android.support.v7.widget.LinearLayoutManager#getItemCount

Source File: LMRecyclerView.java From WanAndroid with Apache License 2.0

6 votes

/**
 * 滑动监听
 * @param recyclerView
 * @param dx
 * @param dy
 */
@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
    LayoutManager layoutManager = recyclerView.getLayoutManager();

    if (layoutManager instanceof LinearLayoutManager) {
        LinearLayoutManager linearLayout = (LinearLayoutManager) layoutManager;
        int mLastChildPosition = linearLayout.findLastVisibleItemPosition();
        int itemTotalCount = linearLayout.getItemCount();
        View lastChildView = linearLayout.getChildAt(linearLayout.getChildCount() - 1);
        int lastChildBottom = lastChildView.getBottom();
        int recyclerBottom = getBottom();
        if (mLastChildPosition == itemTotalCount - 1 && lastChildBottom == recyclerBottom) {
            if (isCanLoadMore && listener != null) {
                //业务代码
                listener.loadMore();
            }
        }
    }
}

Source File: FragmentStatusList.java From Rumble with GNU General Public License v3.0

6 votes

@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
    super.onScrolled(recyclerView, dx, dy);
    LinearLayoutManager mLayoutManager = (LinearLayoutManager)recyclerView.getLayoutManager();
    int visibleItemCount = mLayoutManager.getChildCount();
    int totalItemCount = mLayoutManager.getItemCount();
    int pastVisiblesItems = mLayoutManager.findFirstVisibleItemPosition();
    if ( (visibleItemCount + pastVisiblesItems) >= totalItemCount) {
        if((!loadingMore) && (!noMoreStatusToLoad)) {
            PushStatus status = statusRecyclerAdapter.getLastItem();
            if(status == null)
                return;
            refreshStatuses(status.getTimeOfArrival(),-1);
        }
    }

    /*
     * since design version > 22, I can't use misc.ScrollAwareFABBehavior because
     * hide() makes the view to GONE and thus doesn't trigger the onNestedScroll
     * So instead we use the Recycler Scroll to trigger the hide/show.
     */
    if (dy > 0)
        composeFAB.hide();
    else if (dy < 0)
        composeFAB.show();
}

Source File: RecyclerRefreshLayout.java From umeng_community_android with MIT License

6 votes

/**
 * 判断是否到了最底部
 */
private boolean isBottom(int dy) {
    // 已经到最后一项且可见的第一项>0
    // if (mRecyclerView != null && mRecyclerView.getAdapter() != null) {
    // int childCount = mRecyclerView.getAdapter().getCount();
    // return childCount > 1
    // && mRecyclerView.getLastVisiblePosition() == childCount - 1;
    // }

    LinearLayoutManager layoutManager = (LinearLayoutManager) mRecyclerView.getLayoutManager();
    int lastVisibleItem = layoutManager.findLastVisibleItemPosition();
    int totalItemCount = layoutManager.getItemCount();
    // dy>0 表示向下滑动
    if (lastVisibleItem >= totalItemCount - 4 && dy > 0) {
        return true;
    }
    return false;
}

Source File: StargazerListActivityViewModel.java From Anago with Apache License 2.0

6 votes

public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
    if (dy > 0) {
        LinearLayoutManager layoutManager = (LinearLayoutManager) recyclerView.getLayoutManager();
        int visible = layoutManager.getChildCount();
        int total = layoutManager.getItemCount();
        int first = layoutManager.findFirstVisibleItemPosition();
        if (visible + first >= total) {
            Timber.v("Scroll End");
            if (!loadingMore) {
                Timber.v("Start loading more");
                loadingMore = true;
                load();
            }
        }
    }
}

Source File: OnLoadMoreListener.java From Toutiao with Apache License 2.0

6 votes

@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
    if (recyclerView.getLayoutManager() instanceof LinearLayoutManager) {
        layoutManager = (LinearLayoutManager) recyclerView.getLayoutManager();

        itemCount = layoutManager.getItemCount();
        lastPosition = layoutManager.findLastCompletelyVisibleItemPosition();
    } else {
        Log.e("OnLoadMoreListener", "The OnLoadMoreListener only support LinearLayoutManager");
        return;
    }

    if (lastItemCount != itemCount && lastPosition == itemCount - 1) {
        lastItemCount = itemCount;
        this.onLoadMore();
    }
}

