Comment demander une autorisation d'emplacement au moment de l'exécution
Dans le fichier manifeste, j'ai ajouté des autorisations grossières et correctes, et lorsque je tourne sur un périphérique avec Android 6, rien ne se passe! J'essaie tout mais aucun moyen d'obtenir des mises à jour d'emplacement ...
Qu'est-ce que je fais mal?
public class MainActivity extends AppCompatActivity implements LocationListener {
LocationManager locationManager;
String provider;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
provider = locationManager.getBestProvider(new Criteria(), false);
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
Location location = locationManager.getLastKnownLocation(provider);
if (location != null) {
Log.i("Location Info", "Location achieved!");
} else {
Log.i("Location Info", "No location :(");
}
}
@Override
protected void onResume() {
super.onResume();
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
locationManager.requestLocationUpdates(provider, 400, 1, this);
}
@Override
protected void onPause() {
super.onPause();
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
locationManager.removeUpdates(this);
}
@Override
public void onLocationChanged(Location location) {
Double lat = location.getLatitude();
Double lng = location.getLongitude();
Log.i("Location info: Lat", lat.toString());
Log.i("Location info: Lng", lng.toString());
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
}
public void getLocation(View view) {
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
Location location = locationManager.getLastKnownLocation(provider);
onLocationChanged(location);
}
}
Vous devez réellement demander l'autorisation d'emplacement au moment de l'exécution (remarquez les commentaires dans votre code qui l'indiquent).
Ici, le code est testé et fonctionnel pour demander l’autorisation d’emplacement.
Assurez-vous d'importer Android.Manifest:
import Android.Manifest;
Ensuite, mettez ce code dans l'activité:
public static final int MY_PERMISSIONS_REQUEST_LOCATION = 99;
public boolean checkLocationPermission() {
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
// Should we show an explanation?
if (ActivityCompat.shouldShowRequestPermissionRationale(this,
Manifest.permission.ACCESS_FINE_LOCATION)) {
// Show an explanation to the user *asynchronously* -- don't block
// this thread waiting for the user's response! After the user
// sees the explanation, try again to request the permission.
new AlertDialog.Builder(this)
.setTitle(R.string.title_location_permission)
.setMessage(R.string.text_location_permission)
.setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
//Prompt the user once explanation has been shown
ActivityCompat.requestPermissions(MainActivity.this,
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
MY_PERMISSIONS_REQUEST_LOCATION);
}
})
.create()
.show();
} else {
// No explanation needed, we can request the permission.
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
MY_PERMISSIONS_REQUEST_LOCATION);
}
return false;
} else {
return true;
}
}
@Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
switch (requestCode) {
case MY_PERMISSIONS_REQUEST_LOCATION: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// permission was granted, yay! Do the
// location-related task you need to do.
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
//Request location updates:
locationManager.requestLocationUpdates(provider, 400, 1, this);
}
} else {
// permission denied, boo! Disable the
// functionality that depends on this permission.
}
return;
}
}
}
Puis appelez la méthode checkLocationPermission() dans onCreate():
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//.........
checkLocationPermission();
}
Vous pouvez ensuite utiliser onResume() et onPause() exactement comme dans la question.
Voici une version condensée un peu plus propre:
@Override
protected void onResume() {
super.onResume();
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
locationManager.requestLocationUpdates(provider, 400, 1, this);
}
}
@Override
protected void onPause() {
super.onPause();
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
locationManager.removeUpdates(this);
}
}
Google a créé une bibliothèque pour faciliter la gestion des autorisations. Son appelé EasyPermissions
Voici un exemple simple de demande d'autorisation d'emplacement à l'aide de cette bibliothèque.
public class MainActivity extends AppCompatActivity {
private final int REQUEST_LOCATION_PERMISSION = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
requestLocationPermission();
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
// Forward results to EasyPermissions
EasyPermissions.onRequestPermissionsResult(requestCode, permissions, grantResults, this);
}
@AfterPermissionGranted(REQUEST_LOCATION_PERMISSION)
public void requestLocationPermission() {
String[] perms = {Manifest.permission.ACCESS_FINE_LOCATION};
if(EasyPermissions.hasPermissions(this, perms)) {
Toast.makeText(this, "Permission already granted", Toast.LENGTH_SHORT).show();
}
else {
EasyPermissions.requestPermissions(this, "Please grant the location permission", REQUEST_LOCATION_PERMISSION, perms);
}
}
}
@AfterPermissionsGranted(REQUEST_CODE) est utilisé pour indiquer la méthode à exécuter après qu'une demande d'autorisation avec le code de demande REQUEST_CODE a été accordée.
