title: How to pop up Enable Bluetooth prompt from Google Play Services?
body: <p>Application I'm working on uses both Locations and BLE and if location or bluetooth are disabled I have to ask user to enable them.</p>
  
  <p>Latest Google Play Services provides a standard way to do that using <code>LocationSettingsRequest</code> which checks requirements and raises standard popup if changes to settings are required. It works like a charm for location alone but once I add <code>SetNeedBle (true)</code> to <code>LocationSettingsRequest</code> I get a status <code>SETTINGS_CHANGE_UNAVAILABLE</code>.</p>
  
  <p>The only my guess was I need to add <code>AddApi (FitnessClass.BLE_API)</code> call to a <code>GoogleApiClientBuilder</code> as it might be vital for BLE functionality, but then I got connection to Google Play Services failed with <code>SIGN_IN_REQUIRED</code> status which is confusing as I just need BLE part of Fitness service.</p>
  
  <p>Does anyone know good example of <code>LocationSettingsRequest</code> usage to prompt user for both locations and bluetooth?</p>
  
  <p><a href="https://i.stack.imgur.com/KSaQA.png" rel="noreferrer"><img src="https://i.stack.imgur.com/KSaQA.png" alt="Location popup"></a></p>