bodytext": "<p>\n Some lines here about some webpage (&ldquo; <em>Site</>&rdquo;) some more lines here. \n </p>\n\n <p>\n some more stuff here </p>
}

There are posts here on Stack Overflow showing how to parse JSON retrieved from a Web URL, but I actually already have a JSON file I want to parse. How do I parse JSON from a file?

Answer 1

I have followed this and it is working fine

NSError *error = nil;
 NSString *filePath = [[NSBundle mainBundle] pathForResource:@"messages" 
                                                      ofType:@"json"];
 NSData *dataFromFile = [NSData dataWithContentsOfFile:filePath];
 NSDictionary *data = [NSJSONSerialization JSONObjectWithData:dataFromFile
                                                      options:kNilOptions
                                                        error:&error];
 if (error != nil) {
  NSLog(@"Error: was not able to load messages.");
  return nil;
 }

Answer 2

Swift 2.0 version of the accepted answer:

if let filePath = NSBundle.mainBundle().pathForResource("example", ofType: "json"), data = NSData(contentsOfFile: filePath) {
        do {
            let json = try NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.AllowFragments)
        }
        catch {
            //Handle error
        }
    }

Answer 3

1. Create empty text file (New File/Other/Empty) e.g. "example.json"

2. Paste json string into the file.

3. Use these lines to get the data:

   NSString *filePath = [[NSBundle mainBundle] pathForResource:@"example" ofType:@"json"];
   NSData *data = [NSData dataWithContentsOfFile:filePath];
   NSArray *json = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil];