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Device Manager Mobile

This project contains the mobile app, written in Flutter, for the Smart Home Device Manager sample. This app alows users to register a new device, view their existing devices, and send control commands.

Quickstart

  1. Follow these instructions to add an Android app to your Firebase project. Copy the google-services.json file into the android/app directory of the this project.
  2. Follow these instructions to add an iOS app to your Firebase project. Copy the GoogleService-Info.plist file into the ios/Runner directory of this project.
  3. Deploy the app to your Android or iOS device.

NOTE: This app uses the camera to scan QR codes. For best results, test on a physical device and not on a simulator/emulator.

Using the app

Generate a device QR code

Generate a TEXT QR code containing the following JSON to represent the IoT device:

{
    "serial_number":"<Unique device id>",
    "type":"light",
    "public_key":"<ES256 Public Key>"
}

NOTE: This example uses the ES256 key because it is more concise than RS256, allowing the key data to fit onto a QR code that is still easy to scan.

The public_key field should include just the Base64 encoded bytes of the key without any additional PEM formatting. For example, if the following PEM file is uploaded to Cloud IoT Core:

-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE4InTLsvDq9KmIW7zbL5cVOnpdHtr
XR8+vMqKIgpS82Ts1f+NdRVEFCMkO0xl/sMKrJutb2szryHWyt7th92CQw==
-----END PUBLIC KEY-----

Then the public_key JSON field should be:

MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE4InTLsvDq9KmIW7zbL5cVOnpdHtrXR8+vMqKIgpS82Ts1f+NdRVEFCMkO0xl/sMKrJutb2szryHWyt7th92CQw==

Register a new device

  1. Sign in with your Google account
  2. Click the Add button to register a new device
  3. Scan the device QR code

After the device has been successfully verified with Cloud IoT Core and written to Firestore, it will appear in the device list.

Send commands

  1. Sign in with your Google account
  2. Tap one of the devices in the list
  3. Select a new state level for that device, and tap Send Command

If the device is online, the state will update immediately. If the device is offline, the state is persisted and will be delivered to the device as soon as it reconnects to Cloud IoT Core.