MOBILE APPLICATION DEVELOPMENT
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The document is a lecture on mobile application development focused on building an Android app, presented by Abubakar Ubaid. It covers essential concepts such as views, view groups, layout types, event handling, and the hierarchy of UI components. Key layout types discussed include ConstraintLayout, LinearLayout, and TableLayout, highlighting their specific use cases and attributes.
MOBILE APPLICATION DEVELOPMENT
- 1. MOBILE APPLICATION DEVELOPMENT LECTURE – 03 By: AbuBakar Ubaid
- 2. BUILD YOUR FIRST ANDROID APP By: AbuBakar Ubaid
- 3. LAYOUT & RESOURCES FOR THE UI Views, view groups, and view hierarchy The layout editor and ConstraintLayout Event handling Resources and measurements By: AbuBakar Ubaid
- 4. WHAT IS A VIEW? View subclasses are basic user interface building blocks ● Display text (TextView class), edit text (EditText class) ● Buttons (Button class), menus, other controls ● Scrollable (ScrollView, RecyclerView) ● Show images (ImageView) ● CheckBox ● RadioButton etc. By: AbuBakar Ubaid
- 5. Examples of VIEW subClass By: AbuBakar Ubaid Button EditText Slider CheckBox RadioButton Switch
- 6. VIEW ATTRIBUTES ● Color, dimensions, positioning ● May have focus (e.g., selected to receive user input) ● May be interactive (respond to user clicks) ● May be visible or not ● Relationships to other views By: AbuBakar Ubaid
- 7. WHAT IS A VIEW-GROUP? ViewGroup contains child views ● ConstraintLayout Positions UI elements using constraint connections to other elements and to the layout edges ● ScrollView Contains one element and enables scrolling ● RecyclerView Contains a list of elements and enables scrolling by adding and removing elements dynamically By: AbuBakar Ubaid
- 8. VIEW-GROUP for LAYOUTS Layouts ● are specific types of ViewGroups ● contain child views ● can be in a row, column, grid, table, absolute By: AbuBakar Ubaid
- 9. VIEW-GROUP for LAYOUTS By: AbuBakar Ubaid LinearLayout ConstraintLayout GridLayout TableLayout
- 10. COMMON LAYOUTS CLASSES ConstraintLayout: Connect views with constraints LinearLayout: Horizontal or vertical row RelativeLayout: Child views relative to each other TableLayout: Rows and columns FrameLayout: Shows one child of a stack of children By: AbuBakar Ubaid
- 11. HIERARCHY OF VIEWGROUPS AND VIEWS By: AbuBakar Ubaid ViewGroup Root view is always a ViewGroup View View View ViewGroup View View
- 12. HIERARCHY OF VIEWGROUPS AND VIEWS By: AbuBakar Ubaid
- 13. THANK YOU LECTURE – 03 “Build first Android App” By: AbuBakar Ubaid