title: consuming web service during splash screen in swift
body: <p>I am new in ios swift , </p>
  
  <p>how can I fetch data from webservice during splash screen time , </p>
  
  <p>In other words I want to make splash screen still appear until the app finish fetching data.</p>
  
  <p>I tried put <code> NSURLConnection.sendAsynchronousRequest</code> function in appdelegate but splash screen not wait sendAsynchronousRequest to finish</p>