Target Android 16

[seadowg]

The key changes we need to make here:

• Remove usage of windowOptOutEdgeToEdgeEnforcement and adapt app for edge-to-edge layout
• Check if we support predictive back throughout the app and opt out if not
• Remove usages of the screenOrientation attribute and setRequestedOrientation calls

These will most likely all result in behaviour changes that will require discussion/follow up.

[lognaturel]

We expect that this will be required in August 2026 unless Google changes their schedule, right? Has there been an indication of a schedule change for required target version?

[seadowg]

We expect that this will be required in August 2026 unless Google changes their schedule, right? Has there been an indication of a schedule change for required target version?

Yes that's correct: https://android-developers.googleblog.com/2024/10/android-sdk-release-update.html. The plan will still be that this change shouldn't be required until August 2026 (given Android 16 will be the "major" release for 2025). However, I do think we'll want to discuss/plan for how we approach the bigger issues here (edge-to-edge mainly) over the next year and a half(ish).

[lognaturel]

I really thought there was some hope that the Android team would quietly scrap the edge-to-edge requirement! Alas...

[seadowg]

I'm going to write up a full post about it, but I think we can avoid having to actually account for edge to edge with a helper like this:

object EdgeToEdge {

    @JvmStatic
    fun Activity.avoidEdgeToEdge() {
        ViewCompat.setOnApplyWindowInsetsListener(window.decorView.findViewById(android.R.id.content)) { v, windowInsets ->
            val insets = windowInsets.getInsets(WindowInsetsCompat.Type.systemBars())
            v.updateLayoutParams<ViewGroup.MarginLayoutParams> {
                topMargin = insets.top
                bottomMargin = insets.bottom

                leftMargin = insets.left
                rightMargin = insets.right
            }

            WindowInsetsCompat.CONSUMED
        }
    }
}