crystal-wallet-android/app/src/main/res/layout/fragment_security_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">

    <android.support.design.widget.CoordinatorLayout
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginTop="24dp"
        android:layout_marginStart="24dp"
        android:layout_marginEnd="24dp"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintBottom_toTopOf="@+id/vPocketSecurity">

        <android.support.design.widget.AppBarLayout
            android:id="@+id/appbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@color/lightGray"
            app:theme="@style/AppTheme.AppBarOverlay">

            <android.support.design.widget.TabLayout
                android:id="@+id/tabs"
                android:layout_alignParentBottom="true"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                app:tabTextColor="@color/black"
                android:animateLayoutChanges="true">

                <android.support.design.widget.TabItem
                    android:id="@+id/tabNone"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="None" />

                <android.support.design.widget.TabItem
                    android:id="@+id/tabPin"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="Pin" />

                <android.support.design.widget.TabItem
                    android:id="@+id/tabPattern"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="Pattern" />

            </android.support.design.widget.TabLayout>

        </android.support.design.widget.AppBarLayout>

        <android.support.v4.view.ViewPager
            android:id="@+id/pager"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:layout_behavior="@string/appbar_scrolling_view_behavior"/>

    </android.support.design.widget.CoordinatorLayout>

    <View
        android:id="@+id/vPocketSecurity"
        android:layout_width="match_parent"
        android:layout_height="140dp"
        android:background="@color/lightGray"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent" />

    <TextView
        android:id="@+id/tvPocketSecurity"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="24dp"
        android:layout_marginStart="24dp"
        android:text="Use &quot;Pocket&quot; Security"
        android:textSize="16sp"
        android:textStyle="bold"
        app:layout_constraintTop_toTopOf="@+id/vPocketSecurity"
        app:layout_constraintStart_toStartOf="@id/vPocketSecurity"/>

    <Switch
        android:id="@+id/sPocketSecurity"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="24dp"
        android:layout_marginTop="24dp"
        app:layout_constraintTop_toTopOf="@+id/vPocketSecurity"
        app:layout_constraintEnd_toEndOf="@id/vPocketSecurity" />

    <TextView
        android:id="@+id/tvPocketSecurityUser"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        android:text="@string/user_name_password_placeholder"
        tools:layout_editor_absoluteY="8dp"
        app:layout_constraintTop_toBottomOf="@id/tvPocketSecurity"
        app:layout_constraintStart_toStartOf="@id/tvPocketSecurity"/>
    
    <EditText
        android:id="@+id/etPocketPassword"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        app:layout_constraintTop_toBottomOf="@id/tvPocketSecurityUser"
        app:layout_constraintStart_toStartOf="@id/tvPocketSecurity"
        app:layout_constraintEnd_toEndOf="@id/sPocketSecurity"/>

</android.support.constraint.ConstraintLayout>