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

Example 66 with DatabaseReference

use of com.google.firebase.database.DatabaseReference in project quickstart-android by firebase.

the class PostListFragment method onActivityCreated.

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    // Set up Layout Manager, reverse layout
    mManager = new LinearLayoutManager(getActivity());
    mManager.setReverseLayout(true);
    mManager.setStackFromEnd(true);
    mRecycler.setLayoutManager(mManager);
    // Set up FirebaseRecyclerAdapter with the Query
    Query postsQuery = getQuery(mDatabase);
    FirebaseRecyclerOptions options = new FirebaseRecyclerOptions.Builder<Post>().setQuery(postsQuery, Post.class).build();
    mAdapter = new FirebaseRecyclerAdapter<Post, PostViewHolder>(options) {

        @Override
        public PostViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
            LayoutInflater inflater = LayoutInflater.from(viewGroup.getContext());
            return new PostViewHolder(inflater.inflate(R.layout.item_post, viewGroup, false));
        }

        @Override
        protected void onBindViewHolder(PostViewHolder viewHolder, int position, final Post model) {
            final DatabaseReference postRef = getRef(position);
            // Set click listener for the whole post view
            final String postKey = postRef.getKey();
            viewHolder.itemView.setOnClickListener(new View.OnClickListener() {

                @Override
                public void onClick(View v) {
                    // Launch PostDetailFragment
                    NavController navController = Navigation.findNavController(requireActivity(), R.id.nav_host_fragment);
                    Bundle args = new Bundle();
                    args.putString(PostDetailFragment.EXTRA_POST_KEY, postKey);
                    navController.navigate(R.id.action_MainFragment_to_PostDetailFragment, args);
                }
            });
            // Determine if the current user has liked this post and set UI accordingly
            if (model.stars.containsKey(getUid())) {
                viewHolder.starView.setImageResource(R.drawable.ic_toggle_star_24);
            } else {
                viewHolder.starView.setImageResource(R.drawable.ic_toggle_star_outline_24);
            }
            // Bind Post to ViewHolder, setting OnClickListener for the star button
            viewHolder.bindToPost(model, new View.OnClickListener() {

                @Override
                public void onClick(View starView) {
                    // Need to write to both places the post is stored
                    DatabaseReference globalPostRef = mDatabase.child("posts").child(postRef.getKey());
                    DatabaseReference userPostRef = mDatabase.child("user-posts").child(model.uid).child(postRef.getKey());
                    // Run two transactions
                    onStarClicked(globalPostRef);
                    onStarClicked(userPostRef);
                }
            });
        }
    };
    mRecycler.setAdapter(mAdapter);
}

Example 67 with DatabaseReference

use of com.google.firebase.database.DatabaseReference in project FirebaseUI-Android by firebase.

the class FirebaseArrayOfObjectsTest method testCacheInvalidates.

@Test
public void testCacheInvalidates() throws Exception {
    final DatabaseReference pushRef = mRef.push();
    // Set initial value to "5"
    runAndWaitUntil(mArray, () -> pushRef.setValue(new Bean(5), 100), () -> mArray.get(3).getNumber() == 5);
    // Change the value to "6" and ensure that the change is propagated
    runAndWaitUntil(mArray, () -> pushRef.setValue(new Bean(6), 100), () -> mArray.get(3).getNumber() == 6);
}

Example 68 with DatabaseReference

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

the class ProposedExpenseCommentsFragment method onCreateView.

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    RecyclerView recyclerView;
    RecyclerView.LayoutManager layoutManager;
    String expenseID;
    View view = inflater.inflate(R.layout.skeleton_list, container, false);
    Bundle fragmentArguments = getArguments();
    expenseID = fragmentArguments.getString("expenseID");
    RecyclerView.ItemDecoration divider = new InsetDivider.Builder(getContext()).orientation(InsetDivider.VERTICAL_LIST).dividerHeight(getResources().getDimensionPixelSize(R.dimen.divider_height)).color(getResources().getColor(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);
    expenseCommentsViewAdapter = new ExpenseCommentsViewAdapter(this.getContext(), this, commentsMap, getFragmentManager());
    recyclerView.setAdapter(expenseCommentsViewAdapter);
    DatabaseReference expenseRef = databaseReference.child("proposedExpenses");
    expenseRef.child(expenseID).child("comments").addValueEventListener(new ValueEventListener() {

        @Override
        public void onDataChange(DataSnapshot commentSnapshot) {
            for (DataSnapshot comment : commentSnapshot.getChildren()) {
                FirebaseUtils.getInstance().getComment(comment.getKey(), commentsMap, expenseCommentsViewAdapter);
                Log.d(TAG, comment.getKey());
            }
            expenseCommentsViewAdapter.update(commentsMap);
        }

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

Example 69 with DatabaseReference

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

the class NewExpenseActivity method onOptionsItemSelected.

