作者 / Dave Burke, VP of Engineering
Today, we bring you 
the first beta version of Android 14. This version is still built around the core themes of privacy, security, performance, developer productivity, and user customization , while continuing to improve the experience on large-screen devices such as tablets and foldable devices. We've been steadily refining the features and stability of Android 14, and now it's time to open up the experience to developers and early adopters.
Every year brings improvements and new features to Android, and the feedback you submit in the Android Beta Program is critical along the way. We have provided more information about this beta version on the Android 14 developer website, including how to use Pixel devices to get the beta version and release schedule. I am very much looking forward to hearing your thoughts. Here we thank you in advance. It is your continuous support that makes Android a platform for everyone!
Participate in beta testing
https://www.google.com/android/beta
Android 14 developer site
https://developer.android.google.cn/about/versions/14
Get the Google Pixel system image
https://developer.android.google.cn/about/versions/14/download
release schedule
https://developer.android.google.cn/about/versions/14/overview#timeline
submit feedback
https://developer.android.google.cn/about/versions/14/feedback
Cross-device and multi-size screen support
Android 14 continues to build on previous releases with good support for tablets and foldable devices. We have also been creating a wealth of tools and resources for you, such as design references and development guides, to help you polish your application experience.
Design Reference: Extending User Experience Through Large-Screen Devices
https://developer.android.google.cn/large-screens/gallery
Development Guide: Getting Started with Large Screens
https://developer.android.google.cn/guide/topics/large-screens/get-started-with-large-screens
Smarter system interface
In the Android operating system, functions are implemented by two independent but equally important packages: a framework that provides services, and a system interface that allows users to use these services. Each version of Android will bring new improvements to the system interface, here are some changes you may notice in Beta 1.
new back arrow
When using gesture navigation to interact with your app, the back arrow is now more prominent, making the back gesture easier to understand and more useful. The back arrow also automatically adapts to the user's wallpaper or device theme.
More powerful system Sharesheet
In Android 14, apps can now add custom actions to the system Sharesheet they call. You can use ChooserAction.Builder to create a custom ChooserAction, and after creating an Intent with Intent.createChooser, give your own list of ChooserActions as its Intent.EXTRA_CHOOSER_CUSTOM_ACTIONS.
ChooserAction.Builder
https://developer.android.google.cn/reference/android/service/chooser/ChooserAction#Builder
ChooserAction
https://developer.android.google.cn/reference/android/service/chooser/ChooserAction
Intent.createChooser
https://developer.android.google.cn/reference/android/content/Intent#createChooser(android.content.Intent,%20java.lang.CharSequence)
Intent.EXTRA_CHOOSER_CUSTOM_ACTIONS
https://developer.android.google.cn/reference/android/content/Intent#EXTRA_CHOOSER_CUSTOM_ACTIONS
Additionally, the system now uses more app signals to determine the ranking of directly shared targets. You can provide a signal to report the shortcut's purpose and the corresponding function binding by calling pushDynamicShortcut.
Provide direct share goals
https://developer.android.google.cn/training/sharing/receive#providing-direct-share-targets
pushDynamicShortcut
https://developer.android.google.cn/reference/androidx/core/content/pm/ShortcutManagerCompat#pushDynamicShortcut%28android.content.Context,androidx.core.content.pm.ShortcutInfoCompat%29
function binding
https://developer.android.google.cn/reference/kotlin/androidx/core/content/pm/ShortcutInfoCompat.Builder#addCapabilityBinding%28java.lang.String,java.lang.String,java.util.List%3Cjava.lang.String%3E%29
More graphics features
You can use the new graphics features in Android 14 to make your app stand out.
Path (Path) can be queried and interpolated
Android's powerful and flexible Path API is used to create and render vector graphics. Starting with Android 14, you can query a path to know what's in it. The updated API can also interpolate between paths with exact matching structures for deformation effects. We also provide backward compatibility through the AndroidX development library, which can support up to API 21. Please visit the official documentation to learn more:
https://developer.android.google.cn/about/versions/14/features#paths
Path
https://developer.android.google.cn/reference/android/graphics/Path
Graphic Path Version 1.0
https://developer.android.google.cn/jetpack/androidx/releases/graphics#graphics-path-1.0.0-alpha01
Customization
Per app language preference
Android 14 enhances the language preference settings of each application, allowing dynamic customization of the language list displayed in the language list of each application on the Android settings page, and also allowing IME to obtain the interface language of the current application. Starting with Android Studio Giraffe Canary 7 and AGP 8.1.0-alpha07, the configuration work for an app to support per-app language preferences can be done automatically. The Android Gradle plugin generates a LocaleConfig file based on your project resources and adds a reference to it in the generated manifest file, so you don't have to manually create or update this file when your app's supported languages change. For details, please refer to "Automatically support the language preference setting of each application". Welcome to submit test feedback.
