Develop Reference

how to scroll one mobile page at a time on a long text in Android ScrollView?

I try to scroll one whole screen size page in every mobile device on a long text within a TextView in a ScrollView but all I got is scrolling to the bottom of the whole Text which is like this:
binding.scrollView.post{
binding.scrollView.fullScroll(View.FOCUS_DOWN)
}
I want it scrolls page by page not the whole text. here is the XML code of the ScrollView:
<ScrollView
android:id="#+id/scroll_view"
android:layout_width="match_parent"
android:layout_height="0dp"
android:fillViewport="true"
android:paddingBottom="24dp"
android:background="#color/whitef5_background"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toTopOf="#id/holder_player_bar"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<com.makeramen.roundedimageview.RoundedImageView
android:id="#+id/img"
android:layout_width="match_parent"
android:layout_height="220dp"
android:layout_marginHorizontal="16dp"
android:scaleType="centerCrop"
android:layout_marginTop="24dp"
android:src="#drawable/placeholder"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:riv_corner_radius="8dp"/>
<TextView
android:id="#+id/txt_title"
style="#style/TextBold16Black2128"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColorLink="#color/app_orange"
android:layout_marginTop="12dp"
android:gravity="center"
android:layout_marginHorizontal="16dp"
android:text="Reading Title"
app:layout_constraintTop_toBottomOf="#id/img"/>
<TextView
android:id="#+id/txt_title_fa"
style="#style/TextMed14Gray8f"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_marginHorizontal="16dp"
android:text="مطلب ساختگی"
app:layout_constraintTop_toBottomOf="#id/txt_title"
android:layout_marginTop="12dp"/>
<View
android:id="#+id/div"
android:layout_width="0dp"
android:layout_height="1dp"
android:layout_marginTop="12dp"
android:layout_marginHorizontal="16dp"
android:background="#color/grayDBEC"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/txt_title_fa"/>
<TextView
android:id="#+id/txt"
style="#style/TextMed14Black2128"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginHorizontal="16dp"
android:text="#string/reading_test_speech"
app:layout_constraintTop_toBottomOf="#id/div"
android:layout_marginTop="24dp"/>
<Button
android:id="#+id/btn_test"
style="#style/ButtonMed14White"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginHorizontal="16dp"
android:layout_marginBottom="24dp"
android:background="#drawable/selector_orange_button"
android:text="#string/reading_go_to_questions_btn_text"
app:layout_constraintTop_toBottomOf="#id/txt"
android:layout_marginTop="24dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintVertical_bias="1.0" />
</androidx.constraintlayout.widget.ConstraintLayout>
</ScrollView>
if there's a method or if I need to change or note something please update me with it so I can have the right function. thank you.

