Login Activity layout xml Android

activity_login.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/colorPrimary"
    android:orientation="vertical"
    android:padding="30dp"
    tools:context=".LoginActivity">

    <TextView
        android:id="@+id/fragment_login_title"
        android:layout_width="wrap_content"
        android:layout_gravity="center"
        android:layout_height="wrap_content"
        android:layout_marginBottom="30dp"
        android:layout_marginTop="20dp"
        android:text="@string/app_name"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:textColor="@android:color/white"
        android:textSize="30sp"/>

    <AutoCompleteTextView
        android:id="@+id/email_edittext"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="10dp"
        android:hint="@string/prompt_email"
        android:imeOptions="actionNext"
        android:inputType="textEmailAddress"
        android:maxLines="1"
        android:shadowColor="@android:color/white"
        android:singleLine="true"
        android:textColor="@android:color/white"
        android:textColorHighlight="@android:color/white"
        android:textColorHint="@android:color/white"
        android:textColorLink="@android:color/white"/>

    <EditText
        android:id="@+id/password_edittext"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="16dp"
        android:hint="@string/prompt_password"
        android:imeActionLabel="@string/action_sign_in"
        android:imeOptions="actionUnspecified"
        android:inputType="textPassword"
        android:maxLines="1"
        android:shadowColor="@android:color/white"
        android:singleLine="true"
        android:textColor="@android:color/white"
        android:textColorHighlight="@android:color/white"
        android:textColorHint="@android:color/white"
        android:textColorLink="@android:color/white"/>

    <Button
        style="?android:textAppearanceSmall"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:background="@color/colorPrimaryDark"
        android:text="@string/action_sign_in"
        android:textColor="@android:color/white"
        android:textStyle="bold"
        android:onClick="handleSignIn"/>

    <Button
        style="?android:textAppearanceSmall"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:background="@color/colorPrimaryDark"
        android:text="@string/action_sign_up"
        android:textColor="@android:color/white"
        android:textStyle="bold"
        android:onClick="handleSignUp"/>

</LinearLayout>