Add sensor data measurement and show it on screen

.gradle/buildOutputCleanup/cache.properties

+#Thu Mar 04 15:27:51 CET 2021
+gradle.version=6.1.1

.vscode/launch.json

+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "stress_detection",
+            "request": "launch",
+            "type": "dart"
+        }
+    ]
+}
\ No newline at end of file

android/gradle.properties

-org.gradle.jvmargs=-Xmx1536M
+org.gradle.jvmargs=-Xmx512M
 android.useAndroidX=true
 android.enableJetifier=true
 android.enableR8=true

lib/main.dart

+import 'dart:async';
+
 import 'package:flutter/material.dart';
+import 'package:flutter_sensors/flutter_sensors.dart';
+
+void main() => runApp(MyApp());
+
+class MyApp extends StatefulWidget {
+  @override
+  _MyAppState createState() => _MyAppState();
+}
+
+class _MyAppState extends State<MyApp> {
+  bool _accelAvailable = false;
+  bool _gyroAvailable = false;
+  List<double> _accelData = List.filled(3, 0.0);
+  List<double> _gyroData = List.filled(3, 0.0);
+  StreamSubscription _accelSubscription;
+  StreamSubscription _gyroSubscription;
+
+  @override
+  void initState() {
+    _checkAccelerometerStatus();
+    _checkGyroscopeStatus();
+    super.initState();
+  }
+
+  @override
+  void dispose() {
+    _stopAccelerometer();
+    _stopGyroscope();
+    super.dispose();
+  }
+
+  void _checkAccelerometerStatus() async {
+    await SensorManager()
+        .isSensorAvailable(Sensors.ACCELEROMETER)
+        .then((result) {
+      setState(() {
+        _accelAvailable = result;
+      });
+    });
+  }
+
+  Future<void> _startAccelerometer() async {
+    if (_accelSubscription != null) return;
+    if (_accelAvailable) {
+      final stream = await SensorManager().sensorUpdates(
+        sensorId: Sensors.ACCELEROMETER,
+        interval: Sensors.SENSOR_DELAY_FASTEST,
+      );
+      _accelSubscription = stream.listen((sensorEvent) {
+        setState(() {
+          _accelData = sensorEvent.data;
+        });
+      });
+    }
+  }
 
-void main() => runApp(MaterialApp(
+  void _stopAccelerometer() {
+    if (_accelSubscription == null) return;
+    _accelSubscription.cancel();
+    _accelSubscription = null;
+  }
+
+  void _checkGyroscopeStatus() async {
+    await SensorManager().isSensorAvailable(Sensors.GYROSCOPE).then((result) {
+      setState(() {
+        _gyroAvailable = result;
+      });
+    });
+  }
+
+  Future<void> _startGyroscope() async {
+    if (_gyroSubscription != null) return;
+    if (_gyroAvailable) {
+      final stream =
+          await SensorManager().sensorUpdates(sensorId: Sensors.GYROSCOPE);
+      _gyroSubscription = stream.listen((sensorEvent) {
+        setState(() {
+          _gyroData = sensorEvent.data;
+        });
+      });
+    }
+  }
+
+  void _stopGyroscope() {
+    if (_gyroSubscription == null) return;
+    _gyroSubscription.cancel();
+    _gyroSubscription = null;
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
       home: Scaffold(
         appBar: AppBar(
-      title: Text('Diary Entry - Homepage'),
-      centerTitle: true ,
+          title: const Text('Sensor Data'),
         ),
-    body: Center(
-      child: Text(
-          'Welcome to your diary',
-        style: TextStyle(
-          fontSize: 20.0,
-          color: Colors.grey[600],
-          letterSpacing: 2.0,
-          fontWeight: FontWeight.bold,
+        body: Container(
+          padding: EdgeInsets.all(16.0),
+          alignment: AlignmentDirectional.topCenter,
+          child: Column(
+            children: <Widget>[
+              Text(
+                "Accelerometer Test",
+                textAlign: TextAlign.center,
               ),
+              Text(
+                "Accelerometer Enabled: $_accelAvailable",
+                textAlign: TextAlign.center,
               ),
+              Padding(padding: EdgeInsets.only(top: 16.0)),
+              Text(
+                "[0](X) = ${_accelData[0]}",
+                textAlign: TextAlign.center,
               ),
-    floatingActionButton: FloatingActionButton(
-      child: Text('+'),
+              Padding(padding: EdgeInsets.only(top: 16.0)),
+              Text(
+                "[1](Y) = ${_accelData[1]}",
+                textAlign: TextAlign.center,
               ),
+              Padding(padding: EdgeInsets.only(top: 16.0)),
+              Text(
+                "[2](Z) = ${_accelData[2]}",
+                textAlign: TextAlign.center,
               ),
-
-));
-
-
+              Padding(padding: EdgeInsets.only(top: 16.0)),
+              Row(
+                mainAxisAlignment: MainAxisAlignment.center,
+                children: <Widget>[
+                  MaterialButton(
+                    child: Text("Start"),
+                    color: Colors.green,
+                    onPressed: _accelAvailable != null
+                        ? () => _startAccelerometer()
+                        : null,
+                  ),
+                  Padding(
+                    padding: EdgeInsets.all(8.0),
+                  ),
+                  MaterialButton(
+                    child: Text("Stop"),
+                    color: Colors.red,
+                    onPressed: _accelAvailable != null
+                        ? () => _stopAccelerometer()
+                        : null,
+                  ),
+                ],
+              ),
+              Padding(padding: EdgeInsets.only(top: 16.0)),
+              Text(
+                "Gyroscope Test",
+                textAlign: TextAlign.center,
+              ),
+              Text(
+                "Gyroscope Enabled: $_gyroAvailable",
+                textAlign: TextAlign.center,
+              ),
+              Padding(padding: EdgeInsets.only(top: 16.0)),
+              Text(
+                "[0](X) = ${_gyroData[0]}",
+                textAlign: TextAlign.center,
+              ),
+              Padding(padding: EdgeInsets.only(top: 16.0)),
+              Text(
+                "[1](Y) = ${_gyroData[1]}",
+                textAlign: TextAlign.center,
+              ),
+              Padding(padding: EdgeInsets.only(top: 16.0)),
+              Text(
+                "[2](Z) = ${_gyroData[2]}",
+                textAlign: TextAlign.center,
+              ),
+              Padding(padding: EdgeInsets.only(top: 16.0)),
+              Row(
+                mainAxisAlignment: MainAxisAlignment.center,
+                children: <Widget>[
+                  MaterialButton(
+                    child: Text("Start"),
+                    color: Colors.green,
+                    onPressed:
+                        _gyroAvailable != null ? () => _startGyroscope() : null,
+                  ),
+                  Padding(
+                    padding: EdgeInsets.all(8.0),
+                  ),
+                  MaterialButton(
+                    child: Text("Stop"),
+                    color: Colors.red,
+                    onPressed:
+                        _gyroAvailable != null ? () => _stopGyroscope() : null,
+                  ),
+                ],
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}
\ No newline at end of file

pubspec.lock

@@ -62,6 +62,13 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_sensors:
+    dependency: "direct main"
+    description:
+      name: flutter_sensors
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.1.6"
   flutter_test:
     dependency: "direct dev"
     description: flutter

pubspec.yaml

@@ -25,6 +25,9 @@ dependencies:
     sdk: flutter
   
   
+  flutter_sensors: ^0.1.5
+
+
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.
   cupertino_icons: ^1.0.0