TextView and strings.xml: Android Programming

Move strings from the layout into strings.xml for internationalization, access a TextView via Java code, and have Java code read from strings.xml.

Builds on video: https://www.youtube.com/watch?v=aE5f1tV5nU4

1. Add a TextView, move text to strings.xml, change formatting.
2. Use Java to change the text on a TextView.
3. Use Java to load string from strings.xml and change text on TextView.

Uses a button for the demo, and briefly reviews an exception.