gyrodraw/GyroDraw

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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"
  tools:context="ch.epfl.sweng.GyroDraw.MainActivity"
  tools:layout_editor_absoluteY="25dp">

    <ImageView
        android:id="@+id/backgroundImage"
        style="@style/BackGroundImageView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:alpha="1.0"
        app:srcCompat="@drawable/home_background"
        tools:ignore="ContentDescription" />

    <ImageView
        android:id="@+id/backgroundAnimation"
        style="@style/BackGroundImageView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:alpha="0.8"
        app:srcCompat="@drawable/background_animation"
        tools:ignore="ContentDescription" />

    <ImageView
        android:id="@+id/logo"
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:contentDescription="@string/app_logo"
        app:layout_constraintBottom_toBottomOf="@+id/backgroundAnimation"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@mipmap/ic_launcher" />

    <com.google.android.gms.common.SignInButton
        android:id="@+id/login_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/logo" />
</androidx.constraintlayout.widget.ConstraintLayout>