RecyclerView和ScrollView嵌套使用

在项目中我们经常碰到Recyclerview嵌套Scrollview，两者会产生滑动冲突，导致卡、滑动失效等现象。为此笔者总结了2种方法：

第一种.

recyclerview.setNestedScrollingEnabled(false);

第二种.

通过设置layoutmanager：

    idRvFmCourse.setLayoutManager();

1.LinearLayoutManager和ScrollView嵌套

public class FullyLinearLayoutManager extends LinearLayoutManager {  

private static final String TAG = FullyLinearLayoutManager.class.getSimpleName();  

public FullyLinearLayoutManager(Context context) {  
    super(context);  
}  

public FullyLinearLayoutManager(Context context, int orientation, boolean reverseLayout) {  
    super(context, orientation, reverseLayout);  
}  

private int[] mMeasuredDimension = new int[2];  

@Override  
public void onMeasure(RecyclerView.Recycler recycler, RecyclerView.State state,  
                      int widthSpec, int heightSpec) {  

    final int widthMode = View.MeasureSpec.getMode(widthSpec);  
    final int heightMode = View.MeasureSpec.getMode(heightSpec);  
    final int widthSize = View.MeasureSpec.getSize(widthSpec);  
    final int heightSize = View.MeasureSpec.getSize(heightSpec);  

    Log.i(TAG, "onMeasure called. \nwidthMode " + widthMode  
            + " \nheightMode " + heightSpec  
            + " \nwidthSize " + widthSize  
            + " \nheightSize " + heightSize  
            + " \ngetItemCount() " + getItemCount());  

    int width = 0;  
    int height = 0;  
    for (int i = 0; i < getItemCount(); i++) {  
        measureScrapChild(recycler, i,  
                View.MeasureSpec.makeMeasureSpec(i, View.MeasureSpec.UNSPECIFIED),  
                View.MeasureSpec.makeMeasureSpec(i, View.MeasureSpec.UNSPECIFIED),  
                mMeasuredDimension);  

        if (getOrientation() == HORIZONTAL) {  
            width = width + mMeasuredDimension[0];  
            if (i == 0) {  
                height = mMeasuredDimension[1];  
            }  
        } else {  
            height = height + mMeasuredDimension[1];  
            if (i == 0) {  
                width = mMeasuredDimension[0];  
            }  
        }  
    }  
    switch (widthMode) {  
        case View.MeasureSpec.EXACTLY:  
            width = widthSize;  
        case View.MeasureSpec.AT_MOST:  
        case View.MeasureSpec.UNSPECIFIED:  
    }  

    switch (heightMode) {  
        case View.MeasureSpec.EXACTLY:  
            height = heightSize;  
        case View.MeasureSpec.AT_MOST:  
        case View.MeasureSpec.UNSPECIFIED:  
    }  

    setMeasuredDimension(width, height);  
}  

private void measureScrapChild(RecyclerView.Recycler recycler, int position, int widthSpec,  
                               int heightSpec, int[] measuredDimension) {  
    try {  
        View view = recycler.getViewForPosition(0);//fix 动态添加时报IndexOutOfBoundsException  

        if (view != null) {  
            RecyclerView.LayoutParams p = (RecyclerView.LayoutParams) view.getLayoutParams();  

            int childWidthSpec = ViewGroup.getChildMeasureSpec(widthSpec,  
                    getPaddingLeft() + getPaddingRight(), p.width);  

            int childHeightSpec = ViewGroup.getChildMeasureSpec(heightSpec,  
                    getPaddingTop() + getPaddingBottom(), p.height);  

            view.measure(childWidthSpec, childHeightSpec);  
            measuredDimension[0] = view.getMeasuredWidth() + p.leftMargin + p.rightMargin;  
            measuredDimension[1] = view.getMeasuredHeight() + p.bottomMargin + p.topMargin;  
            recycler.recycleView(view);  
        }  
    } catch (Exception e) {  
        e.printStackTrace();  
    } finally {  
    }  
}  
}

2.GridLayoutManager和ScrollView进行嵌套

public class FullyGridLayoutManager extends GridLayoutManager {  
public FullyGridLayoutManager(Context context, int spanCount) {  
    super(context, spanCount);  
}  

public FullyGridLayoutManager(Context context, int spanCount, int orientation, boolean reverseLayout) {  
    super(context, spanCount, orientation, reverseLayout);  
}  

private int[] mMeasuredDimension = new int[2];  

