Tampilan 1

<?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:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.rachmaliadewi.app.MainActivity">

    <Button
        android:id="@+id/button"
        android:layout_width="180dp"
        android:layout_height="118dp"
        android:layout_marginBottom="16dp"
        android:layout_marginTop="16dp"
        android:onClick="mulai"
        android:text="Mulai"
        android:textSize="30dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.29000002" />

    <Button
        android:id="@+id/button2"
        android:layout_width="172dp"
        android:layout_height="67dp"
        android:text="Tutorial"
        android:textSize="24dp"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        android:layout_marginTop="16dp"
        app:layout_constraintBottom_toBottomOf="parent"
        android:layout_marginBottom="16dp"
        app:layout_constraintVertical_bias="0.613" />

    <Button
        android:id="@+id/button4"
        android:layout_width="162dp"
        android:layout_height="53dp"
        android:text="Masuk"
        android:textSize="20dp"
        android:layout_marginLeft="16dp"
        app:layout_constraintLeft_toLeftOf="parent"
        android:layout_marginRight="16dp"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        android:layout_marginTop="16dp"
        app:layout_constraintBottom_toBottomOf="parent"
        android:layout_marginBottom="16dp"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintVertical_bias="0.887" />

    <Button
        android:id="@+id/button6"
        android:layout_width="162dp"
        android:layout_height="53dp"
        android:text="Daftar"
        android:textSize="20dp"
        app:layout_constraintBottom_toBottomOf="parent"
        android:layout_marginBottom="16dp"
        android:layout_marginLeft="16dp"
        app:layout_constraintLeft_toLeftOf="parent"
        android:layout_marginRight="16dp"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        android:layout_marginTop="16dp"
        app:layout_constraintHorizontal_bias="1.0"
        app:layout_constraintVertical_bias="0.887" />
</android.support.constraint.ConstraintLayout>