title: Android app - Show another activity in small window when pressing the button
body: <p>I'm new developer in android ...and programming with intellij .</p>
  
  <p>How i can show another activty when i pressing the button and close it when i release my finger of button ?
  Similar to samsung keyboard that when we pressing the key show the larger version of that above it ?</p>
  
  <p>I'm really need to know it .. thanks for your helps .</p>