本文整理汇总了Java中android.support.v7.widget.LinearLayoutManager.findViewByPosition方法的典型用法代码示例。如果您正苦于以下问题：Java LinearLayoutManager.findViewByPosition方法的具体用法？Java LinearLayoutManager.findViewByPosition怎么用？Java LinearLayoutManager.findViewByPosition使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类android.support.v7.widget.LinearLayoutManager的用法示例。
在下文中一共展示了LinearLayoutManager.findViewByPosition方法的8个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: checkRecyclerView
import android.support.v7.widget.LinearLayoutManager; //导入方法依赖的package包/类
private static boolean checkRecyclerView(RecyclerView recyclerView) {
RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
if (layoutManager instanceof LinearLayoutManager) {
LinearLayoutManager linearLayoutManager = (LinearLayoutManager) layoutManager;
if (linearLayoutManager.getItemCount() == 0) {
return true;
}
int firstVisiblePosition = linearLayoutManager.findFirstVisibleItemPosition();
if (firstVisiblePosition == 0) {
View firstVisibleView = linearLayoutManager.findViewByPosition(firstVisiblePosition);
int top = firstVisibleView.getTop();
return top >= 0;
} else {
return false;
}
}
return false;
}
示例2: calculateSnapDistance
import android.support.v7.widget.LinearLayoutManager; //导入方法依赖的package包/类
/**
* Calculates the distance between the RecyclerView's anchor, either the start, center or end,
* and the View which is closest to the anchor.
*
* @return The distance between RecyclerView anchor and View closest to anchor
*/
private int calculateSnapDistance() {
LinearLayoutManager linearLayoutManager = (LinearLayoutManager) getLayoutManager();
int parentAnchor = getParentAnchor(orientation, anchor);
int lastVisibleItemPosition = linearLayoutManager.findLastVisibleItemPosition();
int firstVisibleItemPosition = linearLayoutManager.findFirstVisibleItemPosition();
View currentViewClosestToAnchor = linearLayoutManager.findViewByPosition(firstVisibleItemPosition);
int currentViewClosestToAnchorDistance = parentAnchor - getViewAnchor(currentViewClosestToAnchor, orientation, anchor);
for(int i = firstVisibleItemPosition + 1; i <= lastVisibleItemPosition; i++) {
View view = linearLayoutManager.findViewByPosition(i);
int distanceToAnchor = parentAnchor - getViewAnchor(view, orientation, anchor);
if (Math.abs(distanceToAnchor) < Math.abs(currentViewClosestToAnchorDistance)) {
currentViewClosestToAnchorDistance = distanceToAnchor;
}
}
return currentViewClosestToAnchorDistance;
}
示例3: onDraw
import android.support.v7.widget.LinearLayoutManager; //导入方法依赖的package包/类
@Override
public void onDraw(Canvas c, RecyclerView parent, RecyclerView.State state) {
final RecyclerView.LayoutManager manager = parent.getLayoutManager();
if (manager instanceof StaggeredGridLayoutManager) {
return;
}
//线性布局
final LinearLayoutManager layoutManager = (LinearLayoutManager) manager;
final int firstItem = layoutManager.findFirstVisibleItemPosition();
for (int i = 0; i < layoutManager.getChildCount(); i++) {
final int viewAdapterPosition = firstItem + i;
final View view = layoutManager.findViewByPosition(viewAdapterPosition);
if (view != null) {
mItemDecorationCallback.draw(c, mTextPaint, view,
mItemDecorationCallback.getItemOffsets(layoutManager, viewAdapterPosition),
layoutManager.getItemCount(), viewAdapterPosition);
}
}
}
示例4: offset
import android.support.v7.widget.LinearLayoutManager; //导入方法依赖的package包/类
@Override
public Varargs offset(U view, Varargs varargs) {
if (varargs.narg() > 1) {
return setScrollXY(view, varargs);
} else {
LinearLayoutManager layoutManager = (LinearLayoutManager) view.getLVRecyclerView().getLayoutManager();
int position = layoutManager.findFirstVisibleItemPosition();
