This document provides an introduction to developing Android apps. It discusses key concepts like fragments, which are modular containers that can have their own user interfaces. It also covers adding list items with textviews, responsive design for different screen sizes using layout managers like linear and relative layout, and the differences between scrollview and listview. The recap section summarizes some of the new concepts covered, such as Android studio, SDK targets, emulators, gradle, activities, fragments, views, layouts, listviews, and adapters.

1. Welcome to Developing Android Apps

2. What about You ? Ask your self….

3. Our App ???

4. Starter Code

6. Creating the User Interface
● Fragments are modular containers within your activity
● Fragments can also have the own UIs
You can use the visual editor to create your layouts

7. Adding ListItem
1. Create a layout file called list_item_forecast
2. Define a textview as the rootview
3. then assign id as list_item_forecast_textview
4. Give it a minimum height so that it not too short to click on
5. then vertically center the text within the item

9. Introducing Responsive Design
We need to build for Different Screen Sizes.
You app UI should scale according to different screen sizes.
Hence the reason Abosolute Layout was deprecated in favor of Layouts like
Linear Layout, Relative Layout and GridLayout.
They dynamic adapt to any screen size following the principles of Reponsive
Design

10. Layout Managers
The all extend the ViewGroup class

15. ScrollView Vs ListView
ScrollView is often used to contain a vertically oriented LinearLayout.

17. ListView and Recycling
Creates items enough to fit the screen adds two on either side off the screen

19. RECAP
New Concepts
● Android Studio
● SDK - Target and Minimum
● Emulators vs. Real Devices
● Gradle
● Application
● Activity
● Fragment
● Views and ViewGroups
● Views and XML layouts
● ListView
● Adapter