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Preparing for Googlebook: Implementing Android Cross-Device App Streaming [App Teardown]

Cross-Device Services app-teardown
この記事のポイント
  • Preparations and expected features for the “Googlebook” Android app streaming service have been implemented in the “Cross-device services” app, which manages shared settings, features, and services between Android and Chromebook devices.
  • An analysis of the Android “Cross-device services” app v1.0.1219.947788260 reveals the addition of resource code related to the Android app streaming service “CastMirroringAppStreamingService.”
  • Resource code regarding the “shift + space” keyboard shortcut for switching input languages on Android devices connected to a “Googlebook” has also been identified.

On Tuesday, May 12, 2026, Google officially announced the “Googlebook,” a new laptop brand designed for its next-generation intelligent system, “Gemini Intelligence.”

The “Googlebook” is scheduled for release in the fall of 2026 or later.

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One of the features of the “Googlebook” is an Android app streaming service that allows users to operate Android device apps directly on the screen. Our original “App Analysis” content has revealed that preparations and expected features for this service have been implemented in the “Cross-device services” app, which manages shared settings, features, and services between Android and Chromebook devices.

「アプリ解析」

当サイトの「アプリ解析」カテゴリで公開している記事では、最新 Android アプリを逆コンパイルして独自に解析し、今後実装される可能性のある新機能や変更点などをお届けします。正式リリース前の新機能や変更となるため開発段階の未確定な情報も含まれますが、Android アプリの今後のアップデート動向をいち早くキャッチできる、ほかにはない当サイトオリジナルコンテンツです。

当サイトオリジナルの「アプリ解析」コンテンツを見逃さないよう、ぜひ Google の「優先ソース」に当サイト「Jetstream 」を登録してください。

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An analysis of the application files from the “Cross-device services” app v1.0.1219.947788260 update, released on Tuesday, July 21, 2026, confirmed that resource code related to the “CastMirroringAppStreamingService” has been added. This is likely a feature designed to support the Android app streaming service implemented on the “Googlebook.”

<service
    android:name="com.google.ambient.streaming.appstreaming.core.api.CastMirroringAppStreamingService"
    android:exported="true">
    <intent-filter>
        <action android:name="com.google.ambient.streaming.action.BIND_CAST_MIRRORING"/>
    </intent-filter>
</service>

Additionally, resource code regarding the “shift + space” keyboard shortcut for switching the input language of an Android device connected to a “Googlebook” has also been identified.

<string name="prompt_switch_languages">Press shift + space to switch your phone s Gboard language</string>

“Cross-device services” App Link

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