Dans ce cas ci-dessus, la méthode requestLocationPermission() est appelée si l'utilisateur accorde l'autorisation d'accéder aux services de localisation. Ainsi, cette méthode agit à la fois comme un rappel et une méthode pour demander les autorisations.
Vous pouvez également implémenter des rappels distincts pour les autorisations accordées et les autorisations refusées. C'est expliqué dans la page github.
J'aime le code court. J'utilise RxPermission pour les autorisations.
Ajoutez d’abord ces autorisations (ou une de celles dont vous avez besoin) dans votre manifest.xml.
<uses-permission Android:name="Android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission Android:name="Android.permission.ACCESS_FINE_LOCATION" />
Puis demandez à l'utilisateur la permission d'exécution de votre activité.
RxPermissions rxPermissions = new RxPermissions(this);
rxPermissions
.request(Manifest.permission.ACCESS_FINE_LOCATION,
Manifest.permission.ACCESS_COARSE_LOCATION) // ask single or multiple permission once
.subscribe(granted -> {
if (granted) {
// All requested permissions are granted
} else {
// At least one permission is denied
}
});
ajoutez cette bibliothèque dans votre build.gradle
allprojects {
repositories {
...
maven { url 'https://jitpack.io' }
}
}
dependencies {
implementation 'com.github.tbruyelle:rxpermissions:0.10.1'
implementation 'com.jakewharton.rxbinding2:rxbinding:2.1.1'
}
N'est-ce pas facile?
vérifier ce code de MainActivity
// Check location permission is granted - if it is, start
// the service, otherwise request the permission
fun checkOrAskLocationPermission(callback: () -> Unit) {
// Check GPS is enabled
val lm = getSystemService(Context.LOCATION_SERVICE) as LocationManager
if (!lm.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
Toast.makeText(this, "Please enable location services", Toast.LENGTH_SHORT).show()
buildAlertMessageNoGps(this)
return
}
// Check location permission is granted - if it is, start
// the service, otherwise request the permission
val permission = ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)
if (permission == PackageManager.PERMISSION_GRANTED) {
callback.invoke()
} else {
// callback will be inside the activity's onRequestPermissionsResult(
ActivityCompat.requestPermissions(
this,
arrayOf(Manifest.permission.ACCESS_FINE_LOCATION),
PERMISSIONS_REQUEST
)
}
}
plus
override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults)
if (requestCode == PERMISSIONS_REQUEST) {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED){
// Permission ok. Do work.
}
}
}
plus
fun buildAlertMessageNoGps(context: Context) {
val builder = AlertDialog.Builder(context);
builder.setMessage("Your GPS is disabled. Do you want to enable it?")
.setCancelable(false)
.setPositiveButton("Yes") { _, _ -> context.startActivity(Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS)) }
.setNegativeButton("No") { dialog, _ -> dialog.cancel(); }
val alert = builder.create();
alert.show();
}
usage
checkOrAskLocationPermission() {
// Permission ok. Do work.
}
Ce code fonctionne pour moi. J'ai aussi traité le cas "Never Ask Me"
Dans AndroidManifest.xml
<uses-permission Android:name="Android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission Android:name="Android.permission.ACCESS_FINE_LOCATION" />
Dans build.gradle (module: app)
dependencies {
....
implementation "com.google.Android.gms:play-services-location:16.0.0"
}
C'est CurrentLocationManager.kt
import Android.Manifest
import Android.app.Activity
import Android.content.Context
import Android.content.IntentSender
import Android.content.pm.PackageManager
import Android.location.Location
import Android.location.LocationListener
import Android.location.LocationManager
import Android.os.Bundle
import Android.os.CountDownTimer
import Android.support.v4.app.ActivityCompat
import Android.support.v4.content.ContextCompat
import Android.util.Log
import com.google.Android.gms.common.api.ApiException
import com.google.Android.gms.common.api.CommonStatusCodes
import com.google.Android.gms.common.api.ResolvableApiException
import com.google.Android.gms.location.LocationRequest
import com.google.Android.gms.location.LocationServices
import com.google.Android.gms.location.LocationSettingsRequest
import com.google.Android.gms.location.LocationSettingsStatusCodes
import Java.lang.ref.WeakReference
object CurrentLocationManager : LocationListener {
const val REQUEST_CODE_ACCESS_LOCATION = 123
fun checkLocationPermission(activity: Activity) {
if (ContextCompat.checkSelfPermission(
activity,
Manifest.permission.ACCESS_FINE_LOCATION
) != PackageManager.PERMISSION_GRANTED
) {
ActivityCompat.requestPermissions(
activity,
arrayOf(Manifest.permission.ACCESS_FINE_LOCATION),
REQUEST_CODE_ACCESS_LOCATION
)
} else {
Thread(Runnable {
// Moves the current Thread into the background
Android.os.Process.setThreadPriority(Android.os.Process.THREAD_PRIORITY_BACKGROUND)
//
requestLocationUpdates(activity)
}).start()
}
}
/**
* be used in HomeActivity.
