title: Best practice for displaying error messages
body: <p><strong>What is the best way of displaying error messages to the user?</strong></p>
  
  <p>Assume the following scenario (just for example, this question relates to common problem, when error may occur in service, in the thread etc.):</p>
  
  <ol>
  <li>We load some data for some screen</li>
  <li>Error occurs (Internet is not available, server exception, other exceptions ...)</li>
  </ol>
  
  <p>How to show the error? Possible solutions:</p>
  
  <ol>
  <li>Show toasts - the simplest way but it is not the best (for many errors we'll see many toasts, even if the application works in the background) </li>
  <li>Show error somewhere in the screen (e.g. gmail shows 'No connection' at the bottom of the list and proposes to retry)</li>
  </ol>
  
  <p>What is your experience? How do you show user errors? Is there some guides explaining what is the best way?</p>