Write the code

app/.gitignore

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+/build

app/build.gradle.kts

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+plugins {
+    alias(libs.plugins.androidApplication)
+}
+
+android {
+    namespace = "com.astatin3.android_position_tracking"
+    compileSdk = 34
+
+    defaultConfig {
+        applicationId = "com.astatin3.android_position_tracking"
+        minSdk = 24
+        targetSdk = 34
+        versionCode = 1
+        versionName = "1.0"
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = false
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro"
+            )
+        }
+    }
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation(libs.appcompat)
+    implementation(libs.material)
+    implementation(libs.activity)
+    implementation(libs.constraintlayout)
+    testImplementation(libs.junit)
+    androidTestImplementation(libs.ext.junit)
+    androidTestImplementation(libs.espresso.core)
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/androidTest/java/com/astatin3/android_position_tracking/ExampleInstrumentedTest.java

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+package com.astatin3.android_position_tracking;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.astatin3.android_position_tracking", appContext.getPackageName());
+    }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <application
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.Androidpositiontracking"
+        tools:targetApi="31">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

app/src/main/java/com/astatin3/android_position_tracking/MainActivity.java

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+package com.astatin3.android_position_tracking;
+
+import static android.util.Half.EPSILON;
+
+import android.content.pm.ActivityInfo;
+import android.os.Bundle;
+
+import androidx.activity.EdgeToEdge;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.graphics.Insets;
+import androidx.core.view.ViewCompat;
+import androidx.core.view.WindowInsetsCompat;
+
+import android.hardware.Sensor;
+import android.hardware.SensorEvent;
+import android.hardware.SensorEventListener;
+import android.hardware.SensorManager;
+import android.os.Bundle;
+import android.content.Context;
+import android.widget.TextView;
+
+public class MainActivity extends AppCompatActivity {
+    TextView textX, textY, textZ;
+    Position o;
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        EdgeToEdge.enable(this);
+        setContentView(R.layout.activity_main);
+        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
+            Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
+            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
+            return insets;
+        });
+
+        textX = findViewById(R.id.textX);
+        textY = findViewById(R.id.textY);
+        textZ = findViewById(R.id.textZ);
+        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
+
+        o = new Position(this);
+
+//        o.startListening(ori_listener);
+    }
+
+    private Position.Listener ori_listener = new Position.Listener() {
+        @Override
+        public void onPositionChanged(float x, float y, float z) {
+            textX.setText(String.valueOf((int)(x*100)));
+            textY.setText(String.valueOf((int)(y*100)));
+            textZ.setText(String.valueOf((int)(z*100)));
+            System.out.println(x);
+        }
+    };
+
+    public void onResume() {
+        super.onResume();
+        o.startListening(ori_listener);
+//        sensorManager.registerListener(gyroListener, sensor, SensorManager.SENSOR_DELAY_NORMAL);
+    }
+    public void onStop() {
+        super.onStop();
+        o.stopListening();
+//        sensorManager.unregisterListener(gyroListener);
+    }
+}

