WIP

app/src/main/AndroidManifest.xml

@@ -16,6 +16,17 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+
+        <service android:name="com.example.sensorz.SensorService"
+            android:enabled="true"></service>
+
+        <receiver android:name="MyBroadcastReceiver"
+            android:enabled="true"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="com.example.sensorz.intent.REBOOT" />
+            </intent-filter>
+        </receiver>
     </application>
 
 </manifest>

app/src/main/java/com/example/sensorz/MainActivity.kt

@@ -1,39 +1,70 @@
 package com.example.sensorz
 
+import android.app.ActivityManager
 import android.content.Context
+import android.content.Intent
+import android.content.IntentFilter
 import android.hardware.Sensor
 import android.hardware.SensorEvent
 import android.hardware.SensorEventListener
 import android.hardware.SensorManager
-import androidx.appcompat.app.AppCompatActivity
+import android.net.ConnectivityManager
 import android.os.Bundle
 import android.util.Log
-import android.view.SurfaceHolder
-import android.view.SurfaceView
 import android.widget.TextView
-import java.lang.NumberFormatException
+import androidx.appcompat.app.AppCompatActivity
-import java.lang.StringBuilder
 
 class MainActivity : AppCompatActivity(), SensorEventListener {
 
     lateinit var mSensorManager: SensorManager
     lateinit var mAccelerometer: Sensor
     lateinit var mGyrometer: Sensor
-//    private var mSensorManager : SensorManager ?= null
+    lateinit var mIntentService: Intent
-//    private var mAccelerometer : Sensor ?= null
+    lateinit var mSensorService: SensorService
+    lateinit var mBcReceiver : MyBroadcastReceiver
+
+    private fun isMyServiceRunning(serviceClass: Class<*>): Boolean {
+        val manager = getSystemService(Context.ACTIVITY_SERVICE) as ActivityManager
+        for (service in manager.getRunningServices(Integer.MAX_VALUE)) {
+            if (serviceClass.name == service.service.className) {
+                Log.i("isMyServiceRunning?", true.toString() + "")
+                return true
+            }
+        }
+        Log.i("isMyServiceRunning?", false.toString() + "")
+        return false
+    }
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
+
+        mBcReceiver = MyBroadcastReceiver()
+        val filter = IntentFilter().apply {
+            addAction("com.example.sensorz.intent.REBOOT")
+        }
+//        val filter = IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION).apply {
+////            addAction(Intent.ACTION_AIRPLANE_MODE_CHANGED)
+//        }
+        registerReceiver(mBcReceiver, filter)
+
+
         val tv: TextView = findViewById(R.id.sensor_list)
 
+        mSensorService = SensorService(applicationContext)
+        mIntentService = Intent(applicationContext, mSensorService::class.java)
+
+        if (!isMyServiceRunning(mSensorService.javaClass)) {
+            startService(mIntentService)
+        }
+
         mSensorManager = getSystemService(Context.SENSOR_SERVICE) as SensorManager
         val sensorList: List<Sensor> = mSensorManager.getSensorList(Sensor.TYPE_ALL) as List<Sensor>
 
         val text = StringBuilder()
         for (x in sensorList)
             text.append(x.name).append("\n")
-        tv.setText(text)
+        tv.text = text
 
 
         mAccelerometer = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER)
@@ -41,6 +72,7 @@ class MainActivity : AppCompatActivity(), SensorEventListener {
 
 
     }
+
     override fun onAccuracyChanged(sensor: Sensor?, accuracy: Int) {
         val txt = sensor.toString() + " | " + accuracy.toString()
         Log.i("SENSOR", txt)
@@ -51,25 +83,49 @@ class MainActivity : AppCompatActivity(), SensorEventListener {
         // with t, the low-pass filter's time-constant
         // and dT, the event delivery rate
 
+        fun Double.format(digits: Int) = java.lang.String.format("%.${digits}f", this)
+        val accelGravity = arrayListOf<Double>(0.toDouble(), 0.toDouble(), 0.toDouble())
+        when (event.sensor?.type) {
+            Sensor.TYPE_ACCELEROMETER -> {
+                val accelLin = arrayOf(0.toDouble(), 0.toDouble(), 0.toDouble())
+                val alpha = 0.8f
+                accelGravity[0] = alpha * accelGravity[0] + (1 - alpha) * event.values[0]
+                accelGravity[1] = alpha * accelGravity[1] + (1 - alpha) * event.values[1]
+                accelGravity[2] = alpha * accelGravity[2] + (1 - alpha) * event.values[2]
+                accelLin[0] = event.values[0] - accelGravity[0]
+                accelLin[1] = event.values[1] - accelGravity[1]
+                accelLin[2] = event.values[2] - accelGravity[2]
+                findViewById<TextView>(R.id.accel_x).text = accelLin[0].format(3)
+                findViewById<TextView>(R.id.accel_y).text = accelLin[1].format(3)
+                findViewById<TextView>(R.id.accel_z).text = accelLin[2].format(3)
+            }
 
