title: android vibrator turn on and turn off
body: <p>I'm making one part in my app where if you push the button then the phone will vibrate, and if you push the button again the phone will stop vibrating. I am using a Radio button for my button. my code is right now for the vibrate part:</p>
  
  <pre><code>                while(hard.isChecked()==true){
                      vt.vibrate(1000);
                  }
  </code></pre>
  
  <p>The phone vibrates but it doesn't like vibrate with full power, and the radio button does not change. I am also unable to turn it off because the phone basically freezes. Anybody have any ideas to fix this?</p>