In a constraintLayout, how can I guarantee that on...

# compose

[Philip Blandford]

In a constraintLayout, how can I guarantee that one element will be underneath the others? Up until alpha05 I was wrapping them in Surfaces and setting the elevation, which didn't feel ideal but it worked. Now in alpha06 that doesn't work any more and they just appear in an order that varies with refreshes.

[sante]

You should use a Box() for treating components like a stack, it's its default behavior

[sante]

It takes into account the order in which you call children composables so each one is above the previous one

[Philip Blandford]

I still need the ConstraintLayout behaviour though

[sante]

You can use constraintLayout as a child

[Philip Blandford]

OK, but say I need to constrain item1 to a guideline, but have it underneath item2 which is constrained to the same guideline?

[Andrey Kulikov]

it is a bug that ConstraintLayout is not using the order in which you compose items as the drawing order, which is fixed here: https://android-review.googlesource.com/c/platform/frameworks/support/+/1471842. to be released in the next release

[Andrey Kulikov]

in the meantime you can apply different Modifier.zIndex() for your items to define the drawing order

[Philip Blandford]

Ah - zIndex is just what I need, thanks!