-        val alpha = 0.8.toFloat()
-        val gravity = arrayOf(0.toFloat(), 0.toFloat(), 0.toFloat())
-        val linear_acceleration = arrayOfNulls<Float>(3)
 
-        gravity[0] = alpha * gravity[0] + (1 - alpha) * event!!.values[0]
+            Sensor.TYPE_GYROSCOPE -> {
-        gravity[1] = alpha * gravity[1] + (1 - alpha) * event!!.values[1]
+                findViewById<TextView>(R.id.gyro_x).text = event.values[0].toDouble().format(3)
-        gravity[2] = alpha * gravity[2] + (1 - alpha) * event!!.values[2]
+                findViewById<TextView>(R.id.gyro_y).text = event.values[1].toDouble().format(3)
+                findViewById<TextView>(R.id.gyro_z).text = event.values[2].toDouble().format(3)
+            }
+        }
 
-        linear_acceleration[0] = event.values[0] - gravity[0]
-        linear_acceleration[1] = event.values[1] - gravity[1]
-        linear_acceleration[2] = event.values[2] - gravity[2]
 
-        val txt = "CHANGE: " + event.sensor.name + linear_acceleration[0] + ", " + linear_acceleration[1] + ", " + linear_acceleration[2]
+//        val alpha = 0.8.toFloat()
-        Log.i("SENSOR", txt)
+//        val gravity = arrayOf(0.toFloat(), 0.toFloat(), 0.toFloat())
+//        val linear_acceleration = arrayOfNulls<Float>(3)
+//
+//        gravity[0] = alpha * gravity[0] + (1 - alpha) * event!!.values[0]
+//        gravity[1] = alpha * gravity[1] + (1 - alpha) * event!!.values[1]
+//        gravity[2] = alpha * gravity[2] + (1 - alpha) * event!!.values[2]
+//
+//        linear_acceleration[0] = event.values[0] - gravity[0]
+//        linear_acceleration[1] = event.values[1] - gravity[1]
+//        linear_acceleration[2] = event.values[2] - gravity[2]
+//
+//        val txt = "CHANGE: " + event.sensor.name + linear_acceleration[0] + ", " + linear_acceleration[1] + ", " + linear_acceleration[2]
+//        Log.i("SENSOR", txt)
     }
 
 
-
     override fun onResume() {
         super.onResume()
         mSensorManager.registerListener(this, mAccelerometer, SensorManager.SENSOR_DELAY_NORMAL)
@@ -80,5 +136,11 @@ class MainActivity : AppCompatActivity(), SensorEventListener {
         super.onPause()
         mSensorManager.unregisterListener(this)
     }
+
+    override fun onDestroy() {
+        stopService(mIntentService)
+        unregisterReceiver(mBcReceiver)
+        super.onDestroy()
+    }
 }
 

app/src/main/java/com/example/sensorz/MyBroadcastReceiver.kt

@@ -0,0 +1,27 @@
+package com.example.sensorz
+
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.util.Log
+import android.widget.Toast
+
+
+private const val TAG = "MyBroadcastReceiver"
+
+class MyBroadcastReceiver : BroadcastReceiver() {
+    override fun onReceive(context: Context, intent: Intent) {
+
+        StringBuilder().apply {
+            append("Action: ${intent.action}\n")
+            append("URI: ${intent.toUri(Intent.URI_INTENT_SCHEME)}\n")
+            toString().also { log ->
+                Log.d(TAG, log)
+                Toast.makeText(context, log, Toast.LENGTH_LONG).show()
+            }
+        }
+
+        val intent = Intent(context, SensorService::class.java)
+        context.startService(intent)
+    }
+}

