Java Code Examples for android.support.v7.widget.StaggeredGridLayoutManager#getSpanCount()
The following examples show how to use
android.support.v7.widget.StaggeredGridLayoutManager#getSpanCount() .
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Example 1
| Source File: StaggeredSpaceDecoration.java From ItemDecorationDemo with Apache License 2.0 | 6 votes |
|
@Override
public void getItemOffsets(@NonNull Rect outRect, @NonNull View view,
@NonNull RecyclerView parent, @NonNull RecyclerView.State state) {
RecyclerView.LayoutManager originalManager = parent.getLayoutManager();
if (originalManager == null || !(originalManager instanceof StaggeredGridLayoutManager)) {
return;
}
StaggeredGridLayoutManager manager = (StaggeredGridLayoutManager) originalManager;
mSpanCount = manager.getSpanCount();
mItemCount = parent.getAdapter().getItemCount();
if (manager.getOrientation() == StaggeredGridLayoutManager.VERTICAL) {
handleVertical(outRect, view, parent);
} else {
handleHorizontal(outRect, view, parent);
}
}
Example 2
| Source File: RecyclerViewScrollListener.java From Android-RecyclerViewHelper with Apache License 2.0 | 6 votes |
|
@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
if (layoutManager instanceof GridLayoutManager) {
lastVisibleItemPosition = ((GridLayoutManager) layoutManager).findLastVisibleItemPosition();
} else if (layoutManager instanceof LinearLayoutManager) {
lastVisibleItemPosition = ((LinearLayoutManager) layoutManager).findLastVisibleItemPosition();
} else if (layoutManager instanceof StaggeredGridLayoutManager) {
StaggeredGridLayoutManager staggeredGridLayoutManager = (StaggeredGridLayoutManager) layoutManager;
if (lastPositions == null) {
lastPositions = new int[staggeredGridLayoutManager.getSpanCount()];
}
staggeredGridLayoutManager.findLastVisibleItemPositions(lastPositions);
lastVisibleItemPosition = findMax(lastPositions);
} else {
throw new RuntimeException("Unsupported LayoutManager used. " +
"Valid ones are LinearLayoutManager, GridLayoutManager and StaggeredGridLayoutManager");
}
}
Example 3
| Source File: OnRecyclerViewScrollListener.java From ExRecyclerView with Apache License 2.0 | 6 votes |
|
/**
* 计算第一个元素的位置
*/
private int calculateFirstVisibleItemPos(RecyclerView.LayoutManager layoutManager, int firstVisibleItemPosition) {
switch (mLayoutManagerType) {
case LINEAR:
mLastVisibleItemPosition = ((LinearLayoutManager) layoutManager).findLastVisibleItemPosition();
firstVisibleItemPosition = ((LinearLayoutManager) layoutManager).findFirstVisibleItemPosition();
break;
case GRID:
mLastVisibleItemPosition = ((GridLayoutManager) layoutManager).findLastVisibleItemPosition();
firstVisibleItemPosition = ((GridLayoutManager) layoutManager).findFirstVisibleItemPosition();
break;
case STAGGERED_GRID:
StaggeredGridLayoutManager staggeredGridLayoutManager = (StaggeredGridLayoutManager) layoutManager;
if (mLastPositions == null) {
mLastPositions = new int[staggeredGridLayoutManager.getSpanCount()];
}
mLastPositions = staggeredGridLayoutManager.findLastVisibleItemPositions(mLastPositions);
mLastVisibleItemPosition = findMax(mLastPositions);
staggeredGridLayoutManager.findFirstCompletelyVisibleItemPositions(mLastPositions);
firstVisibleItemPosition = findMax(mLastPositions);
break;
}
return firstVisibleItemPosition;
}
Example 4
| Source File: FamiliarDefaultItemDecoration.java From AndroidBase with Apache License 2.0 | 5 votes |
|
private void initLayoutManagerType() {
this.mLayoutManagerType = mRecyclerViewListener.getCurLayoutManagerType();
RecyclerView.LayoutManager layoutManager = mRecyclerViewListener.getCurLayoutManager();
switch (mLayoutManagerType) {
case FamiliarRecyclerView.LAYOUT_MANAGER_TYPE_LINEAR:
LinearLayoutManager curLinearLayoutManager = (LinearLayoutManager)layoutManager;
if (curLinearLayoutManager.getOrientation() == LinearLayoutManager.HORIZONTAL) {
