I have a recyclerView inside my LinearLayout.
<ScrollView 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"
    android:id="@+id/book_detail_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context="com.example.BookDetailActivity">
    <LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:paddingBottom="@dimen/activity_vertical_margin"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:orientation="vertical">
        <ImageView
            android:layout_width="250dp"
            android:layout_height="270dp"
            android:id="@+id/book_image"
            android:layout_marginTop="@dimen/activity_vertical_margin"
            android:layout_gravity="center"
            android:src="@drawable/book_default"/>
        <View
            android:layout_width="match_parent"
            android:layout_height="1dip"
            android:layout_marginTop="@dimen/activity_vertical_margin"
            android:background="#EEEEEE"/>
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:id="@+id/book_authors"
            android:layout_marginTop="@dimen/activity_vertical_margin"
            android:fontFamily="sans-serif-condensed" />
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center">
            <RatingBar
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                style="?android:attr/ratingBarStyleSmall"
                android:max="5"
                android:id="@+id/book_rating"
                android:stepSize="0.5"
                android:paddingTop="10dp"
                android:isIndicator="true"
                android:progressTint="#FFA500"
                android:secondaryProgressTint="#D1D6D8"/>
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:paddingTop="10dp"
                android:paddingLeft="5dp"
                android:id="@+id/book_rating_text"
                android:fontFamily="sans-serif-condensed" />
        </LinearLayout>
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:id="@+id/book_reviews_text"
            android:textColor="@color/redColor"
            android:fontFamily="sans-serif-condensed" />
        <View
            android:layout_width="match_parent"
            android:layout_height="1dip"
            android:layout_marginTop="@dimen/activity_vertical_margin"
            android:background="#EEEEEE"/>
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:clickable="true"
            android:fadingEdge="vertical"
            android:fadingEdgeLength="20dp"
            android:paddingTop="@dimen/activity_vertical_margin"
            android:id="@+id/book_description"
            android:onClick="toggleText"
            android:ellipsize="end"
            android:maxLines="3" />
        <View
            android:layout_width="match_parent"
            android:layout_height="1dip"
            android:id="@+id/book_description_below_line"
            android:layout_marginTop="@dimen/activity_vertical_margin"
            android:background="#EEEEEE"/>
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textColor="@color/dark_translucent_black"
            android:textAlignment="center"
            android:textSize="15dp"
            android:layout_marginTop="@dimen/activity_vertical_margin"
            android:text="People near you who are willing to lend this book"/>
        <android.support.v7.widget.RecyclerView
            android:id="@+id/lender_recycler_view"
            android:layout_width="match_parent"
            android:layout_height="400dp"
            android:scrollbars="vertical" />
    </LinearLayout>
</ScrollView>
The problem is that when I inflate this recyclerView, the complete activity is not scrolling (Only the part of recycler view does). Moreover I have specify height of recyclerView otherwise I am not able to see it.
So my two problems are:
- How to give this RecyclerView hight dynamically (layout_height: wrap_contentisn't working)
- How to scroll the entire activity (and not just the recyclerView part) when content is more.
P.S I am new to Android, though I have implemented recyclerView earlier but in those cases there was only one element (one recyclerView inside a parent LinearLayout)
 
    