Guest list layout

<LinearLayout
    android:orientation="vertical"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">
 
    <TextView
        android:text="Guest List"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
 
    <TextView
        android:text="Kunal"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
 
</LinearLayout>

One parent view: LinearLayout
Two children views: TextView
Linear layout orientation: vertical Height and width: wrap content

Separate opening and closing tag used
Parent view is in Linear layout and Vertical orientation
Within it are 2 child TextViews
Width and Height of both parent and child views is set to automatically resize by the special code wrap_content

linearLayout is a parent view
TextView is a child

1. one parent view group
2. two child view

View group is a LinearLayout : parent
LinearLayout have orientation : vertical
LinearLayout have heigth and width : wrap_content

ViewGroup it's a element "LinearLayout".
The sentence indicates that the orientation of the childs contained within the ViewGroup, wil be aligned vertically.
The 2 childs elements are "TextView".

What the difference between linearLayout and textView

TextView

· What it is: A widget for displaying text.
· Purpose: Shows text on the screen (like labels, messages, titles).
· Analogy: A single picture frame that holds a photo (text).
· Example usage:

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Hello World!" />

LinearLayout

· What it is: A layout container for organizing other views.
· Purpose: Arranges child views in a single row (horizontal) or column (vertical).
· Analogy: A shelf that holds multiple picture frames (TextViews, Buttons, etc.) in a line.
· Example usage:

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">
    
    <TextView android:text="First Item"/>
    <TextView android:text="Second Item"/>
    <Button android:text="Click Me"/>
    
</LinearLayout>

Key Differences

Aspect TextView LinearLayout
Type View (widget) ViewGroup (container)
Purpose Display text Arrange other views
Children Cannot have child views Can contain multiple child views
Common Use Labels, messages, titles Organizing UI elements linearly