*/
const val REQUEST_CHECK_SETTINGS = 55
/**
* The number of millis in the future from the call to start().
* until the countdown is done and onFinish() is called.
*
*
* It is also the interval along the way to receive onTick(long) callbacks.
*/
private const val TWENTY_SECS: Long = 20000
/**
* Timer to get location from history when requestLocationUpdates don't return result.
*/
private var mCountDownTimer: CountDownTimer? = null
/**
* WeakReference of current activity.
*/
private var mWeakReferenceActivity: WeakReference<Activity>? = null
/**
* user's location.
*/
var currentLocation: Location? = null
@Synchronized
fun requestLocationUpdates(activity: Activity) {
if (mWeakReferenceActivity == null) {
mWeakReferenceActivity = WeakReference(activity)
} else {
mWeakReferenceActivity?.clear()
mWeakReferenceActivity = WeakReference(activity)
}
//create location request: https://developer.Android.com/training/location/change-location-settings.html#Prompt
val mLocationRequest = LocationRequest()
// Which your app prefers to receive location updates. Note that the location updates may be
// faster than this rate, or slower than this rate, or there may be no updates at all
// (if the device has no connectivity)
mLocationRequest.interval = 20000
//This method sets the fastest rate in milliseconds at which your app can handle location updates.
// You need to set this rate because other apps also affect the rate at which updates are sent
mLocationRequest.fastestInterval = 10000
mLocationRequest.priority = LocationRequest.PRIORITY_HIGH_ACCURACY
//Get Current Location Settings
val builder = LocationSettingsRequest.Builder().addLocationRequest(mLocationRequest)
//Next check whether the current location settings are satisfied
val client = LocationServices.getSettingsClient(activity)
val task = client.checkLocationSettings(builder.build())
//Prompt the User to Change Location Settings
task.addOnSuccessListener(activity) {
Log.d("CurrentLocationManager", "OnSuccessListener")
// All location settings are satisfied. The client can initialize location requests here.
// If it's failed, the result after user updated setting is sent to onActivityResult of HomeActivity.
val activity1 = mWeakReferenceActivity?.get()
if (activity1 != null) {
startRequestLocationUpdate(activity1.applicationContext)
}
}
task.addOnFailureListener(activity) { e ->
Log.d("CurrentLocationManager", "addOnFailureListener")
val statusCode = (e as ApiException).statusCode
when (statusCode) {
CommonStatusCodes.RESOLUTION_REQUIRED ->
// Location settings are not satisfied, but this can be fixed
// by showing the user a dialog.
try {
val activity1 = mWeakReferenceActivity?.get()
if (activity1 != null) {
// Show the dialog by calling startResolutionForResult(),
// and check the result in onActivityResult().
val resolvable = e as ResolvableApiException
resolvable.startResolutionForResult(
activity1, REQUEST_CHECK_SETTINGS
)
}
} catch (sendEx: IntentSender.SendIntentException) {
// Ignore the error.
sendEx.printStackTrace()
}
LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE -> {
// Location settings are not satisfied. However, we have no way
// to fix the settings so we won't show the dialog.
}
}
}
}
fun startRequestLocationUpdate(appContext: Context) {
val mLocationManager = appContext.getSystemService(Context.LOCATION_SERVICE) as LocationManager
if (ActivityCompat.checkSelfPermission(
appContext.applicationContext,
Manifest.permission.ACCESS_FINE_LOCATION
) == PackageManager.PERMISSION_GRANTED
) {
//Utilities.showProgressDialog(mWeakReferenceActivity.get());
if (mLocationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)) {
mLocationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER, 10000, 0f, this
)
} else {
mLocationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER, 10000, 0f, this
)
}
}
/*Timer to call getLastKnownLocation() when requestLocationUpdates don 't return result*/
countDownUpdateLocation()
}
override fun onLocationChanged(location: Location?) {
if (location != null) {
stopRequestLocationUpdates()
currentLocation = location
}
}
override fun onStatusChanged(provider: String, status: Int, extras: Bundle) {
}
override fun onProviderEnabled(provider: String) {
}
override fun onProviderDisabled(provider: String) {
}
/**
* Init CountDownTimer to to get location from history when requestLocationUpdates don't return result.
