RecyclerView中的NestedScrollView作为ViewHolder无法正常工作

Question

我想将NestedScrollView放在RecylerView内。我将NestedScrollView放在一个ViewHolder中.NestedScrollView无法正常工作。帮帮我。

<?xml version="1.0" encoding="utf-8"?>
        <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
            android:id="@+id/mainLayout"
            android:clickable="true"
            android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/white">

            <android.support.v7.widget.RecyclerView
                android:id="@+id/lstAddEditCustomObj"
                android:layout_width="match_parent"
                android:layout_height="match_parent">
            </android.support.v7.widget.RecyclerView>
        </RelativeLayout>

这是我的视图架布局

 <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="150dp"
            android:background="@drawable/gray_stroke"
            android:orientation="vertical">

            <android.support.v4.widget.NestedScrollView
                android:id="@+id/nestedScroll"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:fillViewport="true"
                android:scrollbars="none"
              app:layout_behavior="@string/appbar_scrolling_view_behavior">

                <LinearLayout
                    android:id="@+id/fromContactList"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:orientation="vertical">
                </LinearLayout>
            </android.support.v4.widget.NestedScrollView>
        </LinearLayout>