Java Code Examples for androidx.recyclerview.widget.LinearLayoutManager#setReverseLayout()

private void setUpRecyclerView() {
    mLayoutManager = new LinearLayoutManager(getActivity());
    mLayoutManager.setReverseLayout(true);
    mRecyclerView.setLayoutManager(mLayoutManager);
    mRecyclerView.setAdapter(mChatAdapter);
    mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
        @Override
        public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
            if (newState == RecyclerView.SCROLL_STATE_IDLE) {
                if (mLayoutManager.findFirstVisibleItemPosition() == 0) {
                    mMessageCollection.fetchSucceededMessages(MessageCollection.Direction.NEXT, null);
                    mNewMessageText.setVisibility(View.GONE);
                }

                if (mLayoutManager.findLastVisibleItemPosition() == mChatAdapter.getItemCount() - 1) {
                    mMessageCollection.fetchSucceededMessages(MessageCollection.Direction.PREVIOUS, null);
                }

            }
        }
    });
}
 

private void setUpRecyclerView() {
    mLayoutManager = new LinearLayoutManager(getActivity());
    mLayoutManager.setReverseLayout(true);
    mRecyclerView.setLayoutManager(mLayoutManager);
    mRecyclerView.setAdapter(mChatAdapter);

    // Load more messages when user reaches the top of the current message list.
    mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
        @Override
        public void onScrollStateChanged(RecyclerView recyclerView, int newState) {

            if (mLayoutManager.findLastVisibleItemPosition() == mChatAdapter.getItemCount() - 1) {
                loadNextMessageList(CHANNEL_LIST_LIMIT);
            }
            Log.v(LOG_TAG, "onScrollStateChanged");
        }
    });
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    if (UserPreferences.getBoolean("dark_mode", false)) {
        setTheme(R.style.SettingsThemeDark);
    }
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_file_picker);
    recyclerView = findViewById(R.id.recycler_view);
    mToolbar = findViewById(R.id.toolbar);
    setSupportActionBar(mToolbar);
    if (getSupportActionBar() != null) {
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setDisplayShowHomeEnabled(true);
    }
    LinearLayoutManager mLayoutManager = new LinearLayoutManager(this);
    mLayoutManager.setReverseLayout(true);
    mLayoutManager.setStackFromEnd(true);
    recyclerView.setLayoutManager(mLayoutManager);
    recyclerViewAdapter = new AdapterDownloads(FilePickerActivity.this, getUserDownloads());
    recyclerView.setAdapter(recyclerViewAdapter);
    recyclerViewAdapter.notifyDataSetChanged();
}
 

private void bindView() {
    mAdapter = new PrivateMessagesDetailRecyclerViewAdapter(this, privateMessage, mCustomThemeWrapper);
    mLinearLayoutManager = new LinearLayoutManager(this);
    mLinearLayoutManager.setReverseLayout(true);
    mLinearLayoutManager.setStackFromEnd(true);
    mRecyclerView.setLayoutManager(mLinearLayoutManager);
    mRecyclerView.setAdapter(mAdapter);
}
 

private void setUpRecyclerView() {
    mLayoutManager = new LinearLayoutManager(getActivity());
    mLayoutManager.setReverseLayout(true);
    mRecyclerView.setLayoutManager(mLayoutManager);
    mRecyclerView.setAdapter(mChatAdapter);
    mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
        @Override
        public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
            if (mLayoutManager.findLastVisibleItemPosition() == mChatAdapter.getItemCount() - 1) {
                mChatAdapter.loadPreviousMessages(CHANNEL_LIST_LIMIT, null);
            }
        }
    });
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    if(UserPreferences.getBoolean("dark_mode", false)){
        setTheme(R.style.BookMarksThemeDark);
    }
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_history);
    preferences = PreferenceManager.getDefaultSharedPreferences(this);
    mToolbar = findViewById(R.id.toolbar);
    setSupportActionBar(mToolbar);