app/src/main/java/com/example/sensorz/SensorService.java

@@ -0,0 +1,92 @@
+package com.example.sensorz;
+
+import android.app.Service;
+import android.content.Context;
+import android.content.Intent;
+import android.os.IBinder;
+import android.util.Log;
+
+import androidx.annotation.Nullable;
+
+import java.util.Timer;
+import java.util.TimerTask;
+
+
+public class SensorService extends Service {
+
+    public int counter = 0;
+
+    public SensorService(Context applicationContext) {
+        super();
+        Log.i("HERE", "here I am!");
+    }
+
+    public SensorService() {
+    }
+
+    @Override
+    public int onStartCommand(Intent intent, int flags, int startId) {
+        super.onStartCommand(intent, flags, startId);
+        startTimer();
+        return START_STICKY;
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        Log.i("EXIT", "ondestroy!");
+        Intent bIntent = new Intent(this, MyBroadcastReceiver.class);
+        bIntent.setAction("com.example.sensorz.intent.REBOOT");
+        sendBroadcast(bIntent);
+//        Intent bIntent = new Intent(this, Rebot)
+//        Intent broadcastIntent = new Intent(this, Senso.class);
+//        sendBroadcast(broadcastIntent);
+//        Intent bIntent = new Intent("this.is.godsent");
+//        sendBroadcast(bIntent);
+        stoptimertask();
+    }
+
+    private Timer timer;
+    private TimerTask timerTask;
+    long oldTime = 0;
+
+    public void startTimer() {
+        //set a new Timer
+        timer = new Timer();
+
+        //initialize the TimerTask's job
+        initializeTimerTask();
+
+        //schedule the timer, to wake up every 1 second
+        timer.schedule(timerTask, 1000, 1000); //
+    }
+
+    /**
+     * it sets the timer to print the counter every x seconds
+     */
+    public void initializeTimerTask() {
+        timerTask = new TimerTask() {
+            public void run() {
+                Log.i("in timer", "in timer ++++  " + (counter++));
+            }
+        };
+    }
+
+    /**
+     * not needed
+     */
+    public void stoptimertask() {
+        Log.i("EXIT", "stop Timeer Task!");
+        //stop the timer, if it's not already null
+        if (timer != null) {
+            timer.cancel();
+            timer = null;
+        }
+    }
+
+    @Nullable
+    @Override
+    public IBinder onBind(Intent intent) {
+        return null;
+    }
+}

app/src/main/res/layout/activity_main.xml

@@ -11,16 +11,152 @@
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintTop_toTopOf="parent"
         app:layout_constraintLeft_toLeftOf="parent"
         app:layout_constraintRight_toRightOf="parent"
-        >
+        app:layout_constraintTop_toTopOf="parent">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical">
+
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:text="Accelerometer (m/s2)" />
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:orientation="horizontal">
+
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:background="#75A7A7A7"
+                    android:paddingStart="2dp"
+                    android:paddingEnd="2dp"
+                    android:layout_weight="1"
+                    android:text="X:" />
+
+                <TextView
+                    android:id="@+id/accel_x"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="4"
+                    android:text=""
+                    android:textAlignment="textEnd" />
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:background="#75A7A7A7"
+                    android:paddingStart="2dp"
+                    android:paddingEnd="2dp"
+                    android:layout_weight="1"
+                    android:text="Y:" />
+
+                <TextView
+                    android:id="@+id/accel_y"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="4"
+                    android:text=""
+                    android:textAlignment="textEnd" />
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:background="#75A7A7A7"
+                    android:paddingStart="2dp"
+                    android:paddingEnd="2dp"
+                    android:layout_weight="1"
+                    android:text="Z:" />
+
+                <TextView
+                    android:id="@+id/accel_z"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="4"
+                    android:text=""
+                    android:textAlignment="textEnd" />
+            </LinearLayout>
 
             <TextView
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
+                android:layout_weight="4"
+                android:text="Gyro (rad/s)" />
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:orientation="horizontal">
+
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:background="#75A7A7A7"
+                    android:paddingStart="2dp"
+                    android:paddingEnd="2dp"
+                    android:layout_weight="1"
+                    android:text="X:" />
+
+                <TextView
+                    android:id="@+id/gyro_x"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="4"
+                    android:text=""
+                    android:textAlignment="textEnd" />
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:background="#75A7A7A7"
+                    android:paddingStart="2dp"
+                    android:paddingEnd="2dp"
+                    android:layout_weight="1"
+                    android:text="Y:" />
+
+                <TextView
+                    android:id="@+id/gyro_y"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="4"
+                    android:text=""
+                    android:textAlignment="textEnd" />
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:background="#75A7A7A7"
+                    android:paddingStart="2dp"
+                    android:paddingEnd="2dp"
+                    android:layout_weight="1"
+                    android:text="Z:" />
+
+                <TextView
+                    android:id="@+id/gyro_z"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="4"
+                    android:text=""
+                    android:textAlignment="textEnd" />
+            </LinearLayout>
+
+            <TextView
                 android:id="@+id/sensor_list"
-            android:text="(placeholder)">main</TextView>
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="(placeholder)">main
+            </TextView>
+
+        </LinearLayout>
+
 
     </ScrollView>