Java Code Examples for androidx.recyclerview.widget.RecyclerView#computeVerticalScrollRange()

The following examples show how to use androidx.recyclerview.widget.RecyclerView#computeVerticalScrollRange() . 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: FixedHideBottomViewOnScrollBehavior.java From adamant-android with GNU General Public License v3.0

6 votes

@Override
public void onNestedScroll(CoordinatorLayout coordinatorLayout, V child, View target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed) {
    boolean callSuper = true;
    if (target instanceof RecyclerView) {
        RecyclerView recyclerView = (RecyclerView) target;
        int estimatedHeight = recyclerView.computeVerticalScrollRange();
        int totalSpace = child.getHeight() + target.getHeight();
        if (estimatedHeight <= totalSpace) {
            callSuper = false;
        }
    }
    if (callSuper) {
        super.onNestedScroll(coordinatorLayout, child, target, dxConsumed, dyConsumed,
                dxUnconsumed, dyUnconsumed);
    }
}

Example 2

Source File: OnLoadMoreScrollListener.java From NewFastFrame with Apache License 2.0

6 votes

@Override
public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
    RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
    int result = 1;
    if (recyclerView instanceof SuperRecyclerView) {
        SuperRecyclerView superRecyclerView = (SuperRecyclerView) recyclerView;
        result += superRecyclerView.getHeaderContainer().getChildCount();
    }
    int visibleItemCount = layoutManager.getChildCount();
    boolean flag = recyclerView.computeVerticalScrollExtent() + recyclerView.computeVerticalScrollOffset() >= recyclerView.computeVerticalScrollRange();
    boolean triggerCondition = visibleItemCount > result
            && newState == RecyclerView.SCROLL_STATE_IDLE
            && canTriggerLoadMore(recyclerView) && flag;
    if (triggerCondition) {
        onLoadMore(recyclerView);
    }
}

Example 3

Source File: ScrollController.java From litho with Apache License 2.0

6 votes

@Override
public void onScrolled(RecyclerView rv, int dx, int dy) {
  final int scrollRange = rv.computeVerticalScrollRange();
  final int scrollExtent = rv.computeVerticalScrollExtent();

  scrollOffsetRange = scrollRange - scrollExtent;
  handleOffsetRange =
      scrollExtent - dpToPixel(rv.getContext(), 2 * HANDLE_VERTICAL_MARGIN + HANDLE_SIZE_DP);

  scrollOffset = rv.computeVerticalScrollOffset();

  if (userControlling) {
    return;
  }

  final float scale = ((float) scrollOffset) / scrollOffsetRange;
  handleOffset = (int) (handleOffsetRange * scale);
  handleOffsetDV.set((float) handleOffset);
}

Example 4

Source File: FastScroll.java From RecyclerExt with Apache License 2.0

6 votes

@Override
public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
    int verticalRange = recyclerView.computeVerticalScrollRange();

    //Makes sure the FastScroll is correctly hidden on shorter lists
    if (hideOnShortLists && (verticalRange < calculatedMinDisplayHeight || calculatedMinDisplayHeight == 0)) {
        updateHandleVisibility(false);
        return;
    }

    //Makes sure the handle is shown when scrolling
    updateHandleVisibility(true);
    delayHandler.removeCallbacks(handleHideRunnable);

    if (handle.isSelected()) {
        return;
    }

    hideHandleDelayed();

    float ratio = (float)recyclerView.computeVerticalScrollOffset() / (float) (verticalRange - recyclerView.computeVerticalScrollExtent());
    float halfHandleHeight = (handle.getHeight() / 2);
    setBubbleAndHandlePosition((height - handle.getHeight()) * ratio + halfHandleHeight);
}

Example 5

Source File: RecyclerViewFastScroller.java From mollyim-android with GNU General Public License v3.0

5 votes

@Override
public void onScrolled(@NonNull final RecyclerView recyclerView, final int dx, final int dy) {
  if (handle.isSelected()) return;
  final int   offset      = recyclerView.computeVerticalScrollOffset();
  final int   range       = recyclerView.computeVerticalScrollRange();
  final int   extent      = recyclerView.computeVerticalScrollExtent();
  final int   offsetRange = Math.max(range - extent, 1);
  setBubbleAndHandlePosition((float) Util.clamp(offset, 0, offsetRange) / offsetRange);
}

Example 6

Source File: FastScroller.java From a with GNU General Public License v3.0

5 votes

private float getScrollProportion(RecyclerView recyclerView) {
    if (recyclerView == null) {
        return 0;
    }
    final int verticalScrollOffset = recyclerView.computeVerticalScrollOffset();
    final int verticalScrollRange = recyclerView.computeVerticalScrollRange();
    final float rangeDiff = verticalScrollRange - mViewHeight;
    float proportion = (float) verticalScrollOffset / (rangeDiff > 0 ? rangeDiff : 1f);
    return mViewHeight * proportion;
}

