Is there a way for the compose inset APIs to give ...
# compose-androids
Stylianos Gakis
12/09/2023, 3:43 PMIs there a way for the compose inset APIs to give you the height that the keyboard would've gotten if it was shown, but before it's ever shown in the first place?
Basically a way to know the IME size in advance in order to place things accordingly for when the IME actually does show and not get any size animations after the fact.
Stylianos Gakis
12/09/2023, 3:44 PMI had this interaction in mind, and I can't understand how else this'd be done besides getting the IME insets before the IME ever shows in the first place.
Notice how the view which allows one to add pictures and whatnot is already perfectly sized for the input field to not have to move vertically after the keyboard shows or disappears
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ephemient
12/09/2023, 4:31 PMI feel like that won't be possible given that keyboards can resize themselves at will
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Stylianos Gakis
12/09/2023, 6:07 PMYeah, so I am really really curious, what are they doing here to get this working in the way it does?
Stylianos Gakis
12/09/2023, 6:09 PMscreen-20231209-190841.mp4
Stylianos Gakis
12/09/2023, 6:09 PMWell just tested by resizing the keyboard in two ways, changing to one handed mode and by going to an emoji view, and it does seem like it actually tries to remember the last known IME size
Stylianos Gakis
12/09/2023, 6:10 PMWhat I wonder then is how they do it on first app launch, since the IME was never shown at that point
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ephemient
12/09/2023, 6:11 PMperhaps they just hard-code an initial guess which matches the most common keyboard sizes
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sindrenm
12/09/2023, 6:11 PMIf you resize the keyboard in another app and then open this app again, does it then know the new size before opening it?
think smart 2
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Stylianos Gakis
12/09/2023, 6:52 PMHehe nice test scenario. It does in fact not update until it sees the new size itself.
This video is after I opened this view, went to another app, changed to a short one handed mode, then comes what you see in the video, where it jumps to the new size.
So yeah, they do some sort of guessing, and then they store in memory the last known IME size, that must be it.
Thanks for helping me in this investigating job 🕵️🔎
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sindrenm
12/09/2023, 7:06 PMYeah, then that seems likely. Don't know much about IMEs, but maybe there's a “recommended default size” or some guidelines that their initial guess is based on. Interesting case!
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ephemient
12/09/2023, 7:06 PMnot really afaik, but if you just assume most users are using Gboard then you're pretty close
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ephemient
12/09/2023, 7:06 PMI wonder what happens with their UI if you use a floating keyboard, or a super slim one like https://minuum.com/
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Stylianos Gakis
12/09/2023, 7:14 PMNot a super smooth experience with a floating keyboard
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sindrenm
12/09/2023, 7:15 PMYeah, although that behaviour makes sense, I guess.
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ephemient
12/09/2023, 7:15 PMmakes some sort of sense but I wouldn't want to emulate that behavior
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ephemient
12/09/2023, 7:17 PMI could probably pull out my Surface Duo and get even weirder keyboard scenarios that it doesn't handle
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efemoney
12/10/2023, 9:04 AMAlso, late but, check out WindowInsets.imeSource & WindowInsets.imeTarget (latter is what youre looking for)
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Stylianos Gakis
12/10/2023, 10:32 AMI can't find that, but I can fine imeAnimation(Source|Target).
But these https://cs.android.com/androidx/platform/frameworks/support/+/androidx-main:compose/foundation/foundation-layout/src/androidMain/kotlin/androidx/compose/foundation/layout/WindowInsets.android.kt;l=415 imply that they only tell you what the IME size will settle to after the animation is over. Aka if the keyboard isn't showing yet, they'll both just be == 0 anyway. Only on the first frame of the keyboard showing we'll get the first value.
Can't test atm as I am afk, but that's what I understood from the docs here.
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efemoney
12/10/2023, 10:32 AMYeah thats it, sorry, forgot what it was called.
Tells you, for the opening/closing of the keyboard, its starting & ending position
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Stylianos Gakis
12/10/2023, 10:35 AMYes, but on app startup those still don't help you with the initial height guess right, you still need to use something else, which might just be guessing is what we assumed further up in this thread
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efemoney
12/10/2023, 10:36 AMHmm, I see, so you need the value for actual layout of your View? Not just for when the keyboard is open 👍🏾 Then it makes sense what you mentioned above
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Stylianos Gakis
12/10/2023, 4:29 PMYeah, as the video shows in the first reply in this thread.
Well, I don't really need it, I was just really curious is all
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