Activity LifeCycle Flashcards
1
Q
what is an activity lifecycle
A
Different states an activity goes through
2
Q
onCreate
onStart
onResume
A
When activity is lauched, its the first method getting called. Its like a constructor of a class When user can see the screen, onStart is called When screen is ready to interact with the user, then its onResume
These 3 methods get called so quickly that as a end user you dont come to know
3
Q
onPause
onStop
onDestroy
A
onPause - when part of app is visible but in background
onStop - when activity is not visible to user
onDestroy - when activity is killed
when we minimize - onPause and onStop is called
4
Q
onRestart
A
when we go back to the activity
5
Q
usecase 1
A
when we start 2nd activity from 1st activity following is the sequence of calls a1 - onPause a2 - onCreate a2 - onStart a2- onResume a1- onStop
6
Q
usecase2
A
when we move back to A1 A2 onPause A1 onRestart A1 onStart A1 onResume A2 onStop A2 onDestroy
7
Q
usecase3
A
screenlock
onPause
onStop
8
Q
usecase4
A
when screen lock is opened
onRestart
onStart
onResume
9
Q
usecase5
A
pressing the home button
onPause
onStop
10
Q
usecase 6
A
when resuming the activity
onRestart
onStart
onResume
11
Q
usecase 7
A
killing app
onPause
onStop
onDestroy
12
Q
usecase 8
A
Setting Permissions
