title: Android: vibrator method (if phone has no vibrator?)
body: <p>I want to use the vibrator method in my app, and i have got it working on my phone which has a vibrator which is great. however phones that don't have a vibrator what happens. does it not work at all? does it stop the app working? or does it not show up in the market at all? or do i have to ask the phone if it has a vibrator?</p>
  
  <p>I would also like to know if this code is good or needs any adjustments? here is my code..</p>
  
  <pre><code>Vibrator vi;
  
  vi = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
  
  vi.vibrate(100);
  
  &lt;uses-permission android:name="android.permission.VIBRATE" /&gt; (In manifest)
  </code></pre>
  
  <p>Thanks, any help would be great.</p>