main_res_layout_activity_start.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
    android:background="@drawable/back2"
    tools:context="com.example.harsh.freechat.StartActivity">
    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="113dp"
        android:text="@string/welcome_to_freechat"
        android:textColor="@android:color/white"
        android:textSize="35sp"
        android:textStyle="bold" />

    <Button
        android:id="@+id/start_reg_btn"
        android:layout_width="wrap_content"
        android:layout_height="55dp"
        android:layout_alignEnd="@+id/textView"
        android:layout_alignParentBottom="true"
        android:layout_marginBottom="46dp"
        android:layout_marginEnd="40dp"
        android:background="@color/colorAccent"
        android:padding="15dp"
        android:text="@string/sign_up"
        android:textColor="@android:color/white"
        android:textSize="20sp" />

    <Button
        android:id="@+id/start_login_btn"
        android:layout_width="wrap_content"
        android:layout_height="55dp"
        android:layout_alignBaseline="@+id/start_reg_btn"
        android:layout_alignBottom="@+id/start_reg_btn"
        android:layout_alignStart="@+id/textView"
        android:layout_marginStart="42dp"
        android:background="@color/colorAccent"
        android:padding="15dp"
        android:text="@string/log_in"
        android:textColor="@android:color/white"
        android:textSize="20sp" />
</RelativeLayout>