05 Lifecycle

• Demonstrate your app iterating through the Activity Lifecycle.

• The real point of the lab:  Familiarize yourself with when each of the events is triggered!!!

Assignment: Show the number of times that each method of the activity lifecycle has been reached.

• You are to make an app that displays how many times each of the required methods have been reached (two sets of data)

  • Set 1: how many times each method has been called in this particular run. Each counter will reset to zero when you restart the app

  • Set 2: how many times each method has been called, for as long as the app has been installed on your phone (i.e. save the numbers in SharedPreferences).

  • Required methods: 

    • onCreate() 

    • onStart() 

    • onResume() 

    • onPause() 

    • onStop() 

    • onRestart() 

    • onDestroy()

• Demonstrate the following:

  • Display the number of times each method was reached 

  • Display the number of times each method was reached since app installation

  • Store counts in the SharedPreferences

  • Include a meaningful and functional GUI element that allows you to reset the counters

  • Optional:

    • Create and Use a Custom Class with an appropriate name to store your variables (use alt+insert to generate getters and setters) - Look up GSON and JSON

      1. Converting lists of objects

      2. Using GSON/JSON to convert object to String

      3. Leveraging the Gson Library 

Get name of current method being executed in Java 

https://www3.ntu.edu.sg/home/ehchua/programming/android/Android_BasicsMore.html#zz-1.