Android - Nestedscrollview Which Contains Expandablelistview Doesn't Scroll When Expanded

Android - NestedScrollView which contains ExpandableListView doesn't scroll when expanded

You can use NonScrollExpandableListView you can achieve non-scroll property of any Lisview or GridView or ExpandableListView by overriding following method.

@Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    int heightMeasureSpec_custom = MeasureSpec.makeMeasureSpec(
            Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
    super.onMeasure(widthMeasureSpec, heightMeasureSpec_custom);
    ViewGroup.LayoutParams params = getLayoutParams();
    params.height = getMeasuredHeight();
} 

So for using NonScrollExpandableListView you need to make one custom class.

public class NonScrollExpandableListView extends ExpandableListView {

    public NonScrollExpandableListView(Context context) {
        super(context);
    }

    public NonScrollExpandableListView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public NonScrollExpandableListView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @Override
    public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int heightMeasureSpec_custom = MeasureSpec.makeMeasureSpec(
                Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
        super.onMeasure(widthMeasureSpec, heightMeasureSpec_custom);
        ViewGroup.LayoutParams params = getLayoutParams();
        params.height = getMeasuredHeight();
    }
}

And use it like.

<com.example.extraclasses.NonScrollExpandableListView 

    android:layout_width="match_parent"
    android:layout_height="wrap_content" /> 

Happy coding.

ListView not expanding inside NestedScrollView

For the CoordinatorLayout to work properly you need the scrolling child to implement NestedScrollingChild. Such classes are NestedScrollView and RecyclerView.

To say it short - just use a RecyclerView for your scrolling content and it'll work correctly :)

P.S. As a side note, I don't see a reason why you'd use a ListView anymore. I know it's a habit and it's easier to setup (because you've done it many times), but using a RecyclerView is the recommended way anyways.

Scroll View inside xml Contains 2 expandablelistview doesn't scroll

Try using NestedScrollView instead of ScrollView. Although it's always recommended that you should use a single ListView or RecyclerView with different view types.

NestedScrollView is just like ScrollView, but it supports acting as
both a nested scrolling parent and child on both new and old versions
of Android. Nested scrolling is enabled by default.

Android: Scroll whole fragment with ListView inside

Alright, after combining multiple answers, I have the solution that I needed.

First

I needed to use a NestedScrollView instead of a regular ScrollView.

It solves the conflict between the two scroll containers (ScrollView and ListView).

Reference: Android: ScrollView vs NestedScrollView

NOTE: My list content is dynamic, so it can be too short to fill the remaining space. I had to set android:fillViewport="true" on the NestedScrollView. If the list is longer than the remaining space, it will not cause any trouble.

layout.xml

<?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"
    android:fillViewport="true">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <androidx.cardview.widget.CardView
            android:id="@+id/card1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">
        <!-- NOTE: constraints properties are missing from here for easier reading -->

            <!-- card content here -->

        </androidx.cardview.widget.CardView>

        <androidx.cardview.widget.CardView
            android:id="@+id/card2"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">
        <!-- NOTE: constraints properties are missing from here for easier reading -->

            <ListView
                android:id="@+id/list"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" />
            <!-- NOTE: this will change in step 3 -->

        </androidx.cardview.widget.CardView>

    </androidx.constraintlayout.widget.ConstraintLayout>

</androidx.core.widget.NestedScrollView>

Second

Following the steps above will make the ListView collapse to the height of its first item. To solve this, I needed to create a subclass from ListView and override its onMeasure() method, so it can calculate the proper height at runtime.

Reference: Android - NestedScrollView which contains ExpandableListView doesn't scroll when expanded

NonScrollListView.java

package my.package.name

import ...

public class NonScrollListView extends ListView {
    
    // NOTE: right click -> create constructors matching super

    @Override
    public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int heightMeasureSpec_custom = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
        super.onMeasure(widthMeasureSpec, heightMeasureSpec_custom);
        ViewGroup.LayoutParams params = getLayoutParams();
        params.height = getMeasuredHeight();
    }
}

Third

I needed to use my custom View instead of the regular ListView in my layout XML.

layout.xml excerpt

<my.package.name.NonScrollListView
    android:id="@+id/list"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />

This way I managed to make it work. Both cards move together on scroll, even if I tap the ListView area.

I don't know whether it causes performance issues with really long lists, because mine contains a few dozen items at most, but I have no problem on a low end Galaxy A20e.

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