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POHow to de-serialize an object in objective-C
 

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    <p>I have an error when I try to make a wcf method work. One of the parameters are NSMutableArray and the Object type is TypeClass. I checked everything with the NSMutableArray and everything seems fine. </p> <p>My code for the parameter is:</p> <pre><code>NSData *myPostData = [[NSString stringWithFormat:@"{\"parameter1\":\"%@\"}",mynsmutablearraylist] dataUsingEncoding:NSUTF8StringEncoding]; NSMutableData *myMutablePostData = [NSMutableData dataWithData:myPostData]; </code></pre> <p>The parameter type in wcf is like List&lt; TypeClass>.</p> <p>I can see the values of the object and keys of the mynsmutablearraylist. But I can't understand why it doesn't work.</p> <p>This wcf method works for the Win8 metro application but I can't make it work for IOS.</p> <blockquote> <p>The server encountered an error processing the request. The exception message is 'The formatter threw an exception while trying to deserialize the message: There was an error while trying to deserialize parameter http://tempuri.org/:typeclass. The InnerException message was 'There was an error deserializing the object of type System.Collections.Generic.List`1[[ServiceOfMine.Entities.TypeClass, ServiceOfMine, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]. Encountered invalid character ' '.'. Please see InnerException for more details.'. See server logs for more details. The exception stack trace is: </p> </blockquote> <p><strong>Added Info:</strong></p> <p>When I test the parameters with the exactly the same values , it works fine. The part of the Request in SOAPUI:</p> <pre><code>&gt; &gt;.... &gt; &gt; &lt;tem: parameter4&gt;parvalue&lt;/tem: parameter4&gt; &gt; &gt; &lt; tem: typeclass&gt; &gt; &gt; &lt;!--Zero or more repetitions:--&gt; &gt; &gt; &lt;ser:TypeClass&gt; &gt; &gt; &gt; &gt; &lt;ser:drugId&gt;&lt;/ser:drugId&gt; &gt; &gt; &lt;ser:drugname&gt;&lt;/ser:drugname&gt; &gt; &gt; &lt;/ser:TypeClass&gt; &gt; &gt; &lt;ser:TypeClass&gt; &gt; &gt; &gt; &gt; &lt;ser:drugId&gt;&lt;/ser:drugId&gt; &gt; &gt; &lt;ser:drugname&gt;&lt;/ser:drugname&gt; &gt; &gt; &lt;/ser:TypeClass&gt; &gt; &gt; &lt;/ tem: typeclass&gt; &gt; &gt; ... </code></pre>
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    1. CODo you know the format of the expected data and what you're actually sending?
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    2. COIt will return a word with type NSString. Yes I know those. I checked them a lot with debug.
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    3. CO@user3065761: He didn't say the *type* of the data, he said the *format*. By doing `[NSString stringWithFormat:@"%@", someNSMutableArray]`, you use the default NSArray string formatting rather than the format that WCF is expecting. For example, the NSArray might give a string that looks like `(apple, banana, "organic lemon")`, while maybe WCF is expecting an array that looks like `["apple", "banana", "organic lemon"]`. (I don't actually know what WCF wants, but surely you can see there are multiple ways to format a list of things.)
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