Button not visible when keyboard is shown

I am trying to implement a functionality where the button below EditText moves up when the keyboard is shown, this is a login fragment and I would like to have this functionality similiar to what Instagram has. Right now, when keyboard is pressed, the EditText moves up but the button is hidden. I am attaching the xml below for the same.
<FrameLayout 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">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="150dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="120dp"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:padding="20dp">
<ImageButton
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_gravity="center"
android:scaleType="center"
android:src="#drawable/ic_back" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_gravity="bottom"
android:layout_marginBottom="20dp"
android:orientation="vertical" />
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/root_constraints"
android:layout_width="130dp"
android:layout_height="130dp"
android:layout_gravity="top|center"
android:layout_marginTop="20dp"
android:elevation="20dp"
>
<ImageView
android:id="#+id/std_imageView"
android:layout_width="100dp"
android:layout_height="100dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
</FrameLayout>
<androidx.appcompat.widget.AppCompatTextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="30dp"
android:layout_marginTop="144dp"
android:layout_marginEnd="30dp"
android:fontFamily="#font/montserrat_bold"
android:textColor="#0B3148"
android:textSize="48sp"
android:textStyle="bold"/>
<androidx.appcompat.widget.AppCompatTextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="30dp"
android:layout_marginEnd="30dp"
android:fontFamily="#font/sf_bold"
android:textColor="#0B3148"
android:textSize="14sp"
android:textStyle="bold"
/>
<androidx.appcompat.widget.AppCompatTextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="30dp"
android:layout_marginEnd="30dp"
android:fontFamily="#font/sf_regular"
android:textColor="#0B3148"
android:textSize="14sp" />
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<androidx.appcompat.widget.AppCompatEditText
android:layout_width="100dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginStart="30dp"
android:layout_marginTop="30dp"
android:layout_marginEnd="30dp"
android:fontFamily="#font/roboto_light"
android:hint=""
android:visibility="gone"
android:inputType="number"
android:paddingStart="16dp"
android:textSize="14sp"
android:paddingTop="11dp"
android:paddingEnd="0dp"
android:paddingBottom="10dp"
android:textColorHint="#color/color_text"
android:text=""
android:drawablePadding="8dp"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintStart_toStartOf="parent" />
<androidx.appcompat.widget.AppCompatEditText
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginStart="30dp"
android:layout_marginTop="30dp"
android:layout_marginEnd="30dp"
android:backgroundTint="#E4E4E4"
android:fontFamily="#font/roboto_light"
android:inputType="number"
android:paddingStart="16dp"
android:textSize="14sp"
android:paddingTop="11dp"
android:paddingEnd="0dp"
android:paddingBottom="10dp"
android:textColorHint="#color/color_text"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintTop_toBottomOf="#+id/et_countrycode"
android:visibility="gone"
android:textSize="12sp"
android:layout_marginTop="6dp"
app:layout_constraintStart_toStartOf="#+id/et_countrycode"
app:layout_constraintEnd_toEndOf="#+id/et_countrycode" />
</androidx.constraintlayout.widget.ConstraintLayout>
<Button
android:id="#+id/finish"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="12dp"
android:layout_marginHorizontal="30dp"
android:background="#drawable/bg_button_1"
android:textColor="#111B21"
android:textSize="14sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
</LinearLayout>
</FrameLayout>
Note: I have removed a bit of text and backgrounds but remember that all these views are essential
EDIT: I tried the following approach with adjustresize but the button is not overlapping with edittext
<FrameLayout 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">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<ScrollView
android:id="#+id/scrollView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintTop_toTopOf="parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="150dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="120dp"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:padding="20dp">
<ImageButton
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_gravity="center"
android:scaleType="center"
android:src="#drawable/back" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_gravity="bottom"
android:layout_marginBottom="20dp"
android:orientation="vertical" />
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/root_constraints"
android:layout_width="130dp"
android:layout_height="130dp"
android:layout_gravity="top|center"
android:layout_marginTop="20dp"
android:elevation="20dp">
<ImageView
android:id="#+id/std_imageView"
android:layout_width="100dp"
android:layout_height="100dp"
android:backgroundTint="#38A19C"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
</FrameLayout>
<androidx.appcompat.widget.AppCompatTextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="30dp"
android:layout_marginTop="144dp"
android:layout_marginEnd="30dp"
android:fontFamily="#font/montserrat_bold"
android:textColor="#0B3148"
android:textSize="48sp"
android:textStyle="bold"
/>
<androidx.appcompat.widget.AppCompatTextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="30dp"
android:layout_marginEnd="30dp"
android:fontFamily="#font/sf_bold"
android:text="#string/welcome_to_isaac"
android:textColor="#0B3148"
android:textSize="14sp"
android:textStyle="bold" />
<androidx.appcompat.widget.AppCompatTextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="30dp"
android:layout_marginEnd="30dp"
android:fontFamily="#font/sf_regular"
android:textColor="#0B3148"
android:textSize="14sp" />
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<androidx.appcompat.widget.AppCompatEditText
android:id="#+id/et_countrycode"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginStart="30dp"
android:layout_marginTop="30dp"
android:layout_marginEnd="30dp"
android:backgroundTint="#E4E4E4"
android:drawablePadding="8dp"
android:fontFamily="#font/roboto_light"
android:hint=""
android:inputType="number"
android:paddingStart="16dp"
android:paddingTop="11dp"
android:paddingEnd="0dp"
android:paddingBottom="10dp"
android:text=""
android:textColorHint="#color/color_text"
android:textSize="14sp"
android:visibility="gone"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<androidx.appcompat.widget.AppCompatEditText
android:id="#+id/et_email"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginStart="30dp"
android:layout_marginTop="30dp"
android:layout_marginEnd="30dp"
android:backgroundTint="#E4E4E4"
android:fontFamily="#font/roboto_light"
android:hint="#string/phone_number"
android:inputType="number"
android:paddingStart="16dp"
android:paddingTop="11dp"
android:paddingEnd="0dp"
android:paddingBottom="10dp"
android:textColorHint="#color/color_text"
android:textSize="14sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="6dp"
android:textSize="12sp"
android:visibility="gone"
app:layout_constraintEnd_toEndOf="#+id/et_countrycode"
app:layout_constraintStart_toStartOf="#+id/et_countrycode"
app:layout_constraintTop_toBottomOf="#+id/et_countrycode" />
</androidx.constraintlayout.widget.ConstraintLayout>
</LinearLayout>
</ScrollView>
<Button
android:id="#+id/bt_finish"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginHorizontal="30dp"
android:layout_marginTop="12dp"
android:background="#drawable/bg_button_1"
android:text="#string/continue_txt"
android:textColor="#111B21"
android:textSize="14sp"
app:layout_constraintTop_toBottomOf="#id/scrollView"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
</FrameLayout>

