Kopirati u  <manifest, u AndroidMainfest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>

    <application
        android:allowBackup="true"
        android:label="GPS Brzina"
        android:icon="@mipmap/ic_launcher"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.GPSBrzina">
        <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>



Kopirati u activity_main.xml


<?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/rootLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#F5F5F5"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/titleText"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="GPS Podaci"
        android:textSize="24sp"
        android:textStyle="bold"
        android:textColor="#333"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        android:layout_marginTop="32dp"/>

    <TextView
        android:id="@+id/locationText"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:text="Lokacija:"
        android:textSize="18sp"
        android:textColor="#000"
        app:layout_constraintTop_toBottomOf="@id/titleText"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        android:layout_marginTop="24dp"
        android:layout_marginHorizontal="24dp"/>

    <TextView
        android:id="@+id/speedText"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:text="Brzina:"
        android:textSize="18sp"
        android:textColor="#000"
        app:layout_constraintTop_toBottomOf="@id/locationText"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        android:layout_marginTop="16dp"
        android:layout_marginHorizontal="24dp"/>

    <TextView
        android:id="@+id/accelerationText"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:text="Ubrzanje:"
        android:textSize="18sp"
        android:textColor="#000"
        app:layout_constraintTop_toBottomOf="@id/speedText"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        android:layout_marginTop="16dp"
        android:layout_marginHorizontal="24dp"/>

    <TextView
        android:id="@+id/elevationText"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:text="Nadmorska visina:"
        android:textSize="18sp"
        android:textColor="#000"
        app:layout_constraintTop_toBottomOf="@id/accelerationText"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        android:layout_marginTop="16dp"
        android:layout_marginHorizontal="24dp"/>

</androidx.constraintlayout.widget.ConstraintLayout>






Kopirati u main_activity.kt






package com.example.gpsbrzina

import android.Manifest
import android.content.pm.PackageManager
import android.hardware.Sensor
import android.hardware.SensorEvent
import android.hardware.SensorEventListener
import android.hardware.SensorManager
import android.location.Location
import android.os.Bundle
import android.widget.TextView
import androidx.appcompat.app.AppCompatActivity
import androidx.core.app.ActivityCompat
import com.google.android.gms.location.*

class MainActivity : AppCompatActivity(), SensorEventListener {

    private lateinit var locationText: TextView
    private lateinit var speedText: TextView
    private lateinit var accelerationText: TextView
    private lateinit var elevationText: TextView

    private lateinit var fusedLocationClient: FusedLocationProviderClient
    private lateinit var sensorManager: SensorManager

    private var acceleration = 0.0
    private var currentAcceleration = 0.0
    private var lastAcceleration = 0.0

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        locationText = findViewById(R.id.locationText)
        speedText = findViewById(R.id.speedText)
        accelerationText = findViewById(R.id.accelerationText)
        elevationText = findViewById(R.id.elevationText)

        fusedLocationClient = LocationServices.getFusedLocationProviderClient(this)
        sensorManager = getSystemService(SENSOR_SERVICE) as SensorManager

        requestLocationUpdates()
    }

    private fun requestLocationUpdates() {
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(this, arrayOf(Manifest.permission.ACCESS_FINE_LOCATION), 100)
            return
        }

        val locationRequest = LocationRequest.create().apply {
            interval = 2000
            fastestInterval = 1000
            priority = LocationRequest.PRIORITY_HIGH_ACCURACY
        }

        fusedLocationClient.requestLocationUpdates(locationRequest, object : LocationCallback() {
            override fun onLocationResult(result: LocationResult) {
                result.lastLocation?.let { location ->
                    val latitude = location.latitude
                    val longitude = location.longitude
                    val speedKmh = location.speed * 3.6
                    val altitude = location.altitude

                    locationText.text = "Lokacija: $latitude, $longitude"
                    speedText.text = "Brzina: %.2f km/h".format(speedKmh)
                    elevationText.text = "Nadmorska visina: %.2f m".format(altitude)
                }
            }
        }, mainLooper)
    }

    override fun onResume() {
        super.onResume()
        sensorManager.registerListener(
            this,
            sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),
            SensorManager.SENSOR_DELAY_NORMAL
        )
    }

    override fun onPause() {
        super.onPause()
        sensorManager.unregisterListener(this)
    }

    override fun onSensorChanged(event: SensorEvent?) {
        if (event?.sensor?.type == Sensor.TYPE_ACCELEROMETER) {
            val x = event.values[0]
            val y = event.values[1]
            val z = event.values[2]

            lastAcceleration = currentAcceleration
            currentAcceleration = Math.sqrt((x * x + y * y + z * z).toDouble())
            val delta = currentAcceleration - lastAcceleration
            acceleration = acceleration * 0.9 + delta

            accelerationText.text = "Ubrzanje: %.2f m/s²".format(acceleration)
        }
    }

    override fun onAccuracyChanged(sensor: Sensor?, accuracy: Int) {}
}





Kopirati u build.gradle.kts(Module :app)






plugins {
    id("com.android.application")
    id("org.jetbrains.kotlin.android")
}

android {
    namespace = "com.example.gpsbrzina"
    compileSdk = 34

    defaultConfig {
        applicationId = "com.example.gpsbrzina"
        minSdk = 21
        targetSdk = 34
        versionCode = 1
        versionName = "1.0"

        // Dodaj ovo ako koristiš lokaciju
        missingDimensionStrategy("location", "playServices")
    }

    buildTypes {
        release {
            isMinifyEnabled = false
            proguardFiles(
                getDefaultProguardFile("proguard-android-optimize.txt"),
                "proguard-rules.pro"
            )
        }
    }

    buildFeatures {
        viewBinding = true
    }

    // ✅ OVDE DODAJ
    compileOptions {
        sourceCompatibility = JavaVersion.VERSION_1_8
        targetCompatibility = JavaVersion.VERSION_1_8
    }

    kotlinOptions {
        jvmTarget = "1.8"
    }
}

dependencies {
    implementation("androidx.core:core-ktx:1.13.1")
    implementation("androidx.appcompat:appcompat:1.6.1")
    implementation("com.google.android.material:material:1.11.0")
    implementation("com.google.android.gms:play-services-location:21.0.1")
    implementation("androidx.constraintlayout:constraintlayout:2.1.4")
}