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Android companion app

In order to receive the notifications, we have to install an Android companion app on our smartphone. Just to simplify the system, this Android app will:

Subscribe to the channel used by the Android Things app to send notifications.
Implement a service to listen to the incoming notification.
Show the notification to the user.

If you do not know how to receive notifications in Android you can visit h t t p s ://f i r e b a s e .g o o g l e .c o m /d o c s /a n d r o i d /s e t u p to know more. The source code of the Android companion app is provided with this book's source code. The app interface is very simple because we simply have to subscribe to the topic and wait for the incoming notifications.

To install the app, just open the project using Android ...

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