title: same menu different activities
body: <p>I want to show the same menu (made with imageviews) on all my activies, and I try: </p>
  
  <pre><code>public class BaseActivity extends Activity {
  
      ImageView iv1;
      ...
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
      {
          super.onCreate(savedInstanceState);
  
          iv1 = (ImageView)findViewById(R.id.image1);
      }
  
      ...
  }
  </code></pre>
  
  <p>and the others activities looks like: </p>
  
  <pre><code>public class PlayersActivity extends BaseActivity {
      protected void onCreate (Bundle savedInstanceState){
          super.onCreate(savedInstanceState);
      }
  }
  </code></pre>
  
  <p>But, the activities don't see the ImageView that I defined on the BaseActivity.<br>
  I have a null object with the imageview.</p>