androidx.recyclerview.widget.PagerSnapHelper#attachToRecyclerView

Source File: PagerSnapActivity.java From DevUtils with Apache License 2.0

6 votes

@Override
    public void initValues() {
        super.initValues();


        List<ItemBean> lists = new ArrayList<>();
        for (int i = 0; i < 10; i++) {
            lists.add(ItemBean.newItemBeanPager());
        }

        // 初始化布局管理器、适配器
        pagerSnapAdapter = new PagerSnapAdapter(lists);
        vid_bvr_recy.setLayoutManager(new LinearLayoutManager(this, RecyclerView.HORIZONTAL, false));
//        vid_bvr_recy.setLayoutManager(new LinearLayoutManager(this, RecyclerView.VERTICAL, false));
        vid_bvr_recy.setAdapter(pagerSnapAdapter);

        PagerSnapHelper helper = new PagerSnapHelper();
        helper.attachToRecyclerView(vid_bvr_recy);
    }

Source File: PagerSnapMAXActivity.java From DevUtils with Apache License 2.0

6 votes

@Override
    public void initValues() {
        super.initValues();


        List<ItemBean> lists = new ArrayList<>();
        for (int i = 0; i < 10; i++) {
            lists.add(ItemBean.newItemBeanPager());
        }

        // 初始化布局管理器、适配器
        pagerSnapAdapter = new PagerSnapMAXAdapter(this, lists);
        vid_bvr_recy.setLayoutManager(new LinearLayoutManager(this, RecyclerView.HORIZONTAL, false));
//        vid_bvr_recy.setLayoutManager(new LinearLayoutManager(this, RecyclerView.VERTICAL, false));
        vid_bvr_recy.setAdapter(pagerSnapAdapter);

        PagerSnapHelper helper = new PagerSnapHelper();
        helper.attachToRecyclerView(vid_bvr_recy);


        int size = lists.size();
        // 滑动到中间 ( 无滑动过程 )
        ((LinearLayoutManager) vid_bvr_recy.getLayoutManager()).scrollToPositionWithOffset(size * 100 - 1, 10);
        // 复位到中间
        ListViewUtils.smoothScrollToPosition(vid_bvr_recy, size * 100 + 1);
    }

Source File: NotePreviewActivity.java From CrazyDaily with Apache License 2.0

5 votes

@Override
protected void initView() {
    mDelete.setColorFilter(Color.WHITE);
    mPagerSnapHelper = new PagerSnapHelper();
    mImageList.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false));
    // 重置
    mImageList.setOnFlingListener(null);
    mPagerSnapHelper.attachToRecyclerView(mImageList);
    mImageList.addOnScrollListener(new RecyclerView.OnScrollListener() {
        @Override
        public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) {
            scrollImage(getCurrentPosition(recyclerView));
        }
    });
}

Source File: RecyclerViewFragment.java From CircleIndicator with Apache License 2.0

5 votes

@Override public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
    mAdapter = new SampleRecyclerAdapter(5);

    RecyclerView recyclerView = view.findViewById(R.id.recycler_view);

    LinearLayoutManager layoutManager =
            new LinearLayoutManager(getContext(), LinearLayoutManager.HORIZONTAL, false);
    recyclerView.setLayoutManager(layoutManager);
    recyclerView.setAdapter(mAdapter);

    PagerSnapHelper pagerSnapHelper = new PagerSnapHelper();
    pagerSnapHelper.attachToRecyclerView(recyclerView);

    // CircleIndicator2 for RecyclerView
    CircleIndicator2 indicator = view.findViewById(R.id.indicator);
    indicator.attachToRecyclerView(recyclerView, pagerSnapHelper);

    // Scroll To Position
    layoutManager.scrollToPosition(2);

    // Observe Data Change
    mAdapter.registerAdapterDataObserver(indicator.getAdapterDataObserver());
    view.findViewById(R.id.add).setOnClickListener(new View.OnClickListener() {
        @Override public void onClick(View v) {
            mAdapter.add();
        }
    });
    view.findViewById(R.id.remove).setOnClickListener(v -> {
        mAdapter.remove();
    });
}

Source File: PreviewActivity.java From EasyPhotos with Apache License 2.0

4 votes

private void initRecyclerView() {
    rvPhotos = findViewById(R.id.rv_photos);
    adapter = new PreviewPhotosAdapter(this, photos, this);
    lm = new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false);
    rvPhotos.setLayoutManager(lm);
    rvPhotos.setAdapter(adapter);
    rvPhotos.scrollToPosition(index);
    toggleSelector();
    snapHelper = new PagerSnapHelper();
    snapHelper.attachToRecyclerView(rvPhotos);
    rvPhotos.addOnScrollListener(new RecyclerView.OnScrollListener() {
        @Override
        public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) {
            super.onScrollStateChanged(recyclerView, newState);

