<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">

    <Button
        android:id="@+id/button"
        android:layout_width="187dp"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_marginStart="48dp"
        android:layout_marginBottom="437dp"
        android:layout_toEndOf="@+id/text"
        android:onClick="Ganesh"
        android:text="Wykłady"
        android:textColor="@color/colorPrimary"
        app:layout_constraintTop_toTopOf="parent"
        tools:layout_editor_absoluteX="168dp" />

    <Button
        android:id="@+id/button2"
        android:layout_width="187dp"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_marginStart="48dp"
        android:layout_marginBottom="325dp"
        android:layout_toEndOf="@+id/text"
        android:onClick="Ganesh"
        android:text="Laboratorium"
        android:textColor="@color/colorPrimary"
        app:layout_constraintTop_toTopOf="parent"
        tools:layout_editor_absoluteX="168dp" />

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="JAVA 2019"
    android:id="@+id/text"
    tools:layout_editor_absoluteY="8dp"
    tools:layout_editor_absoluteX="8dp" />

    <Button
        android:id="@+id/button3"
        android:layout_width="187dp"
        android:layout_height="wrap_content"
        android:layout_above="@+id/button2"
        android:layout_alignStart="@+id/button2"
        android:layout_marginStart="0dp"
        android:layout_marginBottom="-160dp"
        android:onClick="Ganesh"
        android:text="Quiz"
        android:textColor="@color/colorPrimary"
        app:layout_constraintTop_toTopOf="parent"
        tools:layout_editor_absoluteX="168dp" />

</RelativeLayout>