This plugin is used to recognize user activity on Android and iOS platforms. To implement this plugin, Android used ActivityRecognitionClient and iOS used CMMotionActivityManager.

• Can check or request activity recognition permission.
• Subscribe to an activity stream to detect user activity in real time.

To use this plugin, add activity_rec_flutter as a dependency in your pubspec.yaml file. For example:

dependencies:
  activity_rec_flutter: ^1.0.0

After adding the activity_rec_flutter plugin to the flutter project, we need to specify the platform-specific permissions and services to use for this plugin to work properly.

Open the AndroidManifest.xml file and add the following permissions between the <manifest> and <application> tags.

<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.ACTIVITY_RECOGNITION" />
<uses-permission android:name="com.google.android.gms.permission.ACTIVITY_RECOGNITION" />

Open the ios/Runner/Info.plist file and add the following permission inside the <dict> tag.

<key>NSMotionUsageDescription</key>
<string>Used to recognize user activity information.</string>

1. Create a FlutterActivityRecognition instance.

final activityRecognition = FlutterActivityRecognition.instance;

2. Checks whether activity recognition permission is granted.

Future<bool> isPermissionGrants() async {
  // Check if the user has granted permission. If not, request permission.
  PermissionRequestResult reqResult;
  reqResult = await activityRecognition.checkPermission();
  if (reqResult == PermissionRequestResult.PERMANENTLY_DENIED) {
    dev.log('Permission is permanently denied.');
    return false;
  } else if (reqResult == PermissionRequestResult.DENIED) {
    reqResult = await activityRecognition.requestPermission();
    if (reqResult != PermissionRequestResult.GRANTED) {
      dev.log('Permission is denied.');
      return false;
    }
  }

  return true;
} 

3. Subscribe to an activity stream to receive activity data in real time.

// Subscribe to the activity stream.
final _activityStreamSubscription = activityRecognition.activityStream
  .handleError(_handleError)
  .listen(_onActivityReceive);

4. When the widget is dispose or the plugin is finished using, cancel the subscription.

@override
void dispose() {
  activityStreamSubscription?.cancel();
  super.dispose();
}

Defines the type of permission request result.

A model representing the user's activity.

Defines the type of activity.

Defines the confidence of activity.

If you find any bugs or issues while using the plugin, please register an issues on GitHub. You can also contact us at hwj930513@naver.com.