Examples with ValueEventListener com.google.firebase.database.ValueEventListener used on opensource projects

Example 31 with ValueEventListener

use of com.google.firebase.database.ValueEventListener in project NPSmiles by bmcglynn1.

the class NewsFragment method onCreateView.

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    final View viewer = inflater.inflate(R.layout.activity_news_feed, container, false);
    View popupLayout = inflater.inflate(R.layout.popup_layout_logged_in, null);
    final ListView list = (ListView) viewer.findViewById(R.id.list);
    final ArrayList<NewsMessage> newsList = new ArrayList<>();
    FirebaseDatabase database = FirebaseDatabase.getInstance();
    DatabaseReference myRef = database.getReference("Reference");
    mAuth = FirebaseAuth.getInstance();
    if (mAuth.getCurrentUser() != null) {
        list.setOnItemClickListener(new AdapterView.OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                PopupMenu popup = new PopupMenu(parent.getContext(), view);
                popup.getMenuInflater().inflate(R.menu.popup_menu, popup.getMenu());
                final TextView title = (TextView) view.findViewById(R.id.title);
                final TextView message = (TextView) view.findViewById(R.id.information);
                if (mAuth.getCurrentUser() != null) {
                    popup.show();
                    popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {

                        @Override
                        public boolean onMenuItemClick(MenuItem item) {
                            switch(item.getItemId()) {
                                case R.id.EditMenu:
                                    // refresh view if needed
                                    break;
                                case R.id.DeleteMenu:
                                    // delete from firebase
                                    // refresh view
                                    FirebaseDatabase database = FirebaseDatabase.getInstance();
                                    DatabaseReference myRef = database.getReference("Reference");
                                    Query titleQuery = myRef.child(title.getText().toString());
                                    titleQuery.addListenerForSingleValueEvent(new ValueEventListener() {

                                        @Override
                                        public void onDataChange(DataSnapshot dataSnapshot) {
                                            for (DataSnapshot titleSnapshot : dataSnapshot.getChildren()) {
                                                dataSnapshot.getRef().removeValue();
                                            }
                                        }

                                        @Override
                                        public void onCancelled(DatabaseError databaseError) {
                                        }
                                    });
                                    break;
                            }
                            return true;
                        }
                    });
                }
            }
        });
    }
    myRef.addValueEventListener(new ValueEventListener() {

        @Override
        public void onDataChange(DataSnapshot dataSnapshot) {
            newsList.clear();
            for (DataSnapshot newsItem : dataSnapshot.getChildren()) {
                NewsMessage newsMessage = new NewsMessage();
                for (DataSnapshot item : newsItem.getChildren()) {
                    if (item.getKey().equals("title")) {
                        newsMessage.setTitle((String) item.getValue());
                    } else if (item.getKey().equals("message")) {
                        newsMessage.setMessage((String) item.getValue());
                    } else {
                        newsMessage.setDate((String) item.getValue());
                    }
                }
                newsList.add(newsMessage);
            }
            Collections.sort(newsList);
            CustomAdapter adapter = new CustomAdapter(context, newsList);
            list.setAdapter(adapter);
        }

        @Override
        public void onCancelled(DatabaseError databaseError) {
        }
    });
    return viewer;
}

Example 32 with ValueEventListener

use of com.google.firebase.database.ValueEventListener in project MadMax by deviz92.

the class MainActivity method itemLongClicked.

// Apro popup menu quando ho tenuto premuto un friend o gruppo per 1 secondo
@Override
public void itemLongClicked(String fragmentName, final String itemID, final View v) {
    Log.i(TAG, "fragmentName " + fragmentName + " itemID " + itemID);
    FragmentManager fragmentManager = getSupportFragmentManager();
    FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
    Bundle bundle = new Bundle();
    Intent intent = null;
    switch(fragmentName) {
        case "FriendsFragment":
            PopupMenu popup = new PopupMenu(MainActivity.this, v, Gravity.RIGHT);
            popup.getMenuInflater().inflate(R.menu.longclick_popup_menu, popup.getMenu());
            one = popup.getMenu().findItem(R.id.one);
            one.setTitle("Remove Friend");
            popup.getMenu().findItem(R.id.two).setVisible(false);
            popup.getMenu().findItem(R.id.three).setVisible(false);
            // registering popup with OnMenuItemClickListener
            popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {

