在项目中，我们常常会遇到一个ScrollView里面会嵌套ListView的情况，但往往你会发现，ListView和ScrollView的滚动时间会有冲突问题，造成ListView不能完全显示。虽然网上有给出解决方案，但事实上并不好用，并不完美。

public void setListViewHeightBasedOnChildren(ListView listView) {

// 获取ListView对应的Adapter

ListAdapter listAdapter = listView.getAdapter();

if (listAdapter == null) {

return;

}

int totalHeight = 0;

for (int i = 0; i < listAdapter.getCount(); i++) { // listAdapter.getCount()返回数据项的数目

View listItem = listAdapter.getView(i, null, listView);

listItem.measure(0, 0); // 计算子项View 的宽高

totalHeight += listItem.getMeasuredHeight(); // 统计所有子项的总高度

}

ViewGroup.LayoutParams params = listView.getLayoutParams();

params.height = totalHeight
    + (listView.getDividerHeight() * (listAdapter.getCount() - 1));

// listView.getDividerHeight()获取子项间分隔符占用的高度

// params.height最后得到整个ListView完整显示需要的高度

listView.setLayoutParams(params);

}

因此，为了彻底解决问题，就需要我们另辟途径了，我们使用 LinearLayout 绑定 Adapter的方法来代替ListView

将 adapter 里面的 view 全部加入 LinearLayout 并设置回调监听，添加DataSetObserver监听adapter 的改变。

public class LinearLayoutForListView extends LinearLayout {    private Adapter mAdapter;    private OnItemClickListener  mOnItemClickListener;    private SparseArray<View> mViewHolders;    private AdapterDataSetObserver mDataSetObserver;

    public OnItemClickListener getOnItemClickListener() {        return mOnItemClickListener;    }    public void setOnItemClickListener(OnItemClickListener onItemClickListener) {        mOnItemClickListener = onItemClickListener;    }

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

    public LinearLayoutForListView(Context context, AttributeSet attrs) {        super(context, attrs);    }

    public LinearLayoutForListView(Context context, AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);    }

    public void setAdapter(Adapter adapter) {        this.mAdapter = adapter;        bindLinearLayout();    }    /**  绑定布局 */    private void bindLinearLayout() {        if (mAdapter == null) {            return;        }        setOrientation(LinearLayout.VERTICAL);        int count = mAdapter.getCount();        this.removeAllViews();        mViewHolders = new SparseArray<View>(count);        for (int i = 0; i < count; i++) {            final View v = mAdapter.getView(i, null, null);            final int tmp = i;            final Object obj = mAdapter.getItem(i);            mViewHolders.put(i,v);            // view 点击事件触发时回调我们自己的接口            v.setOnClickListener(new View.OnClickListener() {

                @Override                public void onClick(View v) {                    if (mOnItemClickListener != null) {                        mOnItemClickListener.onItemClicked(v, obj, tmp);                    }                }            });            addView(v);        }    }

    /**     *     * 回调接口     */    public interface OnItemClickListener {        /**         * @param v  点击的 view         * @param obj  点击的 view 所绑定的对象         * @param position  点击位置的 index         */        public void onItemClicked(View v, Object obj, int position);    }

    @Override    protected void onAttachedToWindow() {        super.onAttachedToWindow();        if(mAdapter != null && mDataSetObserver == null){            mDataSetObserver = new AdapterDataSetObserver();            mAdapter.registerDataSetObserver(mDataSetObserver);        }    }

    @Override    protected void onDetachedFromWindow() {        super.onDetachedFromWindow();        if(mAdapter != null && mDataSetObserver != null){            mAdapter.unregisterDataSetObserver(mDataSetObserver);        }    }

    private class AdapterDataSetObserver extends DataSetObserver {        @Override        public void onChanged() {            if(mAdapter!=null){                final int count = mAdapter.getCount();                for (int i = 0; i < count; i++){                    mAdapter.getView(i,mViewHolders.get(i,null),null);                }                requestLayout();            }        }    }}

调用

list.setAdapter(madapter);list.setOnItemClickListener(new LinearLayoutForListView.OnItemClickListener() {    @Override    public void onItemClicked(View v, Object obj, int position) {

    }});