app/src/main/java/com/astatin3/android_position_tracking/Orientation.java

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+package com.astatin3.android_position_tracking;
+
+import android.app.Activity;
+import android.hardware.Sensor;
+import android.hardware.SensorEvent;
+import android.hardware.SensorEventListener;
+import android.hardware.SensorManager;
+//import android.support.annotation.Nullable;
+import android.view.Surface;
+import android.view.WindowManager;
+
+import androidx.annotation.Nullable;
+
+// Copied from https://github.com/kplatfoot/android-rotation-sensor-sample/blob/master/app/src/main/java/com/kviation/sample/orientation/Orientation.java
+public class Orientation implements SensorEventListener {
+
+    public interface Listener {
+        void onOrientationChanged(float[] rotation);
+    }
+
+    private static final int SENSOR_DELAY_MICROS = 16 * 1000; // 16ms
+
+    private final WindowManager mWindowManager;
+
+    private final SensorManager mSensorManager;
+
+    @Nullable
+    private final Sensor mRotationSensor;
+
+    private int mLastAccuracy;
+    private Listener mListener;
+
+    public Orientation(Activity activity) {
+        mWindowManager = activity.getWindow().getWindowManager();
+        mSensorManager = (SensorManager) activity.getSystemService(Activity.SENSOR_SERVICE);
+
+        // Can be null if the sensor hardware is not available
+        mRotationSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_ROTATION_VECTOR);
+    }
+
+    public void startListening(Listener listener) {
+        if (mListener == listener) {
+            return;
+        }
+        mListener = listener;
+        if (mRotationSensor == null) {
+            System.out.println("Rotation vector sensor not available; will not provide orientation data.");
+            return;
+        }
+        mSensorManager.registerListener(this, mRotationSensor, SENSOR_DELAY_MICROS);
+    }
+
+    public void stopListening() {
+        mSensorManager.unregisterListener(this);
+        mListener = null;
+    }
+
+    @Override
+    public void onAccuracyChanged(Sensor sensor, int accuracy) {
+        if (mLastAccuracy != accuracy) {
+            mLastAccuracy = accuracy;
+        }
+    }
+
+    @Override
+    public void onSensorChanged(SensorEvent event) {
+        if (mListener == null) {
+            return;
+        }
+        if (mLastAccuracy == SensorManager.SENSOR_STATUS_UNRELIABLE) {
+            return;
+        }
+        if (event.sensor == mRotationSensor) {
+            updateOrientation(event.values);
+        }
+    }
+
+    @SuppressWarnings("SuspiciousNameCombination")
+    private void updateOrientation(float[] rotationVector) {
+        float[] rotationMatrix = new float[9];
+        SensorManager.getRotationMatrixFromVector(rotationMatrix, rotationVector);
+
+        final int worldAxisForDeviceAxisX;
+        final int worldAxisForDeviceAxisY;
+
+        // Remap the axes as if the device screen was the instrument panel,
+        // and adjust the rotation matrix for the device orientation.
+        switch (mWindowManager.getDefaultDisplay().getRotation()) {
+            case Surface.ROTATION_0:
+            default:
+                worldAxisForDeviceAxisX = SensorManager.AXIS_X;
+                worldAxisForDeviceAxisY = SensorManager.AXIS_Z;
+                break;
+            case Surface.ROTATION_90:
+                worldAxisForDeviceAxisX = SensorManager.AXIS_Z;
+                worldAxisForDeviceAxisY = SensorManager.AXIS_MINUS_X;
+                break;
+            case Surface.ROTATION_180:
+                worldAxisForDeviceAxisX = SensorManager.AXIS_MINUS_X;
+                worldAxisForDeviceAxisY = SensorManager.AXIS_MINUS_Z;
+                break;
+            case Surface.ROTATION_270:
+                worldAxisForDeviceAxisX = SensorManager.AXIS_MINUS_Z;
+                worldAxisForDeviceAxisY = SensorManager.AXIS_X;
+                break;
+        }
+
+        float[] adjustedRotationMatrix = new float[9];
+        SensorManager.remapCoordinateSystem(rotationMatrix, worldAxisForDeviceAxisX,
+                worldAxisForDeviceAxisY, adjustedRotationMatrix);
+
+        // Transform rotation matrix into azimuth/pitch/roll
+        float[] orientation = new float[3];
+        SensorManager.getOrientation(adjustedRotationMatrix, orientation);
+
+
+        mListener.onOrientationChanged(new float[]{
+                (float)Math.toDegrees(orientation[0]),
+                (float)Math.toDegrees(orientation[1]),
+                (float)Math.toDegrees(orientation[2])});
+    }
+}

