title: Facebook Android SDK Invalid_key
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/4848067/login-failed-invalid-key-error-with-facebook-sdk">Login failed invalid key error with Facebook SDK</a>  </p>
  </blockquote>
  
  
  
  <p>I am using a sample app for here ibm.com/developerworks/library/x-androidfacebookapi/
  to test facebook android SDK,
  I have given my APP ID in this sample app.
  I have done all setups and prerequisites.
  I have signed app with my keystore and generated hash key
  I submitted hash key to facebook app settings page,
  I installed facebook app on my device.
  But after all doing the app gives Facebook error invalid_key.
  Pls help me in this regards,
  Thank you.</p>