mOrientation = OrientationHelper.HORIZONTAL;
} else {
mOrientation = OrientationHelper.VERTICAL;
}
break;
case FamiliarRecyclerView.LAYOUT_MANAGER_TYPE_GRID:
GridLayoutManager curGridLayoutManager = (GridLayoutManager)layoutManager;
mGridSpanCount = curGridLayoutManager.getSpanCount();
if (curGridLayoutManager.getOrientation() == LinearLayoutManager.HORIZONTAL) {
mOrientation = OrientationHelper.HORIZONTAL;
} else {
mOrientation = OrientationHelper.VERTICAL;
}
break;
case FamiliarRecyclerView.LAYOUT_MANAGER_TYPE_STAGGERED_GRID:
StaggeredGridLayoutManager curStaggeredGridLayoutManager = (StaggeredGridLayoutManager)layoutManager;
mGridSpanCount = curStaggeredGridLayoutManager.getSpanCount();
if (curStaggeredGridLayoutManager.getOrientation() == LinearLayoutManager.HORIZONTAL) {
mOrientation = OrientationHelper.HORIZONTAL;
} else {
mOrientation = OrientationHelper.VERTICAL;
}
break;
default:
this.mLayoutManagerType = FamiliarRecyclerView.LAYOUT_MANAGER_TYPE_LINEAR;
}
initDivisible();
}
Example 5
| Source File: EasyRefreshLayout.java From EasyRefreshLayout with Apache License 2.0 | 5 votes |
|
/**
* 最后一个的位置
*/
private int getLastVisiBleItem() {
RecyclerView.LayoutManager layoutManager = mRecyclerView.getLayoutManager();
int lastVisibleItemPosition = -1;
int layoutManagerType = 0;
if (layoutManager instanceof GridLayoutManager) {
layoutManagerType = 1;
} else if (layoutManager instanceof LinearLayoutManager) {
layoutManagerType = 0;
} else if (layoutManager instanceof StaggeredGridLayoutManager) {
layoutManagerType = 2;
} else {
throw new RuntimeException(
"Unsupported LayoutManager used. Valid ones are LinearLayoutManager, GridLayoutManager and StaggeredGridLayoutManager");
}
switch (layoutManagerType) {
case 0:
lastVisibleItemPosition = ((LinearLayoutManager) layoutManager).findLastVisibleItemPosition();
break;
case 1:
lastVisibleItemPosition = ((GridLayoutManager) layoutManager).findLastVisibleItemPosition();
break;
case 2:
StaggeredGridLayoutManager staggeredGridLayoutManager = (StaggeredGridLayoutManager) layoutManager;
int[] lastPositions = new int[staggeredGridLayoutManager.getSpanCount()];
staggeredGridLayoutManager.findLastVisibleItemPositions(lastPositions);
lastVisibleItemPosition = findMax(lastPositions);
break;
}
return lastVisibleItemPosition;
}
Example 6
| Source File: EndlessRecyclerOnScrollListener.java From HeaderAndFooterRecyclerView with Apache License 2.0 | 5 votes |
|
@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
if (layoutManagerType == null) {
if (layoutManager instanceof GridLayoutManager) {
layoutManagerType = LayoutManagerType.GridLayout;
} else if (layoutManager instanceof LinearLayoutManager) {
layoutManagerType = LayoutManagerType.LinearLayout;
} else if (layoutManager instanceof StaggeredGridLayoutManager) {
layoutManagerType = LayoutManagerType.StaggeredGridLayout;
} else {
throw new RuntimeException(
"Unsupported LayoutManager used. Valid ones are LinearLayoutManager, GridLayoutManager and StaggeredGridLayoutManager");
}
}
switch (layoutManagerType) {
case LinearLayout:
lastVisibleItemPosition = ((LinearLayoutManager) layoutManager).findLastVisibleItemPosition();
break;
case GridLayout:
lastVisibleItemPosition = ((GridLayoutManager) layoutManager).findLastVisibleItemPosition();
break;
case StaggeredGridLayout:
StaggeredGridLayoutManager staggeredGridLayoutManager = (StaggeredGridLayoutManager) layoutManager;
if (lastPositions == null) {
lastPositions = new int[staggeredGridLayoutManager.getSpanCount()];
}
staggeredGridLayoutManager.findLastVisibleItemPositions(lastPositions);
lastVisibleItemPosition = findMax(lastPositions);
break;
}
}
Example 7
| Source File: BasePullUpRecyclerAdapter.java From CoreModule with Apache License 2.0 | 5 votes |
|
@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
if (layoutManager instanceof LinearLayoutManager) {
layoutManagerType = LINEAR;
