title: How to open PDF or TXT file in default app on Xamarin Forms
body: <p>I am going to open document using default app in Xamarin Forms. I tried already this approach but it doesn't work for me and I am not sure what is the reason.</p>
  
  <pre><code>Device.OpenUri(new Uri(FILE_PATH));
  </code></pre>
  
  <p>Please give me great solution if anyone knows how to handle it.
  Thanks.</p>