Out of curiosity, will we be able to hook into the...
# compose-androida
andrew
05/04/2023, 7:23 PMOut of curiosity, will we be able to hook into the predictive back animation system in compose?
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Stylianos Gakis
05/04/2023, 7:51 PMNot sure exactly what that means, but considering that the androidx.navigation which is for compose does support the predictive back gestures then I suppose the answer is yes?
Isn’t it all basically working around the OnBackPressedDispatcher, which you can retrieve in compose using LocalOnBackPressedDispatcherOwner?
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andrew
05/04/2023, 7:55 PMI mean the animation that you get between activities and Android 14, I know it's already technically supported under the hood
andrew
05/04/2023, 7:56 PMI.e. you can peek behind to the previous activity
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Stylianos Gakis
05/04/2023, 9:26 PMYes, but since androidx.navigation for compose already does this atm, I am not sure what you mean by “hook into the predictive back animation system in compose”. It’s probably me misunderstanding you here 🤔
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andrew
05/04/2023, 9:27 PMSee the screenshot above, I was in another screen in settings, but swiping back allows me to peek the previous screen
andrew
05/04/2023, 9:31 PMAre they two separate composables?
andrew
05/04/2023, 9:31 PMi.e. no activities?
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Stylianos Gakis
05/04/2023, 9:32 PMa
andrew
05/04/2023, 9:32 PMBecause this looks exactly like the activity transition 😛
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Stylianos Gakis
05/04/2023, 9:33 PMYeah I now remembered that we do still have some pesky activities lying around in this flow in our app, so I may be showing the wrong thing. And that I could be wrong this entire time. Gimme a sec 😵
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andrew
05/04/2023, 9:34 PMGotcha, because that transition is what I'd like to see between two composables using any arbitrary navigation library
andrew
05/04/2023, 9:34 PMHowever, I just realized, we're intercepting the event with the listener
andrew
05/04/2023, 9:34 PMSo this might need to be performed manually!
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Stylianos Gakis
05/04/2023, 9:40 PMI was just very confidently incorrect here ☠️ 🫢
We are using androidx navigation, and I had seen this behavior before in our app, so in my brain I was like yes, it works. But I forgot that that transition was still between activities right now.
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Ian Lake
05/04/2023, 9:51 PMIt was Activity 1.8.0-alpha01 that added Android 14's new progress APIs to
OnBackPressedCallbackIan Lake
05/04/2023, 9:54 PMThere's three bits remaining to be done:
1.
BackHandlerAnimatedContenttargetStateprogressBackHandlerNavHostBackHandlerAnimatedContenta
andrew
05/04/2023, 10:20 PMThis is exciting! Thank you for the update Ian!
andrew
05/04/2023, 10:20 PMGlad to hear it gets first class support!
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Stylianos Gakis
05/06/2023, 11:29 PMWhat’s the status on some
AnimatedContenta
Alex Vanyo
05/07/2023, 7:38 PM1 and 2 can be achieved from the Activity 1.8 APIs with a bit of work, to a pretty nice effect. This is nothing official though, just me independently experimenting with the APIs:
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andrew
05/07/2023, 7:38 PMThat is awesome 😎😎
andrew
05/07/2023, 7:39 PMImagine with official API support
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Ian Lake
05/07/2023, 7:41 PM1 is just convenience at the Activity Compose layer, the underlying layer is indeed already there. And yep, if you pick a different layer than AnimatedContent, the underlying Compose animation APIs can already be driven by gestures
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andrew
05/07/2023, 7:42 PMI figure as much, but having high level APIs for convenience makes it accessible for everyone, too. I definitely don't mind digging for now, seeing that it is in fact possible!
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Arkadii Ivanov
10/08/2023, 12:51 PMWondering, what is the status of the predictive back gesture with navigation-compose currently?
Arkadii Ivanov
10/08/2023, 2:20 PMSeems like this is the tracking ticket: https://issuetracker.google.com/issues/273554698
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Ian Lake
10/08/2023, 3:25 PMThe
SeekableTransitionStateAnimatedContent👍 1
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