title: How to find the activity xml file to which the activity in manifest file corresponds to?
body: <p>I am an Android newbie, so this question might sound a little silly....</p>
  
  <p>So far, I know that you can know which activity is the Main one (ie which activity is launched when the activity first starts) by finding the intent-filter as such:</p>
  
  <pre><code>&lt;intent-filter&gt;
              &lt;action android:name="android.intent.action.MAIN" /&gt;
              &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
          &lt;/intent-filter&gt;
  </code></pre>
  
  <p>But, my problem is that how does Android know which XML file corresponds to that activity?? I have downloaded some source code for learning, and there are many XML files, each one for a different activity. So, I am kind of lost as to how to find the XML file for one particular activity.....</p>