Я хочу получить текущую позицию моего телефона на Kotlin.
Это мой основной код (взято из https://androidteachers.com/kotlin-for-android/get-location-in-android-with-kotlin):
package com.anta40.app.locationtest;
import android.Manifest
import android.content.Context
import android.content.DialogInterface
import android.content.Intent
import android.content.pm.PackageManager
import android.location.Location
import android.location.LocationManager
import android.support.v7.app.AppCompatActivity
import android.os.Bundle
import android.provider.Settings
import android.support.v4.app.ActivityCompat
import android.support.v7.app.AlertDialog
import android.widget.Toast
import com.google.android.gms.common.ConnectionResult
import com.google.android.gms.common.api.GoogleApiClient
import com.google.android.gms.location.FusedLocationProviderClient
import com.google.android.gms.location.LocationRequest
import com.google.android.gms.location.LocationServices
import com.google.android.gms.tasks.OnSuccessListener
import kotlinx.android.synthetic.main.activity_main.*
class MainActivity : AppCompatActivity(), GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener,
com.google.android.gms.location.LocationListener {
private val TAG = "MainActivity"
private lateinit var mGoogleApiClient: GoogleApiClient
private var mLocationManager: LocationManager? = null
lateinit var mLocation: Location
private var mLocationRequest: LocationRequest? = null
private val listener: com.google.android.gms.location.LocationListener? = null
private val UPDATE_INTERVAL = (2 * 1000).toLong() /* 10 secs */
private val FASTEST_INTERVAL: Long = 2000 /* 2 sec */
lateinit var locationManager: LocationManager
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
mGoogleApiClient = GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build()
mLocationManager = this.getSystemService(Context.LOCATION_SERVICE) as LocationManager
checkLocation()
}
override fun onStart() {
super.onStart()
if (mGoogleApiClient != null) {
mGoogleApiClient.connect();
}
}
override fun onStop() {
super.onStop()
if (mGoogleApiClient.isConnected()) {
mGoogleApiClient.disconnect();
}
}
override fun onConnected(p0: Bundle?) {
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
startLocationUpdates();
var fusedLocationProviderClient :
FusedLocationProviderClient = LocationServices.getFusedLocationProviderClient(this);
fusedLocationProviderClient .getLastLocation()
.addOnSuccessListener(this, OnSuccessListener<Location> { location ->
// Got last known location. In some rare situations this can be null.
if (location != null) {
// Logic to handle location object
mLocation = location;
txt_latitude.setText("" + mLocation.latitude)
txt_longitude.setText("" + mLocation.longitude)
Toast.makeText(
applicationContext, "Position: (" + mLocation.latitude.toString() + "," +
mLocation.longitude.toString(),
Toast.LENGTH_SHORT
).show()
}
})
}
override fun onConnectionSuspended(p0: Int) {
mGoogleApiClient.connect();
Toast.makeText(applicationContext, "Connection suspended...", Toast.LENGTH_SHORT).show()
}
override fun onConnectionFailed(p0: ConnectionResult) {
Toast.makeText(applicationContext, "Connection error: "+p0.errorMessage, Toast.LENGTH_SHORT).show()
}
override fun onLocationChanged(p0: Location?) {
if (p0 != null) {
Toast.makeText(
applicationContext, "Position: (" + p0.latitude.toString() + "," + p0.longitude.toString(),
Toast.LENGTH_SHORT
).show()
txt_latitude.setText("" + mLocation.latitude)
txt_longitude.setText("" + mLocation.longitude)
}
}
private fun checkLocation(): Boolean {
if(!isLocationEnabled())
showAlert();
return isLocationEnabled();
}
private fun isLocationEnabled(): Boolean {
locationManager = getSystemService(Context.LOCATION_SERVICE) as LocationManager
return locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER) || locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)
}
private fun showAlert() {
val dialog = AlertDialog.Builder(this)
dialog.setTitle("Enable Location")
.setMessage("Your Locations Settings is set to 'Off'.\nPlease Enable Location to " + "use this app")
.setPositiveButton("Location Settings", DialogInterface.OnClickListener { paramDialogInterface, paramInt ->
val myIntent = Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS)
startActivity(myIntent)
})
.setNegativeButton("Cancel", DialogInterface.OnClickListener { paramDialogInterface, paramInt -> })
dialog.show()
}
protected fun startLocationUpdates() {
// Create the location request
mLocationRequest = LocationRequest.create()
.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY)
.setInterval(UPDATE_INTERVAL)
.setFastestInterval(FASTEST_INTERVAL);
// Request location updates
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient,
mLocationRequest, this);
}
}
Я запускаю код на нерутированном телефоне Android под управлением Android 8 (без SIM-карты, только WiFi). Доступ к местоположению уже включен. Тем не менее, приложение не отображает местоположение. При отладке не было указано указанной ошибки.
Что здесь не так?