} else if (layoutManager instanceof GridLayoutManager) {
layoutManagerType = GRID;
} else if (layoutManager instanceof StaggeredGridLayoutManager) {
layoutManagerType = STAGGERED_GRID;
} else {
throw new RuntimeException(
"Unsupported LayoutManager used. Valid ones are " +
"LinearLayoutManager, GridLayoutManager and " +
"StaggeredGridLayoutManager");
}
switch (layoutManagerType) {
case LINEAR:
lastVisibleItem = ((LinearLayoutManager) layoutManager)
.findLastVisibleItemPosition();
break;
case GRID:
lastVisibleItem = ((GridLayoutManager) layoutManager)
.findLastVisibleItemPosition();
break;
case STAGGERED_GRID:
StaggeredGridLayoutManager staggeredGridLayoutManager
= (StaggeredGridLayoutManager) layoutManager;
lastPositions = new int[staggeredGridLayoutManager.getSpanCount()];
staggeredGridLayoutManager.findLastVisibleItemPositions(lastPositions);
lastVisibleItem = findMax(lastPositions);
break;
}
}
Example 8
| Source File: DRecyclerViewScrollListener.java From Pas with Apache License 2.0 | 5 votes |
|
@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
if (layoutManagerType == null) {
if (layoutManager instanceof LinearLayoutManager) {
layoutManagerType = LayoutManagerType.LinearLayout;
} else if (layoutManager instanceof GridLayoutManager) {
layoutManagerType = LayoutManagerType.GridLayout;
} else if (layoutManager instanceof StaggeredGridLayoutManager) {
layoutManagerType = LayoutManagerType.StaggeredGridLayout;
} else {
throw new RuntimeException(
"Unsupported LayoutManager used. Valid ones are LinearLayoutManager, GridLayoutManager and StaggeredGridLayoutManager");
}
}
switch (layoutManagerType) {
case LinearLayout:
lastVisibleItemPosition = ((LinearLayoutManager) layoutManager).findLastVisibleItemPosition();
break;
case GridLayout:
lastVisibleItemPosition = ((GridLayoutManager) layoutManager).findLastVisibleItemPosition();
break;
case StaggeredGridLayout:
StaggeredGridLayoutManager staggeredGridLayoutManager = (StaggeredGridLayoutManager) layoutManager;
if (lastPositions == null) {
lastPositions = new int[staggeredGridLayoutManager.getSpanCount()];
}
staggeredGridLayoutManager.findLastVisibleItemPositions(lastPositions);
lastVisibleItemPosition = findMax(lastPositions);
break;
}
}
Example 9
| Source File: BasePullUpRecyclerAdapter.java From RecyclerViewDemo with Apache License 2.0 | 5 votes |
|
@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
if (layoutManager instanceof LinearLayoutManager) {
layoutManagerType = LINEAR;
} else if (layoutManager instanceof GridLayoutManager) {
layoutManagerType = GRID;
} else if (layoutManager instanceof StaggeredGridLayoutManager) {
layoutManagerType = STAGGERED_GRID;
} else {
throw new RuntimeException(
"Unsupported LayoutManager used. Valid ones are " +
"LinearLayoutManager, GridLayoutManager and " +
"StaggeredGridLayoutManager");
}
switch (layoutManagerType) {
case LINEAR:
lastVisibleItem = ((LinearLayoutManager) layoutManager)
.findLastVisibleItemPosition();
break;
case GRID:
lastVisibleItem = ((GridLayoutManager) layoutManager)
.findLastVisibleItemPosition();
break;
case STAGGERED_GRID:
StaggeredGridLayoutManager staggeredGridLayoutManager
= (StaggeredGridLayoutManager) layoutManager;
lastPositions = new int[staggeredGridLayoutManager.getSpanCount()];
staggeredGridLayoutManager.findLastVisibleItemPositions(lastPositions);
lastVisibleItem = findMax(lastPositions);
break;
}
}
Example 10
| Source File: RecyclerViewOnScroll.java From GankGirl with GNU Lesser General Public License v2.1 | 5 votes |
|
@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
if (layoutManagerType == null) {
if (layoutManager instanceof LinearLayoutManager) {
layoutManagerType = LayoutManagerType.LinearLayout;
} else if (layoutManager instanceof GridLayoutManager) {
layoutManagerType = LayoutManagerType.GridLayout;
} else if (layoutManager instanceof StaggeredGridLayoutManager) {
layoutManagerType = LayoutManagerType.StaggeredGridLayout;
