Standort des Nutzers (Android)

Zeigen Sie den aktuellen Standort des Nutzers auf der Karte an.

MapSession erforderlich

Denken Sie daran, die MapSession in Ihre App zu integrieren. Die MapSession muss alle 10 Minuten aufgerufen werden, solange die Karte aktiv ist.

Berechtigungen

Fügen Sie die folgenden Berechtigungen zu Ihrer AndroidManifest.xml hinzu:

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

Standort-Layer aktivieren

import android.Manifest
import android.content.pm.PackageManager
import androidx.core.app.ActivityCompat
import org.maplibre.android.location.LocationComponentActivationOptions
import org.maplibre.android.location.modes.CameraMode
import org.maplibre.android.location.modes.RenderMode

class MainActivity : AppCompatActivity() {
    private lateinit var mapView: MapView

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

        mapView = findViewById(R.id.mapView)
        mapView.onCreate(savedInstanceState)
        mapView.getMapAsync { map ->
            map.setStyle(
                "https://tiles.smartmaps.cloud/styles/v1/smartmaps/light/style.json?apiKey=[INSERT API-KEY]&channel=app"
            ) { style ->
                enableLocation(map, style)
            }
        }
    }

    private fun enableLocation(map: MapLibreMap, style: Style) {
        if (ActivityCompat.checkSelfPermission(
                this,
                Manifest.permission.ACCESS_FINE_LOCATION
            ) != PackageManager.PERMISSION_GRANTED
        ) {
            ActivityCompat.requestPermissions(
                this,
                arrayOf(Manifest.permission.ACCESS_FINE_LOCATION),
                LOCATION_PERMISSION_REQUEST
            )
            return
        }

        val locationComponent = map.locationComponent
        locationComponent.activateLocationComponent(
            LocationComponentActivationOptions.builder(this, style).build()
        )
        locationComponent.isLocationComponentEnabled = true
        locationComponent.cameraMode = CameraMode.TRACKING
        locationComponent.renderMode = RenderMode.COMPASS
    }

    override fun onRequestPermissionsResult(
        requestCode: Int,
        permissions: Array<String>,
        grantResults: IntArray
    ) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults)
        if (requestCode == LOCATION_PERMISSION_REQUEST &&
            grantResults.isNotEmpty() &&
            grantResults[0] == PackageManager.PERMISSION_GRANTED
        ) {
            mapView.getMapAsync { map ->
                map.style?.let { style -> enableLocation(map, style) }
            }
        }
    }

    companion object {
        private const val LOCATION_PERMISSION_REQUEST = 1
    }

    // Lifecycle methods
    override fun onStart() { super.onStart(); mapView.onStart() }
    override fun onResume() { super.onResume(); mapView.onResume() }
    override fun onPause() { super.onPause(); mapView.onPause() }
    override fun onStop() { super.onStop(); mapView.onStop() }
    override fun onDestroy() { super.onDestroy(); mapView.onDestroy() }
    override fun onSaveInstanceState(outState: Bundle) {
        super.onSaveInstanceState(outState)
        mapView.onSaveInstanceState(outState)
    }
    override fun onLowMemory() { super.onLowMemory(); mapView.onLowMemory() }
}