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Latest Mobile Dev Insights: iOS, Android, Cross-Platform

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MobilePro #172: All about Google I/O 2025, Material 3 Expressive, adaptive Android apps, OpenAI introduces Codex, and more…

Hi ,

Welcome to the 172nd edition of MobilePro, and it’s a Google I/O 2025 special! This week’s issue is packed with updates that mark a turning point for Android developers, from agentic AI to adaptive UIs and smarter app discovery:

🌐 Google Play adds topic pages, audio previews, and subscription tools: Discoverability gets a boost with interest-based topic pages and audio previews, while developers gain smarter monetization tools to retain and convert users.
🎨 Material 3 Expressive enhances UI with dynamic motion and color: Google’s new design language brings vibrant visuals and adaptable components that help apps feel more personalized and emotionally engaging.
📐 Adaptive app development becomes Android's new north star: With Android devices expanding across form factors, I/O emphasized adaptive-first design—ensuring your app works seamlessly with varying screens, input types, and availability modes.
🧠 Gemini comes to Android Studio with test generation and more: The Gemini 2.5 Pro model is now baked into Android Studio, enabling agentic test creation, smart suggestions, and experimental AI workflows—including support for image attachments.
📱 ML Kit GenAI APIs powered by Gemini Nano debut: Developers can now build on-device generative AI apps with Gemini Nano for real-time tasks, or tap into Gemini Pro and Imagen via Firebase AI Logic for cloud-enhanced use cases.

And in What’s Happening in AI?—OpenAI introduces Codex, an AI agent enhancing developer productivity. As always, stick around for our Developer Tip to boost your workflow and the Did You Know? section to learn about stagnant apps on the App Store!

Let’s dive in!

P.S.: If you have any suggestions or feedback, or would like us to feature your project on a particular subject, please write to us. Just respond to this email!

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📱 What's Happening in Mobile Development?

If there’s any major news in the world of mobile app dev in the last week, MobilePro has you covered.

Google I/O 2025

Google Play introduces topic pages, audio previews, and subscription tools: At Google I/O 2025, Google Play unveiled a suite of updates aimed at enhancing app discovery and developer tools. Key features include topic pages for interest-based app exploration, audio previews to engage users before download, and improved subscription management tools to streamline monetization and reduce churn.
Material 3 Expressive enhances UI with dynamic motion and color: Material Design introduces M3 Expressive, an evolution of its design system that emphasizes dynamic motion, vibrant color schemes, and adaptable components. It gives developers new tools to build more emotionally resonant and expressive apps.
Build adaptive Android apps: We risk losing a significant user base if apps aren't adaptive. With this in focus, adaptive app development took center stage at Google I/O this year. Key updates included building for the growing Android device ecosystem, adopting an adaptive-first mindset, ensuring app availability across devices, supporting diverse input methods, and more.
Gemini in Android Studio: You can now access the latest Gemini 2.5 Pro model directly in Android Studio, unlocking advanced Agentic AI capabilities to boost your productivity throughout the development lifecycle. Simply describe actions and assertions, and Gemini will generate and execute the corresponding tests for you. This release also includes a range of exciting updates—such as experimental AI features, support for image attachments in Gemini, and more.
On-device GenAI APIs as part of ML Kit help you easily build with Gemini Nano: A new ML Kit GenAI APIs powered by Gemini Nano for on-device tasks and enabled access to advanced models like Gemini Pro and Imagen via Firebase AI Logic for more complex use cases. Developers can explore these tools through documentation, sample apps, and sessions—like the Androidify app that turns selfies into Android robots.
Updates to the Android XR SDK: Exciting new updates were unveiled for Android XR at Google I/O, including Developer Preview 2 of the XR SDK and a growing device ecosystem. Alongside Samsung’s Project Moohan, new devices like XREAL’s portable XR headset are joining the lineup.
Jetpack Compose adds autofill, adaptive layouts, and Material 3 Expressive: At Google I/O 2025, Jetpack Compose introduced significant updates, such as autofill support, auto-sizing text, visibility tracking, and the animateBounds modifier for smoother animations, to enhance developer experience and UI capabilities. The release also brings Material 3 Expressive components and an adaptive layouts library to streamline development across various device types.
Android’s Kotlin Multiplatform announcements at Google I/O and KotlinConf 25: There’s been a wave of announcements around Android’s Kotlin and Kotlin Multiplatform at Google I/O. Highlights include experimental web/WASM support in Jetpack libraries, tooling enhancements for easier KMP integration, and comprehensive guidance through two new codelabs and more.

Apple

Apple aiming to revamp Siri with LLM architecture amid AI challenges: Apple is overhauling Siri with a new large language model-based architecture, aiming for more conversational and intelligent interactions. This "LLM Siri" initiative seeks to enhance Siri's capabilities by integrating generative AI, allowing it to synthesize information and potentially access web data for more comprehensive responses.
Apple expands accessibility across devices with labels, captions, and more: Apple is rolling out powerful new accessibility features across iPhone, Mac, Watch, and Vision Pro—including Magnifier for Mac, Live Captions on Apple Watch, and systemwide Accessibility Reader. The App Store will also display accessibility "nutrition labels" to help users make more informed choices.