} else {
throw new RuntimeException(
"Unsupported LayoutManager used. Valid ones are LinearLayoutManager, GridLayoutManager and StaggeredGridLayoutManager");
}
}
switch (layoutManagerType) {
case LinearLayout:
lastVisibleItemPosition = ((LinearLayoutManager) layoutManager).findLastVisibleItemPosition();
break;
case GridLayout:
lastVisibleItemPosition = ((GridLayoutManager) layoutManager).findLastVisibleItemPosition();
break;
case StaggeredGridLayout:
StaggeredGridLayoutManager staggeredGridLayoutManager = (StaggeredGridLayoutManager) layoutManager;
if (lastPositions == null) {
lastPositions = new int[staggeredGridLayoutManager.getSpanCount()];
}
staggeredGridLayoutManager.findLastVisibleItemPositions(lastPositions);
lastVisibleItemPosition = findMax(lastPositions);
break;
}
}
Example 11
| Source File: EndlessRecyclerOnScrollListener.java From HeaderFooterRecyclerView with Apache License 2.0 | 5 votes |
|
@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
if (layoutManagerType == null) {
if (layoutManager instanceof LinearLayoutManager) {
layoutManagerType = LayoutManagerType.LinearLayout;
} else if (layoutManager instanceof GridLayoutManager) {
layoutManagerType = LayoutManagerType.GridLayout;
} else if (layoutManager instanceof StaggeredGridLayoutManager) {
layoutManagerType = LayoutManagerType.StaggeredGridLayout;
} else {
throw new RuntimeException(
"Unsupported LayoutManager used. Valid ones are LinearLayoutManager, GridLayoutManager and StaggeredGridLayoutManager");
}
}
switch (layoutManagerType) {
case LinearLayout:
lastVisibleItemPosition = ((LinearLayoutManager) layoutManager).findLastVisibleItemPosition();
break;
case GridLayout:
lastVisibleItemPosition = ((GridLayoutManager) layoutManager).findLastVisibleItemPosition();
break;
case StaggeredGridLayout:
StaggeredGridLayoutManager staggeredGridLayoutManager = (StaggeredGridLayoutManager) layoutManager;
if (lastPositions == null) {
lastPositions = new int[staggeredGridLayoutManager.getSpanCount()];
}
staggeredGridLayoutManager.findLastVisibleItemPositions(lastPositions);
lastVisibleItemPosition = findMax(lastPositions);
break;
}
}
Example 12
| Source File: QuickReturnRecyclerView.java From droidddle with Apache License 2.0 | 4 votes |
|
public void checkLoadingMore() {
boolean firstVisible = false;
LayoutManager manager = getLayoutManager();
int visibleItemCount = manager.getChildCount();
int totalItemCount = manager.getItemCount();
int firstVisibleItems = 0;
if (manager instanceof LinearLayoutManager) {
firstVisibleItems = ((LinearLayoutManager) manager).findFirstVisibleItemPosition();
} else if (manager instanceof GridLayoutManager) {
firstVisibleItems = ((GridLayoutManager) manager).findFirstVisibleItemPosition();
} else if (manager instanceof StaggeredGridLayoutManager) {
StaggeredGridLayoutManager sg = ((StaggeredGridLayoutManager) manager);
int[] items = new int[sg.getSpanCount()];
items = ((StaggeredGridLayoutManager) manager).findFirstVisibleItemPositions(items);
firstVisibleItems = items[0];
}
// boolean topOfFirstItemVisible = manager.getChildAt(0).getTop() >= mFirstTop;
// enabling or disabling the refresh layout
if (firstVisibleItems == 0) {
View child = manager.getChildAt(0);
if (child != null) {
LayoutParams lp = (LayoutParams) child.getLayoutParams();
firstVisible = manager.getChildAt(0).getTop() >= (getPaddingTop() + lp.topMargin);
}
}
// firstVisible = firstVisibleItems == 0 && topOfFirstItemVisible;
mMoreListener.isFirstItemFullVisible(firstVisible);
if (!mIsLoadingMore && mHasMoreData) {
if ((visibleItemCount + firstVisibleItems) >= totalItemCount - 1) {
if (!Utils.hasInternet(getContext())) {
return;
}
mIsLoadingMore = true;
mMoreListener.onLoadingMore();
}
}
}
Example 13
| Source File: WXRecyclerViewOnScrollListener.java From weex with Apache License 2.0 | 4 votes |
|
@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