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    DatabaseReference groupRef;
    int itemThatWasClickedId = item.getItemId();
    if (itemThatWasClickedId == R.id.action_save) {
        if (!validateForm())
            return true;
        // display message if text field is empty
        Toast.makeText(getBaseContext(), getString(R.string.expense_saved), Toast.LENGTH_SHORT).show();
        final Expense newExpense = new Expense();
        newExpense.setDescription(description.getText().toString());
        newExpense.setAmount(Double.valueOf(amount.getText().toString()));
        newExpense.setCurrency(currency.getSelectedItem().toString());
        newExpense.setGroupID(groupID);
        newExpense.setCreatorID(userID);
        newExpense.setEquallyDivided(true);
        newExpense.setDeleted(false);
        Log.d(TAG, "Before first access to firebase");
        if (equalSplit)
            addEqualExpense(newExpense, groupID);
        else
            addUnequalExpense(newExpense, groupID, members);
    }
    this.finish();
    return super.onOptionsItemSelected(item);
}

Example 70 with DatabaseReference

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

the class NewExpenseActivity method addEqualExpense.

void addEqualExpense(final Expense newExpense, final String groupID) {
    DatabaseReference groupRef = databaseReference.child("groups");
    groupRef.child(groupID).child("members").addListenerForSingleValueEvent(new ValueEventListener() {

        @Override
        public void onDataChange(DataSnapshot membersSnapshot) {
            int participantsCount = 0;
            // Attenzione! Non contare i membri eliminati tra i partecipanti alla spesa
            for (DataSnapshot memberSnap : membersSnapshot.getChildren()) {
                if (!memberSnap.child("deleted").getValue(Boolean.class)) {
                    participantsCount++;
                }
            }
            Double amountPerMember = 1 / (double) participantsCount;
            for (DataSnapshot member : membersSnapshot.getChildren()) {
                // Aggiungo alla spesa solo i membri non eliminati dal gruppo
                if (!member.child("deleted").getValue(Boolean.class)) {
                    newExpense.getParticipants().put(member.getKey(), amountPerMember);
                }
            }
            String timeStamp = new SimpleDateFormat("yyyy.MM.dd.HH.mm.ss").format(new java.util.Date());
            newExpense.setTimestamp(timeStamp);
            if (!IMAGE_CHANGED)
                expensePhoto = null;
            if (!BILL_CHANGED)
                billPhoto = null;
            // Aggiungo una pending expense
            if (callingActivity.equals("ChooseGroupActivity")) {
                newExpense.setGroupName(groupName);
                if (groupImage != null)
                    newExpense.setGroupImage(groupImage);
                FirebaseUtils.getInstance().addPendingExpenseFirebase(newExpense, expensePhoto, getApplicationContext());
                // add event for PENDING_EXPENSE_ADD
                User currentUser = MainActivity.getCurrentUser();
                Event event = new Event(groupID, Event.EventType.PENDING_EXPENSE_ADD, currentUser.getName() + " " + currentUser.getSurname(), newExpense.getDescription(), newExpense.getAmount());
                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);
                Intent myIntent = new Intent(NewExpenseActivity.this, MainActivity.class);
                myIntent.putExtra("UID", MainActivity.getCurrentUID());
                myIntent.putExtra("currentFragment", 2);
                startActivity(myIntent);
            } else // Aggiungo una spesa normale
            {
                FirebaseUtils.getInstance().addExpenseFirebase(newExpense, expensePhoto, billPhoto, getApplicationContext());
                // add event for EXPENSE_ADD
                User currentUser = MainActivity.getCurrentUser();
                Event event = new Event(newExpense.getGroupID(), Event.EventType.EXPENSE_ADD, currentUser.getName() + " " + currentUser.getSurname(), newExpense.getDescription(), newExpense.getAmount());
                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 error) {
            // Failed to read value
            Log.w(TAG, "Failed to read value.", error.toException());
        }
    });
}