title: How to obtain amount of transferred data through Wi-Fi from other applications?
body: <p>I'm facing to this problem. I spent much time by searching some <code>API</code> or <em>"something"</em> with it's possible to obtain transferred data through Wi-Fi from other applications (how screenshot bellow shows).</p>
  
  <p>Does someone know a way how to do it? Is here someone who tried (or has already done) for something similar? Or a little differently: <em>Is this possible to do it?</em></p>
  
  <p>Currently i think that <strong>this is not possible</strong> because i think that non-system application cannot retrieve data from other application(s) installed on device. But maybe i can <em>"missing"</em> something so i placed this question and will be glad for whatever suggestion.</p>
  
  <p>Thanks in advance!</p>
  
  <p><img src="https://i.stack.imgur.com/u7pnW.png" alt="enter image description here"></p>