title: Android : How to put a (Hint) link that pops up a window
body: <p>I am developing an Android application and I need to put a link beside a Text Edit in a form.</p>
  
  <p>The link will pop up a window that holds a tool tip for the user.</p>
  
  <p>EDIT : I want to put some sort of a link beside the text field and, when the user clicks on this link, a pop up window appears and tells him how to fill this text field.</p>
  
  <p>How can I do this in Android ?</p>
  
  <p>Can anyone help me please ?</p>