androidx.recyclerview.widget.LinearLayoutManager#findLastVisibleItemPosition

Source File: SelectionHandler.java From dhis2-android-capture-app with BSD 3-Clause "New" or "Revised" License

6 votes

public void changeSelectionOfRecyclerView(CellRecyclerView recyclerView, AbstractViewHolder
        .SelectionState selectionState, @ColorInt int backgroundColor) {

    LinearLayoutManager linearLayoutManager = (LinearLayoutManager) recyclerView
            .getLayoutManager();

    for (int i = linearLayoutManager.findFirstVisibleItemPosition(); i < linearLayoutManager
            .findLastVisibleItemPosition() + 1; i++) {

        AbstractViewHolder viewHolder = (AbstractViewHolder) recyclerView
                .findViewHolderForAdapterPosition(i);

        if (viewHolder != null) {
            if (!mTableView.isIgnoreSelectionColors()) {
                // Change background color
                viewHolder.setBackgroundColor(backgroundColor);
            }

            // Change selection status of the view holder
            viewHolder.setSelected(selectionState);
        }
    }
}

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

6 votes

private void manageMessageSeenState() {

        LinearLayoutManager layoutManager = (LinearLayoutManager)list.getLayoutManager();

        int firstPos = layoutManager.findFirstVisibleItemPosition();
        int lastPos = layoutManager.findLastVisibleItemPosition();
        if(firstPos == RecyclerView.NO_POSITION || lastPos == RecyclerView.NO_POSITION) {
            return;
        }

        int[] ids = new int[lastPos - firstPos + 1];
        int index = 0;
        for(int pos = firstPos; pos <= lastPos; pos++) {
            DcMsg message = ((ConversationAdapter) list.getAdapter()).getMsg(pos);
            if (message.getFromId() != DC_CONTACT_ID_SELF && !message.isSeen()) {
                ids[index] = message.getId();
                index++;
            }
        }
        dcContext.markseenMsgs(ids);
    }

Source File: SelectionHandler.java From TableView with MIT License

6 votes

public void changeSelectionOfRecyclerView(CellRecyclerView recyclerView, @NonNull AbstractViewHolder
        .SelectionState selectionState, @ColorInt int backgroundColor) {

    LinearLayoutManager linearLayoutManager = (LinearLayoutManager) recyclerView
            .getLayoutManager();

    for (int i = linearLayoutManager.findFirstVisibleItemPosition(); i < linearLayoutManager
            .findLastVisibleItemPosition() + 1; i++) {

        AbstractViewHolder viewHolder = (AbstractViewHolder) recyclerView
                .findViewHolderForAdapterPosition(i);

        if (viewHolder != null) {
            if (!mTableView.isIgnoreSelectionColors()) {
                // Change background color
                viewHolder.setBackgroundColor(backgroundColor);
            }

            // Change selection status of the view holder
            viewHolder.setSelected(selectionState);
        }
    }
}

Source File: HorizontalRecyclerViewListener.java From TableView with MIT License

6 votes

/**
 * This method calculates the current scroll position and its offset to help new attached
 * recyclerView on window at that position and offset
 *
 * @see #getScrollPosition()
 * @see #getScrollPositionOffset()
 */
private void renewScrollPosition(@NonNull RecyclerView recyclerView) {
    LinearLayoutManager layoutManager = (LinearLayoutManager) recyclerView.getLayoutManager();
    mScrollPosition = layoutManager.findFirstCompletelyVisibleItemPosition();

    // That means there is no completely visible Position.
    if (mScrollPosition == -1) {
        mScrollPosition = layoutManager.findFirstVisibleItemPosition();

        // That means there is just a visible item on the screen
        if (mScrollPosition == layoutManager.findLastVisibleItemPosition()) {
            // in this case we use the position which is the last & first visible item.
        } else {
            // That means there are 2 visible item on the screen. However, second one is not
            // completely visible.
            mScrollPosition = mScrollPosition + 1;
        }
    }

    mScrollPositionOffset = layoutManager.findViewByPosition(mScrollPosition).getLeft();
}

