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copied!<p>First, your string <code>json</code> does not contain the quotation characters you think it does. You have to "escape" a quote in a string with a backslash for it to not terminate the string. Your line:</p> <pre><code>NSString *json = @"{nid:"",vocab:"",inturl:testoverview, mail:chh@fbr.dk, md5pw:4d57e7ef1b7c3f431aca424764e9d786}"; </code></pre> <p>is being parsed like this:</p> <pre><code>NSString *json = @"{nid:" ",vocab:" ",inturl:testoverview, mail:chh@fbr.dk, md5pw:4d57e7ef1b7c3f431aca424764e9d786}"; </code></pre> <p>That is, it's three quoted strings in sequence. The compiler concatenates adjacent string literals. So, the effect is this:</p> <pre><code>NSString *json = @"{nid:,vocab:,inturl:testoverview, mail:chh@fbr.dk, md5pw:4d57e7ef1b7c3f431aca424764e9d786}"; </code></pre> <p>with no embedded quote characters.</p> <p>What you wanted to write was:</p> <pre><code>NSString *json = @"{nid:\"\",vocab:\"\",inturl:testoverview, mail:chh@fbr.dk, md5pw:4d57e7ef1b7c3f431aca424764e9d786}"; </code></pre> <p>Can you show the output of:</p> <pre><code>NSData *jsonData = [NSJSONSerialization dataWithJSONObject:jsonDictionary options:NSJSONWritingPrettyPrinted error:&error]; </code></pre> <p>I don't see where you would get an "=" character.</p> <hr> <p>Update:</p> <p>This code (modified from your question):</p> <pre><code>NSString *nid = @""; NSString *vocab = @""; NSString *inturl = @"testoverview"; NSString *mail = @"chh@fbr.dk"; NSString *md5pw = @"4d57e7ef1b7c3f431aca424764e9d786"; NSDictionary *jsonDictionary = [NSDictionary dictionaryWithObjectsAndKeys: nid, @"nid", vocab, @"vocab", inturl, @"inturl", mail, @"mail", md5pw, @"md5pw",nil]; NSError *error; NSData *jsonData = [NSJSONSerialization dataWithJSONObject:jsonDictionary options:NSJSONWritingPrettyPrinted error:&error]; NSString *resultAsString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding]; NSLog(@"jsonData as string:\n%@", resultAsString); </code></pre> <p>gives this output:</p> <pre><code>jsonData as string: { "md5pw" : "4d57e7ef1b7c3f431aca424764e9d786", "nid" : "", "inturl" : "testoverview", "mail" : "chh@fbr.dk", "vocab" : "" } </code></pre> <p>if you use <code>0</code> instead of <code>NSJSONWritingPrettyPrinted</code>, it gives:</p> <pre><code>jsonData as string: {"md5pw":"4d57e7ef1b7c3f431aca424764e9d786","nid":"","inturl":"testoverview","mail":"chh@fbr.dk","vocab":""} </code></pre>

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