Android UI Design Basics

Uidesign, human-computer interaction, and practicality are a big topic and will not be discussed in depth in this book. Even so, it is important to have an accurate understanding of the UI when you create it.

 

Android introduces some new terms for similar programming terms, which will be described in the following chapters:

 

Shortviews

View is a basic UI class (and commonly known control or widget) in the visual interface element ). All the UI controls and layout classes are inherited from the view.

 

❑ Viewgroups

View group is an extension of view. It can accommodate multiple sub-views. By extending the viewgroup class, you can create a composite control composed of correlated sub-views. The viewgroup class can also be extended as the layout manager, such as linearlayout, to help you build the UI.

 

❑ Activities

Activity, which is described in detail in the previous chapter, represents a window or screen displayed to the user. Activity is the form in Android. To display the UI, you only need to specify view or layout for the activity.

 

Android provides some general UI controls, widgets, and layout managers.

 

Like most graphics applications, it is very likely that you need to extend and modify some standard controls-or create a combination or brand new controls-to provide your own functionality.