activity_detail.xml

<?xml version="1.0" encoding="utf-8"?>

<android.support.v4.widget.NestedScrollView 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:id="@+id/scrollView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.sylvain.popular_movies_stage_1.DetailActivity">

    <android.support.constraint.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <ImageView
            android:id="@+id/imgv_poster"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            android:layout_marginTop="16dp"
            android:contentDescription="@string/content_description"
            app:layout_constraintHorizontal_weight="1"
            app:layout_constraintLeft_toRightOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintVertical_weight="1" />

        <TextView
            android:id="@+id/tv_title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            android:layout_marginTop="16dp"
            android:text="@string/detail_title"
            app:layout_constraintLeft_toRightOf="@+id/imgv_poster"
            app:layout_constraintTop_toTopOf="parent" />

        <TextView
            android:id="@+id/tv_title_value"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            android:layout_marginTop="16dp"
            app:layout_constraintLeft_toRightOf="@id/tv_title"
            app:layout_constraintTop_toTopOf="parent" />

        <TextView
            android:id="@+id/tv_original_title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            android:layout_marginTop="16dp"
            android:text="@string/detail_original_title"
            app:layout_constraintLeft_toRightOf="@id/imgv_poster"
            app:layout_constraintTop_toBottomOf="@id/tv_title" />

        <TextView
            android:id="@+id/tv_original_title_value"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            android:layout_marginTop="16dp"
            app:layout_constraintLeft_toRightOf="@id/tv_original_title"
            app:layout_constraintTop_toBottomOf="@id/tv_title_value" />

        <TextView
            android:id="@+id/tv_release_date"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            android:layout_marginTop="16dp"
            android:text="@string/detail_release_date"
            app:layout_constraintLeft_toRightOf="@id/imgv_poster"
            app:layout_constraintTop_toBottomOf="@id/tv_original_title" />

        <TextView
            android:id="@+id/tv_release_date_value"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            android:layout_marginTop="16dp"
            app:layout_constraintLeft_toRightOf="@id/tv_release_date"
            app:layout_constraintTop_toBottomOf="@id/tv_original_title_value" />

        <TextView
            android:id="@+id/tv_vote_average"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            android:layout_marginTop="16dp"
            android:text="@string/detail_average_note"
            app:layout_constraintLeft_toRightOf="@id/imgv_poster"
            app:layout_constraintTop_toBottomOf="@id/tv_release_date" />

        <TextView
            android:id="@+id/tv_vote_average_value"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            android:layout_marginTop="16dp"
            app:layout_constraintLeft_toRightOf="@id/tv_vote_average"
            app:layout_constraintTop_toBottomOf="@id/tv_release_date_value" />

        <TextView
            android:id="@+id/tv_overview"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            android:layout_marginTop="16dp"
            android:text="@string/detail_overview"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/imgv_poster" />

        <TextView
            android:id="@+id/tv_overview_value"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="16dp"
            app:layout_constraintTop_toBottomOf="@id/tv_overview" />


        <android.support.v7.widget.RecyclerView
            android:id="@+id/rv_trailers"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="16dp"
            android:nestedScrollingEnabled="true"
            app:layout_constraintTop_toBottomOf="@id/tv_overview_value" />

        <android.support.v7.widget.RecyclerView
            android:id="@+id/rv_reviews"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="16dp"
            android:nestedScrollingEnabled="true"
            app:layout_constraintTop_toBottomOf="@id/rv_trailers" />


        <ImageButton
            android:id="@+id/btn_favorite"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginRight="16dp"
            android:layout_marginTop="16dp"
            android:background="#FFFFFF"
            android:onClick="addToFavorite"
            android:src="@drawable/ic_favorite_border_black_24dp"
            app:layout_constraintRight_toRightOf="parent"
            app:layout_constraintTop_toTopOf="parent" />
    </android.support.constraint.ConstraintLayout>
</android.support.v4.widget.NestedScrollView>