Need get the count of likes
<p>I can't get done the count of likes. The users can like a post and I want Firebase count how many likes post gets from users. </p>

<p>My code:</p>

<pre><code>viewHolder.mThumb.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
    mProcessLikes = true;
    mDatabaseLikes.addValueEventListener(new ValueEventListener() {
       @Override
       public void onDataChange(DataSnapshot dataSnapshot) {
       if (mProcessLikes){
          if (dataSnapshot.child(post_key).hasChild(mAuth.getCurrentUser().getUid())){                                            mDatabaseLikes.child(post_key).child(mAuth.getCurrentUser().getUid()).removeValue();
          mProcessLikes = false;
          } else {mDatabaseLikes.child(post_key).child(mAuth.getCurrentUser().getUid()).setValue("like");
          mProcessLikes = false;
          }
       }
    }
    @Override
    public void onCancelled(DatabaseError databaseError) {}
    });
  }
});
</code></pre>

<p>What code should I add in the code above to achieve the result is showed on attached image?</p>

<p><a href="https://i.stack.imgur.com/qcvy9.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/qcvy9.png" alt="enter image description here"></a></p>