title: What exactly does using the Application Context mean?
body: <p>I'm new to this and I'm sorry if this is a really dumb question. I'm just trying to clarify things. My book says I can retrieve application context for process by using the <code>getApplicationContext()</code> method. I just really don't know where to type this or what to do with any of it. I can go to the hierarchy but what do I do with all the script there. Also where would I write Activity Callbacks, in the main.xml? An exercise wants me to add a logging tag to my project but I'm not sure how to do this. The exact text says:</p>
  
  <blockquote>
    <p>"Within the onCreate() callback method, add an informational logging message, using the Log.i() method." </p>
  </blockquote>
  
  <p>and another exercise says to:</p>
  
  <blockquote>
    <p>"Implement some of the Activity callback methods in addition to onCreate(), such as onStart(). Add a log message to each callback method and then run the application normally". </p>
  </blockquote>
  
  <p>As these seem like basic questions, can someone please help me. </p>
  
  <p>I am using the Android SDK, and Eclipse. I have made the Hello World application, but I have no idea what to do with Context or Retrieving resources. Please help!</p>