Use ConstraintLayout to position the button to the bottom of the screen and then add.
<activity
android:name=".activity"
android:windowSoftInputMode="adjustResize"
android:exported="false" />
...in the activity that would host that Fragment's layout.
Note
The button should be layout in this manner:
<androidx.constraintlayout.widget.ConstraintLayout>
<Button
android:id="#+id/finish"
android:layout_width="match_parent"
android:layout_height="wrap_content"
... />
</androidx.constraintlayout.widget.ConstraintLayout>
... but right now in your code, I can see the button inside a LinearLayout. Change the layout to make the button be positioned at the bottom of a ConstraintLayout and make that ConstraintLayout the parent of that button. The ConstraintLayout should also fill the whole screen.
Edit:
When you use windowSoftInputMode="adjustResize the system positions the element at the bottom of the screen on top of the keyboard and makes your layout shrink in size. So you need to attach a ScrollView to make your layout scrollable.
Like this:
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
...>
// Position this scrollView to fill the entire screen
<ScrollView
android:layout_width="0dp"
android:layout_height="0dp"
...>
// This scroll view layout would contain all your other layout views
</ScrollView>
<Button
android:id="#+id/finish"
android:layout_width="match_parent"
android:layout_height="wrap_content"
... />
</androidx.constraintlayout.widget.ConstraintLayout>
Working principle
The button should not be a child view of the ScrollView, it should be a child view of the root view, which is a ConstraintLayout that fills the screen, then the button is positioned to the bottom of the root view. The bottom of the ScrollView should be positioned to the top of the Button. That way, the child views of the ScrollView is scrollable and the button stays on top of the keyboard.

Go to your AndroidMenifest File, Inside you <activity> tag put android:windowSoftInputMode = "adjustpan" it would handle the view after showing up keyboard. if adjustpan doesn't work, there are more property, use one respect to your need.
example:
<activity
android:name=".YourActivityName"
android:windowSoftInputMode="adjustPan"
android:exported="false" />

Layout not scrolling and Views overlapping when Keyboard is shown Android Constraint layout

I have facing an issue, where my login screen is not scrolling and views are overlapping with button when keyboard shows up.
below is the code for Login layout, can somebody help me why views are getting overlapped
i pasted the login layout file here, Linearlayout at the bottom of the layout file is overlapping with Linearlayout defined justabove it , when Keyboard is opened. and the view is not scrolling.
<data>
<!-- databinding data here -->
</data>
<androidx.core.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="">
<androidx.constraintlayout.widget.Guideline
android:id="#+id/top_guideline"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.25" />
<ImageView
android:id="#+id/img_logo_login"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="#+id/top_guideline"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/txt_title_m_id"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
app:layout_constraintTop_toBottomOf="#+id/top_guideline" />
<TextView
android:id="#+id/txt_signin_proceed"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="#+id/txt_title_m_id" />
<RelativeLayout
android:id="#+id/rl_olk_sign"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="25dp"
android:layout_marginEnd="16dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="#+id/txt_signin_proceed">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_toStartOf="#+id/txt_olk_sign"
android:src="#drawable/ic_olk" />
<TextView
android:id="#+id/txt_olk_sign"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:padding="10dp"/>
</RelativeLayout>
<TextView
android:id="#+id/txt_no_olk_credentials"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="62dp"
android:layout_marginTop="30dp"
android:layout_marginEnd="62dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/rl_olk_sign" />
<TextView
android:id="#+id/txt_term_login"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="62dp"
android:layout_marginTop="12dp"
android:layout_marginEnd="62dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="#+id/txt_no_olk_credentials"/>
<TextView
android:id="#+id/tv_signin_username_pwd"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:padding="10dp"
android:layout_marginTop="#dimen/_10dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="#+id/txt_term_login"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:lineHeight="21sp"
android:padding="#dimen/_5dp"/>
</RelativeLayout>
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/cl_input_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:visibility="gone"
app:layout_constraintTop_toBottomOf="#+id/txt_signin_proceed">
<com.google.android.material.textfield.TextInputLayout
android:id="#+id/input_layout_user_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="10dp"
android:layout_marginEnd="16dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<androidx.appcompat.widget.AppCompatEditText
android:id="#+id/et_input_user_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</com.google.android.material.textfield.TextInputLayout>
<com.google.android.material.textfield.TextInputLayout
android:id="#+id/input_layout_password"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="5dp"
android:layout_marginEnd="8dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/input_layout_user_name">
<androidx.appcompat.widget.AppCompatEditText
android:id="#+id/et_input_password"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="textPassword"/>
</com.google.android.material.textfield.TextInputLayout>
<LinearLayout
android:id="#+id/rl_sign_in_login"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="#dimen/_20dp"
android:layout_marginEnd="16dp"
android:layout_marginBottom="42dp"
android:onClick="#{() -> callback.method2()}"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/input_layout_password">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:padding="10dp"
android:gravity="center"/>
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
<LinearLayout
android:id="#+id/rl_copy_right"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_marginBottom="#dimen/_5dp"
android:orientation="vertical"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintBottom_toBottomOf="parent">
<TextView
android:id="#+id/tv_back_to_signin"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:overScrollMode="always"
android:layout_above="#id/tv_copyright_text"/>
<TextView
android:id="#+id/tv_copyright_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:gravity="center_horizontal"
android:overScrollMode="always"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
android:visibility="visible" />
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.core.widget.NestedScrollView>