Source File: MessagesActivity.java From android with MIT License

6 votes

@Override
public void onScrolled(RecyclerView view, int dx, int dy) {
    LinearLayoutManager linearLayoutManager = (LinearLayoutManager) view.getLayoutManager();
    if (linearLayoutManager != null) {
        int lastVisibleItem = linearLayoutManager.findLastVisibleItemPosition();
        int totalItemCount = view.getAdapter().getItemCount();

        if (lastVisibleItem > totalItemCount - 15
                && totalItemCount != 0
                && messages.canLoadMore(appId)) {
            if (!isLoadMore) {
                isLoadMore = true;
                new LoadMore().execute(appId);
            }
        }
    }
}

Source File: BookmarksView.java From FirefoxReality with Mozilla Public License 2.0

6 votes

@Override
public void onMore(@NonNull View view, @NonNull Bookmark item) {
    mBinding.bookmarksList.requestFocusFromTouch();

    int rowPosition = mBookmarkAdapter.getItemPosition(item.getGuid());
    RecyclerView.ViewHolder row = mBinding.bookmarksList.findViewHolderForLayoutPosition(rowPosition);
    boolean isLastVisibleItem = false;
    if (mBinding.bookmarksList.getLayoutManager() instanceof LinearLayoutManager) {
        LinearLayoutManager layoutManager = (LinearLayoutManager) mBinding.bookmarksList.getLayoutManager();
        int lastItem = mBookmarkAdapter.getItemCount();
        if ((rowPosition == layoutManager.findLastVisibleItemPosition() || rowPosition == layoutManager.findLastCompletelyVisibleItemPosition() ||
                rowPosition == layoutManager.findLastVisibleItemPosition()-1 || rowPosition == layoutManager.findLastCompletelyVisibleItemPosition()-1)
                && rowPosition != lastItem) {
            isLastVisibleItem = true;
        }
    }

    mBinding.getCallback().onShowContextMenu(
            row.itemView,
            item,
            isLastVisibleItem);
}

Source File: DownloadsView.java From FirefoxReality with Mozilla Public License 2.0

6 votes

@Override
public void onMore(@NonNull View view, @NonNull Download item) {
    mBinding.downloadsList.requestFocusFromTouch();

    int rowPosition = mDownloadsAdapter.getItemPosition(item.getId());
    RecyclerView.ViewHolder row = mBinding.downloadsList.findViewHolderForLayoutPosition(rowPosition);
    boolean isLastVisibleItem = false;
    if (mBinding.downloadsList.getLayoutManager() instanceof LinearLayoutManager) {
        LinearLayoutManager layoutManager = (LinearLayoutManager) mBinding.downloadsList.getLayoutManager();
        int lastItem = mDownloadsAdapter.getItemCount();
        if ((rowPosition == layoutManager.findLastVisibleItemPosition() || rowPosition == layoutManager.findLastCompletelyVisibleItemPosition() ||
                rowPosition == layoutManager.findLastVisibleItemPosition() - 1 || rowPosition == layoutManager.findLastCompletelyVisibleItemPosition() - 1)
                && ((rowPosition == (lastItem - 1)) && rowPosition > 2)) {
            isLastVisibleItem = true;
        }
    }

    if (row != null) {
        mBinding.getCallback().onShowContextMenu(
                row.itemView,
                item,
                isLastVisibleItem);
    }
}

Source File: HistoryView.java From FirefoxReality with Mozilla Public License 2.0

