androidx.recyclerview.widget.LinearSnapHelper Java Examples

@Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View root = inflater.inflate(R.layout.fragment_favorite, container, false);
        mRecyclerView = root.findViewById(R.id.fav_recycler_view);
        mRecyclerView.setHasFixedSize(true);
        mRecyclerView.setItemAnimator(new DefaultItemAnimator());
        mRecyclerView.setLayoutManager(new LinearLayoutManager(AppMain.getContext(), LinearLayoutManager.VERTICAL, false));
        SnapHelper snapHelper = new LinearSnapHelper();
        snapHelper.attachToRecyclerView(mRecyclerView);
        mRecyclerView.setAdapter(mAdapter);

        swipeRefreshLayout = (SwipeRefreshLayout) root.findViewById(R.id.fav_swiper);
        swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                presenter.loadWords(false);
            }
        });
//        animation = AnimationUtils.loadAnimation(AppMain.getContext(), R.anim.card_in);

        return root;
    }
 

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

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

        // 初始化布局管理器、适配器
        linearSnapAdapter = new LinearSnapMAXAdapter(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(linearSnapAdapter);

        LinearSnapHelper helper = new LinearSnapHelper();
        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);
    }
 

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

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

        // 初始化布局管理器、适配器
        linearSnapAdapter = new LinearSnapAdapter(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(linearSnapAdapter);

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

@Nullable
public static SnapHelper getSnapHelper(
    @SnapMode int snapMode, int deltaJumpThreshold, int startSnapFlingOffset) {
  switch (snapMode) {
    case SNAP_TO_CENTER:
      return new PagerSnapHelper();
    case SNAP_TO_START:
      return new StartSnapHelper(startSnapFlingOffset);
    case SNAP_TO_CENTER_CHILD:
      return new LinearSnapHelper();
    case SNAP_TO_CENTER_CHILD_WITH_CUSTOM_SPEED:
      return new CustomSpeedLinearSnapHelper(deltaJumpThreshold);
    case SNAP_TO_END:
    case SNAP_NONE:
    default:
      return null;
  }
}
 

public void setCarouselOffset(OffsetType offsetType) {
  this.offsetType = offsetType;
  switch (offsetType) {
    case CENTER:
      this.snapHelper = new LinearSnapHelper();
      break;
    case START:
      this.snapHelper = new CarouselSnapHelper();
      break;
  }
}
 

private PickerLayoutManager(Context context, int orientation, boolean reverseLayout, int maxItem, float scale, boolean alpha) {
    super(context, orientation, reverseLayout);
    mLinearSnapHelper = new LinearSnapHelper();
    mMaxItem = maxItem;
    mOrientation = orientation;
    mAlpha = alpha;
    mScale = scale;
}
 

@Test
public void testOverrideGlobalSnapHelper() {
  Carousel.setDefaultGlobalSnapHelperFactory(new SnapHelperFactory() {
    @NonNull
    @Override
    public SnapHelper buildSnapHelper(Context context) {
      return new LinearSnapHelper();
    }
  });
}
 

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

    mBottomSheet = findViewById(R.id.bt_dropin_bottom_sheet);
    mLoadingViewSwitcher = findViewById(R.id.bt_loading_view_switcher);
    mSupportedPaymentMethodsHeader = findViewById(R.id.bt_supported_payment_methods_header);
    mSupportedPaymentMethodListView = findViewById(R.id.bt_supported_payment_methods);
    mVaultedPaymentMethodsContainer = findViewById(R.id.bt_vaulted_payment_methods_wrapper);
    mVaultedPaymentMethodsView = findViewById(R.id.bt_vaulted_payment_methods);
    mVaultManagerButton = findViewById(R.id.bt_vault_edit_button);
    mVaultedPaymentMethodsView.setLayoutManager(new LinearLayoutManager(this,
            LinearLayoutManager.HORIZONTAL, false));
    new LinearSnapHelper().attachToRecyclerView(mVaultedPaymentMethodsView);

    try {
        mBraintreeFragment = getBraintreeFragment();
    } catch (InvalidArgumentException e) {
        finish(e);
        return;
    }

    if (savedInstanceState != null) {
        mSheetSlideUpPerformed = savedInstanceState.getBoolean(EXTRA_SHEET_SLIDE_UP_PERFORMED,
                false);
        mDeviceData = savedInstanceState.getString(EXTRA_DEVICE_DATA);
    }

    slideUp();
}
 

public void decorate(RecyclerView recyclerView) {
    recyclerView.setLayoutManager(layoutManager);
    recyclerView.setAdapter(adapter);
    recyclerView.addOnScrollListener(new CarouselOnScrollListener());

    LinearSnapHelper snapHelper = new LinearSnapHelper();
    snapHelper.attachToRecyclerView(recyclerView);
}
 

public void init(Context context) {
  setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));

  inflate(context, R.layout.day_picker_view, this);

  recyclerView = (RecyclerView) findViewById(android.R.id.list);
  layoutManager = new LinearLayoutManager(context, LinearLayoutManager.HORIZONTAL, false);
  recyclerView.setLayoutManager(layoutManager);
  recyclerView.setAdapter(mAdapter);
  SnapHelper snapHelper = new LinearSnapHelper();
  snapHelper.attachToRecyclerView(recyclerView);
}