title: Android - Vibrating device doesn't work
body: <p>I actually have an app that I test with two devices. One LG GW620, and one Samsung Spica.
  I would like when User touch the screen, the device vibrate. </p>
  
  <p>In fact, On the LG GW620, the device vibrate when I touch it. But on the spica doesn't...</p>
  
  <p>I looked for settings on the spica, but Vibrator is check, so I don't understand why it doesn't vibrate.</p>
  
  <p>In my app I have : <code>&lt;uses-permission android:name="android.permission.VIBRATE"&gt;&lt;/uses-permission&gt;</code></p>
  
  <p>and in the code :           </p>
  
  <pre><code>Vibrator vibrator =(Vibrator)getSystemService(Context.VIBRATOR_SERVICE);
              vibrator.vibrate(100);
  </code></pre>
  
  <p>But I think it is not the best thing to do that. I wish device vibrate for every click, but I don't know if I have to do a Vibrator for each OnClick ? Or if I could do only one Vibrator for all the application ?<br>
  And especially why it doesn't work on Spica ?</p>