// int lastVisibleItemPosition = -1;
if (layoutManagerType == null) {
if (layoutManager instanceof LinearLayoutManager) {
layoutManagerType = LAYOUT_MANAGER_TYPE.LINEAR;
} else if (layoutManager instanceof GridLayoutManager) {
layoutManagerType = LAYOUT_MANAGER_TYPE.GRID;
} else if (layoutManager instanceof StaggeredGridLayoutManager) {
layoutManagerType = LAYOUT_MANAGER_TYPE.STAGGERED_GRID;
} else {
throw new RuntimeException(
"Unsupported LayoutManager used. Valid ones are LinearLayoutManager, GridLayoutManager and StaggeredGridLayoutManager");
}
}
switch (layoutManagerType) {
case LINEAR:
lastVisibleItemPosition = ((LinearLayoutManager) layoutManager)
.findLastVisibleItemPosition();
listener.get().notifyAppearStateChange(((LinearLayoutManager) layoutManager).findFirstVisibleItemPosition()
,lastVisibleItemPosition
,dx
,dy);
break;
case GRID:
lastVisibleItemPosition = ((GridLayoutManager) layoutManager)
.findLastVisibleItemPosition();
break;
case STAGGERED_GRID:
StaggeredGridLayoutManager staggeredGridLayoutManager
= (StaggeredGridLayoutManager) layoutManager;
if (lastPositions == null) {
lastPositions = new int[staggeredGridLayoutManager.getSpanCount()];
}
staggeredGridLayoutManager.findLastVisibleItemPositions(lastPositions);
lastVisibleItemPosition = findMax(lastPositions);
break;
}
}
Example 14
| Source File: LuRecyclerView.java From LRecyclerView with Apache License 2.0 | 4 votes |
|
@Override
public void onScrolled(int dx, int dy) {
super.onScrolled(dx, dy);
int firstVisibleItemPosition = 0;
RecyclerView.LayoutManager layoutManager = getLayoutManager();
if (layoutManagerType == null) {
if (layoutManager instanceof LinearLayoutManager) {
layoutManagerType = LayoutManagerType.LinearLayout;
} else if (layoutManager instanceof GridLayoutManager) {
layoutManagerType = LayoutManagerType.GridLayout;
} else if (layoutManager instanceof StaggeredGridLayoutManager) {
layoutManagerType = LayoutManagerType.StaggeredGridLayout;
} else {
throw new RuntimeException(
"Unsupported LayoutManager used. Valid ones are LinearLayoutManager, GridLayoutManager and StaggeredGridLayoutManager");
}
}
switch (layoutManagerType) {
case LinearLayout:
firstVisibleItemPosition = ((LinearLayoutManager) layoutManager).findFirstVisibleItemPosition();
lastVisibleItemPosition = ((LinearLayoutManager) layoutManager).findLastVisibleItemPosition();
break;
case GridLayout:
firstVisibleItemPosition = ((GridLayoutManager) layoutManager).findFirstVisibleItemPosition();
lastVisibleItemPosition = ((GridLayoutManager) layoutManager).findLastVisibleItemPosition();
break;
case StaggeredGridLayout:
StaggeredGridLayoutManager staggeredGridLayoutManager = (StaggeredGridLayoutManager) layoutManager;
if (lastPositions == null) {
lastPositions = new int[staggeredGridLayoutManager.getSpanCount()];
}
staggeredGridLayoutManager.findLastVisibleItemPositions(lastPositions);
lastVisibleItemPosition = findMax(lastPositions);
staggeredGridLayoutManager.findFirstCompletelyVisibleItemPositions(lastPositions);
firstVisibleItemPosition = findMax(lastPositions);
break;
default:
break;
}
// 根据类型来计算出第一个可见的item的位置，由此判断是否触发到底部的监听器
// 计算并判断当前是向上滑动还是向下滑动
calculateScrollUpOrDown(firstVisibleItemPosition, dy);
// 移动距离超过一定的范围，我们监听就没有啥实际的意义了
mScrolledXDistance += dx;
mScrolledYDistance += dy;
mScrolledXDistance = (mScrolledXDistance < 0) ? 0 : mScrolledXDistance;
mScrolledYDistance = (mScrolledYDistance < 0) ? 0 : mScrolledYDistance;
if (mIsScrollDown && (dy == 0)) {
mScrolledYDistance = 0;
}
//Be careful in here
if (null != mLScrollListener) {
mLScrollListener.onScrolled(mScrolledXDistance, mScrolledYDistance);
}
//如果想要滑动到底部自动加载更多，mIsManualLoadMore必须为false
if (mIsManualLoadMore) {
if (!isNoMore) {
Log.e("lzx","onScrooo set visible");
mLoadingData = true;
mLoadMoreFooter.setOnClickLoadMoreListener(mLoadMoreListener);
}
} else {
if (mLoadMoreListener != null && mLoadMoreEnabled) {