6 votes

@Override
public void onMore(View view, VisitInfo item) {
    mBinding.historyList.requestFocusFromTouch();

    int rowPosition = mHistoryAdapter.getItemPosition(item.getVisitTime());
    RecyclerView.ViewHolder row = mBinding.historyList.findViewHolderForLayoutPosition(rowPosition);
    boolean isLastVisibleItem = false;
    if (mBinding.historyList.getLayoutManager() instanceof LinearLayoutManager) {
        LinearLayoutManager layoutManager = (LinearLayoutManager) mBinding.historyList.getLayoutManager();
        int lastItem = mHistoryAdapter.getItemCount();
        if ((rowPosition == layoutManager.findLastVisibleItemPosition() || rowPosition == layoutManager.findLastCompletelyVisibleItemPosition() ||
                rowPosition == layoutManager.findLastVisibleItemPosition() - 1 || rowPosition == layoutManager.findLastCompletelyVisibleItemPosition() - 1)
                && (rowPosition != lastItem && rowPosition > 2)) {
            isLastVisibleItem = true;
        }
    }

    if (row != null) {
        mBinding.getCallback().onShowContextMenu(
                row.itemView,
                item,
                isLastVisibleItem);
    }
}

Source File: HorizontalRecyclerViewListener.java From dhis2-android-capture-app with BSD 3-Clause "New" or "Revised" License

6 votes

/**
 * This method calculates the current scroll position and its offset to help new attached
 * recyclerView on window at that position and offset
 *
 * @see #getScrollPosition()
 * @see #getScrollPositionOffset()
 */
private void renewScrollPosition(RecyclerView recyclerView) {
    LinearLayoutManager layoutManager = (LinearLayoutManager) recyclerView.getLayoutManager();
    mScrollPosition = layoutManager.findFirstCompletelyVisibleItemPosition();

    // That means there is no completely visible Position.
    if (mScrollPosition == -1) {
        mScrollPosition = layoutManager.findFirstVisibleItemPosition();

        // That means there is just a visible item on the screen
        if (mScrollPosition == layoutManager.findLastVisibleItemPosition()) {
            // in this case we use the position which is the last & first visible item.
        } else {
            // That means there are 2 visible item on the screen. However, second one is not
            // completely visible.
            mScrollPosition = mScrollPosition + 1;
        }
    }

    mScrollPositionOffset = layoutManager.findViewByPosition(mScrollPosition).getLeft();
}

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

5 votes

private void notifyLoadMoreChanged() {
    if (data.size() == 0) {
        //            数据为空的时候不要显示脚步布局
        if (mLoadMoreFooterContainer!=null&&mLoadMoreFooterContainer.getChildAt(0) instanceof LoadMoreFooterView) {
            ((LoadMoreFooterView) mLoadMoreFooterContainer.getChildAt(0)).setStatus(LoadMoreFooterView.Status.GONE);
        }
        return;
    }
    if (hasMoreLoadView()) {
        int lastVisiblePosition;
        if (layoutManager instanceof LinearLayoutManager) {
            LinearLayoutManager linearLayoutManager = (LinearLayoutManager) layoutManager;
            lastVisiblePosition = linearLayoutManager.findLastVisibleItemPosition();
        } else {
            StaggeredGridLayoutManager gridLayoutManager = (StaggeredGridLayoutManager) layoutManager;
            lastVisiblePosition = gridLayoutManager.findLastVisibleItemPositions(null)[0];
        }
        int position;
        position = getItemUpCount() + getData().size();
        if (lastVisiblePosition == 0 && getData().size() > 0) {
            lastVisiblePosition+=getData().size();
        }
        if (lastVisiblePosition != -1 && lastVisiblePosition == position) {
            if (mLoadMoreFooterContainer.getChildAt(0) instanceof LoadMoreFooterView) {
                ((LoadMoreFooterView) mLoadMoreFooterContainer.getChildAt(0)).setStatus(LoadMoreFooterView.Status.THE_END);
            }
        }
    }
}

Source File: HorizontalScrollCompat.java From SmoothRefreshLayout with MIT License

