title: Android: when should I use singleInstance launchmode
body: <p>There are four launch modes for an Activity, standard, singletop, singletask, and singleInstance. The previous three are relatively easy understanding and widely used. But till now, I did not find any scenario using singleInstance.</p>
  
  <blockquote>
    <p><a href="https://inthecheesefactory.com/blog/understand-android-activity-launchmode/en" rel="nofollow noreferrer">Some of the real use case is an Activity for Launcher or the application that you are 100% sure there is only one Activity</a></p>
  </blockquote>
  
  <p>Have any one used it before?</p>