    if (getSupportActionBar() != null) {
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setDisplayShowHomeEnabled(true);
    }
    listHistory = UserPreferences.getHistory();
    recyclerBookmarks = findViewById(R.id.recycler_history);
    LinearLayoutManager mLayoutManager = new LinearLayoutManager(this);
    mLayoutManager.setReverseLayout(true);
    mLayoutManager.setStackFromEnd(true);
    recyclerBookmarks.setLayoutManager(mLayoutManager);
    adapterBookmarks = new AdapterHistory(this, listHistory, this);
    recyclerBookmarks.setAdapter(adapterBookmarks);
    //show long click hint
    if (preferences.getBoolean("first_history", true) && !listHistory.isEmpty()) {
        Cardbar.snackBar(getApplicationContext(), "Long click to copy link", true).show();

        preferences.edit().putBoolean("first_history", false).apply();
    }


}
 

private void initRecyclerView() {
    mRecycler = this.findViewById(R.id.message_recycler);

    LinearLayoutManager mLayoutManager = new LinearLayoutManager(getBaseContext());
    mLayoutManager.setReverseLayout(true);
    mRecycler.setHasFixedSize(true);
    mRecyclerAdapter = new MessageAdapter(this, this);

    if (imgSRC == 0) {
        imgSRC = R.drawable.lorem;
        mRecyclerAdapter.addItem(new Message(MessageType.Action, "The Amazing Group was created", "", R.drawable.user));
        mRecyclerAdapter.addItem(new Message(MessageType.Received, "Awesome stuff!", "14:29 Received", R.drawable.john));
    }

    mRecyclerAdapter.addItem(new Message(MessageType.Delivered, "Welcome to TokTok " + title + ", I hope you love it, as much as I do \uD83D\uDE00", "14:30 Delivered", R.drawable.user));
    mRecyclerAdapter.addItem(new Message(MessageType.Received, "Thanks André Almeida, let's hope soo.", "14:31 Received", imgSRC));
    mRecyclerAdapter.addItem(new Message(MessageType.Action, "Smiled", "", imgSRC));
    mRecyclerAdapter.addItem(new Message(MessageType.Received, "Yooo!", "14:32 Received", imgSRC));

    mRecycler.setAdapter(mRecyclerAdapter);
    mRecycler.setLayoutManager(mLayoutManager);

    mRecycler.setItemAnimator(new MessageItemAnimator());

    ImageButton attachButton = this.findViewById(R.id.message_attachments_button);

    attachButton.setOnClickListener(v -> {
        InputMethodManager imm = (InputMethodManager) MessageActivity.this.getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.hideSoftInputFromWindow(mInput.getApplicationWindowToken(), 0);

        overlayAttachments.start();
    });
}
 

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_chat);
    ButterKnife.bind(this);

    LinearLayoutManager manager = new LinearLayoutManager(this);
    manager.setReverseLayout(true);
    manager.setStackFromEnd(true);

    mRecyclerView.setHasFixedSize(true);
    mRecyclerView.setLayoutManager(manager);

    mRecyclerView.addOnLayoutChangeListener(new View.OnLayoutChangeListener() {
        @Override
        public void onLayoutChange(View view, int left, int top, int right, int bottom,
                                   int oldLeft, int oldTop, int oldRight, int oldBottom) {
            if (bottom < oldBottom) {
                mRecyclerView.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        mRecyclerView.smoothScrollToPosition(0);
                    }
                }, 100);
            }
        }
    });

    ImeHelper.setImeOnDoneListener(mMessageEdit, new ImeHelper.DonePressedListener() {
        @Override
        public void onDonePressed() {
            onSendClick();
        }
    });
}
 

@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 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);
}
 

public void setUpAsBottomList() {
    setHasFixedSize(true);
    LinearLayoutManager layoutManager = new LinearLayoutManager(getContext());
    layoutManager.setReverseLayout(true);
    setLayoutManager(layoutManager);
}