*/
@Synchronized
private fun countDownUpdateLocation() {
mCountDownTimer?.cancel()
mCountDownTimer = object : CountDownTimer(TWENTY_SECS, TWENTY_SECS) {
override fun onTick(millisUntilFinished: Long) {}
override fun onFinish() {
if (mWeakReferenceActivity != null) {
val activity = mWeakReferenceActivity?.get()
if (activity != null && ActivityCompat.checkSelfPermission(
activity,
Manifest.permission.ACCESS_FINE_LOCATION
) == PackageManager.PERMISSION_GRANTED
) {
val location = (activity.applicationContext
.getSystemService(Context.LOCATION_SERVICE) as LocationManager)
.getLastKnownLocation(LocationManager.PASSIVE_PROVIDER)
stopRequestLocationUpdates()
onLocationChanged(location)
} else {
stopRequestLocationUpdates()
}
} else {
mCountDownTimer?.cancel()
mCountDownTimer = null
}
}
}.start()
}
/**
* The method must be called in onDestroy() of activity to
* removeUpdateLocation and cancel CountDownTimer.
*/
fun stopRequestLocationUpdates() {
val activity = mWeakReferenceActivity?.get()
if (activity != null) {
/*if (ActivityCompat.checkSelfPermission(activity,
Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {*/
(activity.applicationContext
.getSystemService(Context.LOCATION_SERVICE) as LocationManager).removeUpdates(this)
/*}*/
}
mCountDownTimer?.cancel()
mCountDownTimer = null
}
}
Dans MainActivity.kt
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
...
CurrentLocationManager.checkLocationPermission(this@LoginActivity)
}
override fun onDestroy() {
CurrentLocationManager.stopRequestLocationUpdates()
super.onDestroy()
}
override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults)
if (requestCode == CurrentLocationManager.REQUEST_CODE_ACCESS_LOCATION) {
if (grantResults[0] == PackageManager.PERMISSION_DENIED) {
//denied
val builder = AlertDialog.Builder(this)
builder.setMessage("We need permission to use your location for the purpose of finding friends near you.")
.setTitle("Device Location Required")
.setIcon(com.eswapp.R.drawable.ic_info)
.setPositiveButton("OK") { _, _ ->
if (ActivityCompat.shouldShowRequestPermissionRationale(
this,
Manifest.permission.ACCESS_FINE_LOCATION
)
) {
//only deny
CurrentLocationManager.checkLocationPermission(this@LoginActivity)
} else {
//never ask again
val intent = Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS)
val uri = Uri.fromParts("package", packageName, null)
intent.data = uri
startActivityForResult(intent, CurrentLocationManager.REQUEST_CHECK_SETTINGS)
}
}
.setNegativeButton("Ask Me Later") { _, _ ->
}
// Create the AlertDialog object and return it
val dialog = builder.create()
dialog.show()
} else if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
CurrentLocationManager.requestLocationUpdates(this)
}
}
}
//Forward Login result to the CallBackManager in OnActivityResult()
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
when (requestCode) {
//case 1. After you allow the app access device location, Another dialog will be displayed to request you to turn on device location
//case 2. Or You chosen Never Ask Again, you open device Setting and enable location permission
CurrentLocationManager.REQUEST_CHECK_SETTINGS -> when (resultCode) {
RESULT_OK -> {
Log.d("REQUEST_CHECK_SETTINGS", "RESULT_OK")
//case 1. You choose OK
CurrentLocationManager.startRequestLocationUpdate(applicationContext)
}
RESULT_CANCELED -> {
Log.d("REQUEST_CHECK_SETTINGS", "RESULT_CANCELED")
//case 1. You choose NO THANKS
//CurrentLocationManager.requestLocationUpdates(this)
//case 2. In device Setting screen: user can enable or not enable location permission,
// so when user back to this activity, we should re-call checkLocationPermission()
CurrentLocationManager.checkLocationPermission(this@LoginActivity)
}
else -> {
//do nothing
}
}
else -> {
super.onActivityResult(requestCode, resultCode, data)
}
}
}