                public boolean onMenuItemClick(MenuItem item) {
                    FirebaseUtils.getInstance().removeFromFriends(currentUID, itemID);
                    Toast.makeText(MainActivity.this, getString(R.string.friend_removed), Toast.LENGTH_SHORT).show();
                    return true;
                }
            });
            // showing popup menu
            popup.show();
            break;
        case "GroupsFragment":
            popup = new PopupMenu(MainActivity.this, v, Gravity.RIGHT);
            popup.getMenuInflater().inflate(R.menu.longclick_popup_menu, popup.getMenu());
            one = popup.getMenu().findItem(R.id.one);
            one.setTitle("Leave this Group");
            two = popup.getMenu().findItem(R.id.two);
            two.setTitle("Remove this Group");
            popup.getMenu().findItem(R.id.three).setVisible(false);
            // registering popup with OnMenuItemClickListener
            popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {

                public boolean onMenuItemClick(MenuItem item) {
                    switch((String) item.getTitle()) {
                        case "Leave this Group":
                            Integer returnValue = FirebaseUtils.getInstance().leaveGroupFirebase(currentUID, itemID);
                            if (returnValue == 0) {
                                Toast toast = Toast.makeText(getApplicationContext(), getString(R.string.credit_group), Toast.LENGTH_LONG);
                                toast.show();
                            } else if (returnValue == 1) {
                                makeText(getApplicationContext(), getString(R.string.debit_group), Toast.LENGTH_LONG).show();
                            } else if (returnValue == 2) {
                                makeText(getApplicationContext(), getString(R.string.leaving), Toast.LENGTH_LONG).show();
                            } else if (returnValue == null) {
                                makeText(getApplicationContext(), getString(R.string.balance_not_available), Toast.LENGTH_LONG).show();
                            }
                            break;
                        case "Remove this Group":
                            FirebaseUtils.getInstance().removeGroupFirebase(currentUID, itemID, getApplicationContext());
                            break;
                    }
                    return true;
                }
            });
            // showing popup menu
            popup.show();
            break;
        case "PendingExpensesFragment":
            popup = new PopupMenu(MainActivity.this, v, Gravity.RIGHT);
            popup.getMenuInflater().inflate(R.menu.longclick_popup_menu, popup.getMenu());
            one = popup.getMenu().findItem(R.id.one);
            one.setTitle("Remove Pending");
            popup.getMenu().findItem(R.id.two).setVisible(false);
            popup.getMenu().findItem(R.id.three).setVisible(false);
            // registering popup with OnMenuItemClickListener
            popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {

                public boolean onMenuItemClick(MenuItem item) {
                    databaseReference.child("proposedExpenses").child(itemID).child("creatorID").addListenerForSingleValueEvent(new ValueEventListener() {

                        @Override
                        public void onDataChange(DataSnapshot dataSnapshot) {
                            if (MainActivity.getCurrentUser().getID().matches(dataSnapshot.getValue(String.class))) {
                                FirebaseUtils.getInstance().removePendingExpenseFirebase(itemID, getApplicationContext());
                            // add event for PENDING_EXPENSE_REMOVE
                            /*databaseReference.child("proposedExpenses").child(itemID)
                                            .addListenerForSingleValueEvent(new ValueEventListener() {
                                                                                @Override
                                                                                public void onDataChange(DataSnapshot dataSnapshot) {
                                                                                    User currentUser = MainActivity.getCurrentUser();
                                                                                    Event event = new Event(
                                                                                            dataSnapshot.child("groupID").getValue(String.class),
                                                                                            Event.EventType.PENDING_EXPENSE_REMOVE,
                                                                                            currentUser.getName() + " " + currentUser.getSurname(),
                                                                                            dataSnapshot.child("description").getValue(String.class)
                                                                                    );
                                                                                    event.setDate(new SimpleDateFormat("yyyy.MM.dd").format(new java.util.Date()));
                                                                                    event.setTime(new SimpleDateFormat("HH:mm").format(new java.util.Date()));
                                                                                    FirebaseUtils.getInstance().addEvent(event);
                                                                                }

