Homework 1

Task 1 - Celsius-Fahrenheit converter

• Create an application that converts user-entered Celsius values to Fahrenheit and vice versa.
• Use EditText to get user input ( setText() and getText() methods of EditText are helpful) (1pt)
• Use Click listeners to make the application interactive (1 pt)
• The application must define different XML layouts for portrait (norma) and landscape modes. ( 1.5 pts)
  • Portrait mode should be defined with LinearLayout
  • Landscape mode should be defined with ConstraintLayout

Feel free to be creative about the exact design of the UI. Images are only provided as a reference

Task 2 - Observing lifecycle methods (1.5 pt)

Override the onPause, onResume, onStop, onDestroy methods as discussed in the lecture. With the help of logging, answer these questions:

• Which of the methods are called & in which order when:
  • Changing device orientation
  • Hitting the home button and returning to the application
  • Hitting the back button and re-opening the application
• What happens to the EditText and TextView elements in each of these 3 cases (assuming the user has already performed one conversion).

Write your answers as a comment to the submission