title: where & how to use onKey,onkeyDown,onKeyPressed event in android?
body: <p>hi
    where to use onKey and onKeyUp/Down event in android.</p>
  
  <p>e.g. i have one textview . when user pressed any key i want to display that character in textview,
       In this case which event(above) is used.</p>
  
  <pre><code>PLEASE explain with EXAMPLE 
  </code></pre>
  
  <p>Or give some other example that get the key event and print in edittext or some other.</p>
  
  <p>Thanks in advance...</p>