Example 7

Source File: FastScroller.java From call_manage with MIT License

5 votes

public void updateContainerAndScrollBarPosition(RecyclerView recyclerView) {
    if (!scrollBar.isSelected()) {
        int verticalScrollOffset = recyclerView.computeVerticalScrollOffset();
        int verticalScrollRange = recyclerView.computeVerticalScrollRange();
        float proportion = (float) verticalScrollOffset / ((float) verticalScrollRange - getHeight());
        setContainerAndScrollBarPosition(getHeight() * proportion);
    }
}

Example 8

Source File: FastScroller.java From MyBookshelf with GNU General Public License v3.0

5 votes

private float getScrollProportion(RecyclerView recyclerView) {
    if (recyclerView == null) {
        return 0;
    }
    final int verticalScrollOffset = recyclerView.computeVerticalScrollOffset();
    final int verticalScrollRange = recyclerView.computeVerticalScrollRange();
    final float rangeDiff = verticalScrollRange - mViewHeight;
    float proportion = (float) verticalScrollOffset / (rangeDiff > 0 ? rangeDiff : 1f);
    return mViewHeight * proportion;
}

Example 9

Source File: Pix.java From PixImagePicker with Apache License 2.0

5 votes

@Override
public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
    super.onScrollStateChanged(recyclerView, newState);

    if (recyclerView.isEnabled()) {
        switch (newState) {
            case RecyclerView.SCROLL_STATE_DRAGGING:
                handler.removeCallbacks(mScrollbarHider);
                if (mScrollbar.getVisibility() != View.VISIBLE) {
                    Utility.cancelAnimation(mScrollbarAnimator);
                    if (!Utility.isViewVisible(mScrollbar) && (recyclerView.computeVerticalScrollRange()
                            - mViewHeight > 0)) {

                        mScrollbarAnimator = Utility.showScrollbar(mScrollbar, Pix.this);
                    }
                }
                break;
            case RecyclerView.SCROLL_STATE_IDLE:
                if (mHideScrollbar && !mHandleView.isSelected()) {
                    handler.postDelayed(mScrollbarHider, sScrollbarHideDelay);
                }
                break;
            default:
                break;
        }
    }
}

Example 10

Source File: Pix.java From PixImagePicker with Apache License 2.0

5 votes

private float getScrollProportion(RecyclerView recyclerView) {
    final int verticalScrollOffset = recyclerView.computeVerticalScrollOffset();
    final int verticalScrollRange = recyclerView.computeVerticalScrollRange();
    final float rangeDiff = verticalScrollRange - mViewHeight;
    float proportion = (float) verticalScrollOffset / (rangeDiff > 0 ? rangeDiff : 1f);
    return mViewHeight * proportion;
}

Example 11

Source File: FastScroller.java From HaoReader with GNU General Public License v3.0

5 votes

private float getScrollProportion(RecyclerView recyclerView) {
    if (recyclerView == null) {
        return 0;
    }

    final int verticalScrollOffset = recyclerView.computeVerticalScrollOffset();
    final int verticalScrollRange = recyclerView.computeVerticalScrollRange();
    final float rangeDiff = verticalScrollRange - viewHeight;
    float proportion = (float) verticalScrollOffset / (rangeDiff > 0 ? rangeDiff : 1f);
    return viewHeight * proportion;
}

Example 12

Source File: RecyclerViewFastScroller.java From deltachat-android with GNU General Public License v3.0

5 votes

@Override
public void onScrolled(final RecyclerView recyclerView, final int dx, final int dy) {
  if (handle.isSelected()) return;
  final int   offset      = recyclerView.computeVerticalScrollOffset();
  final int   range       = recyclerView.computeVerticalScrollRange();
  final int   extent      = recyclerView.computeVerticalScrollExtent();
  final int   offsetRange = Math.max(range - extent, 1);
  setBubbleAndHandlePosition((float) Util.clamp(offset, 0, offsetRange) / offsetRange);
}

Example 13

Source File: BothDirectionsScrollLayoutManager.java From ProjectX with Apache License 2.0

5 votes

/**
 * 计算垂直滚动范围
 *
 * @return 滚动范围
 */
protected int computeVerticalScrollRange() {
    if (getOrientation() == RecyclerView.VERTICAL) {
        final RecyclerView view = getRecyclerView();
        return view == null ? 0 : view.computeVerticalScrollRange();
    }
    return getChildMaxHeight(mChildMaxHeight) + mTopDecorationMaxWidthOfChildMaxHeight +
            mBottomDecorationMaxWidthOfChildMaxHeight;
}

Example 14

Source File: InfiniteScrollListener.java From HaoReader with GNU General Public License v3.0

4 votes

private static boolean isSlideToBottom(RecyclerView recyclerView) {
    return recyclerView.computeVerticalScrollExtent() + recyclerView.computeVerticalScrollOffset()
            >= recyclerView.computeVerticalScrollRange();
}