Hello, <@UHAJKUSTU>, I'm currently making an app f...

# decompose

[Ozerov Max]

Hello, @Arkadii Ivanov, I'm currently making an app for iOs and I'm trying to use Predictive Back Gesture implementation from the documentation, which implements the Cupertino back swipe. But I ran into the following problem: if there is an element with horizontal scrolling on the screen (LazyRow for example), it stops scrolling normally because Modifier.handleBackGestures from PredictiveBackGestureOverlay is prioritized. Any ideas how to fix it?

[लातों वाला भूत]

I am looking to solve for the same @Arkadii Ivanov
Any help or sample would be greatly appreciated

[Arkadii Ivanov]

That's kind of the same behavior with Android. The gesture is always intercepted at the screen edges.

[लातों वाला भूत]

How can we set priority. For example pager should take precedence over the edge swiping
Same goes for lazy column
Like how it is for native iOS behaviour

[लातों वाला भूत]

Right now they interfere

[Arkadii Ivanov]

The pager shouldn't take priority, as it works the same on Android.

[Arkadii Ivanov]

There is no way currently. But you can copy the implementation of the overlay and try tuning it.

[Arkadii Ivanov]

If you have a full screen horizontally scrollable gallery of images, the user wouldn't be able to leave the screen at all. This behavior is by design.

[लातों वाला भूत]

I have tried and could not come up with something which would be similar to native iOS behaviour
Android allows only edge swiping while iOS allows mid page swiping too
So pager when swiped should intercept them until we have reached the first page where the back handler should intercept
This is the default behaviour in iOS

[Arkadii Ivanov]

I'm not sure if native iOS allows swiping in the middle of the screen. The Decompose overlay only detects at the edges, the width is customizable though.

[लातों वाला भूत]

It does. For example: Take a look at twitter app.
Search section. When left swiping between pages, the pager intercepts until we reach the first page
Then the back handler navigates

[Arkadii Ivanov]

That's custom behavior I believe. Similar how telegram implemented it on Android. I tried system settings on iOS, only edges are working.

[Arkadii Ivanov]

Decompose doesn't allow this sort of customizations at the moment. It always intercepts, same as on Android. This is to prevent blocking the user from leaving the screen, if there is a full screen horizontally scrollable widget.

[लातों वाला भूत]

Yeah I guess so. Slack Android app also has this same customised behaviour.
Wonder if its actually possible with decompose

[Arkadii Ivanov]

The only way is to copy and tune the overlay for your needs.

[लातों वाला भूत]

Got it. Thanks

[Arkadii Ivanov]

Related thread: https://kotlinlang.slack.com/archives/C03H3N51SKT/p1705382313685089?thread_ts=1705382313.685089&amp;cid=C03H3N51SKT

[Arkadii Ivanov]

I think this diff to overlay kind of works. Though, additional changes might be needed.

Untitled.diff

[लातों वाला भूत]

Let me try this