title: Android - Rearranging elements according to number of child
body: <p>I'm building an Video conference application, where I want to rearrange participants' screens to be dynamically rearranged when anyone joins or leaves. e.g. for one participant, his screen will be in center, for two they will be side by side and for three triangular and so on...</p>
  
  <p>I'm using relative layout and adding views in the relative layout programmatically at joining. </p>
  
  <p>what approach should I use for the auto layout alignment with proper aspect ratio. Please help.</p>