description of code of birthday

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_margin="8sp"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.sandeep.birthdaycake1.MainActivity">


    <TextView
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight=".3"
        android:id="@+id/To"
        android:textSize="25sp"
        android:textColor="#f525"
        android:text="Happy Birthday Kuldeep!!"/>

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="2"
        android:id="@+id/cake"
        android:scaleType="centerCrop"
        android:src="@drawable/cake"/>

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="0dp"
        android:layout_weight=".2"
        android:id="@+id/from"
        android:textSize="30dp"
        android:textColor="#f525"
        android:layout_gravity="right"
        android:text="from: Sandeep" />

</LinearLayout>