Separating android app function's and design
<p>i am writing new android app. It's my first app on android. </p>

<p>I want to separate functions of app (retrieving data from sqlite, requesting and handling data from   web service) etc... and design (layouts, interaction between activities, animation).</p>

<p>So maybe someone work like this and could give me some idea's how this should work. Maybe there are some examples.</p>

<p>I think of creating one big class which would main function class and there would be all methods these methods would call other classes for current of need.</p>

<p>In java i would do this:</p>

<pre><code>MainClass main = new MainClass();

main.getUsersName();
....
</code></pre>

<p>but programming with android i don't no how to do this.</p>

<p>Thank you all for help.</p>