@Override  
public void onMeasure(RecyclerView.Recycler recycler, RecyclerView.State state, int widthSpec, int heightSpec) {  
    final int widthMode = View.MeasureSpec.getMode(widthSpec);  
    final int heightMode = View.MeasureSpec.getMode(heightSpec);  
    final int widthSize = View.MeasureSpec.getSize(widthSpec);  
    final int heightSize = View.MeasureSpec.getSize(heightSpec);  

    int width = 0;  
    int height = 0;  
    int count = getItemCount();  
    int span = getSpanCount();  
    for (int i = 0; i < count; i++) {  
        measureScrapChild(recycler, i,  
                View.MeasureSpec.makeMeasureSpec(i, View.MeasureSpec.UNSPECIFIED),  
                View.MeasureSpec.makeMeasureSpec(i, View.MeasureSpec.UNSPECIFIED),  
                mMeasuredDimension);  

        if (getOrientation() == HORIZONTAL) {  
            if (i % span == 0) {  
                width = width + mMeasuredDimension[0];  
            }  
            if (i == 0) {  
                height = mMeasuredDimension[1];  
            }  
        } else {  
            if (i % span == 0) {  
                height = height + mMeasuredDimension[1];  
            }  
            if (i == 0) {  
                width = mMeasuredDimension[0];  
            }  
        }  
    }  

    switch (widthMode) {  
        case View.MeasureSpec.EXACTLY:  
            width = widthSize;  
        case View.MeasureSpec.AT_MOST:  
        case View.MeasureSpec.UNSPECIFIED:  
    }  

    switch (heightMode) {  
        case View.MeasureSpec.EXACTLY:  
            height = heightSize;  
        case View.MeasureSpec.AT_MOST:  
        case View.MeasureSpec.UNSPECIFIED:  
    }  

    setMeasuredDimension(width, height);  
}  

private void measureScrapChild(RecyclerView.Recycler recycler, int position, int widthSpec,  
                               int heightSpec, int[] measuredDimension) {  
    if (position < getItemCount()) {  
        try {  
            View view = recycler.getViewForPosition(0);//fix 动态添加时报IndexOutOfBoundsException  
            if (view != null) {  
                RecyclerView.LayoutParams p = (RecyclerView.LayoutParams) view.getLayoutParams();  
                int childWidthSpec = ViewGroup.getChildMeasureSpec(widthSpec,  
                        getPaddingLeft() + getPaddingRight(), p.width);  
                int childHeightSpec = ViewGroup.getChildMeasureSpec(heightSpec,  
                        getPaddingTop() + getPaddingBottom(), p.height);  
                view.measure(childWidthSpec, childHeightSpec);  
                measuredDimension[0] = view.getMeasuredWidth() + p.leftMargin + p.rightMargin;  
                measuredDimension[1] = view.getMeasuredHeight() + p.bottomMargin + p.topMargin;  
                recycler.recycleView(view);  
            }  
        } catch (Exception e) {  
            e.printStackTrace();  
        }  
    }  
}  
}

3.StaggeredGridLayoutManager和ScrollView进行嵌套

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;  
}  

/** 
 * 得到最数组中最小元素的下标 
 * 
 * @param array 
 * @return 
 */  
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;  
}   
}


/**
 * 屏蔽 滑动事件
 * Created by fc on 2015/7/16.
 */
public class MyScrollview extends ScrollView {
private int downX;
private int downY;
private int mTouchSlop;

public MyScrollview(Context context) {
    super(context);
    mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop();
}

public MyScrollview(Context context, AttributeSet attrs) {
    super(context, attrs);
    mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop();
}

public MyScrollview(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
    mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop();
}

@Override
public boolean onInterceptTouchEvent(MotionEvent e) {
    int action = e.getAction();
    switch (action) {
        case MotionEvent.ACTION_DOWN:
            downX = (int) e.getRawX();
            downY = (int) e.getRawY();
            break;
        case MotionEvent.ACTION_MOVE:
            int moveY = (int) e.getRawY();
            if (Math.abs(moveY - downY) > mTouchSlop) {
                return true;
            }
    }
    return super.onInterceptTouchEvent(e);
}
}