Source File: ViewToImageUtil.java From ViewToImage with Apache License 2.0

6 votes

/**
 * RecyclerView转换成bitmap
 *
 * @param recyclerView
 * @return
 */
public static List<BitmapWithHeight> getWholeRecyclerViewItemsToBitmap(final RecyclerView recyclerView) {
    List<BitmapWithHeight> list = new ArrayList<>();
    if (recyclerView == null || recyclerView.getAdapter() == null) {
        return list;
    }

    if (recyclerView.getLayoutManager() instanceof LinearLayoutManager) {
        LinearLayoutManager manager = (LinearLayoutManager) recyclerView.getLayoutManager();
        if (manager.getOrientation() == LinearLayoutManager.VERTICAL) {
            int count = manager.getItemCount();
            LogUtils.w(count + "");
            for (int i = 0; i < count; i++) {
                View childView = manager.findViewByPosition(i);
                // TODO: 1/25/16  childView不可见部分为null，无法截长图
                if (childView != null) {
                    list.add(getSimpleViewToBitmap(childView, recyclerView.getMeasuredWidth()));
                }
            }
        } else {
            list.add(getSimpleViewToBitmap(recyclerView, recyclerView.getMeasuredWidth()));
        }
    }

    return list;
}

Source File: LoadMoreRecyclerView.java From ZhihuDaily with Apache License 2.0

6 votes

@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
    LoadMoreRecyclerView view = (LoadMoreRecyclerView) recyclerView;
    onLoadMoreListener onLoadMoreListener = view.getOnLoadMoreListener();

    onLoadMoreListener.onScrolled(recyclerView, dx, dy);

    //if scroll to bottom
    LinearLayoutManager layoutManager = (LinearLayoutManager) view.getLayoutManager();
    int lastVisibleItem = layoutManager.findLastCompletelyVisibleItemPosition();
    int itemCount = layoutManager.getItemCount();
    if (lastVisibleItem >= itemCount - 1 && !view.getLoadingMore()) {
        onLoadMoreListener.onLoadMore();
        L.i(TAG, "load more: lastVisibleItem = " + lastVisibleItem + ", itemCount " + itemCount);
    } else {
        super.onScrolled(recyclerView, dx, dy);
    }
}

Source File: OnLoadMoreListener.java From MiPushFramework with GNU General Public License v3.0

6 votes

@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
    if (recyclerView.getLayoutManager() instanceof LinearLayoutManager) {
        layoutManager = (LinearLayoutManager) recyclerView.getLayoutManager();

        itemCount = layoutManager.getItemCount();
        lastPosition = layoutManager.findLastCompletelyVisibleItemPosition();
    } else {
        Log.e("OnLoadMoreListener", "The OnLoadMoreListener only support LinearLayoutManager");
        return;
    }

    if (lastItemCount != itemCount && (lastPosition > itemCount - 3)) {
        lastItemCount = itemCount;
        this.onLoadMore();
    }
}

Source File: LMRecyclerView.java From gank with GNU General Public License v3.0

5 votes

@Override
    public void onScrollStateChanged(int state) {
       /* LinearLayoutManager mLayoutManager = (LinearLayoutManager) getLayoutManager();
        int lastVisibleItemPosition = 0;
        int totalItemCount = 0;
        if (mLayoutManager instanceof LinearLayoutManager) {
            if (state == RecyclerView.SCROLL_STATE_IDLE) {
                lastVisibleItemPosition = mLayoutManager.findLastCompletelyVisibleItemPosition();
                totalItemCount = mLayoutManager.getItemCount();
                if (lastVisibleItemPosition == (totalItemCount - 1) && isScrollingToBottom) {
                    if (listener != null)
                        listener.loadMore();
                }
            }

        } else if (mLayoutManager instanceof GridLayoutManager) {
            if (state == RecyclerView.SCROLL_STATE_IDLE) {
                lastVisibleItemPosition = mLayoutManager.findLastCompletelyVisibleItemPosition();
                totalItemCount = mLayoutManager.getItemCount();
                if (lastVisibleItemPosition == (totalItemCount - 1) && isScrollingToBottom) {
                    if (listener != null)
                        listener.loadMore();
                }
            }
        }
*/
       LinearLayoutManager layoutManager = (LinearLayoutManager) getLayoutManager();
        if (state == RecyclerView.SCROLL_STATE_IDLE) {
            int lastVisibleItem = layoutManager.findLastCompletelyVisibleItemPosition();
            int totalItemCount = layoutManager.getItemCount();
            if (lastVisibleItem == (totalItemCount - 1) && isScrollingToBottom) {
                if (listener != null)
                    listener.loadMore();
            }
        }
    }

