Java Code Examples for android.support.v7.widget.LinearLayoutManager#scrollToPosition()

The following examples show how to use android.support.v7.widget.LinearLayoutManager#scrollToPosition() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: DialogHolder.java From filter-dialog-activity with Apache License 2.0

6 votes

@SuppressLint("CheckResult")
public DialogHolder(View itemView) {
    super(itemView);

    initUi(itemView);

    LinearLayoutManager layoutManager = new LinearLayoutManager(itemView.getContext());
    layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
    layoutManager.scrollToPosition(0);

    filterRecycler.setLayoutManager(layoutManager);
    filterRecycler.setHasFixedSize(true);
    filterRecycler.setItemAnimator(new DefaultItemAnimator());

    RxTextView.textChanges(searchEdt)
            .observeOn(AndroidSchedulers.mainThread())
            .subscribe(charSequence -> {
                getAdapter().filter(charSequence.toString());
            });
}

Example 2

Source File: RecyclerViewScrollActivity.java From AndroidDemo with MIT License

6 votes

private void moveToPosition(int position) {
    if (position > data.size())
        return;
    LinearLayoutManager layoutManager = (LinearLayoutManager) recyclerView.getLayoutManager();
    int first = layoutManager.findFirstVisibleItemPosition();
    int end = layoutManager.findLastVisibleItemPosition();
    if (first == -1 || end == -1)
        return;
    if (position <= first) {
        layoutManager.scrollToPosition(position);
    } else if (position >= end) {
        isMove = true;
        scrollPosition = position;
        layoutManager.smoothScrollToPosition(recyclerView, null, position);
    } else {//中间部分
        int n = position - layoutManager.findFirstVisibleItemPosition();
        if (n > 0 && n < data.size()) {
            int top = layoutManager.findViewByPosition(position).getTop();
            recyclerView.scrollBy(0, top);
        }
    }
}

Example 3

Source File: CommentAdapter.java From Hews with MIT License

6 votes

public void collapseChildrenComment(int position) {
    ArrayList<Comment> childrenComments = new ArrayList<>();
    Comment parentComment = (Comment) mItemList.get(position);
    LinearLayoutManager linearLayoutManager = (LinearLayoutManager) mRecyclerView.getLayoutManager();
    // if a comment header is not visible when collapsing, scroll to it's header
    if (position != linearLayoutManager.findFirstCompletelyVisibleItemPosition()) {
        linearLayoutManager.scrollToPosition(position);
    }

    for (int curPosition = position + 1;
         (mItemList.get(curPosition) instanceof Comment
             && ((Comment) mItemList.get(curPosition)).getLevel() > parentComment.getLevel());
         curPosition++) {
        childrenComments.add((Comment) mItemList.get(curPosition));
    }

    if (!childrenComments.isEmpty()) {
        mCollapsedChildrenCommentsIndex.put(parentComment.getCommentId(), childrenComments);
        for (Comment comment : childrenComments) {
            mItemList.remove(comment);
        }
        notifyItemChanged(position);
        notifyItemRangeRemoved(position + 1, childrenComments.size());
    }
}

Example 4

Source File: MainActivity.java From AndroidPhotoFilters with Apache License 2.0

5 votes

private void initHorizontalList() {
    LinearLayoutManager layoutManager = new LinearLayoutManager(this);
    layoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);
    layoutManager.scrollToPosition(0);
    thumbListView.setLayoutManager(layoutManager);
    thumbListView.setHasFixedSize(true);
    bindDataToAdapter();
}

Example 5

Source File: MainActivity.java From AndroidPhotoFilters with Apache License 2.0

5 votes

private void initHorizontalList() {
    LinearLayoutManager layoutManager = new LinearLayoutManager(this);
    layoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);
    layoutManager.scrollToPosition(0);
    thumbListView.setLayoutManager(layoutManager);
    thumbListView.setHasFixedSize(true);
    bindDataToAdapter();
}

Example 6

Source File: BlogTransitionActivity.java From Material-Animation-Samples with Apache License 2.0

4 votes

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_blog_transition);

    initViews();

    // Setup layout manager for mBlogList and column count
    final LinearLayoutManager layoutManager = new LinearLayoutManager(this);

    // Control orientation of the mBlogList
    layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
    layoutManager.scrollToPosition(0);
    // Attach layout manager
    mRecyclerView.setLayoutManager(layoutManager);

    // Bind adapter to recycler
    mBlogList = new ArrayList<>();


    // Some of colors
    int[] color = {0xFFC2185B, 0xFFB3E5FC, 0xFFFFEB3B, 0xFFF8BBD0, 0xFFFF5252,
            0xFFE91E63, 0xFF448AFF, 0xFF00796B, 0xFFE91E63, 0xFFFF5252, 0xFFF8BBD0, 0xFF0288D1,};
    // Some of images
    int[] drawable = {R.drawable.apple_46, R.drawable.apple_style, R.drawable.steve_jobs,
            R.drawable.apple_46, R.drawable.apple_style, R.drawable.steve_jobs, R.drawable.apple_46,
            R.drawable.apple_style, R.drawable.steve_jobs, R.drawable.apple_46, R.drawable.apple_style,
            R.drawable.steve_jobs};