app/src/main/java/com/astatin3/android_position_tracking/Position.java

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+package com.astatin3.android_position_tracking;
+
+import android.app.Activity;
+import android.hardware.Sensor;
+import android.hardware.SensorEvent;
+import android.hardware.SensorEventListener;
+import android.hardware.SensorManager;
+import android.view.WindowManager;
+
+import androidx.annotation.Nullable;
+
+public class Position implements SensorEventListener {
+    public interface Listener {
+        void onPositionChanged(float x, float y, float z);
+    }
+    private Orientation o;
+    float[] cur_rotation;
+    private final SensorManager mSensorManager;
+    private static final int SENSOR_DELAY_MICROS = 16 * 1000; // 16ms
+    @Nullable
+    private final Sensor mAccelSensor;
+
+    private int mLastAccuracy;
+    private Listener mListener;
+
+//    private float[] acceleration = new float[3]; // Accelerometer values
+//    private float[] rotation = new float[4]; // Gyroscope values
+//    private float[] globalAcceleration = new float[3]; // Global accelerometer values
+//    private float[] position = new float[3]; // Device position
+
+    public Position(Activity activity){
+//        mWindowManager = activity.getWindow().getWindowManager();
+        mSensorManager = (SensorManager) activity.getSystemService(Activity.SENSOR_SERVICE);
+
+        // Can be null if the sensor hardware is not available
+        mAccelSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_LINEAR_ACCELERATION);
+
+        o = new Orientation(activity);
+    }
+
+    @Override
+    public void onSensorChanged(SensorEvent event) {
+        if (mListener == null) {
+            return;
+        }
+        if (mLastAccuracy == SensorManager.SENSOR_STATUS_UNRELIABLE) {
+            return;
+        }
+        if (event.sensor == mAccelSensor) {
+            updateAccel(event.values);
+        }
+    }
+
+    public void stopListening() {
+        mSensorManager.unregisterListener(this);
+        mListener = null;
+        o.stopListening();
+    }
+
+    @Override
+    public void onAccuracyChanged(Sensor sensor, int accuracy) {
+        if (mLastAccuracy != accuracy) {
+            mLastAccuracy = accuracy;
+        }
+    }
+
+    public void startListening(Position.Listener listener) {
+        if (mListener == listener) {
+            return;
+        }
+        mListener = listener;
+        if (mAccelSensor == null) {
+            System.out.println("Rotation vector sensor not available; will not provide orientation data.");
+            return;
+        }
+
+        o.startListening(new Orientation.Listener() {
+            @Override
+            public void onOrientationChanged(float[] rotation) {
+                cur_rotation = rotation;
+            }
+        });
+
+        mSensorManager.registerListener(this, mAccelSensor, SENSOR_DELAY_MICROS);
+    }
+
+    private float[] position = {0, 0, 0};
+    private float[] velocity = {0, 0, 0};
+    private float lastUpdateTime = 0;
+    private float[] lastAccel = {0, 0, 0};
+    private static final float ALPHA = 0.1f; // Low-pass filter factor
+    private static final float NOISE_THRESHOLD = 0.1f; // Noise threshold
+
+    public void updateAccel(float[] accelVector) {
+        float currentTime = System.nanoTime() / 1e9f; // Convert to seconds
+        float deltaTime = currentTime - lastUpdateTime;
+
+        if (lastUpdateTime == 0) {
+            lastUpdateTime = currentTime;
+            System.arraycopy(accelVector, 0, lastAccel, 0, 3);
+            return;
+        }
+
+        // Apply low-pass filter
+        for (int i = 0; i < 3; i++) {
+            accelVector[i] = lowPassFilter(lastAccel[i], accelVector[i]);
+        }
+
+        // Apply threshold-based noise reduction
+        for (int i = 0; i < 3; i++) {
+            if (Math.abs(accelVector[i]) < NOISE_THRESHOLD) {
+                accelVector[i] = 0;
+            }
+        }
+
+        accelVector = rotatePosition(accelVector, cur_rotation);
+
+        for (int i = 0; i < 3; i++) {
+            // Update velocity: v = v0 + a * t
+            velocity[i] += accelVector[i] * deltaTime;
+
+            // Update position: x = x0 + v * t + (1/2) * a * t^2
+            position[i] += velocity[i] * deltaTime + 0.5f * accelVector[i] * deltaTime * deltaTime;
+        }
+
+        lastUpdateTime = currentTime;
+        System.arraycopy(accelVector, 0, lastAccel, 0, 3);
+
+        mListener.onPositionChanged(position[0], position[1], position[2]);
+    }
+
+    private float lowPassFilter(float lastValue, float currentValue) {
+        return ALPHA * lastValue + (1 - ALPHA) * currentValue;
+    }
+
+    public static float[] rotatePosition(float[] position, float[] rotation) {
+        if (position.length != 3 || rotation.length != 3) {
+            throw new IllegalArgumentException("Both position and rotation must have 3 components");
+        }
+
+        // Convert degrees to radians
+        float pitch = (float) Math.toRadians(rotation[0]);
+        float yaw = (float) Math.toRadians(rotation[1]);
+        float roll = (float) Math.toRadians(rotation[2]);
+
+        // Precompute trigonometric functions
+        float cp = (float) Math.cos(pitch);
+        float sp = (float) Math.sin(pitch);
+        float cy = (float) Math.cos(yaw);
+        float sy = (float) Math.sin(yaw);
+        float cr = (float) Math.cos(roll);
+        float sr = (float) Math.sin(roll);
+
+        // Create rotation matrix
+        float[][] rotMatrix = new float[3][3];
+        rotMatrix[0][0] = cy * cr + sy * sp * sr;
+        rotMatrix[0][1] = -cy * sr + sy * sp * cr;
+        rotMatrix[0][2] = sy * cp;
+        rotMatrix[1][0] = sr * cp;
+        rotMatrix[1][1] = cr * cp;
+        rotMatrix[1][2] = -sp;
+        rotMatrix[2][0] = -sy * cr + cy * sp * sr;
+        rotMatrix[2][1] = sy * sr + cy * sp * cr;
+        rotMatrix[2][2] = cy * cp;
+
+        // Apply rotation
+        float[] rotatedPosition = new float[3];
+        for (int i = 0; i < 3; i++) {
+            rotatedPosition[i] =
+                    rotMatrix[i][0] * position[0] +
+                            rotMatrix[i][1] * position[1] +
+                            rotMatrix[i][2] * position[2];
+        }
+
+        return rotatedPosition;
+    }
+    // Add a calibration method to remove initial offset
+//    public void calibrate(int numSamples) {
+//        float[] sumAccel = {0, 0, 0};
+//        for (int i = 0; i < numSamples; i++) {
+//            float[] sample = getSensorReading(); // Implement this method to get raw sensor data
+//            for (int j = 0; j < 3; j++) {
+//                sumAccel[j] += sample[j];
+//            }
+//        }
+//        for (int i = 0; i < 3; i++) {
+//            sumAccel[i] /= numSamples;
+//        }
+//        // Store this average as the zero offset and subtract it from future readings
+//    }
+}