                                                                                @Override
                                                                                public void onCancelled(DatabaseError databaseError) {
                                                                                    Log.w(TAG, databaseError.toException());
                                                                                }
                                                                            }
                                            );*/
                            } else
                                Toast.makeText(MainActivity.this, getString(R.string.not_creator), Toast.LENGTH_SHORT).show();
                        }

                        @Override
                        public void onCancelled(DatabaseError databaseError) {
                        }
                    });
                    return true;
                }
            });
            // showing popup menu
            popup.show();
            break;
    }
}

Example 33 with ValueEventListener

use of com.google.firebase.database.ValueEventListener in project MadMax by deviz92.

the class ExpensesFragment method onCreateView.

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    RecyclerView recyclerView;
    RecyclerView.LayoutManager layoutManager;
    setInterface((OnItemClickInterface) getActivity(), (OnItemLongClickInterface) getActivity());
    View view = inflater.inflate(R.layout.skeleton_list, container, false);
    Bundle bundle = getArguments();
    groupID = bundle.getString("groupID");
    RecyclerView.ItemDecoration divider = new InsetDivider.Builder(getContext()).orientation(InsetDivider.VERTICAL_LIST).dividerHeight(getResources().getDimensionPixelSize(R.dimen.divider_height)).color(ContextCompat.getColor(getContext(), R.color.colorDivider)).insets(getResources().getDimensionPixelSize(R.dimen.divider_inset), 0).overlay(true).build();
    recyclerView = (RecyclerView) view.findViewById(R.id.rv_skeleton);
    layoutManager = new LinearLayoutManager(getActivity(), LinearLayoutManager.VERTICAL, false);
    recyclerView.setLayoutManager(layoutManager);
    recyclerView.addItemDecoration(divider);
    expensesViewAdapter = new ExpensesViewAdapter(this.getContext(), this, this, expensesMap);
    recyclerView.setAdapter(expensesViewAdapter);
    groupRef = databaseReference.child("groups");
    Log.d(TAG, groupID);
    // retrieving group details for current group
    groupRef.child(groupID).child("expenses").addValueEventListener(new ValueEventListener() {

        @Override
        public void onDataChange(DataSnapshot expensesSnapshot) {
            for (DataSnapshot expense : expensesSnapshot.getChildren()) {
                FirebaseUtils.getInstance().getExpense(expense.getKey(), expensesMap, expensesViewAdapter);
                Log.d(TAG, expense.getKey());
            }
            expensesViewAdapter.update(expensesMap);
        }

        @Override
        public void onCancelled(DatabaseError error) {
            // Failed to read value
            Log.w(TAG, "Failed to read value.", error.toException());
        }
    });
    return view;
}

Example 34 with ValueEventListener

use of com.google.firebase.database.ValueEventListener in project MadMax by deviz92.

the class BarDetailFragment method onCreateView.

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    mainView = inflater.inflate(R.layout.fragment_bar_detail, container, false);
    imageView = (ImageView) mainView.findViewById(R.id.img_photo);
    nameTextView = (TextView) mainView.findViewById(R.id.tv_bar_name);
    emailTextView = (TextView) mainView.findViewById(R.id.tv_email);
    balanceLayout = (RelativeLayout) mainView.findViewById(R.id.lv_balance_layout);
    balanceTextView = (TextView) mainView.findViewById(R.id.tv_balance_text);
    balanceView = (TextView) mainView.findViewById(R.id.tv_balance);
    payButton = (Button) mainView.findViewById(R.id.btn_pay_debt);
    initCollapsingToolbar();
    SharedPreferences sharedPref = PreferenceManager.getDefaultSharedPreferences(this.getContext());
    defaultCurrency = sharedPref.getString(SettingsFragment.DEFAULT_CURRENCY, "");
    // Extract data from bundle
    Bundle bundle = this.getArguments();
    if (activityName.equals("FriendDetailActivity")) {
        if (bundle != null) {
            payButton.setVisibility(View.GONE);
            // Extract data from bundle
            friendID = bundle.getString("friendID");
            // Show data of friend
            databaseReference.child("users").child(friendID).addListenerForSingleValueEvent(new ValueEventListener() {