View firstVisiableChildView = layoutManager.findViewByPosition(position);
int itemHeight = firstVisiableChildView.getHeight();
int dy = (position) * itemHeight - firstVisiableChildView.getTop();
return varargsOf(valueOf(0), valueOf(DimenUtil.pxToDpi(dy)));
}
}
示例5: findRealFirstVisibleItemPosition
import android.support.v7.widget.LinearLayoutManager; //导入方法依赖的package包/类
public int findRealFirstVisibleItemPosition(int pos) {
View view;
final LinearLayoutManager linearLayoutManager =
(LinearLayoutManager) mRecyclerView.getLayoutManager();
while (pos > 0) {
view = linearLayoutManager.findViewByPosition(pos - 1);
if (view == null) {
break;
}
pos = pos - 1;
}
return pos;
}
示例6: scrollRvDate
import android.support.v7.widget.LinearLayoutManager; //导入方法依赖的package包/类
public void scrollRvDate(int position){
if (position > 1) {
LinearLayoutManager layoutManager = (LinearLayoutManager) rv_date.getLayoutManager();
View view = layoutManager.findViewByPosition(position);
int itemWidth = view.getWidth();
int left = view.getLeft();
rv_date.smoothScrollBy(left - (int) (itemWidth * 1.5) + PixelUtil.dp2px(context, 30), 0);
}
}
示例7: onDraw
import android.support.v7.widget.LinearLayoutManager; //导入方法依赖的package包/类
@Override
public void onDraw(Canvas c, RecyclerView parent, RecyclerView.State state) {
super.onDraw(c, parent, state);
final RecyclerView.LayoutManager manager = parent.getLayoutManager();
int itemCount = manager.getItemCount();
if (itemCount < 1) {
//如果只有1个item, 直接返回;
return;
}
if (manager instanceof GridLayoutManager) {
//网格布局
drawGrid(c, manager);
} else if (manager instanceof StaggeredGridLayoutManager) {
//暂不支持...
} else {
//线性布局
final LinearLayoutManager layoutManager = (LinearLayoutManager) manager;
final int firstItem = layoutManager.findFirstVisibleItemPosition();
for (int i = 0; i < layoutManager.getChildCount(); i++) {
int adapterPosition = firstItem + i;
final View view = layoutManager.findViewByPosition(adapterPosition);
if (itemCount == 1 || adapterPosition == itemCount - 1) {
//第一个, 或者最后一个
if (!drawLastHLine && !drawLastVLine) {
continue;
}
}
if (view != null) {
if (layoutManager.getOrientation() == LinearLayoutManager.HORIZONTAL) {
//水平
drawDrawableV(c, view);
} else {
//垂直
drawDrawableH(c, view);
}
}
}
}
}
示例8: calculateSnapViewPosition
import android.support.v7.widget.LinearLayoutManager; //导入方法依赖的package包/类
/**
* Finds the position of the View which is closest to the RecyclerView's anchor, either the
* RecyclerView's start, center or end
*
* @return The position of the View closest the to RecyclerView's anchor
*/
private int calculateSnapViewPosition() {
LinearLayoutManager linearLayoutManager = (LinearLayoutManager) getLayoutManager();
int parentAnchor = getParentAnchor(orientation, anchor);
int lastVisibleItemPosition = linearLayoutManager.findLastVisibleItemPosition();
int firstVisibleItemPosition = linearLayoutManager.findFirstVisibleItemPosition();
View currentViewClosestToAnchor = linearLayoutManager.findViewByPosition(firstVisibleItemPosition);
int currentViewClosestToAnchorDistance = parentAnchor - getViewAnchor(currentViewClosestToAnchor, orientation, anchor);
int currentViewClosestToAnchorPosition = firstVisibleItemPosition;
for(int i = firstVisibleItemPosition + 1; i <= lastVisibleItemPosition; i++) {
View view = linearLayoutManager.findViewByPosition(i);
int distanceToCenter = parentAnchor - getViewAnchor(view, orientation, anchor);
if (Math.abs(distanceToCenter) < Math.abs(currentViewClosestToAnchorDistance)) {
currentViewClosestToAnchorPosition = i;
currentViewClosestToAnchorDistance = distanceToCenter;
}
}
return currentViewClosestToAnchorPosition;
}