scrollview嵌套recycleview冲突的问题3

这里都是看大神的文章然后自学的

原创博客：http://blog.csdn.net/u010623588/article/details/50262367

package com.yzkj.utils.ui; import android.support.v7.widget.RecyclerView; import android.support.v7.widget.StaggeredGridLayoutManager; import android.view.View; import android.view.ViewGroup; /** * 12 * @author Jack Tony * 13 * @brief 不规则排列（类似于瀑布流）的布局管理器 * 14 * @date 2015/4/6 * 15 */ public class ExStaggeredGridLayoutManager extends StaggeredGridLayoutManager { public ExStaggeredGridLayoutManager(int spanCount, int orientation) { super(spanCount, orientation); } // 尺寸的数组，[0]是宽，[1]是高 private int[] measuredDimension = new int[2]; // 用来比较同行/列那个item罪宽/高 private int[] dimension; @Override public void onMeasure(RecyclerView.Recycler recycler, RecyclerView.State state, int widthSpec, int heightSpec) { // 宽的mode+size final int widthMode = View.MeasureSpec.getMode(widthSpec); final int widthSize = View.MeasureSpec.getSize(widthSpec); // 高的mode + size final int heightMode = View.MeasureSpec.getMode(heightSpec); final int heightSize = View.MeasureSpec.getSize(heightSpec); // 自身宽高的初始值 int width = 0; int height = 0; // item的数目 int count = getItemCount(); // item的列数 int span = getSpanCount(); // 根据行数或列数来创建数组 dimension = new int[span]; for (int i = 0; i < count; i++) { measureScrapChild(recycler, i, View.MeasureSpec.makeMeasureSpec(i, View.MeasureSpec.UNSPECIFIED), View.MeasureSpec.makeMeasureSpec(i, View.MeasureSpec.UNSPECIFIED), measuredDimension); // 如果是竖直的列表，计算item的高，否则计算宽度 //Log.d("LISTENER", "position " + i + " height = " + measuredDimension[1]); if (getOrientation() == VERTICAL) { dimension[findMinIndex(dimension)] += measuredDimension[1]; } else { dimension[findMinIndex(dimension)] += measuredDimension[0]; } } if (getOrientation() == VERTICAL) { height = findMax(dimension); } else { width = findMax(dimension); } switch (widthMode) { // 当控件宽是match_parent时，宽度就是父控件的宽度 case View.MeasureSpec.EXACTLY: width = widthSize; break; case View.MeasureSpec.AT_MOST: break; case View.MeasureSpec.UNSPECIFIED: break; } switch (heightMode) { // 当控件高是match_parent时，高度就是父控件的高度 case View.MeasureSpec.EXACTLY: height = heightSize; break; case View.MeasureSpec.AT_MOST: break; case View.MeasureSpec.UNSPECIFIED: break; } // 设置测量尺寸 setMeasuredDimension(width, height); } private void measureScrapChild(RecyclerView.Recycler recycler, int position, int widthSpec, int heightSpec, int[] measuredDimension) { // 挨个遍历所有item if (position < getItemCount()) { try { View view = recycler.getViewForPosition(position);//fix 动态添加时报IndexOutOfBoundsException if (view != null) { RecyclerView.LayoutParams lp = (RecyclerView.LayoutParams) view.getLayoutParams(); int childWidthSpec = ViewGroup.getChildMeasureSpec(widthSpec, getPaddingLeft() + getPaddingRight(), lp.width); int childHeightSpec = ViewGroup.getChildMeasureSpec(heightSpec, getPaddingTop() + getPaddingBottom(), lp.height); // 子view进行测量，然后可以通过getMeasuredWidth()获得测量的宽，高类似 view.measure(childWidthSpec, childHeightSpec); // 将item的宽高放入数组中 measuredDimension[0] = view.getMeasuredWidth() + lp.leftMargin + lp.rightMargin; measuredDimension[1] = view.getMeasuredHeight() + lp.topMargin + lp.bottomMargin; recycler.recycleView(view); } } catch (Exception e) { e.printStackTrace(); } } } private int findMax(int[] array) { int max = array[0]; for (int value : array) { if (value > max) { max = value; } } return max; } /** * 129 * 得到最数组中最小元素的下标 * 130 * * 131 * @param array * 132 * @return * 133 */ private int findMinIndex(int[] array) { int index = 0; int min = array[0]; for (int i = 0; i < array.length; i++) { if (array[i] < min) { min = array[i]; index = i; } } return index; } } 用法： final FullyGridLayoutManager manager = new FullyGridLayoutManager(context.getActivity(), 3); 2 manager.setOrientation(GridLayoutManager.VERTICAL); 3 manager.setSmoothScrollbarEnabled(true); 4 viewHolder.recyclerView.setLayoutManager(manager);

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