NestedScrollView与RecyclerView嵌套滑动

解决在RecyclerView加入android:nestedScrollingEnabled=”true”
或者是设置setNestedScrollingEnabled(false)

解决启动程序不在顶部：
在顶部布局加入
android:focusable=”true”
android:focusableInTouchMode=”true”

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.recyelerview.MainActivity">
    <android.support.v4.widget.NestedScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical">
            <TextView
                android:layout_width="match_parent"
                android:layout_height="200dp"
                android:text="哈哈哈"
                android:gravity="center"/>
               <android.support.v7.widget.RecyclerView
                   android:id="@+id/recyclerView"
                   android:layout_width="match_parent"
                   android:layout_height="match_parent"
                   android:nestedScrollingEnabled="true"/>
        </LinearLayout>
    </android.support.v4.widget.NestedScrollView>
</LinearLayout>