5 votes

public static boolean canAutoLoadMore(View view) {
    if (ViewCatcherUtil.isRecyclerView(view)) {
        RecyclerView recyclerView = (RecyclerView) view;
        RecyclerView.LayoutManager manager = recyclerView.getLayoutManager();
        if (manager == null) {
            return false;
        }
        int lastVisiblePosition = 0;
        if (manager instanceof LinearLayoutManager) {
            LinearLayoutManager linearManager = ((LinearLayoutManager) manager);
            if (linearManager.getOrientation() != RecyclerView.HORIZONTAL) {
                return false;
            }
            lastVisiblePosition = linearManager.findLastVisibleItemPosition();
        } else if (manager instanceof StaggeredGridLayoutManager) {
            StaggeredGridLayoutManager gridLayoutManager = (StaggeredGridLayoutManager) manager;
            if (gridLayoutManager.getOrientation() != RecyclerView.HORIZONTAL) {
                return false;
            }
            int[] lastPositions = new int[gridLayoutManager.getSpanCount()];
            gridLayoutManager.findLastVisibleItemPositions(lastPositions);
            for (int value : lastPositions) {
                if (value > lastVisiblePosition) {
                    lastVisiblePosition = value;
                }
            }
        }
        RecyclerView.Adapter adapter = recyclerView.getAdapter();
        return adapter != null
                && adapter.getItemCount() > 0
                && lastVisiblePosition >= 0
                && lastVisiblePosition >= adapter.getItemCount() - 1;
    }
    return false;
}

Source File: AsyncAdapter.java From financisto with GNU General Public License v2.0

5 votes

@Override
public void getItemRangeInto(int[] outRange) {
    if (outRange == null) {
        return;
    }
    if(recyclerView.getLayoutManager() instanceof LinearLayoutManager){
        LinearLayoutManager llm = (LinearLayoutManager) recyclerView.getLayoutManager();
        outRange[0] = llm.findFirstVisibleItemPosition();
        outRange[1] = llm.findLastVisibleItemPosition();
    }
    if (outRange[0] == -1 && outRange[1] == -1) {
        outRange[0] = 0;
        outRange[1] = 0;
    }
}

Source File: HomeFragment.java From aptoide-client-v8 with GNU General Public License v3.0

5 votes

@UiThread @Override public void scrollToTop() {
  LinearLayoutManager layoutManager = ((LinearLayoutManager) bundlesList.getLayoutManager());
  int lastVisibleItemPosition = layoutManager.findLastVisibleItemPosition();
  if (lastVisibleItemPosition > 10) {
    bundlesList.scrollToPosition(10);
  }
  bundlesList.smoothScrollToPosition(0);
}

Source File: AppsFragment.java From aptoide-client-v8 with GNU General Public License v3.0

5 votes

@UiThread @Override public void scrollToTop() {
  LinearLayoutManager layoutManager = ((LinearLayoutManager) appsRecyclerView.getLayoutManager());
  int lastVisibleItemPosition = layoutManager.findLastVisibleItemPosition();
  if (lastVisibleItemPosition > 10) {
    appsRecyclerView.scrollToPosition(10);
  }
  appsRecyclerView.smoothScrollToPosition(0);
}

Source File: SearchResultFragment.java From aptoide-client-v8 with GNU General Public License v3.0

5 votes

@Override public void scrollToTop() {
  RecyclerView list;
  if (followedStoresResultList.getVisibility() == View.VISIBLE) {
    list = followedStoresResultList;
  } else {
    list = allStoresResultList;
  }
  LinearLayoutManager layoutManager = ((LinearLayoutManager) list.getLayoutManager());
  int lastVisibleItemPosition = layoutManager.findLastVisibleItemPosition();
  if (lastVisibleItemPosition > 10) {
    list.scrollToPosition(10);
  }
  list.smoothScrollToPosition(0);
}

Source File: MoreBundleFragment.java From aptoide-client-v8 with GNU General Public License v3.0

5 votes

@UiThread @Override public void scrollToTop() {
  LinearLayoutManager layoutManager = ((LinearLayoutManager) bundlesList.getLayoutManager());
  int lastVisibleItemPosition = layoutManager.findLastVisibleItemPosition();
  if (lastVisibleItemPosition > 10) {
    bundlesList.scrollToPosition(10);
  }
  bundlesList.smoothScrollToPosition(0);
}