            View view = snapHelper.findSnapView(lm);
            if (view == null) {
                return;
            }
            int position = lm.getPosition(view);
            if (lastPosition == position) {
                return;
            }
            lastPosition = position;
            previewFragment.setSelectedPosition(-1);
            tvNumber.setText(getString(R.string.preview_current_number_easy_photos, lastPosition + 1, photos.size()));
            toggleSelector();
            PreviewPhotosAdapter.PreviewPhotosViewHolder holder = (PreviewPhotosAdapter.PreviewPhotosViewHolder) rvPhotos.getChildViewHolder(view);
            if (holder == null) {
                return;
            }
            if (holder.ivPhoto != null && holder.ivPhoto.getScale() != 1f) {
                holder.ivPhoto.setScale(1f, true);
            }
            if (holder.ivBigPhoto != null && holder.ivBigPhoto.getScale() != 1f) {
                holder.ivBigPhoto.resetScaleAndCenter();
            }
        }
    });
    tvNumber.setText(getString(R.string.preview_current_number_easy_photos, index + 1,
            photos.size()));
}

Source File: NoteAdapter.java From CrazyDaily with Apache License 2.0

4 votes

@Override
protected void convert(@NonNull BaseViewHolder holder, @NonNull NoteEntity item) {
    TextView date = holder.getTextView(R.id.item_note_date);
    ImageView menu = holder.getImageView(R.id.item_note_menu);

    TextView content = holder.getTextView(R.id.item_note_content);
    date.setText(DateUtil.formatDate(item.getId(), DateUtil.PATTERN_ONE));
    menu.setColorFilter(Color.parseColor("#333333"));
    content.setText(item.getText());
    String videoUrl = item.getVideoUrl();
    ViewGroup typeVideo = holder.getView(R.id.item_note_type_video);
    ViewGroup typeImage = holder.getView(R.id.item_note_type_image);
    if (videoUrl == null) {
        typeVideo.setVisibility(View.GONE);
        typeImage.setVisibility(View.VISIBLE);
        RecyclerView images = holder.getView(R.id.item_note_images, RecyclerView.class);
        TextView indicator = holder.getTextView(R.id.item_note_images_indicator);
        GradientDrawable drawable = new GradientDrawable();
        drawable.setCornerRadius(ScreenUtil.dp2px(mContext, 15));
        drawable.setColor(Color.parseColor("#7FB2B2B2"));
        indicator.setBackground(drawable);
        // 图片显示
        PagerSnapHelper pagerSnapHelper = new PagerSnapHelper();
        images.setLayoutManager(new LinearLayoutManager(mContext, LinearLayoutManager.HORIZONTAL, false));
        images.setAdapter(new ImageAdapter(item.getImages()));
        // 重置
        images.setOnFlingListener(null);
        pagerSnapHelper.attachToRecyclerView(images);
        images.addOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) {
                RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
                //noinspection ConstantConditions
                final int i = layoutManager.getPosition(pagerSnapHelper.findSnapView(layoutManager));
                scrollImage(i, holder);
            }
        });
        scrollImage(0, holder);
    } else {
        typeVideo.setVisibility(View.VISIBLE);
        typeImage.setVisibility(View.GONE);
        ImageView thumbnail = holder.getView(R.id.item_note_video_thumbnail);
        ImageLoader.load(mContext, videoUrl, thumbnail);
        thumbnail.setOnClickListener(v -> {
            ViewGroup parent = (ViewGroup) mVideoPlayer.getParent();
            if (parent != null) {
                parent.removeView(mVideoPlayer);
                resetRecycler();
            }
            NeihanVideoPlayerController controller = new NeihanVideoPlayerController(mContext);
            controller.setTitle("");
            mVideoPlayer.setUp(videoUrl, null);
            mVideoPlayer.setController(controller);
            mVideoPlayer.start();
            typeVideo.addView(mVideoPlayer);
        });
    }
    menu.setOnClickListener(v -> {
        if (mOnMenuClickListener != null) {
            mOnMenuClickListener.onClick(mData.get(holder.getLayoutPosition()));
        }
    });
}

Java Code Examples for androidx.recyclerview.widget.PagerSnapHelper#attachToRecyclerView()