title: Xamarin polling without stuck
body: <p>I am implementing an APP with Xamarin.</p>
  <p>The app need to refresh data through Wi-Fi with device and show new data on screen.</p>
  <p>But when polling triggered. The app always stuck for few seconds.</p>
  <pre><code>    protected async override void OnAppearing()
      {
          //Show new data when entering this page
          await Polling();
  
  
      }
  
      async Task Polling()
      {
          await Read_Data();
          Show_Data();
      }
  </code></pre>
  <p>How could I do this without stuck. Make the app polling smoothly?</p>
  <p>I want to call the Polling() every 30 seconds.</p>
  <p>Thank you!</p>