title: what's my application package name in android?
body: <p>I'm writing an android application.</p>
  
  <p>It has some packages under <code>src</code>.</p>
  
  <p>how can I figure out which of them is my application package?</p>
  
  <p>I want to add C@DM permissions:</p>
  
  <pre><code>&lt;permission android:name="YOUR_PACKAGE_NAME.permission.C2D_MESSAGE" android:protectionLevel="signature" /&gt;
  &lt;uses-permission android:name="YOUR_PACKAGE_NAME.permission.C2D_MESSAGE" /&gt;
  </code></pre>
  
  <p>how will my <code>YOUR_PACKAGE_NAME</code> change if I create a custom <code>MyApplication extends Application</code> class?</p>