bitsy-wallet/app/src/main/res/layout/fragment_send_transaction.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".fragments.SendTransactionFragment">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingTop="@dimen/activity_vertical_margin"
        android:paddingBottom="@dimen/activity_vertical_margin"
        android:focusable="true"
        android:focusableInTouchMode="true"
        android:clickable="true">

        <androidx.constraintlayout.widget.Guideline
            android:id="@+id/centeredVerticalGuideline"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            app:layout_constraintGuide_percent="0.5"/>

        <androidx.constraintlayout.widget.Guideline
            android:id="@+id/cameraVerticalGuideline"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            app:layout_constraintGuide_percent="0.65"/>

        <com.google.android.material.textfield.TextInputLayout
            android:id="@+id/tilTo"
            style="@style/Widget.Bitsy.TextInputLayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginStart="@dimen/activity_horizontal_margin"
            android:layout_marginEnd="@dimen/activity_horizontal_margin"
            android:hint="@string/text__to"
            app:layout_constraintTop_toTopOf="parent">

            <cy.agorise.bitsybitshareswallet.views.MyTextInputEditText
                android:id="@+id/tietTo"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:digits="abcdefghijklmnopqrstuvwxyz-0123456789"
                android:maxLines="1"
                android:lines="1"
                android:imeOptions="actionNext"/>

        </com.google.android.material.textfield.TextInputLayout>

        <com.google.android.material.textfield.TextInputLayout
            android:id="@+id/tilAmount"
            style="@style/Widget.Bitsy.TextInputLayout"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:hint="@string/text__amount"
            android:layout_marginTop="@dimen/spacing_same_topic"
            android:layout_marginStart="@dimen/activity_horizontal_margin"
            android:layout_marginEnd="12dp"
            app:layout_constraintTop_toBottomOf="@id/tilTo"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toStartOf="@id/centeredVerticalGuideline">

            <cy.agorise.bitsybitshareswallet.views.MyTextInputEditText
                android:id="@+id/tietAmount"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:maxLines="1"
                android:inputType="numberDecimal"/>

        </com.google.android.material.textfield.TextInputLayout>

        <Spinner
            android:id="@+id/spAsset"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginTop="12dp"
            android:layout_marginStart="12dp"
            android:layout_marginEnd="@dimen/activity_horizontal_margin"
            app:layout_constraintTop_toTopOf="@+id/tilAmount"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toEndOf="@id/centeredVerticalGuideline"/>

        <View
            android:id="@+id/vSpinner"
            android:layout_width="0dp"
            android:layout_height="1dp"
            android:layout_marginTop="12dp"
            android:background="@color/darkGray"
            app:layout_constraintTop_toBottomOf="@+id/spAsset"
            app:layout_constraintEnd_toEndOf="@+id/spAsset"
            app:layout_constraintStart_toStartOf="@+id/spAsset" />

        <TextView
            android:id="@+id/tvAvailableAssetAmount"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:textAppearance="@style/TextAppearance.Bitsy.Caption"
            tools:text="12.01253 BTS"
            android:textAlignment="center"
            app:layout_constraintTop_toBottomOf="@id/vSpinner"
            app:layout_constraintStart_toStartOf="@id/vSpinner"
            app:layout_constraintEnd_toEndOf="@id/vSpinner"/>

        <com.google.android.material.textfield.TextInputLayout
            android:id="@+id/tilMemo"
            style="@style/Widget.Bitsy.TextInputLayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="@dimen/spacing_same_topic"
            android:layout_marginStart="@dimen/activity_horizontal_margin"
            android:layout_marginEnd="@dimen/activity_horizontal_margin"
            android:hint="@string/text__memo"
            app:layout_constraintTop_toBottomOf="@id/tilAmount">

            <cy.agorise.bitsybitshareswallet.views.MyTextInputEditText
                android:id="@+id/tietMemo"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:inputType="textMultiLine"
                android:maxLines="3"/>

        </com.google.android.material.textfield.TextInputLayout>

        <TextView
            android:id="@+id/tvScan"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="@dimen/spacing_same_topic"
            android:layout_marginStart="@dimen/activity_horizontal_margin"
            android:text="@string/text__scan_qr"
            android:textAppearance="@style/TextAppearance.Bitsy.Body1"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/tilMemo" />

        <View
            android:id="@+id/viewCamera"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:layout_marginTop="@dimen/spacing_same_topic"
            android:layout_marginStart="@dimen/activity_horizontal_margin"
            android:background="@drawable/camera_view_background"
            app:layout_constraintDimensionRatio="1:1"
            app:layout_constraintTop_toBottomOf="@+id/tvScan"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toStartOf="@id/cameraVerticalGuideline"/>

        <com.google.android.material.floatingactionbutton.FloatingActionButton
            android:id="@+id/fabOpenCamera"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            app:fabCustomSize="32dp"
            app:maxImageSize="20dp"
            app:srcCompat="@drawable/ic_camera"
            app:borderWidth="0dp"
            android:backgroundTint="@color/colorSend"
            app:layout_constraintStart_toEndOf="@id/cameraVerticalGuideline"
            app:layout_constraintTop_toBottomOf="@+id/tvScan"/>

        <me.dm7.barcodescanner.zxing.ZXingScannerView
            android:id="@+id/cameraPreview"
            android:layout_width="0dp"
            android:layout_height="0dp"
            app:layout_constraintDimensionRatio="w,3:4"
            app:layout_constraintTop_toTopOf="@+id/viewCamera"
            app:layout_constraintBottom_toBottomOf="@id/viewCamera"
            app:layout_constraintStart_toStartOf="@id/viewCamera"
            app:layout_constraintEnd_toEndOf="@id/viewCamera" />

        <View
            android:id="@+id/vSend"
            android:layout_width="120dp"
            android:layout_height="120dp"
            android:layout_marginEnd="0dp"
            android:background="@drawable/send_fab_background_disabled"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintTop_toTopOf="@id/viewCamera"
            app:layout_constraintBottom_toBottomOf="@id/viewCamera"/>

        <com.google.android.material.floatingactionbutton.FloatingActionButton
            android:id="@+id/fabSendTransaction"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="15dp"
            android:layout_marginEnd="15dp"
            app:fabCustomSize="90dp"
            app:maxImageSize="70dp"
            app:srcCompat="@drawable/ic_arrow_forward"
            app:borderWidth="0dp"
            app:layout_constraintEnd_toEndOf="@id/vSend"
            app:layout_constraintTop_toTopOf="@+id/vSend" />

    </androidx.constraintlayout.widget.ConstraintLayout>

</ScrollView>