Source File: BaseRecyclerViewModel.java From Android-MVVMFramework with Apache License 2.0

5 votes

@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
    super.onScrolled(recyclerView, dx, dy);
    LinearLayoutManager layoutManager = (LinearLayoutManager) recyclerView.getLayoutManager();
    int lastVisibleItem = layoutManager.findLastVisibleItemPosition();
    int totalItemCount = layoutManager.getItemCount();
    //lastVisibleItem >= totalItemCount - 1 表示剩下1个item自动加载
    // dy>0 表示向下滑动
    if (lastVisibleItem >= totalItemCount - 1 && dy > 0) {
        onListLoadMore();
    }
}

Source File: MultiFuncRecyclerView.java From TestChat with Apache License 2.0

5 votes

private void processLoadMoreData() {
                LinearLayoutManager linearLayoutManager = (LinearLayoutManager) display.getLayoutManager();
                int firstVisibleItemPosition = linearLayoutManager.findFirstVisibleItemPosition();
                int totalCount = linearLayoutManager.getItemCount();
                int visibleCount = linearLayoutManager.getChildCount();
//                这里分两种情况，当缓慢滑动的时候，边滑动边加载，没有接触到底部。当如果快速滑动的时候，还没加载完就滑动到底部
                if ((firstVisibleItemPosition + visibleCount >= totalCount) && !isLoading && totalCount != 1) {
                        LogUtil.e("底部加载拉");
                        if (mOnMoreDataLoadListener != null) {
                                isLoading = true;
                                moreLoadView.setVisibility(VISIBLE);
                                mOnMoreDataLoadListener.onMoreDataLoad(totalCount, firstVisibleItemPosition);
                        }
                }
        }

Source File: ExcelPanel.java From excelPanel with Apache License 2.0

5 votes

@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
    super.onScrolled(recyclerView, dx, dy);
    amountAxisX += dx;
    fastScrollTo(amountAxisX, mRecyclerView, loadingViewWidth, hasHeader);
    fastScrollTo(amountAxisX, topRecyclerView, loadingViewWidth, hasHeader);
    if (dx == 0 && dy == 0) {
        return;
    }
    if (mScrollListeners != null) {
        for (int i = mScrollListeners.size() - 1; i >= 0; i--) {
            OnScrollListener listener = mScrollListeners.get(i);
            if (listener != null) {
                listener.onScrolled(ExcelPanel.this, dx, dy);
            }
        }
    }
    LinearLayoutManager manager = (LinearLayoutManager) recyclerView.getLayoutManager();
    int visibleItemCount = recyclerView.getChildCount();
    int totalItemCount = manager.getItemCount();
    int firstVisibleItem = manager.findFirstVisibleItemPosition();
    if (totalItemCount - visibleItemCount <= firstVisibleItem && onLoadMoreListener != null && hasFooter) {
        onLoadMoreListener.onLoadMore();
    }
    if (amountAxisX < loadingViewWidth && onLoadMoreListener != null && hasHeader) {
        onLoadMoreListener.onLoadHistory();
    }
    if (((hasHeader && amountAxisX > loadingViewWidth) || (!hasHeader && amountAxisX > 0)) && dividerLineVisible) {
        dividerLine.setVisibility(VISIBLE);
    } else {
        dividerLine.setVisibility(GONE);
    }
}

Source File: EndlessScrollListener.java From BaseQuickAdapter with Apache License 2.0

5 votes

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

    BaseQuickAdapter adapter = (BaseQuickAdapter) recyclerView.getAdapter();

    LinearLayoutManager layoutManager = (LinearLayoutManager) recyclerView.getLayoutManager();
    int lastVisibleItemPosition = layoutManager.findLastVisibleItemPosition();
    if (newState == RecyclerView.SCROLL_STATE_IDLE && lastVisibleItemPosition + 1 == layoutManager.getItemCount() && adapter.isHasMore()) {
        //当已经滑到最后一条的时候
        adapter.isLoadingMore();
    }
}

