ScrollView inside ViewPager inside NestedScrollView not scrolling

Question

I have an activity which contains a Nested ScrollView in it. Inside this NestedScrollView there is a ViewPager. Each Page has a view which contains a ScrollView. This innermost scrollview is not scrolling at all. How can I enable the scrolling behaviour in this innermost ScrollView

This is the xml of Activity

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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=".MainActivity">

    <androidx.core.widget.NestedScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fillViewport="true">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">

            <androidx.viewpager.widget.ViewPager
                android:id="@+id/pager"
                android:layout_width="match_parent"
                android:layout_height="300dp" />

            <ImageView
                android:layout_width="400dp"
                android:layout_height="400dp"
                android:layout_marginTop="10dp"
                android:src="@drawable/ic_launcher_background" />

            <ImageView
                android:layout_width="400dp"
                android:layout_height="400dp"
                android:layout_marginTop="10dp"
                android:src="@drawable/ic_launcher_background" />

            <ImageView
                android:layout_width="400dp"
                android:layout_height="400dp"
                android:layout_marginTop="10dp"
                android:src="@drawable/ic_launcher_background" />

            <ImageView
                android:layout_width="400dp"
                android:layout_height="400dp"
                android:layout_marginTop="10dp"
                android:src="@drawable/ic_launcher_background" />
        </LinearLayout>
    </androidx.core.widget.NestedScrollView>

</androidx.constraintlayout.widget.ConstraintLayout>

This is xml of view pager

    <?xml version="1.0" encoding="utf-8"?>
<androidx.core.widget.NestedScrollView 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fillViewport="true"
    android:orientation="vertical">
    <ImageView
        android:id="@+id/image"
        android:layout_width="match_parent"
        android:layout_height="800dp" />

</androidx.core.widget.NestedScrollView>

I don't get why you have a NestedScrollView wrapping your ViewPager? Since you have ScrollView on each view I don't think that's needed. And also would be nice to have some code. — ArbenMaloku
Because my view pager is a part of Activity and activity contains many small different kind of views and I need them to scroll as well along with view pager content — vs.thaakur

Tariqul Islam Tariqul Islam · Accepted Answer · 2019-10-16T13:16:38

Add android:fillViewport="true" in your NestedScrollView. I hope the problem will be solved

ScrollView inside ViewPager inside NestedScrollView not scrolling

3 Answers