app/src/main/res/drawable/ic_launcher_background.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>

app/src/main/res/drawable/ic_launcher_foreground.xml

@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>

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

@@ -0,0 +1,63 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/main"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
+    <TextView
+        android:id="@+id/textX"
+        android:layout_width="209dp"
+        android:layout_height="79dp"
+        android:layout_marginStart="91dp"
+        android:layout_marginLeft="91dp"
+        android:layout_marginEnd="111dp"
+        android:layout_marginRight="111dp"
+        android:gravity="center"
+        android:text=""
+        android:textSize="30sp"
+        app:layout_constraintBottom_toTopOf="@+id/textY"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="1.0"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:ignore="MissingConstraints" />
+    <TextView
+        android:id="@+id/textY"
+        android:layout_width="209dp"
+        android:layout_height="79dp"
+        android:layout_marginStart="91dp"
+        android:layout_marginLeft="91dp"
+        android:layout_marginEnd="111dp"
+        android:layout_marginRight="111dp"
+        android:layout_marginBottom="8dp"
+        android:gravity="center"
+        android:text=""
+        android:textSize="30sp"
+        app:layout_constraintBottom_toTopOf="@+id/textZ"
+        app:layout_constraintEnd_toEndOf="@+id/textX"
+        app:layout_constraintHorizontal_bias="0.445"
+        app:layout_constraintStart_toStartOf="@+id/textX"
+        app:layout_constraintTop_toBottomOf="@+id/textX"
+        tools:ignore="MissingConstraints" />
+    <TextView
+        android:id="@+id/textZ"
+        android:layout_width="209dp"
+        android:layout_height="79dp"
+        android:layout_marginStart="153dp"
+        android:layout_marginLeft="153dp"
+        android:layout_marginEnd="49dp"
+        android:layout_marginRight="49dp"
+        android:layout_marginBottom="241dp"
+        android:gravity="center"
+        android:text=""
+        android:textSize="30sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="@+id/textY"
+        app:layout_constraintHorizontal_bias="0.757"
+        app:layout_constraintStart_toStartOf="@+id/textY"
+        app:layout_constraintTop_toBottomOf="@+id/textY"
+        tools:ignore="MissingConstraints" />
+</androidx.constraintlayout.widget.ConstraintLayout>
+