int visibleItemCount = layoutManager.getChildCount();
int totalItemCount = layoutManager.getItemCount();
if (visibleItemCount > 0
&& lastVisibleItemPosition >= totalItemCount - 1
&& (isCritical ? totalItemCount >= visibleItemCount : totalItemCount > visibleItemCount)
&& !isNoMore
&& !mRefreshing) {
mFootView.setVisibility(View.VISIBLE);
if (!mLoadingData) {
mLoadingData = true;
mLoadMoreFooter.onLoading();
mLoadMoreListener.onLoadMore();
}
}
}
}
}
Example 15
| Source File: LRecyclerView.java From LRecyclerView with Apache License 2.0 | 4 votes |
|
@Override
public void onScrolled(int dx, int dy) {
super.onScrolled(dx, dy);
int firstVisibleItemPosition = 0;
RecyclerView.LayoutManager layoutManager = getLayoutManager();
if (layoutManagerType == null) {
if (layoutManager instanceof LinearLayoutManager) {
layoutManagerType = LayoutManagerType.LinearLayout;
} else if (layoutManager instanceof GridLayoutManager) {
layoutManagerType = LayoutManagerType.GridLayout;
} else if (layoutManager instanceof StaggeredGridLayoutManager) {
layoutManagerType = LayoutManagerType.StaggeredGridLayout;
} else {
throw new RuntimeException(
"Unsupported LayoutManager used. Valid ones are LinearLayoutManager, GridLayoutManager and StaggeredGridLayoutManager");
}
}
switch (layoutManagerType) {
case LinearLayout:
firstVisibleItemPosition = ((LinearLayoutManager) layoutManager).findFirstVisibleItemPosition();
lastVisibleItemPosition = ((LinearLayoutManager) layoutManager).findLastVisibleItemPosition();
break;
case GridLayout:
firstVisibleItemPosition = ((GridLayoutManager) layoutManager).findFirstVisibleItemPosition();
lastVisibleItemPosition = ((GridLayoutManager) layoutManager).findLastVisibleItemPosition();
break;
case StaggeredGridLayout:
StaggeredGridLayoutManager staggeredGridLayoutManager = (StaggeredGridLayoutManager) layoutManager;
if (lastPositions == null) {
lastPositions = new int[staggeredGridLayoutManager.getSpanCount()];
}
staggeredGridLayoutManager.findLastVisibleItemPositions(lastPositions);
lastVisibleItemPosition = findMax(lastPositions);
staggeredGridLayoutManager.findFirstCompletelyVisibleItemPositions(lastPositions);
firstVisibleItemPosition = findMax(lastPositions);
break;
default:
break;
}
// 根据类型来计算出第一个可见的item的位置，由此判断是否触发到底部的监听器
// 计算并判断当前是向上滑动还是向下滑动
calculateScrollUpOrDown(firstVisibleItemPosition, dy);
// 移动距离超过一定的范围，我们监听就没有啥实际的意义了
mScrolledXDistance += dx;
mScrolledYDistance += dy;
mScrolledXDistance = (mScrolledXDistance < 0) ? 0 : mScrolledXDistance;
mScrolledYDistance = (mScrolledYDistance < 0) ? 0 : mScrolledYDistance;
if (mIsScrollDown && (dy == 0)) {
mScrolledYDistance = 0;
}
//Be careful in here
if (null != mLScrollListener) {
mLScrollListener.onScrolled(mScrolledXDistance, mScrolledYDistance);
}
if (mLoadMoreListener != null && mLoadMoreEnabled) {
int visibleItemCount = layoutManager.getChildCount();
int totalItemCount = layoutManager.getItemCount();
if (visibleItemCount > 0
&& lastVisibleItemPosition >= totalItemCount - 1
&& (isCritical ? totalItemCount >= visibleItemCount : totalItemCount > visibleItemCount)
&& !isNoMore
&& !mRefreshing) {
mFootView.setVisibility(View.VISIBLE);
if (!mLoadingData) {
mLoadingData = true;
mLoadMoreFooter.onLoading();
mLoadMoreListener.onLoadMore();
}
}
}
if (isOnTop() && dy > 0 && mRefreshHeader.getType() == IRefreshHeader.TYPE_HEADER_MATERIAL && !mRefreshing && (appbarState
== AppBarStateChangeListener.State.EXPANDED)) {
mRefreshHeader.onMove(dy, mScrolledYDistance);
}
}
Example 16
| Source File: RecyclerViewScrollListener.java From Social with Apache License 2.0 | 4 votes |
|
@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
Log.d(TAG, "onScrolled: dy = " + dy);
/**
* 获取布局参数
*/
RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
//如果为null，第一次运行，确定布局类型
if (mLayoutManagerType == null) {
if (layoutManager instanceof LinearLayoutManager) {