                @Override
                public void onDataChange(DataSnapshot dataSnapshot) {
                    String name = dataSnapshot.child("name").getValue(String.class);
                    String surname = dataSnapshot.child("surname").getValue(String.class);
                    String email = dataSnapshot.child("email").getValue(String.class);
                    nameTextView.setText(name + " " + surname);
                    emailTextView.setText(email);
                    // Loading profile image
                    String photo = dataSnapshot.child("image").getValue(String.class);
                    if (photo != null) {
                        Glide.with(getActivity()).load(photo).centerCrop().diskCacheStrategy(DiskCacheStrategy.ALL).into(imageView);
                    } else {
                        Glide.with(getActivity()).load(R.drawable.user_default).centerCrop().diskCacheStrategy(DiskCacheStrategy.ALL).into(imageView);
                    }
                    balanceLayout.setVisibility(View.GONE);
                }

                @Override
                public void onCancelled(DatabaseError databaseError) {
                }
            });
        }
    } else if (activityName.equals("GroupDetailActivity")) {
        if (bundle != null) {
            // Extract data from bundle
            groupID = bundle.getString("groupID");
            userID = bundle.getString("userID");
            setInterface((OnItemClickInterface) getActivity());
            payButton.setOnClickListener(new View.OnClickListener() {

                @Override
                public void onClick(View v) {
                    Log.d(TAG, "Clicked payButton");
                    // Suppongo di non avere debiti in nessuna valuta
                    Boolean mustPay = false;
                    String currency = null;
                    // Se ho debiti in anche una sola valuta, allora posso entrare nella PayGroupActivity
                    for (Map.Entry<String, Double> entry : totBalances.entrySet()) {
                        if (entry.getValue() < 0) {
                            mustPay = true;
                            currency = entry.getKey();
                        }
                    }
                    // Se ho debiti in almeno una valuta
                    if (mustPay) {
                        Intent intent = new Intent(getActivity(), PayGroupActivity.class);
                        intent.putExtra("groupID", groupID);
                        intent.putExtra("userID", userID);
                        intent.putExtra("totBalances", totBalances);
                        intent.putExtra("shownCurrency", currency);
                        intent.putExtra("groupName", groupName);
                        intent.putExtra("groupImage", image);
                        startActivity(intent);
                    } else // Se non ho debiti in nessuna valuta
                    {
                        Toast.makeText(getActivity(), getString(R.string.no_debts_to_pay), Toast.LENGTH_SHORT).show();
                    }
                }
            });
            balanceView.setOnClickListener(new View.OnClickListener() {

                @Override
                public void onClick(View v) {
                    Log.d(TAG, "Clicked balance");
                    Intent intent = new Intent(getActivity(), BalancesActivity.class);
                    intent.putExtra("balances", totBalances);
                    intent.putExtra("groupID", groupID);
                    startActivity(intent);
                }
            });
            // retrieve data of group
            groupListener = databaseReference.child("groups").child(groupID).addValueEventListener(new ValueEventListener() {

                @Override
                public void onDataChange(DataSnapshot dataSnapshot) {
                    if (!listenedGroup)
                        listenedGroup = true;
                    // totBalance = 0d;
                    totBalances.clear();
                    // Retrieve group name
                    groupName = dataSnapshot.child("name").getValue(String.class);
                    if (groupName != null)
                        nameTextView.setText(groupName);
                    // Retrieve group image
                    image = dataSnapshot.child("image").getValue(String.class);
                    if (image != null && !image.equals("noImage")) {
                        Log.d(TAG, "Nome gruppo: " + dataSnapshot.child("name").getValue(String.class) + "  Immagine: " + image);
                        // Loading group image into bar
                        Glide.with(getActivity()).load(dataSnapshot.child("image").getValue(String.class)).centerCrop().diskCacheStrategy(DiskCacheStrategy.ALL).into(imageView);
                    } else {
                        Log.d(TAG, "Nome gruppo: " + dataSnapshot.child("name").getValue(String.class) + "  Immagine di default");
                        // Loading group image into bar
                        Glide.with(getActivity()).load(R.drawable.group_default).centerCrop().diskCacheStrategy(DiskCacheStrategy.ALL).into(imageView);
                    }
                    // Retrieve group balances in all currencies
                    for (DataSnapshot groupExpenseSnapshot : dataSnapshot.child("expenses").getChildren()) {
                        // Se la spesa non è stata eliminata
                        if (groupExpenseSnapshot.getValue(Boolean.class) == true) {
                            // Ascolto la singola spesa del gruppo
                            final String expenseID = groupExpenseSnapshot.getKey();
                            Log.d(TAG, "considero la spesa " + expenseID);
                            databaseReference.child("expenses").child(expenseID).addListenerForSingleValueEvent(new ValueEventListener() {

