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multidataset_service_auth_activity.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:id="@+id/authLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:importantForAutofill="noExcludeDescendants"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".multidatasetservice.AuthActivity">

<TextView
        android:id="@+id/master_login_header"
        style="@style/TextAppearance.AppCompat.Large"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="@dimen/spacing_normal"
        android:text="@string/autofill_master_login_label"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

<TextView
        android:id="@+id/password_label"
        style="@style/TextAppearance.AppCompat.Body1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="@dimen/spacing_normal"
        android:layout_marginStart="@dimen/spacing_normal"
        android:layout_marginTop="@dimen/spacing_large"
        android:labelFor="@+id/master_password"
        android:text="@string/password_label"
        app:layout_constraintEnd_toStartOf="@+id/master_password"
        app:layout_constraintHorizontal_chainStyle="packed"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/master_login_header" />

<EditText
        android:id="@+id/master_password"
        android:layout_width="@dimen/text_field_width"
        android:layout_height="wrap_content"
        android:layout_marginEnd="@dimen/spacing_normal"
        android:layout_marginStart="@dimen/spacing_normal"
        android:layout_marginTop="@dimen/spacing_normal"
        android:inputType="textPassword"
        app:layout_constraintBottom_toBottomOf="@+id/password_label"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/password_label"
        app:layout_constraintTop_toTopOf="@+id/password_label" />

<TextView
        android:id="@+id/cancel"
        style="@style/Widget.AppCompat.Button.Borderless"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="@dimen/spacing_normal"
        android:layout_marginTop="@dimen/spacing_normal"
        android:text="@string/cancel"
        android:textColor="@android:color/holo_blue_dark"
        app:layout_constraintEnd_toStartOf="@+id/login"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintHorizontal_chainStyle="packed"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/master_password" />

<TextView
        android:id="@+id/login"
        style="@style/Widget.AppCompat.Button.Borderless"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="@dimen/spacing_normal"
        android:layout_marginStart="@dimen/spacing_normal"
        android:text="@string/login_label"
        android:textColor="@android:color/holo_blue_dark"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toEndOf="@+id/cancel"
        app:layout_constraintTop_toTopOf="@+id/cancel" />

</android.support.constraint.ConstraintLayout>