add this adjustResize to the activity tag in your manifest , then your view will shrink if keyboard opens.
<activity
android:name=".Activities.MyActivity"
android:windowSoftInputMode="adjustResize" ----->this tag
/>
and for your scroll it might help but let me know if it didnt , and post some screenshots of how your view looks.

Change object width and height without hard-coding xml values

I am creating a home page for my android application in Android Studios. In the layouts folder I have my home page activity XML file. The home page will contain 3 clickable "boxes" which are CardViews. They are functioning correctly but I am working to change the CardViews sizes without hard-coding XML width and height (or other objects in the future). So that the sizes change properly according to different screen sizes.
In this specific case I want to increase the height of the CardViews.
Capture Receipt and Create Invoice CardViews I want to modify size of.
I am using a Linear Layout inside a Constraint Layout. The CardViews layout_width and layout_height are selected to match parent. I have modified the layout_weight, but this does not get the result I am looking for. I want to increase the heights without increasing the width.
Is this something to be done in XML or the Java part of the code?
Here is my home page activity XML code (without the Bottom Nav bar and Add Item part):
<?xml version="1.0" encoding="utf-8"?>
<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:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".HomePageActivity">
<LinearLayout
android:id="#+id/ll"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/lightComplimentGrey"
android:gravity="center|top"
android:orientation="vertical"
tools:context=".MainActivity"
tools:layout_editor_absoluteX="0dp"
tools:layout_editor_absoluteY="0dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="290dp"
android:background="#drawable/curved_top"
android:orientation="horizontal"
android:paddingBottom="-50dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_constraintBottom_toTopOf="#+id/ll">
<TextView
android:id="#+id/currentUserTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="188dp"
android:layout_marginBottom="8dp"
android:gravity="left"
android:text="Current User"
android:textColor="#99E8F3"
android:textSize="20sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.922"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.352" />
<TextView
android:id="#+id/userNameEntryTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:gravity="left"
android:hint="Not Signed In"
android:textColor="#FFFFFF"
android:textColorHint="#FFFFFF"
android:textSize="24sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="#+id/currentUser"
app:layout_constraintTop_toTopOf="parent" />
<Spinner
android:id="#+id/changeUserSpinner"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="8dp"
android:backgroundTint="#FFFFFF"
app:layout_constraintBottom_toBottomOf="#+id/
app:layout_constraintStart_toEndOf="#+id/userNameEntry"
app:layout_constraintTop_toTopOf="#+id/currentUserTextView"
app:layout_constraintVertical_bias="0.558" />
<ImageButton
android:id="#+id/menuButton"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="8dp"
android:layout_marginBottom="8dp"
android:layout_weight="4"
android:background="#drawable/ic_menu_light_blue_24dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.048" />
<ImageButton
android:id="#+id/notificationButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="16dp"
android:layout_marginBottom="
android:background="#drawable/ic_tooLongToPost"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0" />
</android.support.constraint.ConstraintLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="-70dp"
android:clipToPadding="false"
android:gravity="center"
android:orientation="horizontal">
<android.support.v7.widget.CardView
android:id="#+id/capture_receipt"
android:layout_width="0px"
android:layout_weight="1"
android:layout_height="wrap_content"
android:layout_margin="#dimen/view_margin_normal_screen"
android:clickable="true"
android:foreground="?android:attr/selectableItemBackground">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical">
<ImageView
android:layout_width="64dp"
android:layout_height="64dp"
android:background="#drawable/circle_background_green"
android:padding="10dp"
android:src="#drawable/ic_photo_camera_black_24dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:text="Capture Receipt"
android:textStyle="bold" />
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_margin="10dp"
android:background="#color/lightComplimentGrey" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:padding="5dp"
android:text="Scan receipt to recognize items"
android:textColor="#android:color/darker_gray" />
</LinearLayout>
</android.support.v7.widget.CardView>
How is it possible to modify the heights and widths (just like you would when hard coding the XML) without hard-coding?

