title: com.android.internal.R.id.content cannot be resolved to a variable in alarm clock code
body: <p>I am using the alarm clock code that I found and trying to customize it.</p>
  
  <p>But I get this error : "com.android.internal.R cannot be resolved to a variable "
  for code:</p>
  
  <pre><code>    getListView().setItemsCanFocus(true);
  
      // Grab the content view so we can modify it.
      FrameLayout content = (FrameLayout) getWindow().getDecorView()
              .findViewById(com.android.internal.R.id.content);
  </code></pre>
  
  <p>I am not sure what this piece of code is doing ( so that I could change it)
  Can you please help me resolve this by some alternative piece of code?</p>