Android ViewStub: Load all view data when just start onCreate?
<p>If I have 4 buttons on top, when click any one of it, I will inflate the corresponding viewstub. All the viewstub are listview and will get data from server.<br>
The questions is:  </p>

<ol>
<li>Should I load all the data (4 set of data) when just start
onCreate? But the loading time will very long.   </li>
<li>When should I load the data for each listview?   </li>
<li>When I click the other button and go to other view, will all the data be lost(other listview)?  </li>
<li>Will it cause memory problem because of loading too much data?  </li>
</ol>

<p>Thanks.</p>
