ScrollView not scrolling when ScrollView as parent layout

Question

I have a RelativeLayout inside ScrollView. But ScrollView not scrolling when it as parent layout.

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:fillViewport="true"
android:layout_height="match_parent"

>

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <ImageView
        android:id="@+id/iv_about_background"
        android:layout_width="match_parent"
        android:layout_height="150dp"
        android:src="@drawable/stack" />

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/iv_about_background"
        android:paddingLeft="10dp"
        android:paddingRight="10dp"
       />
</RelativeLayout>
</ScrollView>

Edit: I removed rootView.setOnTouchListener from my fragment and ScrollView is working fine

Answer 1

Try with

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

>

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

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent">

                <ImageView
                    android:id="@+id/iv_about_background"
                    android:layout_width="match_parent"
                    android:layout_height="150dp"
                    android:src="@drawable/stack" />

                <TextView
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_below="@+id/iv_about_background"
                    android:paddingLeft="10dp"
                    android:paddingRight="10dp"
                   />
        </RelativeLayout>

    </LinearLayout>

</ScrollView>