title: when I tried to add twitter frame work in my iPhone project i gets this error: OBJC_CLASS$_SLRequest.How can I solve
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/13117122/twitter-framework-in-ios-6">Twitter Framework in IOS 6</a>  </p>
  </blockquote>
  
  
  
  <p>I have integrated <code>twitter framework</code> in my iPhone project.But I am getting the error provided below.How can I Resolve it?</p>
  
  <pre><code>"undefined symbols for architecture i386:
   "_SLServiceTypeTwitter", referenced from:
  
       ___32-[ViewController TwitterAccount]_block_invoke_0 in ViewController.o
  ld: symbol(s) not found for architecture i386
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  </code></pre>
  
  <p>"</p>
  
  <p>Thanks in advance.</p>