Scrollview inside constraint layout does not scroll to the bottom of the parent constraint

Question

I have a form which has around 12/13 fields. I used a Scrollview inside a constraint layout. Below is the hierarchy of the XML layout. The problem is, it doesn\

Answer 1

Two Steps

1. Keep layout height for scroll view zero
   android:layout_height="0dp"

2. Again for scroll view
   android:fillViewport="true"

Answer 2

Try adding bottom constraint to scrollview (eg: app:layout_constraintBottom_toBottomOf="parent") and change android:layout_height="wrap_content" to android:layout_height="0dp"

Answer 3

In my case NestedScrollView worked instead of ScrollView.

Following is the snippet of my working layout: Please make sure that you haven't make any childview height to match parent(0 dp) inside constrianlayout also for scroll view android:fillViewport="true;

Ask me if any doubt Occur.

<android.support.v4.widget.NestedScrollView
        android:id="@+id/scroll_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginTop="@dimen/_90sdp"
        android:fillViewport="true">

        <android.support.constraint.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:id="@+id/cvLayout"
            android:animateLayoutChanges="true">

Answer 4

In my case NestedScrollView worked instead of ScrollView. Following is the snippet of my working layout:

<android.support.constraint.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">

    <!-- Some Views Here -->

    <android.support.v4.widget.NestedScrollView
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:fillViewport="true"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/view">

        <android.support.constraint.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <!-- Some Views That can be Scrolled Here -->

        </android.support.constraint.ConstraintLayout>

    </android.support.v4.widget.NestedScrollView>

</android.support.constraint.ConstraintLayout>