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

Example 11 with Query

use of com.google.firebase.database.Query 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);
    mAdapter = new FirebaseRecyclerAdapter<Post, PostViewHolder>(Post.class, R.layout.item_post, PostViewHolder.class, postsQuery) {

        @Override
        protected void populateViewHolder(final PostViewHolder viewHolder, final Post model, final int position) {
            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 PostDetailActivity
                    Intent intent = new Intent(getActivity(), PostDetailActivity.class);
                    intent.putExtra(PostDetailActivity.EXTRA_POST_KEY, postKey);
                    startActivity(intent);
                }
            });
            // 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 12 with Query

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

the class MyTopPostsFragment method getQuery.

@Override
public Query getQuery(DatabaseReference databaseReference) {
    // [START my_top_posts_query]
    // My top posts by number of stars
    String myUserId = getUid();
    Query myTopPostsQuery = databaseReference.child("user-posts").child(myUserId).orderByChild("starCount");
    return myTopPostsQuery;
}

Example 13 with Query

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

the class FirebaseIndexArray method cleanup.

@Override
public void cleanup() {
    super.cleanup();
    Set<Query> refs = new HashSet<>(mRefs.keySet());
    for (Query ref : refs) {
        ref.removeEventListener(mRefs.remove(ref));
    }
}

Example 14 with Query

use of com.google.firebase.database.Query in project priend by TakoJ.

the class MyTopPostsFragment method getQuery.

@Override
public Query getQuery(DatabaseReference databaseReference) {
    // [START my_top_posts_query]
    // My top posts by number of stars
    String myUserId = getUid();
    Query myTopPostsQuery = databaseReference.child("user-posts").child(myUserId).orderByChild("starCount");
    return myTopPostsQuery;
}

Example 15 with Query

use of com.google.firebase.database.Query 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;
}