activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    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"
    tools:context="com.android.birthdayapp.MainActivity">
    <ImageView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:scaleType="centerCrop"
        android:src="@drawable/androidparty"/>
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Happy Birthday Nishu!"
        android:textColor="@android:color/white"
        android:textSize="36sp"
        android:padding="5dp"
        android:fontFamily="sans-serif-light"/>

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentRight="true"
        android:text="From Pulkit!"
        android:textSize="36sp"
        android:textColor="@android:color/white"
        android:padding="20dp"
        android:fontFamily="sans-serif-light"/>
</RelativeLayout>