title: Display <Key> over 2 <Row> in CustomKeyboardView?
body: <p>I made custom keyboards for my application based on this amazing research from Marteen Pennings : <a href="http://www.fampennings.nl/maarten/android/09keyboard/index.htm" rel="nofollow noreferrer">http://www.fampennings.nl/maarten/android/09keyboard/index.htm</a></p>
  
  <p>It's working great.</p>
  
  <p>I want to display a OK key in the same way the 'Enter' key is built on most hardware keyboard : big and 2 rows height. </p>
  
  <p>Any idea on how to do that ? Setting the key height to be double height is not working, the key is half displayed outside the screen (bottom). </p>
  
  <p>EDIT: 
  My keyboard bottom rows </p>
  
  <pre><code>    &lt;Row&gt;
      &lt;Key android:codes="87"    android:keyLabel="W" android:keyWidth="10%p" android:horizontalGap="20%p"/&gt;
      &lt;Key android:codes="88"    android:keyLabel="X" android:keyWidth="10%p"/&gt;
      &lt;Key android:codes="67"    android:keyLabel="C" android:keyWidth="10%p"/&gt;
      &lt;Key android:codes="86"    android:keyLabel="V" android:keyWidth="10%p"/&gt;
      &lt;Key android:codes="66"    android:keyLabel="B" android:keyWidth="10%p"/&gt;
      &lt;Key android:codes="78"    android:keyLabel="N" android:keyWidth="10%p"/&gt;
      &lt;Key android:codes="-6"    android:keyIcon="@drawable/sym_keyboard_done_48" android:keyWidth="20%p"/&gt;
  &lt;/Row&gt;
  &lt;Row &gt;
      &lt;Key android:codes="-5"     android:keyIcon="@drawable/sym_keyboard_delete" android:keyWidth="20%p"/&gt;
      &lt;Key android:codes="32"    android:keyLabel=" " android:keyWidth="50%p"/&gt;
      &lt;Key android:codes="-3" android:keyLabel="OK" android:keyWidth="30%p" /&gt;
  </code></pre>
  
  <p>I wish the left and right key of the last row expand on the upper row. </p>
  
  <p>Edit : I post a picture to explain my distress : <img src="https://i.stack.imgur.com/F01tr.png" alt="You can see the &#39;delete&#39; key has empty space above and I want this delete key to claim it"></p>
  
  <p>Solved : <img src="https://i.stack.imgur.com/Rfl6B.png" alt="enter image description here"></p>