Gestures in Jetpack Compose

[@AndroidDevelopers]

Subscribe to Android Developers → goo.gle/AndroidDevs

[@aymnand3215]

‏‪0:10‬‏ ‏‪0:12‬‏

[@wendyflowers9458]

0:16 0:16

[@Empty3Stream]

It's very informative, is the reusable sources for transformable 1 st example? Pinch, rotate, resize, Offset?🎉

[@chakflying1]

Thank you for explaining this magical feature in Google Photos 👍

[@abdonasr1222]

Very detailed video about Gesture APIs capabilities and use cases, thanks for this ♥

[@AndroidDevelopers]

Thank you for watching! We’re glad you found the video helpful.

[@tch.777]

Amazing video, amazing explanation, I really enjoyed it, I did amazing things with this information, thank you very much, please keep making videos about this!!!🙏

[@AbdallahMehiz]

detectTransformGestures consumes other vertical and horizontal drag gestures if defined before it

[@ananthababu8272]

Great Teaching with Good use cases 👌

[@AndroidDevelopers]

Thank you! We appreciate the feedback.

[@paulobusato2]

So, that's why they are called expert. Awesome!

[@arvindkumar72446]

I will just say one thing. You are amazing.

[@truepicksyt3323]

Excited to watch this 😀

[@rly_]

Just in time video 😮. I'm going to use it in couple of days ❤

[@dewetvanrooyen8458]

So complicated I am super confused . Need to watch it a few times it would have been nice if this was a live demo showing us the steps while coding and testing the app.

[@Maarttttt]

I feel very limited that, in Compose, TouchIntercept nodes seem to hoard all pointer events for itself until the pointer is up again. Often I'd like multiple components to respond to pointer events at the same time.

[@JolandaVerhoef]

If you handle events yourself (instead of using gesture recognizes), you can choose not to consume events, in which case they are forwarded to the next node.

[@Maarttttt]

@@JolandaVerhoef Does not work when using pointerInput->awaitEachGesture. All events are still taken by one component. Perhaps it's a bug in SuspendPointerInputElement. (My previous comment was deleted???)

[@xncola]

How do the detectGestures function work if my image is in a horizontal pager for example? Wouldn't it overlap with the "swipe" gesture ? How can we detect if we should swipe or pan inside a zoomed image ?

[@MrYoutruber]

yeah, my horizontal pager stopped scrolling after adding pinch to zoom

[@MrYoutruber]

UPD: if I apply zoom to the HorizontalPager instead of the Image both gestures work but I need to reset the zoom when the page changes

[@xncola]

@@MrYoutruber can you swipe while you are in a zooming state ?

[@MrPaulOpenshaw]

Thanks for video!

[@JohnSchizas-f2g]

Amazing Video. Thank you very much !!!!!!! Keep up with great job.

[@MartinusKelimpungan]

Does Jetpack Compose has built-in touch gesture for drag and drop for lazy list like RecyclerView did?

[@terttyssdf]

it's quite informative,, could you share the link for the photos as well

[@SuperTechGuy32]

Cool

[@RaghavSharma-nt3hr]

Wow! It's always a delight to understand concepts from the experts themselves. Thanks ❤

[@hxrin3748]

How does the grid layout handle scrolling when we're dragging over it?

[@jolandaverhoef7674]

Great question! It was a bit too much to explain in this video, but the sample code contains this behavior. It basically sets some state when the pointer is close to an edge, and that state is used to periodically update the scroll state of the grid.

[@psytoolkit]

This does not work as the modifier .pointerInput seems to want parameters in the brackets but that is not explained?

[@jolandaverhoef7674]

True, for the sake of time I did not go into much detail on that parameter. You need to pass a key. When the value of this key parameter changes, the pointer input block is re-executed. This is quite a common pattern (e.g. also used by LaunchedEffect)

[@jersn5560]

I am confused, I observed this behavior myself, there is no way for a compose to prevent the propagation of event any further down the heirarchy. So why on the video it says that the PhotoItem consumes the event. How?

[@amsavarthanlv5667]

Look at the internals of combined clickable you will find that the gesture detector attached to it consumes the event by default

[@george_sepetadelis]

Interesting

[@andrewdunbar828]

Does this imply that double-tap is not a gesture?

[@bhanubhattarai13]

It is one of many tap gestures viz long press, double tap, tap, etc.

[@andrewdunbar828]

@@bhanubhattarai13 Ah that makes sense. I was thrown by the definition of a gesture as a press event followed by a series of pointer events and finally a release event. (Sorry I probably used the wrong terms there.)

[@withKaaveh]

Please remove remote clicking in editing video 😅

[@j2shoes288]

Still very poor. Imagine you want a way to know if a user scrolling or pressing, and the PISS POOR SDK doesn't have the abililty to know the difference, since the scroll will trigger the press event.

[@robchr]

This is awesome!