Constraint layout scroll to bottom with keypad open

I am using ConstraintLayout to design a sign-up screen. I have put the ConstraintLayout inside a scroll view. The user should be able to scroll and view the whole content even when the keypad is open. This feature works when I am using RelativeLayout but doesn't work when I am using ConstraintLayout. The views which are at the bottom of the screen are being hidden behind the keypad. Following is the layout I am using.
<?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_width="match_parent"
android:layout_height="match_parent"
android:background="#FFFFFF"
android:paddingTop="23dp"
android:fillViewport="true"
tools:context="com.givhero.activities.LoginActivity">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="bottom"
tools:context="com.givhero.activities.LoginActivity">
<ImageView
android:id="#+id/back"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="15dp"
android:src="#drawable/back"
android:tint="#color/colorPrimary"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:layout_editor_absoluteX="0dp"/>
<TextView
android:id="#+id/regEmail"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:paddingLeft="10dp"
android:text="#string/sign_up_email"
android:textColor="#color/colorPrimary"
android:textSize="#dimen/titles_lists"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/back"
tools:layout_editor_absoluteX="0dp"/>
<TextView
android:id="#+id/nameEditText"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="15dp"
android:layout_marginLeft="15dp"
android:layout_marginRight="15dp"
android:layout_marginStart="15dp"
android:layout_marginTop="30dp"
android:background="#android:color/transparent"
android:gravity="left"
android:hint="Name"
android:textColor="#color/dark"
android:textColorHint="#color/dark"
android:textSize="#dimen/base"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#+id/regEmail"
/>
<View
android:id="#+id/nameDivider"
android:layout_width="0dp"
android:layout_height="1dp"
android:layout_marginTop="15dp"
android:background="#color/divider"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#+id/nameEditText"
/>
<EditText
android:id="#+id/emailEditText"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="15dp"
android:layout_marginLeft="15dp"
android:layout_marginRight="15dp"
android:layout_marginStart="15dp"
android:layout_marginTop="30dp"
android:background="#android:color/transparent"
android:gravity="left"
android:hint="Email"
android:inputType="textEmailAddress"
android:textColor="#color/dark"
android:textColorHint="#color/dark"
android:textSize="#dimen/base"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#+id/nameDivider"
/>
<View
android:id="#+id/emailDivider"
android:layout_width="0dp"
android:layout_height="1dp"
android:layout_marginTop="15dp"
android:background="#color/divider"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#+id/emailEditText"/>
<Button
android:id="#+id/submitButton"
android:layout_width="0dp"
android:layout_height="62dp"
android:layout_marginEnd="15dp"
android:layout_marginLeft="15dp"
android:layout_marginRight="15dp"
android:layout_marginStart="15dp"
android:layout_marginTop="30dp"
android:background="#drawable/button_theme"
android:enabled="false"
android:text="#string/sign_up"
android:textColor="#FFFFFF"
android:textSize="#dimen/base"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#+id/emailDivider"
/>
<TextView
android:id="#+id/signUpMessage"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_margin="30dp"
android:padding="15dp"
android:text="#string/sign_up_message"
android:textColor="#color/dark80Opacity"
android:textSize="#dimen/medium12"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/submitButton"
/>
</android.support.constraint.ConstraintLayout>
</ScrollView>
I have added the following in Manifest.
<activity android:name=".activities.EmailSignupActivity"
android:screenOrientation="portrait"
android:windowSoftInputMode="adjustResize">
</activity>
Though it doesn't scroll as expected. Following are the screen shots for better understanding
As you can see I have some text below the EditText fields and signup button. What I am expecting is that the user should be able to scroll to the bottom of the page to see that text even if the keyboard is open. Please check the following screenshot when the keypad is open
I am unable to scroll the view when the keyboard is open.
EDIT
Hey,
If anyone is stuck with this issue and landed here for the answer. I could finally find the solution for it. I couldn't figure out the exact reason for this issue but could figure out what is causing the layout not to scroll. Initially, I have been trying to occupy the whole screen including the status bar for design and used the following in oncreate
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
The above line has caused the issue and once I have removed it, I was able to scroll the layout. I would be happy to find the reason why is the layout not scrolling if we occupy the full screen including the status bar for design.

