ScrollView 嵌套ListView 滑动冲突，与显示不全

import android.content.Context;
import android.util.AttributeSet;
import android.widget.ListView;

/**
 *
 * @author jiarh
 *2014-8-14
 */
public class UserListView extends ListView {
    public UserListView(Context context) {
        super(context);
}

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

public UserListView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
}

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
                        MeasureSpec.AT_MOST);

        super.onMeasure(widthMeasureSpec, expandSpec);
}

}

ScrollView 嵌套ListView 滑动冲突，与显示不全