title: Google Maps API V2 - always get authentication error
body: <p>I found lots of questions regarding this - and I am almost ashamed to ask it myself.</p>
  
  <p>But no matter how hard I try, I simple <em>do not get the Maps API running</em> at all!</p>
  
  <p>Not with the demo project, com.example.mapdemo, not with my own project.</p>
  
  <p>I definitely have my debug.keystore SHA1 fingerprint registered, now for both my app and com.example - I also tried the browser API key where everybody says that would work, too.</p>
  
  <p>BUT NO.</p>
  
  <p>I always get:</p>
  
  <pre><code>06-16 11:21:29.860: E/Google Maps Android API(2382): Authorization failure.  Please see https://developers.google.com/maps/documentation/android/start for how to correctly set up the map.
  </code></pre>
  
  <p>I am getting REALLY, REALLY mad at this. How is it possible to NOT completely and thoroughly describe this matter so that people that are otherwise able to program Android apps, can follow and succeed??</p>
  
  <p>HOW?</p>
  
  <p>Could anybody please tell me what else could be wrong?</p>
  
  <p>Add-on: I set up everything exactly according to the specs, got my key from my debug.keystore, tried it with com.example for the maps demo, with my own package for my app. Does not work.
  Plus: that silly empty window. How on earth is that gonna work... :-(</p>