Source File: MyStoresFragment.java From aptoide-client-v8 with GNU General Public License v3.0

5 votes

@Override @UiThread public void scrollToTop() {
  RecyclerView view = getRecyclerView();
  LinearLayoutManager layoutManager = ((LinearLayoutManager) view.getLayoutManager());
  int lastVisibleItemPosition = layoutManager.findLastVisibleItemPosition();
  if (lastVisibleItemPosition > 10) {
    view.scrollToPosition(10);
  }
  view.smoothScrollToPosition(0);
}

Source File: ZoomableRecyclerView.java From Hentoid with Apache License 2.0

5 votes

@Override
public void onScrolled(int dx, int dy) {
    super.onScrolled(dx, dy);
    LinearLayoutManager layoutManager = (LinearLayoutManager) getLayoutManager();
    if (layoutManager != null) {
        lastVisibleItemPosition = layoutManager.findLastVisibleItemPosition();
        firstVisibleItemPosition = layoutManager.findFirstVisibleItemPosition();
    }
}

Source File: SearchResultFragment.java From aptoide-client-v8 with GNU General Public License v3.0

4 votes

private boolean isEndReached(RecyclerViewScrollEvent event) {
  final LinearLayoutManager layoutManager = (LinearLayoutManager) event.view()
      .getLayoutManager();
  return layoutManager.getItemCount() - layoutManager.findLastVisibleItemPosition()
      <= VISIBLE_THRESHOLD;
}

Source File: ScrollPositionListener.java From Hentoid with Apache License 2.0

4 votes

@Override
public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) {
    super.onScrollStateChanged(recyclerView, newState);
    if (!Preferences.isViewerSwipeToTurn() || !isScrollEnabled) {
        recyclerView.stopScroll();
        return;
    }

    LinearLayoutManager llm = (LinearLayoutManager) recyclerView.getLayoutManager();
    if (llm != null) {
        if (RecyclerView.SCROLL_STATE_DRAGGING == newState) {
            dragStartPositionX = recyclerView.computeHorizontalScrollOffset();
            dragStartPositionY = recyclerView.computeVerticalScrollOffset();
            isSettlingX = false;
            isSettlingY = false;
        } else if (RecyclerView.SCROLL_STATE_SETTLING == newState) {
            // If the settling position is different from the original position, ignore that scroll
            // (e.g. snapping back to the original position after a small scroll)
            if (recyclerView.computeHorizontalScrollOffset() != dragStartPositionX)
                isSettlingX = true;
            if (recyclerView.computeVerticalScrollOffset() != dragStartPositionY)
                isSettlingY = true;
        } else if (RecyclerView.SCROLL_STATE_IDLE == newState) {
            // Don't do anything if we're not on a boundary
            if (!(llm.findLastVisibleItemPosition() == llm.getItemCount() - 1 || 0 == llm.findFirstVisibleItemPosition()))
                return;

            if (recyclerView.computeHorizontalScrollOffset() == dragStartPositionX && !isSettlingX && llm.canScrollHorizontally()) {
                if (0 == dragStartPositionX && !llm.getReverseLayout())
                    onStartOutOfBoundScroll.run();
                else if (0 == dragStartPositionX) onEndOutOfBoundScroll.run();
                else if (llm.getReverseLayout()) onStartOutOfBoundScroll.run();
                else onEndOutOfBoundScroll.run();
            }
            if (recyclerView.computeVerticalScrollOffset() == dragStartPositionY && !isSettlingY && llm.canScrollVertically()) {
                if (0 == dragStartPositionY && !llm.getReverseLayout())
                    onStartOutOfBoundScroll.run();
                else if (0 == dragStartPositionY) onEndOutOfBoundScroll.run();
                else if (llm.getReverseLayout()) onStartOutOfBoundScroll.run();
                else onEndOutOfBoundScroll.run();
            }
        }
    }
}

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