我不认为这是这样做的正确地方，因为这里没有特别的问题。你要求的是完整的逻辑实现

以下是我们在撰写时可以做到的方法

val cameraPermissionState = rememberPermissionState(Manifest.permission.ACCESS_FINE_LOCATION)
val requestPermissionLauncher = rememberLauncherForActivityResult(
    ActivityResultContracts.RequestPermission()
) { isGranted ->
    if (isGranted) {
        // Permission granted
        viewModel.fetchLocation()
    } else {
        // Handle permission denial

    }
}
LaunchedEffect(cameraPermissionState) {
    if (!cameraPermissionState.status.isGranted && cameraPermissionState.status.shouldShowRationale) {
        //Show rational dialog explaining why app want this permission
    } else {
        requestPermissionLauncher.launch(Manifest.permission.ACCESS_FINE_LOCATION)
    }
}

当然，我们必须像下面这样在清单中添加权限，否则它在这里也不会起作用。

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

以下是在 kotlin 中获取位置的主要逻辑

fun fetchLocation(context: Context) {
    Log.d(TAG, "onLocationResult:TestLocation>>Searching")
    val fusedLocationClient = LocationServices.getFusedLocationProviderClient(context as Activity)

    val locationRequest = LocationRequest.Builder(Priority.PRIORITY_HIGH_ACCURACY, 10000)
        .setWaitForAccurateLocation(true)
        .setMinUpdateIntervalMillis(5000)
        .setMaxUpdateDelayMillis(15000)
        .build()

    var locationCallback: LocationCallback? = null

    locationCallback = object : LocationCallback() {
        override fun onLocationResult(locationResult: LocationResult) {
            for (location in locationResult.locations) {
                // Handle the received location object
                val latitude = location.latitude
                val longitude = location.longitude

                Log.d(TAG, "onLocationResult:TestLocation>>$latitude,$longitude")
                locationCallback?.let {
                    fusedLocationClient.removeLocationUpdates(it)
                }
                // ... use the location data
            }
        }
    }
    fusedLocationClient.requestLocationUpdates(locationRequest, locationCallback, Looper.getMainLooper())
}

与旧式 xml java 相比，在 kotlin compose 中，它变得非常简单

要在最新的 Android 15 中获取位置，您应该使用 Fused Location Provider API，它是 Google Play 服务的一部分。此 API 提供了一种简单有效的方法来获取设备的位置，具有高精度和低功耗。 步骤：

1. 添加依赖项：将必要的依赖项添加到您的 build.gradle 文件：

dependencies {
    implementation 'com.google.android.gms:play-services-location:21.0.1'
}

2. 请求权限：更新您的 AndroidManifest.xml 以包含必要的位置权限：

XML

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

3. 在运行时检查权限：确保在运行时检查并请求位置权限：

Java

if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
    ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
    ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION}, LOCATION_REQUEST_CODE);
    return;
}

4. 初始化FusedLocationProviderClient：在您的活动中创建FusedLocationProviderClient的实例：

Java

private FusedLocationProviderClient fusedLocationClient;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    fusedLocationClient = LocationServices.getFusedLocationProviderClient(this);
}

5. 获取最后已知位置：使用 getLastLocation 方法获取最后已知位置：

Java

fusedLocationClient.getLastLocation()
    .addOnSuccessListener(this, new OnSuccessListener<Location>() {
        @Override
        public void onSuccess(Location location) {
            // Got last known location. In some rare situations, this can be null.
            if (location != null) {
                double latitude = location.getLatitude();
                double longitude = location.getLongitude();
                // Use the location data
            }
        }
    });