crystal-wallet-android/app/src/main/res/layout/fragment_general_settings.xml

<?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:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:id="@+id/tvBackupAsset"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="32dp"
        android:layout_marginTop="16dp"
        android:text="Backup Asset"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <Spinner
        android:id="@+id/spBackupAsset"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="32dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="@+id/tvBackupAsset"
        app:layout_constraintTop_toBottomOf="@id/tvBackupAsset" />

    <View
        android:id="@+id/vBackupAsset"
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginEnd="32dp"
        android:layout_marginStart="32dp"
        android:layout_marginTop="8dp"
        android:background="@color/gray"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/spBackupAsset" />

    <TextView
        android:id="@+id/tvTaxableCountry"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:text="Taxable Country"
        app:layout_constraintTop_toBottomOf="@id/vBackupAsset"
        app:layout_constraintStart_toStartOf="@id/tvBackupAsset"/>

    <Spinner
        android:id="@+id/spTaxableCountry"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        app:layout_constraintTop_toBottomOf="@+id/tvTaxableCountry"
        app:layout_constraintStart_toStartOf="@id/spBackupAsset"
        app:layout_constraintEnd_toEndOf="@id/spBackupAsset"/>

    <View
        android:id="@+id/vTaxableCountry"
        android:layout_width="0dp"
        android:layout_height="1dp"
        android:layout_marginTop="8dp"
        android:background="@color/gray"
        app:layout_constraintTop_toBottomOf="@id/spTaxableCountry"
        app:layout_constraintStart_toStartOf="@id/vBackupAsset"
        app:layout_constraintEnd_toEndOf="@id/vBackupAsset"/>

    <TextView
        android:id="@+id/tvPreferredLanguage"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:text="Preferred Language"
        app:layout_constraintStart_toStartOf="@id/tvTaxableCountry"
        app:layout_constraintTop_toBottomOf="@id/vTaxableCountry"/>

    <Spinner
        android:id="@+id/spPreferredLanguage"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        app:layout_constraintTop_toBottomOf="@id/tvPreferredLanguage"
        app:layout_constraintStart_toStartOf="@id/spTaxableCountry"
        app:layout_constraintEnd_toEndOf="@id/spTaxableCountry"/>

    <View
        android:id="@+id/vPreferredLanguage"
        android:layout_width="0dp"
        android:layout_height="1dp"
        android:layout_marginTop="8dp"
        android:background="@color/gray"
        app:layout_constraintTop_toBottomOf="@id/spPreferredLanguage"
        app:layout_constraintStart_toStartOf="@id/vTaxableCountry"
        app:layout_constraintEnd_toEndOf="@id/vTaxableCountry"/>

    <TextView
        android:id="@+id/tvDisplayDateTime"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:text="Display Dates and Times as"
        app:layout_constraintTop_toBottomOf="@id/vPreferredLanguage"
        app:layout_constraintStart_toStartOf="@id/tvPreferredLanguage"/>

    <Spinner
        android:id="@+id/spDisplayDateTime"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        app:layout_constraintTop_toBottomOf="@id/tvDisplayDateTime"
        app:layout_constraintStart_toStartOf="@id/spPreferredLanguage"
        app:layout_constraintEnd_toEndOf="@id/spPreferredLanguage"/>

    <View
        android:id="@+id/vDisplayDateTime"
        android:layout_width="0dp"
        android:layout_height="1dp"
        android:layout_marginTop="8dp"
        android:background="@color/gray"
        app:layout_constraintTop_toBottomOf="@id/spDisplayDateTime"
        app:layout_constraintStart_toStartOf="@id/vPreferredLanguage"
        app:layout_constraintEnd_toEndOf="@id/vPreferredLanguage"/>

    <TextView
        android:id="@+id/tvSound"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:text="Funds Received Sound"
        app:layout_constraintTop_toBottomOf="@id/vDisplayDateTime"
        app:layout_constraintStart_toStartOf="@id/tvDisplayDateTime" />

    <Spinner
        android:id="@+id/spSound"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        app:layout_constraintTop_toBottomOf="@id/tvSound"
        app:layout_constraintStart_toStartOf="@id/spDisplayDateTime"
        app:layout_constraintEnd_toEndOf="@id/spDisplayDateTime"/>

    <View
        android:id="@+id/vSound"
        android:layout_width="0dp"
        android:layout_height="1dp"
        android:layout_marginTop="8dp"
        android:background="@color/gray"
        app:layout_constraintTop_toBottomOf="@id/spSound"
        app:layout_constraintStart_toStartOf="@id/vDisplayDateTime"
        app:layout_constraintEnd_toEndOf="@id/vDisplayDateTime"/>

    <TextView
        android:id="@+id/tvCloseWalletTimer"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="32dp"
        android:text="Close wallet after 3 min. of inactivity"
        android:textSize="14sp"
        android:textStyle="bold"
        app:layout_constraintTop_toBottomOf="@id/vSound"
        app:layout_constraintStart_toStartOf="@id/spSound" />

    <Switch
        android:id="@+id/sCloseWalletTimer"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintTop_toTopOf="@+id/tvCloseWalletTimer"
        app:layout_constraintEnd_toEndOf="@id/vSound" />

    <TextView
        android:id="@+id/tvBugsErrors"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="40dp"
        android:text="Bugs or Errors? Let us know"
        android:textSize="14sp"
        android:textStyle="bold"
        app:layout_constraintStart_toStartOf="@id/tvCloseWalletTimer"
        app:layout_constraintTop_toBottomOf="@id/tvCloseWalletTimer"/>

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="30dp"
        android:text="CONTACT"
        android:textStyle="bold"
        android:textColor="@color/white"
        android:background="@color/colorPrimary"
        app:layout_constraintTop_toBottomOf="@id/tvCloseWalletTimer"
        app:layout_constraintEnd_toEndOf="@id/sCloseWalletTimer" />

</android.support.constraint.ConstraintLayout>