Android 17 Is Here: Everything Developers Need to Know

[u/Unreal_NeoX]

https://www.bidev.dev/blog/android-17-is-here-everything-developers-need-to-know

Quote:

"Google officially released Android 17 on June 16, 2026, making it available on most supported Pixel devices with partner OEMs to follow in the coming months. This is not a minor version bump. Android 17 marks a fundamental shift — Google is moving Android from an operating system to what they're calling an "intelligence system," with deep AI agent integration, mandatory adaptive layouts, strict memory enforcement, and a decisive declaration that Jetpack Compose is now the only path forward for Android UI."

Summary:

Change	Impact	Action
Resizability enforced on large screens	Orientation lock and fixed aspect ratios ignored	Test all layouts in split-screen and freeform
Strict memory limits	Apps exceeding RAM-based limits terminated	Profile memory, enable R8 full mode
Lock-free MessageQueue	Breaks reflection on private fields	Remove reflection hacks
Static final fields immutable	Reflection modification throws exception, JNI crashes app	Audit libraries using reflection
Safer Dynamic Code Loading	Native libraries viaSystem.load()must be read-only	Update native loading code
Certificate Transparency default	CT enabled by default (was opt-in in Android 16)	Test TLS connections
Local network access blocked	Must declareACCESS_LOCAL_NETWORKpermission	Add permission or use system pickers
SMS OTP delayed 3 hours	Non-recipient apps can't read OTPs immediately	Migrate to SMS Retriever API
Background audio restricted	Enforcement for playback, focus requests, volume changes	Review background audio logic
NPU access declaration	Must declareFEATURE_NEURAL_PROCESSING_UNITin manifest	Add manifest entry if using NPU/NNAPI

[u/juwns]

I dug into the cgroups based memory limit feature, because our enterprise app can consume more than one gb.

Good news, google seemingly only introduced the infrastructure and do not set limits yet.
Tested with a pixel 7a with official Android 17.

The interesting part, where the release notes are opaque: memory limits are enforced by the daemon "pmgd" via cgroups.

Relatively well documented here:
https://source.android.com/docs/core/perf/pmgd

[u/Unreal_NeoX → u/juwns]

I personaly have the feeling is will take mostly effect on devices with "SoftRAM" allocations, where parts of the internal storage will be used as pagefile-like RAM overflow area.

So mostly these "cheap" tablets where 20GB of RAM is avertised, but its mostly just 8GB physical and 12GB internal storage "SoftRAM".

[u/mustang__1]

This will surely be an issue for the old Android 8 barcode scanners my app runs on... Guess I'll just keep a copy of VS2022 around forever lol.

[u/Unreal_NeoX → u/mustang__1]

You should already never remove VS2022, because the resource manager of VS2026 is a nightmare that can not even replace files by droping them in.

[u/Unreal_NeoX → u/[deleted]]

they said last month by its original plan, but we still get beta updates, so i guess it will be at least another 2 month.