最后编辑于：2017.12.07 07:53:35

人面猴
序言：七十年代末，一起剥皮案震惊了整个滨河市，随后出现的几起案子，更是在滨河造成了极大的恐慌，老刑警刘岩，带你破解...
沈念sama阅读 204,793评论 6赞 478
死咒
序言：滨河连续发生了三起死亡事件，死亡现场离奇诡异，居然都是意外死亡，警方通过查阅死者的电脑和手机，发现死者居然都...
沈念sama阅读 87,567评论 2赞 381
救了他两次的神仙让他今天三更去死
文/潘晓璐我一进店门，熙熙楼的掌柜王于贵愁眉苦脸地迎上来，“玉大人，你说我怎么就摊上这事。” “怎么了？”我有些...
开封第一讲书人阅读 151,342评论 0赞 338
道士缉凶录：失踪的卖姜人
文/不坏的土叔我叫张陵，是天一观的道长。经常有香客问我，道长，这世上最难降的妖魔是什么？我笑而不...
开封第一讲书人阅读 54,825评论 1赞 277
港岛之恋（遗憾婚礼）
正文为了忘掉前任，我火速办了婚礼，结果婚礼上，老公的妹妹穿的比我还像新娘。我一直安慰自己，他们只是感情好，可当我...
茶点故事阅读 63,814评论 5赞 368
恶毒庶女顶嫁案：这布局不是一般人想出来的
文/花漫我一把揭开白布。她就那样静静地躺着，像睡着了一般。火红的嫁衣衬着肌肤如雪。梳的纹丝不乱的头发上，一...
开封第一讲书人阅读 48,680评论 1赞 281
城市分裂传说
那天，我揣着相机与录音，去河边找鬼。笑死，一个胖子当着我的面吹牛，可吹牛的内容都是我干的。我是一名探鬼主播，决...
沈念sama阅读 38,033评论 3赞 399
双鸳鸯连环套：你想象不到人心有多黑
文/苍兰香墨我猛地睁开眼，长吁一口气：“原来是场噩梦啊……” “哼！你这毒妇竟也来了？” 一声冷哼从身侧响起，我...
开封第一讲书人阅读 36,687评论 0赞 258
万荣杀人案实录
序言：老挝万荣一对情侣失踪，失踪者是张志新（化名）和其女友刘颖，没想到半个月后，有当地人在树林里发现了一具尸体，经...
沈念sama阅读 42,175评论 1赞 300
护林员之死
正文独居荒郊野岭守林人离奇死亡，尸身上长有42处带血的脓包…… 初始之章·张勋以下内容为张勋视角年9月15日...
茶点故事阅读 35,668评论 2赞 321
白月光启示录
正文我和宋清朗相恋三年，在试婚纱的时候发现自己被绿了。大学时的朋友给我发了我未婚夫和他白月光在一起吃饭的照片。...
茶点故事阅读 37,775评论 1赞 332
活死人
序言：一个原本活蹦乱跳的男人离奇死亡，死状恐怖，灵堂内的尸体忽然破棺而出，到底是诈尸还是另有隐情，我是刑警宁泽，带...
沈念sama阅读 33,419评论 4赞 321
日本核电站爆炸内幕
正文年R本政府宣布，位于F岛的核电站，受9级特大地震影响，放射性物质发生泄漏。R本人自食恶果不足惜，却给世界环境...
茶点故事阅读 39,020评论 3赞 307
男人毒药：我在死后第九天来索命
文/蒙蒙一、第九天我趴在偏房一处隐蔽的房顶上张望。院中可真热闹，春花似锦、人声如沸。这庄子的主人今日做“春日...
开封第一讲书人阅读 29,978评论 0赞 19
一桩弑父案，背后竟有这般阴谋
文/苍兰香墨我抬头看了看天上的太阳。三九已至，却和暖如春，着一层夹袄步出监牢的瞬间，已是汗流浃背。一阵脚步声响...
开封第一讲书人阅读 31,206评论 1赞 260
情欲美人皮
我被黑心中介骗来泰国打工，没想到刚下飞机就差点儿被人妖公主榨干…… 1. 我叫王不留，地道东北人。一个月前我还...
沈念sama阅读 45,092评论 2赞 351
代替公主和亲
正文我出身青楼，却偏偏与公主长得像，于是被迫代替她去往敌国和亲。传闻我的和亲对象是个残疾皇子，可洞房花烛夜当晚...
茶点故事阅读 42,510评论 2赞 343

RecyclerView和ScrollView嵌套使用

推荐阅读更多精彩内容