Flutter

Fluttercon 2025 heads to Berlin with multiplatform, design-focused tracks: Fluttercon Europe 2025 lands in Berlin this September, co-located with droidcon Berlin. Expect deep-dive talks on multiplatform Flutter, rendering, and custom UIs—plus global networking and hands-on workshops. Registrations are open now.
Flutter 3.32.0 is out: Flutter 3.32.0 introduces several enhancements and fixes across its framework, engine, and tooling. Key updates include improved performance optimizations, enhanced support for foldable devices, and refined text rendering. Additionally, this release addresses various bug fixes and stability improvements to ensure a smoother development experience.

🤖 What’s Happening in AI?

AI is evolving fast—are you keeping up? MobilePro brings you key discussions, trends, and expert takes in one place.

OpenAI introduces Codex, an AI agent enhancing developer productivity: OpenAI has unveiled Codex, a cloud-based software engineering agent designed to assist developers by automating tasks such as writing features, fixing bugs, and running tests. Integrated into ChatGPT for Pro, Team, and Enterprise users, Codex operates within isolated environments, providing verifiable outputs and aligning with human coding styles.
AlphaEvolve: DeepMind’s AI agent revolutionizes algorithm design: DeepMind has introduced AlphaEvolve, a Gemini-powered AI agent that autonomously designs and optimizes advanced algorithms. By combining large language models with evolutionary techniques, AlphaEvolve has achieved breakthroughs in areas like matrix multiplication, data center scheduling, and chip design.

📚️ Latest in Mobile Development from Packt

MobilePro presents the latest titles from Packt that ought to be useful for mobile developers.

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Mobile App Development Tutorial — **Excerpt from .NET MAUI Cookbookby Alexander Russkov**

One of the obvious techniques to add more elements to a screen in .NET MAUI applications such that they fit within it is to create a scrollable layout, using the ScrollView element. Even basic elements can cause issues when misused. In this excerpt from Alexander Russkov’s .NET MAUI Cookbook, you will learn to create vertical and horizontal scrollable layouts.

Creating scrollable layouts

To follow the steps described in this recipe, it’s sufficient to create a blank .NET MAUI application. The default template includes sample code in the MainPage.xaml and MainPage.xaml.cs files, but you can remove it and leave only a blank ContentPage in XAML and a constructor with the InitializeComponent method in CS.

To learn how to use scrollable layouts most efficiently and avoid issues, let’s create simple vertical and horizontal layouts:

To create a vertical scrollable layout, it’s sufficient to wrap the part you would like to scroll in the ScrollView element:

<ScrollView>
    <VerticalStackLayout>
        <Button Text="Tall Button 1"
 HeightRequest="500"/>
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        <Button Text="Tall Button 2"
 HeightRequest="500"/>
    </VerticalStackLayout>
</ScrollView>

Run the project to see the result.

To enable horizontal scrolling, set ScrollView.Orientation to Horizontal. Replace VerticalStackLayout with HorizontalStackLayout to arrange elements horizontally:

<ScrollView Orientation="Horizontal">
 <HorizontalStackLayout>
 <Button Text="Tall Button 1"
 WidthRequest="500"/>
 <Button Text="Tall Button 2"
 WidthRequest="500"/>
 </HorizontalStackLayout>
</ScrollView>

Run the project to see the result.

Similar to VerticalStackLayout and HorizontalStackLayout, the ScrollView element lets its child element occupy as much space as it requests. As such, it measures it by infinite height or width (depending on the orientation). When the desired size of a child element is greater than the space available in ScrollView, scrolling functionality is activated.

Setting ScrollView.Orientation to Horizontal or Vertical determines the direction of scrolling. You can also set Orientation to Both, to scroll in both directions.

***

There are plenty more such recipes, which you can read in .NET MAUI Cookbook.

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.NET MAUI Cookbook

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💡️ Developer Tip

Passkeys offer several benefits such as enhanced security and simplified user experience. Therefore, choosing passkeys over passwords is a wise decision to make. To learn how to integrate passkey authentication in Android applications, checkout the article here.

In case you have any tips to share with your fellow mobile developers, do reply to this mail and we’d be glad to feature you in a future edition of MobilePro.

❓ Did You Know?

Did you know that over half of the apps available on the Apple App Store have never been downloaded?

Even more striking, about 70% of downloaded apps are deleted shortly after installation.

This phenomenon highlights the critical importance of first impressions in app development. Essentially, an app has approximately three days to demonstrate its value to a user before it's potentially uninstalled.

Sourced from Hyperlinkinfosystem.

👋 And that’s a wrap. We hope you enjoyed this edition of MobilePro. If you have any suggestions and feedback, or would just like to say hi to us, please write to us. Just respond to this email!

Cheers,

Runcil Rebello,

Editor-in-Chief, MobilePro