                                @Override
                                public void onDataChange(DataSnapshot dataSnapshot) {
                                    // dice se user contribuisce o no a quella spesa
                                    Boolean involved = false;
                                    for (DataSnapshot participantSnapshot : dataSnapshot.child("participants").getChildren()) {
                                        if (participantSnapshot.getKey().equals(userID))
                                            involved = true;
                                    }
                                    if (involved) {
                                        // alreadyPaid = soldi già messi dallo user per quella spesa
                                        // dueImport = quota che user deve mettere per quella spesa
                                        // balance = credito/debito dello user per quella spesa
                                        Double alreadyPaid = dataSnapshot.child("participants").child(userID).child("alreadyPaid").getValue(Double.class);
                                        Double dueImport = dataSnapshot.child("participants").child(userID).child("fraction").getValue(Double.class) * dataSnapshot.child("amount").getValue(Double.class);
                                        Double balance = alreadyPaid - dueImport;
                                        String currency = dataSnapshot.child("currency").getValue(String.class);
                                        // current balance for that currency
                                        Double temp = totBalances.get(currency);
                                        // update balance for that currency
                                        if (temp != null) {
                                            totBalances.put(currency, temp + balance);
                                        } else {
                                            totBalances.put(currency, balance);
                                        }
                                        // se user per quella spesa ha già pagato più soldi della sua quota, il balance è positivo
                                        // totBalance += balance;
                                        Boolean multipleCurrencies = false;
                                        balanceLayout.setVisibility(View.VISIBLE);
                                        if (!totBalances.isEmpty()) {
                                            // If there is more than one currency
                                            if (totBalances.size() > 1) {
                                                multipleCurrencies = true;
                                            } else // If there is just one currency
                                            {
                                                multipleCurrencies = false;
                                            }
                                            if (totBalances.containsKey(defaultCurrency)) {
                                                shownBal = totBalances.get(defaultCurrency);
                                                shownCurr = defaultCurrency;
                                            } else {
                                                shownCurr = (String) totBalances.keySet().toArray()[0];
                                                shownBal = totBalances.get(shownCurr);
                                            }
                                            // Print balance
                                            if (shownBal > 0) {
                                                balanceTextView.setText(R.string.you_should_receive);
                                                if (multipleCurrencies)
                                                    balanceView.setText(df.format(shownBal) + " " + shownCurr + "*");
                                                else
                                                    balanceView.setText(df.format(shownBal) + " " + shownCurr);
                                            } else if (shownBal < 0) {
                                                balanceTextView.setText(R.string.you_owe);
                                                if (multipleCurrencies)
                                                    balanceView.setText(df.format(Math.abs(shownBal)) + " " + shownCurr + "*");
                                                else
                                                    balanceView.setText(df.format(Math.abs(shownBal)) + " " + shownCurr);
                                            } else if (shownBal == 0) {
                                                balanceTextView.setText(R.string.no_debts);
                                                balanceView.setText("0 " + defaultCurrency);
                                            }
                                        } else // If there are no balances in the map
                                        {
                                            balanceTextView.setText(R.string.no_debts);
                                            balanceView.setText("0 " + defaultCurrency);
                                        }
                                        Log.d(TAG, "sono coinvolto nella spesa " + expenseID + ", dovevo " + dueImport + ", ho dato " + alreadyPaid);
                                    }
                                }

                                @Override
                                public void onCancelled(DatabaseError databaseError) {
                                    balanceTextView.setText("Balance not available");
                                    balanceLayout.setVisibility(View.VISIBLE);
                                }
                            });
                        }
                    }
                // Ora ho finito di calcolare i bilanci
                /*
                        if(totBalance<0)
                            balanceTextView.setText(getString(R.string.negative_balance));
                        else
                            balanceTextView.setText(getString(R.string.positive_balance));
                            */
                }

                @Override
                public void onCancelled(DatabaseError databaseError) {
                    availableGroupData = false;
                }
            });
        }
    }
    return mainView;
}

Example 35 with ValueEventListener

use of com.google.firebase.database.ValueEventListener in project MadMax by deviz92.

the class DetailFragment method onCreateView.