mLayoutManagerType = LayoutManagerType.LINEAR_LAYOUT;
} else if (layoutManager instanceof GridLayoutManager) {
mLayoutManagerType = LayoutManagerType.GRID_LAYOUT;
} else if (layoutManager instanceof StaggeredGridLayoutManager) {
mLayoutManagerType = LayoutManagerType.STAGGERED_GRID_LAYOUT;
} else {
throw new RuntimeException("LayoutManager should be LinearLayoutManager,GridLayoutManager,StaggeredGridLayoutManager");
}
}
//对于不太能够的布局参数，不同的方法获取到当前显示的最后一个条目数
switch (mLayoutManagerType) {
case LINEAR_LAYOUT:
mLastVisibleItemPosition = ((LinearLayoutManager) layoutManager).findLastVisibleItemPosition();
break;
case GRID_LAYOUT:
mLastVisibleItemPosition = ((GridLayoutManager) layoutManager).findLastVisibleItemPosition();
int firstItemPosition = ((GridLayoutManager) layoutManager).findFirstVisibleItemPosition();
Log.d(TAG, "onScrolled: firstPosition = " + firstItemPosition);
break;
case STAGGERED_GRID_LAYOUT:
StaggeredGridLayoutManager staggeredGridLayoutManager = (StaggeredGridLayoutManager) layoutManager;
if (mLastPostions == null) {
mLastPostions = new int[staggeredGridLayoutManager.getSpanCount()];
}
staggeredGridLayoutManager.findLastVisibleItemPositions(mLastPostions);
mLastVisibleItemPosition = findMax(mLastPostions);
break;
default:
break;
}
}
Example 17
| Source File: WXRecyclerViewOnScrollListener.java From ucar-weex-core with Apache License 2.0 | 4 votes |
|
@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
if(listener == null){
return;
}
IOnLoadMoreListener iOnLoadMoreListener = listener.get();
if(iOnLoadMoreListener!=null) {
iOnLoadMoreListener.onBeforeScroll(dx, dy);
if (layoutManager instanceof LinearLayoutManager) {
layoutManagerType = LAYOUT_MANAGER_TYPE.LINEAR;
LinearLayoutManager linearLayoutManager = (LinearLayoutManager) layoutManager;
mLastVisibleItemPosition = linearLayoutManager.findLastVisibleItemPosition();
int firstVisible = linearLayoutManager.findFirstVisibleItemPosition();
iOnLoadMoreListener.notifyAppearStateChange(firstVisible
, mLastVisibleItemPosition
, dx
, dy);
} else if (layoutManager instanceof GridLayoutManager) {
layoutManagerType = LAYOUT_MANAGER_TYPE.GRID;
GridLayoutManager gridLayoutManager = (GridLayoutManager) layoutManager;
mLastVisibleItemPosition = gridLayoutManager.findLastVisibleItemPosition();
iOnLoadMoreListener.notifyAppearStateChange(gridLayoutManager.findFirstVisibleItemPosition()
, mLastVisibleItemPosition
, dx
, dy);
} else if (layoutManager instanceof StaggeredGridLayoutManager) {
layoutManagerType = LAYOUT_MANAGER_TYPE.STAGGERED_GRID;
StaggeredGridLayoutManager staggeredGridLayoutManager = (StaggeredGridLayoutManager) layoutManager;
int newSpanCount = staggeredGridLayoutManager.getSpanCount();
if (mLastPositions == null || newSpanCount != mLastPositions.length) {
mLastPositions = new int[newSpanCount];
}
if (mFirstPositions == null || newSpanCount != mFirstPositions.length) {
mFirstPositions = new int[newSpanCount];
}
//avoid crash of support-v7 original bug
try{
staggeredGridLayoutManager.findFirstVisibleItemPositions(mFirstPositions);
mFirstVisibleItemPosition = findMin(mFirstPositions);
staggeredGridLayoutManager.findLastVisibleItemPositions(mLastPositions);
mLastVisibleItemPosition = findMax(mLastPositions);
iOnLoadMoreListener.notifyAppearStateChange(
mFirstVisibleItemPosition
, mLastVisibleItemPosition
, dx
, dy);
}catch(Exception e){
e.printStackTrace();
WXLogUtils.e(e.toString());
}
} else {
throw new RuntimeException(
"Unsupported LayoutManager used. Valid ones are LinearLayoutManager, GridLayoutManager and StaggeredGridLayoutManager");
}
}
}
Example 18
| Source File: VerticalRecyclerView.java From YCShopDetailLayout with Apache License 2.0 | 4 votes |
|
@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
RecyclerView.LayoutManager layoutManager = getLayoutManager();
if (layoutManager != null) {
if (layoutManager instanceof GridLayoutManager) {
