title: Send Parse Push to everyone from Android App
body: <p>Maybe anyone can help me ! I want to send a push notification just to every registered device from a simple android app. (to everyone). There are working examples how to make this possible with php but i don´t know how to send a push notification to all (without channel) to all ?</p>
  
  <p>I have found this information so far but its not working </p>
  
  <p>My Channel is "" and the goal is to send a push to all devices !</p>
  
  <pre><code>    ParseQuery pushQuery = ParseInstallation.getQuery();
          pushQuery.whereEqualTo("channels", "");
  
  
    ParsePush push = new ParsePush();
          push.setQuery(pushQuery); // Set our Installation query
          push.setMessage("Hello world!");
          push.sendInBackground();
  </code></pre>
  
  <p>I have changed my code like this but it is still not working ! </p>
  
  <pre><code>ParsePush.subscribeInBackground("bugatti", new SaveCallback() {
              @Override
              public void done(ParseException e) {
                  if (e == null) {
                      Log.d("com.parse.push", "successfully subscribed to the broadcast channel.");
                  } else {
                      Log.e("com.parse.push", "failed to subscribe for push", e);
                  }
              }
          });
  
  
    ParseQuery pushQuery = ParseInstallation.getQuery();
         pushQuery.whereEqualTo("channels", "bugatti");
  
     ParsePush push = new ParsePush();
        push.setQuery(pushQuery); 
          push.setChannel("bugatti");
          push.setMessage("Hello world!");
          push.sendInBackground();
  </code></pre>
  
  <p>Would be nice if anybody could help me ! </p>