What is the difference between enterAnim & popEnterAnim & exitAnim & popExitAnim?
Pop is related to the back stack, I use back stack for helping understanding
e.g.
A
is showing on screen now, we are going to put B
on screen, then A
will Exit(Anim/transaction) from screen, B
will Enter to screen.
Now what’s going to happen if you tap back key/up button? Yes, the reverse happens. Which means B
is going to be replaced by A
.
B
is popped off the back stack and Exit from screen (Pop Exit)A
is entered to the view from the back stack (Pop Enter)
The Animate transitions between destinations documentation details the four types of animations:
- Entering a destination
- Exiting a destination
- Entering a destination via a pop action
- Exiting a destination via a pop action
"Entering" refers to the destination that is coming onto the screen, while "exiting" refers to the destination leaving the screen.
Therefore when you navigate from destination A
to destination B
, the entering destination B
will have the enterAnim
applied to it and the exiting destination A
will have the exitAnim
applied to it.
When the user hits the system Back button, going from B
back to A
, the reverse happens: the entering destination A
will have the popEnterAnim
applied to it and the exiting destination B
will have the popExitAnim
applied to it.