You have to set the windowSoftInputMode on your Activity on your Manifest file.
android:windowSoftInputMode="stateVisible|adjustResize"
(or android:windowSoftInputMode="stateHidden|adjustResize" if you don't want the keyboard to show when you open the activity)
and make your design of the activity to be like that
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
/* your elements here */
</android.support.constraint.ConstraintLayout>
</android.support.v4.widget.NestedScrollView>
</FrameLayout>

You can use the ConstraintLayout within RelativeLayout to use the ScrollView. Give the fillViewport to ScrollView. I just change your code like I use to do. And you should give marginBottom to scroll when keyboard is on. Try it out. Hope it help.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
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="#FFFFFF"
android:paddingTop="23dp"
tools:context="com.givhero.activities.LoginActivity">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="bottom"
tools:context="com.givhero.activities.LoginActivity">
<ImageView
android:id="#+id/back"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="15dp"
android:src="#drawable/back"
android:tint="#color/colorPrimary"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:layout_editor_absoluteX="0dp"/>
<TextView
android:id="#+id/regEmail"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:paddingLeft="10dp"
android:text="#string/sign_up_email"
android:textColor="#color/colorPrimary"
android:textSize="#dimen/titles_lists"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/back"
tools:layout_editor_absoluteX="0dp"/>
<TextView
android:id="#+id/nameEditText"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="15dp"
android:layout_marginLeft="15dp"
android:layout_marginRight="15dp"
android:layout_marginStart="15dp"
android:layout_marginTop="30dp"
android:background="#android:color/transparent"
android:gravity="left"
android:hint="Name"
android:textColor="#color/dark"
android:textColorHint="#color/dark"
android:textSize="#dimen/base"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#+id/regEmail"
/>
<View
android:id="#+id/nameDivider"
android:layout_width="0dp"
android:layout_height="1dp"
android:layout_marginTop="15dp"
android:background="#color/divider"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#+id/nameEditText"
/>
<EditText
android:id="#+id/emailEditText"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="15dp"
android:layout_marginLeft="15dp"
android:layout_marginRight="15dp"
android:layout_marginStart="15dp"
android:layout_marginTop="30dp"
android:background="#android:color/transparent"
android:gravity="left"
android:hint="Email"
android:inputType="textEmailAddress"
android:textColor="#color/dark"
android:textColorHint="#color/dark"
android:textSize="#dimen/base"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#+id/nameDivider"
/>
<View
android:id="#+id/emailDivider"
android:layout_width="0dp"
android:layout_height="1dp"
android:layout_marginTop="15dp"
android:background="#color/divider"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#+id/emailEditText"/>
<Button
android:id="#+id/submitButton"
android:layout_width="0dp"
android:layout_height="62dp"
android:layout_marginEnd="15dp"
android:layout_marginLeft="15dp"
android:layout_marginRight="15dp"
android:layout_marginStart="15dp"
android:layout_marginTop="30dp"
android:background="#drawable/button_theme"
android:enabled="false"
android:text="#string/signup"
android:textColor="#FFFFFF"
android:textSize="#dimen/base"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#+id/emailDivider"
/>
<TextView
android:id="#+id/signUpMessage"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_margin="30dp"
android:padding="15dp"
android:text="#string/sign_up_message"
android:textColor="#color/dark80Opacity"
android:textSize="#dimen/medium12"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/submitButton"
android:layout_marginTop="8dp"
android:layout_marginBottom="16dp"/>
</android.support.constraint.ConstraintLayout>
</ScrollView>
</RelativeLayout>

Add this in the manifest for your activity.
android:windowSoftInputMode="stateVisible|adjustResize"