دى الخطوه الاخير اسم المحادثه واخر رساله والوقت

ChatsAdapter.java

// set group name
        if (mDataSet.get(position).isGroup()) {
            viewHolder.getUser_name().setText(mDataSet.get(position).getName());
        } else {
            final String encodedEmail = Utils.cutMailFromText(mContext, mDataSet.get(position).getName());
            final DatabaseReference userLocation = FirebaseDatabase.getInstance()
                    .getReferenceFromUrl(Constants.FIREBASE_URL_USERS)
                    .child(encodedEmail);
            userLocation.addListenerForSingleValueEvent(new ValueEventListener() {
                @Override
                public void onDataChange(DataSnapshot dataSnapshot) {
                    UserFireBasePOJO user = dataSnapshot.getValue(UserFireBasePOJO.class);
                    // here set group name and image of conversation
                    viewHolder.getUser_name().setText(user.getName());

                    // set chat avatar for user
                    Picasso.with(mContext)
                            .load(user.getAvatarUrl())
                            .placeholder(R.drawable.group_placeholder)
                            .into(viewHolder.getConversationAvatar());
                }

                @Override
                public void onCancelled(DatabaseError databaseError) {

                }
            });
        }

        // get last message and timestamp
        final DatabaseReference mainLocation = FirebaseDatabase.getInstance()
                .getReferenceFromUrl(Constants.FIREBASE_URL);
        mainLocation.child(Constants.FIREBASE_LOCATION_MESSAGES)
                .child(mDataSet.get(position).getGroupId()).limitToLast(1)
                .addChildEventListener(new ChildEventListener() {
                    @Override
                    public void onChildAdded(DataSnapshot dataSnapshot, String s) {
                        if (dataSnapshot.getValue() != null) {
                            Messages message = dataSnapshot.getValue(Messages.class);
                            viewHolder.getLast_message().setText(message.getMessage());
                            viewHolder.getTimeStamp().setText(Utils.manipulateDateFormat(Utils.convertTime(message.getTimestamp())));
                        }
                    }

                    @Override
                    public void onChildChanged(DataSnapshot dataSnapshot, String s) {

                    }

                    @Override
                    public void onChildRemoved(DataSnapshot dataSnapshot) {

                    }

                    @Override
                    public void onChildMoved(DataSnapshot dataSnapshot, String s) {

                    }

                    @Override
                    public void onCancelled(DatabaseError databaseError) {

                    }
                });