    //
    for (int i = 0; i < color.length; i++) {
        Blog blog = new Blog();
        blog.setImageRes(drawable[i]);
        blog.setBackGroundColor(color[i]);
        blog.setTitle("Label " + i);
        blog.setSubTitle("This is subTitle with number " + i + " and some description here");
        mBlogList.add(blog);
    }

    // Setting adapter
    final BlogRecyclerAdapter adapter = new BlogRecyclerAdapter(mBlogList);
    mRecyclerView.setAdapter(adapter);

    // Listen to the item touching
    mRecyclerView
            .addOnItemTouchListener(new RecyclerItemClickListener(
                    this,
                    new RecyclerItemClickListener.OnItemClickListener() {
                        @Override
                        public void onItemClick(View itemView, int position) {
                            if (!isOpen) {
                                BlogTransitionActivity.this.position = position;
                                openBlogInDetails(itemView);
                            }

                        }
                    }));
}

Example 7

Source File: RecyclerViewSample.java From UltimateAndroid with Apache License 2.0

4 votes

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.recycler_view_sample);
        mRecyclerView = (RecyclerView) findViewById(R.id.recycler_view);

        // use this setting to improve performance if you know that changes
        // in content do not change the layout size of the RecyclerView
        mRecyclerView.setHasFixedSize(true);

        // use a linear layout manager
        mLayoutManager = new LinearLayoutManager(this);
        mRecyclerView.setLayoutManager(mLayoutManager);

        // specify an adapter (see also next example)
        String[] mDataset = new String[4];
        for (int i = 0; i < 4; i++) {
            mDataset[i] = i + "hh";
        }
        mAdapter = new MyAdapter(mDataset);
        mRecyclerView.setAdapter(mAdapter);
        LinearLayoutManager layoutManager = new LinearLayoutManager(this);

        layoutManager.setOrientation(LinearLayoutManager.VERTICAL);

        layoutManager.scrollToPosition(0);

        mRecyclerView.setLayoutManager(layoutManager);
//        RecyclerView.ItemDecoration itemDecoration =
//        new DividerItemDecoration(this, DividerItemDecoration.VERTICAL_LIST);
//        mRecyclerView.addItemDecoration(itemDecoration);

// this is the default;
// this call is actually only necessary with custom ItemAnimators
        mRecyclerView.setItemAnimator(new DefaultItemAnimator());

// onClickDetection is done in this Activity's OnItemTouchListener
// with the help of a GestureDetector;
// Tip by Ian Lake on G+ in a comment to this post:
// https://plus.google.com/+LucasRocha/posts/37U8GWtYxDE
//        mRecyclerView.addOnItemTouchListener(this);
//        gesturedetector =
//        new GestureDetectorCompat(this, new RecyclerViewDemoOnGestureListener());



    }

Example 8

Source File: RecyclerViewSample.java From UltimateAndroid with Apache License 2.0

4 votes

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.recycler_view_sample);
        mRecyclerView = (RecyclerView) findViewById(R.id.recycler_view);

        // use this setting to improve performance if you know that changes
        // in content do not change the layout size of the RecyclerView
        mRecyclerView.setHasFixedSize(true);

        // use a linear layout manager
        mLayoutManager = new LinearLayoutManager(this);
        mRecyclerView.setLayoutManager(mLayoutManager);

        // specify an adapter (see also next example)
        String[] mDataset = new String[4];
        for (int i = 0; i < 4; i++) {
            mDataset[i] = i + "hh";
        }
        mAdapter = new MyAdapter(mDataset);
        mRecyclerView.setAdapter(mAdapter);
        LinearLayoutManager layoutManager = new LinearLayoutManager(this);

        layoutManager.setOrientation(LinearLayoutManager.VERTICAL);

        layoutManager.scrollToPosition(0);

        mRecyclerView.setLayoutManager(layoutManager);
//        RecyclerView.ItemDecoration itemDecoration =
//        new DividerItemDecoration(this, DividerItemDecoration.VERTICAL_LIST);
//        mRecyclerView.addItemDecoration(itemDecoration);

// this is the default;
// this call is actually only necessary with custom ItemAnimators
        mRecyclerView.setItemAnimator(new DefaultItemAnimator());

// onClickDetection is done in this Activity's OnItemTouchListener
// with the help of a GestureDetector;
// Tip by Ian Lake on G+ in a comment to this post:
// https://plus.google.com/+LucasRocha/posts/37U8GWtYxDE
//        mRecyclerView.addOnItemTouchListener(this);
//        gesturedetector =
//        new GestureDetectorCompat(this, new RecyclerViewDemoOnGestureListener());



    }