Sending Push notifications from parse in android

Question

I have been trying to send a simple push notification from one device to the other using parse and I am with no luck.

Lets say I have a twitter clone that has follow/unfollow feature, if for instance User-A begins to follow User-A all I am trying to do is notify User-A that he is now being followed by User-B

This is the simple code that I am running

  ParseQuery query = ParseInstallation.getQuery();
  query.whereEqualTo("userId",  "0VZF1l5qyA");

  // Notification for Android users
  ParsePush androidPush = new ParsePush();
  androidPush.setMessage("Your suitcase has been filled with tiny robots!");
  androidPush.setQuery(query);
  androidPush.sendInBackground();

Just to even make sure that it works, I hard coded the value in but still nothing is being sent. And it also not like the user that I am trying to target is not on the server.

This how my installation table looks

I think something as simple as this should just work. Or maybe I missing how push notifications work. By the way I am able to send push notifications from the Parse web app. FYI - I have read the entire section of this and still not getting it to work.

Addendum: I have this block of code in my main activity and modified my manifest to look like this.

    // Associate the device with a user
    ParseInstallation installation = ParseInstallation.getCurrentInstallation();
    installation.put("user",ParseUser.getCurrentUser());
    installation.put("userId",ParseUser.getCurrentUser().getObjectId());
    installation.saveInBackground();

Answer 1

By default clients are not allowed to push notification. You MUST do the following else your app wont work!!