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    // create the view to return
    View mainView = null;
    // get the bundle
    Bundle bundle = this.getArguments();
    // the listener will be the GroupDetailActivity or the FriendDetailActivity
    setInterface((OnItemClickInterface) getActivity());
    databaseReference = FirebaseDatabase.getInstance().getReference();
    // when an item in the list will be clicked the onListItemClicked will be called
    groupsViewAdapter = new GroupsViewAdapter(this.getContext(), this, groups, DetailFragment.TAG);
    if (activityName.equals("FriendDetailActivity")) {
        Log.d(TAG, "FriendDetailActivity per RecylerView");
        // Inflate the layout for this fragment
        mainView = inflater.inflate(R.layout.skeleton_list_friend, container, false);
        RecyclerView.ItemDecoration divider = new InsetDivider.Builder(getContext()).orientation(InsetDivider.VERTICAL_LIST).dividerHeight(getResources().getDimensionPixelSize(R.dimen.divider_height)).color(ContextCompat.getColor(getContext(), R.color.colorDivider)).insets(getResources().getDimensionPixelSize(R.dimen.divider_inset), 0).overlay(true).build();
        recyclerView = (RecyclerView) mainView.findViewById(R.id.rv_skeleton);
        layoutManager = new LinearLayoutManager(getActivity(), LinearLayoutManager.VERTICAL, false);
        recyclerView.setLayoutManager(layoutManager);
        recyclerView.addItemDecoration(divider);
        recyclerView.setAdapter(groupsViewAdapter);
        // Extract data from bundle
        friendID = bundle.getString("friendID");
        // Show shared groups
        databaseReference.child("users").child(MainActivity.getCurrentUser().getID()).child("friends").child(friendID).child("sharedGroups").addListenerForSingleValueEvent(new ValueEventListener() {

            @Override
            public void onDataChange(DataSnapshot dataSnapshot) {
                for (DataSnapshot sharedGroupSnapshot : dataSnapshot.getChildren()) {
                    FirebaseUtils.getInstance().getGroup(sharedGroupSnapshot.getKey(), groups, groupsViewAdapter);
                }
            }

            @Override
            public void onCancelled(DatabaseError databaseError) {
            }
        });
    } else if (activityName.equals("GroupDetailActivity")) {
        groupID = bundle.getString("groupID");
        mainView = inflater.inflate(R.layout.fragment_group_detail, container, false);
        fab = (FloatingActionButton) getActivity().findViewById(R.id.fab);
        fab.setImageResource(android.R.drawable.ic_input_add);
        TabLayout tabLayout = (TabLayout) mainView.findViewById(R.id.tab_layout);
        tabLayout.addTab(tabLayout.newTab().setText(R.string.expenses));
        tabLayout.addTab(tabLayout.newTab().setText(R.string.members));
        tabLayout.addTab(tabLayout.newTab().setText(R.string.activities));
        tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
        updateFab(0);
        final ViewPager viewPager = (ViewPager) mainView.findViewById(R.id.main_view_pager);
        final DetailFragment.PagerAdapter adapter = new DetailFragment.PagerAdapter(getActivity().getSupportFragmentManager(), tabLayout.getTabCount());
        viewPager.setAdapter(adapter);
        viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
        tabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {

            @Override
            public void onTabSelected(TabLayout.Tab tab) {
                Log.d(TAG, "selected tab " + tab.getPosition());
                updateFab(tab.getPosition());
                viewPager.setCurrentItem(tab.getPosition());
            }

            @Override
            public void onTabUnselected(TabLayout.Tab tab) {
            }

            @Override
            public void onTabReselected(TabLayout.Tab tab) {
            }
        });
    }
    return mainView;
}