flutter/examples/shell/sensor.sky

<script>
import '/sky/framework/shell.dart' as shell;
import 'dart:sky';
import 'package:sky/services/sensors/sensors.mojom.dart';

class MyListener extends SensorListener {
  int count = 0;

  void onAccuracyChanged(int accuracy) {
    print("onAccuracyChanged $accuracy");
  }

  void onSensorChanged(SensorData data) {
    double value = data.values[0] + data.values[1] + data.values[2];
    if (value > 40.0) {
      document.querySelector('div').textContent =
          "Shake count " + (count++).toString();
    }
  }

  MyListener.unbound() {
    stub = new SensorListenerStub.unbound()
            ..delegate = this;
  }

  SensorListenerStub stub;
}

void main() {
  var sensorService = new SensorServiceProxy.unbound();
  shell.requestService(sensorService);

  var listener = new MyListener.unbound();
  sensorService.ptr.addListener(SensorType_ACCELEROMETER, listener.stub);
  listener.stub.listen();
}
</script>
<div>Shake me.</div>