title: android button layout not appears
body: <p>hey I'm doing an android app, someone can tell me why is not showing button mi_perfil on my andriod screen? this is my layout code:</p>
  
  <pre><code>&lt;LinearLayout 
      android:id="@+id/linearLayout"
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
      android:gravity="center_horizontal"
       &gt;
  
        &lt;ImageView
          android:id="@+id/foto"
          android:layout_width="48dp"
          android:layout_height="48dp"
          android:layout_marginRight="6dip"
          android:layout_marginLeft="20dip" /&gt; 
  
              &lt;LinearLayout 
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:id="@+id/linearLayout2"
              android:gravity="center_horizontal"
              android:layout_toRightOf="@id/linearLayout"
              android:orientation="vertical" &gt;
  
                  &lt;TextView
                      android:id="@+id/txt3"
                      android:layout_width="match_parent"
                      android:layout_height="34dp"
                       /&gt;
  
                   &lt;TextView
                      android:id="@+id/txt4"
                      android:layout_width="match_parent"
                      android:layout_height="34dp"
                      /&gt;
  
                  &lt;TextView
                      android:id="@+id/txt2"
                      android:layout_width="match_parent"
                      android:layout_height="34dp"
                      android:text="@string/Importar_Contactos"  /&gt;
  
              &lt;/LinearLayout&gt;
  
     &lt;Button android:id="@+id/miPerfil"
              android:layout_height="match_parent"
              android:layout_width="match_parent"
              android:text="@string/boton_mi_perfil"
              android:onClick="MiPerfil"
              android:layout_marginRight="20dip"
              android:layout_marginLeft="6dip" /&gt;     
  
     &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>I want to put the button on the right of my screen, but it doesn't appears.</p>
  
  <p>Thanks.</p>