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I am using CoordinatorLayout as my root View in activity.xml. In that xml , I am using NestedScrollView with appbar_scrolling_view_behavior enabled. But the content inside the NestedScrollView is wrapping the height instead of Matching the Parent.
Here is my layout xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
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"
android:background="@android:color/white">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_scrollFlags="scroll|enterAlways|snap">
</android.support.v7.widget.Toolbar>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ProgressBar
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/content"
android:padding="20dp"
android:visibility="gone"/>
</RelativeLayout>
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>
Here is the layout preview 
778
Add the NestedScrollView and inside NestedScrollView add a LinearLayout and inside LinearLayout add two TextView to display the strings which are created inside the strings.xml file and one Button between the TextView. Here is the code for the activity_main.xml file. One can add as many views inside the NestedScrollView’s LinearLayout
Last Updated : 18 Feb, 2021 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. It is enabled by default. NestedScrollView is used when there is a need for a scrolling view inside another scrolling view.
As NextedScrollView won't let recycle the items of RecyclerView & loads all the items in one shot, pull-up refresh won't work. We need to manually/listen-to monitor the NestedScrollView's scrolling event & do the load-more-items thing in child's RecyclerView.
If the linearlayout has a height of wrap_content then the height is not related to the height of the screen and the scrollview will be able to scroll through it. Just remember that a scrollview can only have 1 direct child, and that child needs android:layout_height="wrap_content"
just add in NestedScrollView
android:fillViewport="true"
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