Android list view inside a scroll view

Question

I have an android layout which has a scrollView with a number of elements with in it. At the bottom of the scrollView I have a listView which is then populated by an adapter.

The problem that I am experiencing, is that android is excluding the listView from the scrollView as the scrollView already has a scroll-able function. I want the listView to be as long as the content is and for the master scroll view to be scroll-able.

How can I achieve this behavior?

Here is my main layout:

<ScrollView
    android:id="@+id/scrollView1"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="2"
    android:fillViewport="true"
    android:gravity="top" >

    <LinearLayout
        android:id="@+id/foodItemActvity_linearLayout_fragments"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical" >
    </LinearLayout>

</ScrollView>

I then programmatically add my components to the linearlayour with the id: foodItemActvity_linearLayout_fragments. Below is one of the views that is loaded into that linearlayout. This is the one giving me trouble with the scrolls.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical" >

    <TextView
       android:id="@+id/fragment_dds_review_textView_label"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:text="Reviews:"
       android:textAppearance="?android:attr/textAppearanceMedium" />

   <ListView
       android:id="@+id/fragment_dds_review_listView"
       android:layout_width="match_parent"
       android:layout_height="wrap_content">
   </ListView>
</LinearLayout>

My adapter then fills up this list view.

Here is an image from the android hierarchy viewer when I click on the master scrollView:

As you can see, it is excluding the reviews listView.

I should be able to scroll the page down and see 8 reviews, but instead it only shows me those 3, and I can scroll on the tiny part where the reviews are. I want a global page scroll

Answer 1

The shortest & easiest solution for any ChildView to scroll inside a ScrollView. Anything like ListView, RecyclerView, etc. You do not have to do anything special in code.

Just replace ScrollView with androidx.core.widget.NestedScrollView in your current xml and then magic happens.

Below is a sample xml code :

<?xml version="1.0" encoding="utf-8"?>
<androidx.core.widget.NestedScrollView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <androidx.appcompat.widget.LinearLayoutCompat
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:padding="16dp"
        android:paddingBottom="20dp">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Recycler View inside a Scroll View"
            android:textColor="@color/black"
            android:textSize="@dimen/_20sp"
            android:textStyle="bold" />

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="8dp"
            android:text="Below is a Recycler View as an example."
            android:textSize="16sp" />

        <androidx.recyclerview.widget.RecyclerView
            android:id="@+id/recycler_view"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="8dp"
            app:layout_constraintTop_toBottomOf="@id/et_damaged_qty" />

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="8dp"
            android:text="This textview automatically goes below the Recycler View."
            android:textSize="16sp" />
    </androidx.appcompat.widget.LinearLayoutCompat>
</androidx.core.widget.NestedScrollView>

Now you can get rid of all the ugly hacks we did to get around this nested scrolling.

It's time to play. Hell Yeeeeeeeeeeeeeeeeeah!