Difference between View and ViewGroup in Android

Question

What is the difference between a View and a ViewGroup in Android programming

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A ViewGroup is a special view that can contain other views  called children   The view group is the base class for layouts and views containers  This class also defines the ViewGroup LayoutParams class which serves as the base class for layouts parameters    View class represents the basic building block for user interface components  A View occupies a rectangular area on the screen and is responsible for drawing and event handling  View is the base class for widgets  which are used to create interactive UI components  buttons  text fields  etc    Example   ViewGroup  LinearLayout   View  TextView    Reference

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In simple words View is the UI element which we interact with when we use an app like button edit text and image etc View is the child class of Android view View While View group is the container which contains all these views inside it in addition to several othe viewgroups like linear or Frame Layout etc  Example if we design  amp  take the root element as Linear layout now our main layout is linear layout inside it we can take another view group  i e another Linear layout   amp  many other views like buttons or textview etc

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A View object is a component of the user interface  UI  like a button or a text box  and it s also called widget   A ViewGroup object is a layout  that is  a container of other ViewGroup objects  layouts  and View objects  widgets   It s possible to have a layout inside another layout  It s called nested layout but it can increase the time needed to draw the user interface   The user interface for an app is built using a hierarchy of ViewGroup and View objects  In Android Studio it is possible to use the Component Tree window to visualise this hierarchy   The Layout Editor in Android Studio can be used to drag and drop View objects  widgets  in the layout  It simplifies the creation of a layout

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ViewGroup is itself a View that works as a container for other views  It extends the functionality of View class in order to provide efficient ways to layout the child views   For example  LinearLayout is a ViewGroup that lets you define the orientation in which you want child views to be laid  that s all you need to do and LinearLayout will take care of the rest

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Viewgroup inherits properties of views and does more with other views and viewgroup   See the Android API  http   developer android com reference android view ViewGroup html

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Below image is the answer  Don t take it too complex

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View is a basic building block of UI  User Interface  in android  A view is a small rectangular box which responds to user inputs  Eg  EditText  Button  CheckBox  etc    ViewGroup is a invisible container of other views  child views  and other viewgroups  Eg  LinearLayout is a viewgroup which can contain other views in it   ViewGroup is a special kind of view which is extended from View as its base class  ViewGroup is the base class for layouts   as name states View is singular and the group of Views is the ViewGroup   more info  http   www herongyang com Android View-ViewGroup-Layout-and-Widget html

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A ViewGroup describes the layout of the Views in its group   The two basic examples of ViewGroups are LinearLayout and RelativeLayout   Breaking LinearLayout even further  you can have either Vertical LinearLayout or Horizontal LinearLayout   If you choose Vertical LinearLayout  your Views will stack vertically on your screen   The two most basic examples of Views are TextView and Button   Thus  if you have a ViewGroup of Vertical LinearLayout  your Views  e g  TextViews and Buttons  would line up vertically down your screen     When the other posters show nested ViewGroups  what they mean is  for example  one of the rows in my Vertical LinearLayout might actually  at the lower level  be several items arranged horizontally   In that case  I d have a Horizontal LinearLayout as one of the children of my top level Vertical LinearLayout   Example of Nested ViewGroups  Parent ViewGroup   Vertical LinearLayout  Row1  TextView1 Row2  Button1 Row3  Image TextView2 Button2   lt -- Horizontal Linear nested in Vertical Linear Row4  TextView3 Row5  Button3

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in ViewGroup you can add some other Views as child  ViewGroup is the base class for layouts and view containers

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View is the SuperClass of All component like TextView  EditText  ListView  etc   while ViewGroup is Collection of Views TextView  EditText  ListView  etc     somewhat like container

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View   View objects are the basic building blocks of User Interface UI  elements in Android  View is a simple rectangle box which responds to the user s actions  Examples are EditText  Button  CheckBox etc   View refers to the android view View class  which is the base class of all UI classes     ViewGroup   ViewGroup is the invisible container  It holds View and ViewGroup For example  LinearLayout is the ViewGroup that contains Button View   and other Layouts also  ViewGroup is the base class for Layouts

[android] Difference between View and ViewGroup in Android

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