vtosters/smali/res/layout/fragment_start.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout android:theme="@style/SignUpTheme"
    android:id="@id/root_view"
    android:background="?tabbar_background"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <com.vk.im.ui.views.FrescoImageView
        android:id="@id/icon"
        android:layout_width="76.0dip"
        android:layout_height="76.0dip"
        android:layout_marginBottom="32.0dip"
        android:layout_centerHorizontal="true"
        app:layout_constraintBottom_toTopOf="@id/title"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:vkim_cornerRadius="17.0dip" />

    <TextView
        android:gravity="center_horizontal"
        android:id="@id/title"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="7.0dip"
        android:text="@string/sign_up_start_title"
        android:layout_below="@id/icon"
        app:layout_constraintBottom_toTopOf="@id/subtitle"
        style="@style/SignUpTheme.TextStyle.Header1" />

    <TextView
        android:gravity="center_horizontal"
        android:id="@id/subtitle"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="69.0dip"
        android:text="@string/sign_up_start_subtitle"
        android:layout_below="@id/title"
        android:paddingStart="16.0dip"
        android:paddingEnd="16.0dip"
        app:layout_constraintBottom_toTopOf="@id/vk_login_container"
        app:layout_goneMarginBottom="257.0dip"
        style="@style/SignUpTheme.TextStyle.Subtitle" />

    <LinearLayout
        android:gravity="center_horizontal"
        android:orientation="vertical"
        android:id="@id/vk_login_container"
        android:background="@drawable/bg_outline_grey_rounded"
        android:paddingTop="19.0dip"
        android:paddingBottom="16.0dip"
        android:visibility="gone"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@id/bottom_action_container"
        android:layout_centerHorizontal="true"
        android:paddingStart="16.0dip"
        android:paddingEnd="16.0dip"
        app:layout_constraintBottom_toTopOf="@id/bottom_action_container"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent">

        <com.vk.imageloader.view.VKCircleImageView
            android:id="@id/avatar"
            android:layout_width="64.0dip"
            android:layout_height="64.0dip" />

        <TextView
            android:textSize="16.0sp"
            android:textStyle="normal"
            android:textColor="#ff1d1e1f"
            android:gravity="center_horizontal"
            android:id="@id/user_name"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="9.0dip"
            android:lineSpacingExtra="4.0sp"
            android:fontFamily="sans-serif-medium" />

        <com.vk.im.signup.widgets.LoadingButton
            android:id="@id/continue_login"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="19.0dip"
            android:text="@string/sign_up_start_continue"
            style="@style/SignUpTheme.Button" />
    </LinearLayout>

    <FrameLayout
        android:id="@id/bottom_action_container"
        android:padding="16.0dip"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toBottomOf="parent">

        <com.vk.im.signup.widgets.LoadingButton
            android:layout_gravity="center"
            android:id="@id/start_registration"
            android:visibility="invisible"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="@string/sign_up_start_start_conversation"
            style="@style/SignUpTheme.Button" />

        <TextView
            android:textSize="14.0sp"
            android:textStyle="normal"
            android:textColor="#ff4986cc"
            android:layout_gravity="center"
            android:id="@id/another_account"
            android:visibility="invisible"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/sign_up_start_use_another_account"
            android:fontFamily="sans-serif-medium"
            style="@style/SignUpTheme.TextStyle.Action" />
    </FrameLayout>
</android.support.constraint.ConstraintLayout>