Android Program Development: (5) Introduction to screen components-5.1 View and ViewGroup

Activity contains views and ViewGroups ).
 
A View is a Widget that is displayed on the screen ). View Example: Button, TextView, and EditText ). Each View inherits from the android. view. View class.
 
A ViewGroup can contain one or more views. ViewGroup is a special View. It provides a layout that can be used to organize a series of View views.
 
 
Example of ViewGroups: LinearLayout and FrameLayout. Each "ViewGroup" inherits from the base class android. view. ViewGroup.
 
Android provides the following ViewGroups:
 
LinearLayout
AbsoluteLayout
TableLayout
RelativeLayout
FrameLayout
ScrollView
 
In the following tutorials, We will detail each ViewGroup. Note that one or more different viewgroups must be used together when creating the UI.
From manoel's column