Activity Lifecycle

Question 1

onCreate

Answer 1

In the creation state, activities load the static user interface elements and allocate system resources such as the display device, network device, and other resources required for the application.

Question 2

onStart

Answer 2

After creation by the onCreate method, an activity enters the started state. It becomes visible and ready to handle user interaction.

Question 3

onResume

Answer 3

In the resumed state, all actions are performed, such as user input, drawing new user interface elements according to user input, and so on.

Question 4

onPause

Answer 4

In the paused state, the application is taken to the background, or another application is started and brought to the front.

Question 5

onStop

Answer 5

In the stopped state, the application is totally invisible and in a sleeping state.

Question 6

onDestroy

Answer 6

The destroyed state means that all processes are killed and all device resources released.

Question 7

onSaveInstanceState

Answer 7

In this function it is possible to save activity state ina Bundle to be restored in the onCreate(Bundle) method