lastVisibleItemPosition = ((GridLayoutManager) layoutManager).findLastVisibleItemPosition();
firstVisibleItemPosition = ((GridLayoutManager) layoutManager).findFirstVisibleItemPosition();
} else if (layoutManager instanceof LinearLayoutManager) {
lastVisibleItemPosition = ((LinearLayoutManager) layoutManager).findLastVisibleItemPosition();
firstVisibleItemPosition = ((LinearLayoutManager) layoutManager).findFirstVisibleItemPosition();
} else if (layoutManager instanceof StaggeredGridLayoutManager) {
StaggeredGridLayoutManager staggeredGridLayoutManager = (StaggeredGridLayoutManager) layoutManager;
if (lastPositions == null) {
lastPositions = new int[staggeredGridLayoutManager.getSpanCount()];
firstPositions = new int[staggeredGridLayoutManager.getSpanCount()];
}
staggeredGridLayoutManager.findLastVisibleItemPositions(lastPositions);
staggeredGridLayoutManager.findFirstVisibleItemPositions(firstPositions);
lastVisibleItemPosition = findMax(lastPositions);
firstVisibleItemPosition = findMin(firstPositions);
}
} else {
throw new RuntimeException("Unsupported LayoutManager used. Valid ones are LinearLayoutManager, GridLayoutManager and StaggeredGridLayoutManager");
}
switch (ev.getAction()) {
case MotionEvent.ACTION_DOWN:
downX = ev.getX();
downY = ev.getY();
//如果滑动到了最底部，就允许继续向上滑动加载下一页，否者不允许
getParent().requestDisallowInterceptTouchEvent(true);
break;
case MotionEvent.ACTION_MOVE:
float dx = ev.getX() - downX;
float dy = ev.getY() - downY;
boolean allowParentTouchEvent;
if (Math.abs(dy) > Math.abs(dx)) {
if (dy > 0) {
//位于顶部时下拉，让父View消费事件
allowParentTouchEvent = isTop = firstVisibleItemPosition == 0 && getChildAt(0).getTop() >= 0;
} else {
//位于底部时上拉，让父View消费事件
int visibleItemCount = layoutManager.getChildCount();
int totalItemCount = layoutManager.getItemCount();
allowParentTouchEvent = isBottom = visibleItemCount > 0 && (lastVisibleItemPosition) >= totalItemCount - 1 && getChildAt(getChildCount() - 1).getBottom() <= getHeight();
}
} else {
//水平方向滑动
allowParentTouchEvent = true;
}
getParent().requestDisallowInterceptTouchEvent(!allowParentTouchEvent);
break;
default:
break;
}
return super.dispatchTouchEvent(ev);
}
Example 19
| Source File: EndlessRecyclerViewScrollListener.java From scallop with MIT License | 4 votes |
|
public EndlessRecyclerViewScrollListener(StaggeredGridLayoutManager layoutManager) {
this.mLayoutManager = layoutManager;
visibleThreshold = visibleThreshold * layoutManager.getSpanCount();
}
Example 20
| Source File: FamiliarRecyclerView.java From AndroidBase with Apache License 2.0 | 4 votes |
|
public int getLastVisiblePosition() {
LayoutManager layoutManager = getLayoutManager();
if (null == layoutManager)
return -1;
int curItemCount = (null != mReqAdapter ? mReqAdapter.getItemCount() - 1 : 0);
int ret = -1;
switch (mLayoutManagerType) {
case LAYOUT_MANAGER_TYPE_LINEAR:
ret = ((LinearLayoutManager) layoutManager).findLastCompletelyVisibleItemPosition() - getHeaderViewsCount();
if (ret > curItemCount) {
ret -= getFooterViewsCount();
}
break;
case LAYOUT_MANAGER_TYPE_GRID:
ret = ((GridLayoutManager) layoutManager).findLastCompletelyVisibleItemPosition() - getHeaderViewsCount();
if (ret > curItemCount) {
ret -= getFooterViewsCount();
}
break;
case LAYOUT_MANAGER_TYPE_STAGGERED_GRID:
StaggeredGridLayoutManager tempStaggeredGridLayoutManager = (StaggeredGridLayoutManager) layoutManager;
int[] lastVisibleItemPositions = new int[tempStaggeredGridLayoutManager.getSpanCount()];
tempStaggeredGridLayoutManager.findLastCompletelyVisibleItemPositions(lastVisibleItemPositions);
if (lastVisibleItemPositions.length > 0) {
int maxPos = lastVisibleItemPositions[0];
for (int curPos : lastVisibleItemPositions) {
if (curPos > maxPos)
maxPos = curPos;
}
ret = maxPos - getHeaderViewsCount();
if (ret > curItemCount) {
ret -= getFooterViewsCount();
}
}
break;
}
return ret < 0 ? (null != mReqAdapter ? mReqAdapter.getItemCount() - 1 : 0) : ret;
}
