CARP Mobile Sensing

import 'package:carp_core/carp_core.dart' hide Smartphone;
import 'package:carp_mobile_sensing/carp_mobile_sensing.dart';

// Create a protocol collecting steps, light, and screen and battery events
// from the phone and store collected measurements in a local SQLite database
final phone = Smartphone();
final protocol =
    SmartphoneStudyProtocol(
        ownerId: 'AB',
        name: 'Tracking steps, light, screen, and battery',
        dataEndPoint: SQLiteDataEndPoint(),
      )
      ..addPrimaryDevice(phone)
      ..addTaskControl(
        DelayedTrigger(delay: const Duration(seconds: 10)),
        BackgroundTask(
          measures: [
            Measure(type: SensorSamplingPackage.STEP_EVENT),
            Measure(type: SensorSamplingPackage.AMBIENT_LIGHT),
            Measure(type: DeviceSamplingPackage.SCREEN_EVENT),
            Measure(type: DeviceSamplingPackage.BATTERY_STATE),
          ],
        ),
        phone,
      );

// Create and configure a client manager for this phone.
await SmartPhoneClientManager().configure();

// Create a study based on the protocol.
var study = await SmartPhoneClientManager().addStudyFromProtocol(protocol);

// Deploy the study.
await SmartPhoneClientManager().tryDeployment(
  study.studyDeploymentId,
  study.deviceRoleName,
);

// Resume sampling.
SmartPhoneClientManager().resume();

// Listening on the measurements stream.
SmartPhoneClientManager().measurements.listen((measurement) {
  // Do something with the measurement, e.g. print the json.
  print(toJsonString(measurement));
});

// Pause sampling.
SmartPhoneClientManager().pause();

// Resume sampling again.
SmartPhoneClientManager().resume();

// Dispose the client. Can not be used anymore.
SmartPhoneClientManager().dispose();

SmartPhoneClientManager().configure().then(
  (_) => SmartPhoneClientManager()
      .addStudyFromProtocol(
        SmartphoneStudyProtocol.local(
          name: 'Tracking steps, light, screen, and battery',
          measures: [
            Measure(type: SensorSamplingPackage.STEP_EVENT),
            Measure(type: SensorSamplingPackage.AMBIENT_LIGHT),
            Measure(type: DeviceSamplingPackage.SCREEN_EVENT),
            Measure(type: DeviceSamplingPackage.BATTERY_STATE),
          ],
        ),
      )
      .then(
        (study) => SmartPhoneClientManager()
            .tryDeployment(study.studyDeploymentId, study.deviceRoleName)
            .then((_) => SmartPhoneClientManager().resume()),
      ),
);