Per app language preference
https://developer.android.google.cn/guide/topics/resources/app-languages
setOverrideLocaleConfighttps://developer.android.google.cn/reference/android/app/LocaleManager#setOverrideLocaleConfig%28android.app.LocaleConfig%29
LocaleConfig
https://developer.android.google.cn/reference/android/app/LocaleConfig
Automatic support for each application language preference
https://developer.android.google.cn/studio/preview/features#automatic-per-app-languages
submit feedback
https://developer.android.google.cn/studio/report-bugs
privacy
Visible only to accessibility services that support users with disabilities
Android 14 introduces the accessibilityDataSensitive attribute, which allows apps to make a given view visible only to accessibility services that declare support for users with disabilities. Claims that these apps support users with disabilities are verified by Play Protect, so users can download them from the Google Play Store with confidence. TalkBack and other services that claim to help users with disabilities are not affected by this attribute.
Applications may consider using accessibilityDataSensitive to:
Protect user data (such as personal data or clear text passwords)
Prevents critical actions from being inadvertently performed (such as transferring money or checking out in a shopping app)
app compatibility
If you haven't tested your app's compatibility on Android 14, now is the time to start! As Android 14 enters the beta version, we have opened up early experience users and developers to experience it. In the coming weeks, you'll see more users experiment with your app on Android 14 and report issues they find.
For compatibility testing, install your production app on a device or emulator running Android 14 Beta and test all of your app's flows. Use the Behavioral Change Checklist to prioritize testing. Please release an update to your app as soon as you resolve any issues you find.
Behavior changes (for all apps)
https://developer.android.google.cn/about/versions/14/behavior-changes-all
Now you can also start preparing to upgrade your app's target platform to Android 14, just use the app compatibility switch in the developer options to test.
△ Application compatibility switch in developer options
Experience Android 14 Now
Whether you want to experience the features of Android 14, test apps or submit feedback, you can start with this beta version. If you want to test how your app behaves on tablets and foldables, the easiest way to do this is to use the tablet or foldable configuration of the Android emulator in the latest preview of the Android Studio SDK Manager. With the release of the Beta version, you can directly use supported Pixel devices to participate in the test, and get this and future Android 14 Beta versions (including feature updates) through OTA. If you don't have a Pixel device, you can test in Android Studio using the Android emulator with a 64-bit system image installed.
Feedback and Demand
https://developer.android.google.cn/about/versions/14/feedback
Install the SDK
https://developer.android.google.cn/about/versions/14/setup-sdk#install-sdk
Participate in beta testing
https://www.google.com/android/beta
For the best Android 14 development experience, we recommend using the latest preview version of Android Studio Giraffe or later.
Android Studio Giraffe
https://developer.android.google.cn/studio/preview
After setting up the SDK, you can:
Experiment with new features and APIs - Your feedback is critical as we polish and finalize the API. You can report issues on our tracking page.
Test your app for compatibility - Test whether your app is affected by Android 14 default behavior changes. Please install the app on a device or emulator running Android 14 to test it thoroughly.
Test your app with optional changes - Android 14 provides optional behavior changes that only affect if your app targets the new platform. It is important to understand and evaluate these changes early on. For testing purposes, you can enable or disable these changes individually.
Set up the Android 14 SDK
https://developer.android.google.cn/about/versions/14/setup-sdk
report a problem
https://developer.android.google.cn/about/versions/14/feedback
Compatibility Framework Changes (Android 14)
https://developer.android.google.cn/about/versions/14/reference/compat-framework-changes
We will regularly update preview and beta system images and SDKs throughout the Android 14 release cycle.
If you have already participated in the Android 13 QPR Beta test and your device supports it, you can directly use this Beta version without additional operations.
Android 13 QPR Beta 版
https://developer.android.google.cn/about/versions/13/get-qpr
Please visit the Android 14 developer site for details on how to get the beta:
https://developer.android.google.cn/about/versions/14
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