title: onProviderEnabled not working?
body: <p>For switching between GPS &amp; Network location provider I just tried in a way like this, to identify when a provider is disabled switch to another, but my <code>onProviderEnabled()</code> is not getting invoked</p>
  
  <pre><code>public void onProviderDisabled(String provider) {
    Toast.makeText(TrackerService.this, "Disabled : " + provider, Toast.LENGTH_LONG).show();
  }
  public void onProviderEnabled(String provider) {
    Toast.makeText(TrackerService.this, "Enabled : " + provider, Toast.LENGTH_LONG).show()
  </code></pre>