Source File: OnScrollToLastListener.java From kaif-android with Apache License 2.0

5 votes

@Override
public final void onScrolled(RecyclerView recyclerView, int dx, int dy) {
  LinearLayoutManager layoutManager = (LinearLayoutManager) recyclerView.getLayoutManager();

  int visibleItemCount = layoutManager.getChildCount();
  int totalItemCount = layoutManager.getItemCount();
  int pastVisibleItems = layoutManager.findFirstVisibleItemPosition();

  if ((visibleItemCount + pastVisibleItems) >= totalItemCount) {
    onScrollToLast();
  }
}

Source File: GravitySnapHelper.java From SuntimesWidget with GNU General Public License v3.0

5 votes

private boolean isAtEdgeOfList(LinearLayoutManager lm) {
    if ((!lm.getReverseLayout() && gravity == Gravity.START)
            || (lm.getReverseLayout() && gravity == Gravity.END)
            || (!lm.getReverseLayout() && gravity == Gravity.TOP)
            || (lm.getReverseLayout() && gravity == Gravity.BOTTOM)) {
        return lm.findLastCompletelyVisibleItemPosition() == lm.getItemCount() - 1;
    } else if (gravity == Gravity.CENTER) {
        return lm.findFirstCompletelyVisibleItemPosition() == 0
                || lm.findLastCompletelyVisibleItemPosition() == lm.getItemCount() - 1;
    } else {
        return lm.findFirstCompletelyVisibleItemPosition() == 0;
    }
}

Source File: LMRecyclerView.java From Gank.io with GNU General Public License v3.0

5 votes

@Override
public void onScrollStateChanged(int state) {
  LinearLayoutManager layoutManager = (LinearLayoutManager) getLayoutManager();
  if (state == RecyclerView.SCROLL_STATE_IDLE) {
    int lastVisibleItem = layoutManager.findLastCompletelyVisibleItemPosition();
    int totalItemCount = layoutManager.getItemCount();
    if (lastVisibleItem == (totalItemCount - 1) && isScrollingToBottom) {
      if (listener != null)
        listener.loadMore();
    }
  }
}

Source File: ViewAdapter.java From AndroidWallet with GNU General Public License v3.0

5 votes

@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
    LinearLayoutManager layoutManager = (LinearLayoutManager) recyclerView.getLayoutManager();
    int visibleItemCount = layoutManager.getChildCount();
    int totalItemCount = layoutManager.getItemCount();
    int pastVisiblesItems = layoutManager.findFirstVisibleItemPosition();
    if ((visibleItemCount + pastVisiblesItems) >= totalItemCount) {
        if (onLoadMoreCommand != null) {
            methodInvoke.onNext(recyclerView.getAdapter().getItemCount());
        }
    }
}

Source File: ScrollManager.java From Mover with Apache License 2.0

5 votes

public void loadMoreItemsIfNecessary(RecyclerView recyclerView){
    LinearLayoutManager layout = (LinearLayoutManager) recyclerView.getLayoutManager();

    int visibleItemCount = recyclerView.getChildCount();
    int totalItemCount = layout.getItemCount();
    int firstVisibleItem = layout.findFirstVisibleItemPosition();

    if ((totalItemCount - (firstVisibleItem +
            visibleItemCount)) <= LOAD_IF_LESS_THAN){
        mEventBus.post(mMoreEvent);
    }
}

Source File: EndlessAdapter.java From SteamGifts with MIT License

5 votes

@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
    LinearLayoutManager layoutManager = (LinearLayoutManager) recyclerView.getLayoutManager();
    if (layoutManager == null)
        throw new IllegalStateException("Can't handle scrolling without a LayoutManager");

    int lastVisibleItem = layoutManager.findLastVisibleItemPosition();

    if (!loading && layoutManager.getItemCount() <= (lastVisibleItem + 5)) {
        startLoading();
    }
}

Source File: AutoLoadRecyclerView.java From the-tech-frontier-app with MIT License

4 votes

private boolean isBottom(int dx, int dy) {
    LinearLayoutManager layoutManager = (LinearLayoutManager) getLayoutManager();
    int lastVisibleItem = layoutManager.findLastVisibleItemPosition();
    int totalItemCount = layoutManager.getItemCount();
    return lastVisibleItem >= totalItemCount - 4 && dy > 0;
}

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