scrollview嵌套recycleview冲突的问题3

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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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