app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

app/src/main/res/values-night/themes.xml

@@ -0,0 +1,7 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Base.Theme.Androidpositiontracking" parent="Theme.Material3.DayNight.NoActionBar">
+        <!-- Customize your dark theme here. -->
+        <!-- <item name="colorPrimary">@color/my_dark_primary</item> -->
+    </style>
+</resources>

app/src/main/res/values/colors.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>

app/src/main/res/values/strings.xml

@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">android-position-tracking</string>
+</resources>

app/src/main/res/values/themes.xml

@@ -0,0 +1,9 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Base.Theme.Androidpositiontracking" parent="Theme.Material3.DayNight.NoActionBar">
+        <!-- Customize your light theme here. -->
+        <!-- <item name="colorPrimary">@color/my_light_primary</item> -->
+    </style>
+
+    <style name="Theme.Androidpositiontracking" parent="Base.Theme.Androidpositiontracking" />
+</resources>

app/src/main/res/xml/backup_rules.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample backup rules file; uncomment and customize as necessary.
+   See https://developer.android.com/guide/topics/data/autobackup
+   for details.
+   Note: This file is ignored for devices older that API 31
+   See https://developer.android.com/about/versions/12/backup-restore
+-->
+<full-backup-content>
+    <!--
+   <include domain="sharedpref" path="."/>
+   <exclude domain="sharedpref" path="device.xml"/>
+-->
+</full-backup-content>

app/src/main/res/xml/data_extraction_rules.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample data extraction rules file; uncomment and customize as necessary.
+   See https://developer.android.com/about/versions/12/backup-restore#xml-changes
+   for details.
+-->
+<data-extraction-rules>
+    <cloud-backup>
+        <!-- TODO: Use <include> and <exclude> to control what is backed up.
+        <include .../>
+        <exclude .../>
+        -->
+    </cloud-backup>
+    <!--
+    <device-transfer>
+        <include .../>
+        <exclude .../>
+    </device-transfer>
+    -->
+</data-extraction-rules>

app/src/test/java/com/astatin3/android_position_tracking/ExampleUnitTest.java

@@ -0,0 +1,17 @@
+package com.astatin3.android_position_tracking;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}

build.gradle.kts

@@ -0,0 +1,4 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+plugins {
+    alias(libs.plugins.androidApplication) apply false
+}

gradle.properties

@@ -0,0 +1,21 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. For more details, visit
+# https://developer.android.com/r/tools/gradle-multi-project-decoupled-projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app's APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+# Enables namespacing of each library's R class so that its R class includes only the
+# resources declared in the library itself and none from the library's dependencies,
+# thereby reducing the size of the R class for that library
+android.nonTransitiveRClass=true

gradle/libs.versions.toml

@@ -0,0 +1,22 @@
+[versions]
+agp = "8.3.1"
+junit = "4.13.2"
+junitVersion = "1.2.1"
+espressoCore = "3.6.1"
+appcompat = "1.7.0"
+material = "1.12.0"
+activity = "1.8.0"
+constraintlayout = "2.1.4"
+
+[libraries]
+junit = { group = "junit", name = "junit", version.ref = "junit" }
+ext-junit = { group = "androidx.test.ext", name = "junit", version.ref = "junitVersion" }
+espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version.ref = "espressoCore" }
+appcompat = { group = "androidx.appcompat", name = "appcompat", version.ref = "appcompat" }
+material = { group = "com.google.android.material", name = "material", version.ref = "material" }
+activity = { group = "androidx.activity", name = "activity", version.ref = "activity" }
+constraintlayout = { group = "androidx.constraintlayout", name = "constraintlayout", version.ref = "constraintlayout" }
+
+[plugins]
+androidApplication = { id = "com.android.application", version.ref = "agp" }
+

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Sun Jul 21 14:38:02 MDT 2024
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle.kts

@@ -0,0 +1,24 @@
+pluginManagement {
+    repositories {
+        google {
+            content {
+                includeGroupByRegex("com\\.android.*")
+                includeGroupByRegex("com\\.google.*")
+                includeGroupByRegex("androidx.*")
+            }
+        }
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+rootProject.name = "android-position-tracking"
+include(":app")
+