crystal-wallet-android/app/src/main/res/layout/activity_create_contact.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:focusableInTouchMode="true"
    android:paddingTop="@dimen/activity_vertical_margin">

    <android.support.design.widget.TextInputLayout
        android:id="@+id/tilName"
        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.support.design.widget.TextInputEditText
            android:id="@+id/tietName"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="Contact Name"
            android:inputType="textPersonName"
            android:maxLines="1"/>

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

    <Button
        android:id="@+id/btnAddAddress"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="@dimen/spacing_different_topic"
        android:text="@string/add"
        android:textStyle="bold"
        style="@style/Widget.AppCompat.Button.Borderless.Colored"
        app:layout_constraintTop_toBottomOf="@id/tilName"
        app:layout_constraintEnd_toEndOf="parent"/>

    <TextView
        android:id="@+id/tvCryptoAddresses"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        android:layout_marginStart="@dimen/activity_horizontal_margin"
        android:text="Crypto addresses"
        android:textAppearance="@style/TextAppearance.Body1"
        android:textStyle="bold"
        app:layout_constraintTop_toTopOf="@id/btnAddAddress"
        app:layout_constraintStart_toStartOf="parent"/>

    <android.support.v7.widget.RecyclerView
        android:id="@+id/rvContactAddresses"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginStart="@dimen/activity_horizontal_margin"
        android:layout_marginEnd="@dimen/activity_horizontal_margin"
        app:layout_constraintTop_toBottomOf="@id/btnAddAddress"
        tools:listitem="@layout/contact_address_list_item"
        tools:itemCount="1"/>

    <Button
        android:id="@+id/btnCancel"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="@dimen/spacing_different_section"
        android:layout_marginStart="@dimen/activity_horizontal_margin"
        android:theme="@style/RedButton"
        android:text="@string/cancel"
        app:layout_constraintTop_toBottomOf="@id/rvContactAddresses"
        app:layout_constraintStart_toStartOf="parent"/>

    <Button
        android:id="@+id/btnCreate"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="@dimen/activity_horizontal_margin"
        android:theme="@style/BlueButton"
        android:text="Create"
        app:layout_constraintTop_toTopOf="@id/btnCancel"
        app:layout_constraintEnd_toEndOf="parent"/>

    <cy.agorise.crystalwallet.util.BottomStatusBar
        android:id="@+id/bottomStatusBar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toBottomOf="parent"/>

</android.support.constraint.ConstraintLayout>