ScrollView 在 ConstraintLayout 和 viewPage 中不起作用

Question

I am working with constraint layout I am trying to use scrollview within it, Especially when keypad occurs on screen. When keypad appears alignment completely changes and scrollview doesn't appear

<?xml version="1.0" encoding="utf-8"?>
<ScrollView 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_height="match_parent"
    android:layout_width="match_parent"
    android:fillViewport="true"
    tools:context=".Activity.HomeActivity">
<androidx.constraintlayout.widget.ConstraintLayout 
    android:id="@+id/Constrain_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/bg"
    android:orientation="vertical"
    >

    <androidx.appcompat.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/toolbar_gradient"
        android:minHeight="?attr/actionBarSize"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />



    <Button
        android:id="@+id/button3"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:text="Button"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent" />

    <androidx.viewpager.widget.ViewPager
        android:id="@+id/pager"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintBottom_toTopOf="@+id/button3"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/tabLayout"
        app:layout_behavior="@string/appbar_scrolling_view_behavior"/>
</androidx.constraintlayout.widget.ConstraintLayout>

Answer 1

Use this android:windowSoftInputMode="adjustPan" in activity tag in manifest

Example:

 <activity
            android:name=".activities.MainActivity"
            android:windowSoftInputMode="adjustPan" />