Android developers are being called to action as the ecosystem prepares for a significant upgrade: the transition to a 16 KB memory page size. This enhancement is poised to deliver notable performance improvements, with expectations of a 5–10% boost across applications and games.
As this transition unfolds, developers must take proactive steps to ensure their applications align with the new architecture. Google has made it easier for developers to test their apps on devices equipped with this new memory page size by introducing the functionality as a developer option on its latest Pixel 8 and Pixel 9 smartphones. Furthermore, support from various Android OEMs, including Samsung, Xiaomi, and vivo, is anticipated in the near future.
Preparing for Android’s 16 KB era
For those developing apps with native code, adjustments will be necessary, but the process is expected to be more seamless than the previous shift from 32-bit to 64-bit architecture. Developers using Kotlin or Java exclusively can breathe a sigh of relief, as their applications will continue to function without modification.
However, for those working with native code or developing SDKs and libraries, some preparatory work is essential:
- For SDK developers: It is crucial to ensure that SDKs and libraries are fully compatible with the 16 KB memory page size. Early testing will enable third-party developers to implement necessary updates promptly. Registering for the Play SDK Console is highly recommended to keep abreast of future platform changes.
- For app developers without native code: Applications that do not utilize native code will benefit from immediate compatibility. No rebuilding is required—simple testing will suffice to confirm functionality on 16 KB page-size devices.
- For app developers using native code: A careful assessment and rebuilding of apps that incorporate native code is necessary. Here’s a concise three-step guide to navigate this process:
- Upgrade your tools: Start by utilizing Android Gradle Plugin (AGP) version 8.5.1 or later, as these versions are optimized for the new 16 KB page size configuration when building APK files and App Bundles.
- Align native code: Ensure that your native code is compiled using NDK version r28 or later. It’s also important to eliminate any hardcoded references to
PAGE_SIZEto prevent compatibility issues. - Update SDKs and libraries: Review all external SDKs and libraries used in your app. Check for updates that support the 16 KB page-size format, and reach out to developers for assistance if necessary.
Ongoing testing is vital throughout this process to guarantee that applications operate smoothly on future Android devices.
Testing for Android 16 KB memory page compatibility
Google has simplified the validation process for 16 KB compatibility. Developers are encouraged to utilize emulators or virtual devices configured with 16 KB memory page sizes, in addition to standard 4 KB tests.
For hands-on testing, physical devices such as the Pixel 8/8 Pro (which will receive support starting with Android 15 QPR1) and future Pixel 9 models (beginning with Android 15 QPR2 Beta 2) can be leveraged. In the coming months, additional devices from other OEMs, including Samsung, will offer similar capabilities.
By proactively ensuring that applications do not hardcode assumptions regarding memory page sizes—such as a static reliance on a 4 KB size—developers can mitigate potential compatibility issues with the new architecture.
Preparing today for tomorrow’s Android
The decision to adopt a 16 KB memory page size sets the stage for significant advancements within the Android ecosystem. Immediate benefits include enhanced runtime performance and improved efficiency in memory management, ultimately leading to smoother and more engaging user experiences.
In the long run, this shift represents a pivotal step toward unlocking further innovations in mobile software development, while continuing to meet the growing demand for high-performance applications and games.
Google remains committed to providing developers with the resources and guidance necessary throughout this transition. Staying prepared is essential; by adopting these practices early, developers can ensure their applications maintain a competitive edge on next-generation Android devices.
The Android team encourages developers to begin the testing and updating process without delay. With the transition expected to gain momentum over the next few years, preparing now will help avoid any last-minute challenges.
See also: 2024 Developer Ecosystem: Shedding AI fears, improving DevEx
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