Starting with Android 15, apps targeting SDK 35 or higher will have edge-to-edge drawing enforced by default. This new requirement makes it essential for developers to handle insets properly to ensure that critical UI elements remain accessible and user experience unhindered. Here are some tips and strategies for handling insets and testing your app’s edge-to-edge UI.
<h3>Handling Insets in Android 15</h3>
To manage insets effectively, it’s important to understand how to work with both the View system and Compose. Here are some key points:
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Material Components: Implement Material components as they are designed to handle insets correctly out of the box.
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Background Drawing: Ensure that backgrounds extend into the insets where necessary, allowing for a seamless, edge-to-edge appearance.
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Display Cutouts: Handle display cutouts by querying display metrics and adjusting your layouts accordingly to avoid essential UI elements being hidden by notches or camera cutouts.
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Backward Compatibility: Use backward-compatible solutions such as <code>WindowInsetsCompat</code> from the Jetpack library to ensure older versions of your app also handle insets properly.
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<h3>Testing and Previewing Edge-to-Edge Layouts</h3>
With Android 15, you can use new tools in Android Studio Ladybug to test and preview your application’s edge-to-edge UI:
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Compose Preview: Leverage the Compose Preview feature to quickly see how your UI will look with edge-to-edge enabled.
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DeviceConfigurationOverride: Use <code>DeviceConfigurationOverride</code> to simulate various device conditions, such as different screen sizes and cutouts, ensuring your app adapts well to all scenarios.
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Automated Testing: Automate your UI tests to cover edge-to-edge layout conditions, ensuring that any issues are caught early in the development cycle.
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Manual Testing: Always complement automated testing with manual checks on actual devices to get a true sense of how your app works in real-world conditions.
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By following these guidelines, you can ensure that your app not only complies with Android 15’s new edge-to-edge requirements but also provides a seamless, enjoyable experience for your users.

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Android 15 mandates edge-to-edge drawing for apps targeting SDK 35 or higher, making it crucial for developers to handle UI insets effectively. Key considerations include using Material components, extending backgrounds, handling display cutouts, and ensuring backward compatibility with tools like `WindowInsetsCompat`. New Android Studio Ladybug tools such as Compose Preview and `DeviceConfigurationOverride` facilitate testing and previewing edge-to-edge layouts. Both automated and manual testing methods are recommended to ensure a seamless user experience.

Handling Insets and Testing Edge-to-Edge UI in Android 15