title: Activity layout not showing
body: <p>Im trying to call a second activity from my Main Activity, using this code</p>
  
  <pre><code>Intent goToOrder = new Intent(ListOfOrdersActivity.this, OrderSummaryActivity.class);
  startActivity(goToOrder);
  </code></pre>
  
  <p>Being my OrderSummaryActivity:</p>
  
  <pre><code>public class OrderSummaryActivity extends ActionBarActivity {
  
      @Override
      public void onCreate(Bundle savedInstanceState, PersistableBundle persistentState) {
          super.onCreate(savedInstanceState, persistentState);
          setContentView(R.layout.order_summary);
      }
  }
  </code></pre>
  
  <p>But the layout wont show on this activity, just a blank page.
  This is the xml of the layout:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
      android:orientation="vertical" android:layout_width="match_parent"
      android:layout_height="match_parent"&gt;
  
      &lt;TextView
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:text="@string/name"
          android:textSize="20sp"
          android:textStyle="bold"
          android:layout_margin="10dp"
          /&gt;
      &lt;TextView
          android:id="@+id/order_resume_name"
          android:layout_width="match_parent"
          android:layout_height="wrap_content" /&gt;
  
      &lt;TextView
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:text="@string/quantity"
          android:textSize="20sp"
          android:textStyle="bold"
          android:layout_margin="10dp"/&gt;
      &lt;TextView
          android:id="@+id/order_resume_quantity"
          android:layout_width="match_parent"
          android:layout_height="wrap_content" /&gt;
  
      &lt;TextView
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:text="@string/whipped_cream"
          android:textSize="20sp"
          android:textStyle="bold"
          android:layout_margin="10dp"/&gt;
      &lt;TextView
          android:id="@+id/order_resume_whipped_cream"
          android:layout_width="match_parent"
          android:layout_height="wrap_content" /&gt;
  
      &lt;TextView
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:text="@string/chocolate"
          android:textSize="20sp"
          android:textStyle="bold"
          android:layout_margin="10dp"/&gt;
      &lt;TextView
          android:id="@+id/order_resume_chocolate"
          android:layout_width="match_parent"
          android:layout_height="wrap_content" /&gt;
  
      &lt;TextView
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:text="@string/order_summary_total"
          android:textSize="20sp"
          android:textStyle="bold"
          android:layout_margin="10dp"/&gt;
      &lt;TextView
          android:id="@+id/order_resume_total"
          android:layout_width="match_parent"
          android:layout_height="wrap_content" /&gt;
  
  
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>Any hint?</p>