title: How to assign weight in Linear layout vertically?
body: <p>I need to show 3 button in row and 3 button in column means total 9 button on<br>
  screen. I assign <code>android:layout_weight</code> <code>0.33</code> to each in Horizontal LinearLayout. This is compatible with every screen but I need to also set weight vertically.  </p>
  
  <p>In Short I need to create one screen with 9 button and it should compatible with every screen. How can I do this? Can we set weight vertically if yes then how?</p>