Is it possible to decrease swipe sensitivity for `...

# compose

[Matija Sokol]

Is it possible to decrease swipe sensitivity for Pager? In my case, Pager item contains LazyColumn so there is horizontal Pager swipe and vertical LazyColumn scroll conflict. This is common problem which is easy to fix in View system by overriding touch slop property in ViewPager. Is same possible in Compose?

[Albert Chang]

You can provide your own LocalViewConfiguration with touchSlop overridden.

[Matija Sokol]

I tried something like this but still not working as expected (there is still conflict between horizontal/vertical scroll):

val viewConfiguration = LocalViewConfiguration.current
val updatedViewConfiguration = remember(viewConfiguration) {
  object : ViewConfiguration by viewConfiguration {
    override val touchSlop: Float
      get() = viewConfiguration.touchSlop * 3
  }
}

Box(modifier = Modifier.fillMaxSize()) {
  CompositionLocalProvider(
    LocalViewConfiguration provides updatedViewConfiguration,
  ) {
    Pager(...)
    }
  }

And then override it again inside page where LazyColumn is defined:

val viewConfiguration = LocalViewConfiguration.current
val updatedViewConfiguration = remember(viewConfiguration) {
    object : ViewConfiguration by viewConfiguration {
      override val touchSlop: Float
        get() = 5f // decrease for higher sensitivity
    }
  }

HorizontalPager(
    state = pagerState,
    key = ...,
) { index ->
    CompositionLocalProvider(
      LocalViewConfiguration provides updatedViewConfiguration,
    ) {
         LazyColumn(...)
    }
  }

[Albert Chang]

1. You should use the original value inside the pager instead of a fixed value.
2. What do you mean by “conflict”? If you still feel the sensitivity is too high, just increase the value for the pager. This works in the same way as overriding touch slop of ViewPager.

[Matija Sokol]

By "conflict" I mean that often vertical scroll triggers Pager and not LazyColumn scroll. That is a reason why I want to decrease Pager sensitivity.

But with this approach (using CompositionLocalProvider), when I decrease Pager sensitivity, I also change sensitivity for LazyColumn since LazyColumn is a child of a Pager item.

Do you have any suggestion to fix that?

[Albert Chang]

As I suggested you should set the touch slop to the original value inside the pager.

[लातों वाला भूत]

@Matija Sokol Were you able to get a solution for this?

[Matija Sokol]

@लातों वाला भूत I didn't resolve this.