I am trying to get location of the virtual device AVD the problem here that the location return by null , i have added the permission to the app and still failed to get location
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.
Log.i("Location Info","Permission Denied");
return;
}
Location location = locationManager.getLastKnownLocation(provider);
if (location != null) {
Log.i("Location Info","Location Achieved ");
} else {
Log.i("Location Info", "Location Failed");
}
}
#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 longitude = location.getLongitude();
Double latitude = location.getLatitude();
Log.i("location Info Lat",longitude.toString());
Log.i("Location Info long",longitude.toString());
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
#Override
public void onProviderEnabled(String provider) {
}
#Override
public void onProviderDisabled(String provider) {
}
the result is all the time log info :Location Failed , what is the solution in this case
Location is null on emulator because it doesen't know your last sent location (fresh start or something else). You need to send your coordinates to emulator. Works better when you test on a real device.
Edit:
Enter coordinates like in this image.
The problem here was as mentioned by #Florescu it starts from unknown state when i give the emulator the dimension for the first time , find out the emulator understand this as a movement but when i run it again it gives me the correct behavior
Related
Hi I am using this function in a service to get my current location when I read something in the Bluetooth listener, but when the code run in foreground after few second the RequestLocationUpdate stop getting any result, and if I open the app it starts to run well again.
Someone know why? Thanks
private void getCurrentLocation() {
LocationRequest locationRequest = new LocationRequest();
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
if (ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(context, 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;
}
LocationServices.getFusedLocationProviderClient(context)
.requestLocationUpdates(locationRequest, new LocationCallback() {
#Override
public void onLocationResult(LocationResult locationResult) {
super.onLocationResult(locationResult);
LocationServices.getFusedLocationProviderClient(context)
.removeLocationUpdates(this);
if (locationResult != null && locationResult.getLocations().size() > 0) {
int latestlocationindex= locationResult.getLocations().size()-1;
lat=String.valueOf(locationResult.getLocations().get(latestlocationindex).getLatitude());
lon=String.valueOf(locationResult.getLocations().get(latestlocationindex).getLongitude());
}
}
}, Looper.getMainLooper());
}
I am not able to understand the forced need of permission check in my code.
Moreover, even after doing that, the location is null.
This is the code of my onCreate method:
Please help!!
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textView = (TextView) findViewById(R.id.textView);
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
provider = locationManager.getBestProvider(new Criteria(), false);
if(provider.equals(null)){
Log.i("provdier","prob");
}
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", "achieved");
textView.setText("Achieved");
} else {
Log.i("location info", "failed");
textView.setText("Failed");
}
}
Try this.
private Location getLastKnownLocation() {
LocationManager mLocationManager = (LocationManager) getApplicationContext().getSystemService(LOCATION_SERVICE);
List<String> providers = mLocationManager.getProviders(true);
Location bestLocation = null;
for (String provider : providers) {
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 TODO;
}
Location l = mLocationManager.getLastKnownLocation(provider);
if (l == null) {
continue;
}
if (bestLocation == null || l.getAccuracy() < bestLocation.getAccuracy()) {
// Found best last known location: %s", l);
bestLocation = l;
}
}
return bestLocation;
}
I am writing a code to get lastknownlocation from location manager and this prompted me to add runtime permissions.
Here is my code:
public class MainActivity extends AppCompatActivity implements LocationListener {
LocationManager locationManager;
String provider;
private final int MY_PERMISSIONS_REQUEST_CODE=1;
Location location;
Boolean isPermissionGranted=false;
#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) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
requestPermissions(new String[]{Manifest.permission.ACCESS_FINE_LOCATION,Manifest.permission.ACCESS_COARSE_LOCATION},MY_PERMISSIONS_REQUEST_CODE);
}
// return;
}
}
public void getlastknownposition()
{
}
#Override
public void onLocationChanged(Location location) {
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
#Override
public void onProviderEnabled(String provider) {
}
#Override
public void onProviderDisabled(String provider) {
}
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if(requestCode == MY_PERMISSIONS_REQUEST_CODE)
{
if(grantResults[0]==PackageManager.PERMISSION_GRANTED && grantResults[1]==PackageManager.PERMISSION_GRANTED){
Toast.makeText(MainActivity.this," granted "+grantResults[0]+"granted2"+grantResults[1], Toast.LENGTH_SHORT).show();
location = locationManager.getLastKnownLocation(provider);}
}
}
}
I am still getting an error "Call requires permission which may be rejected by user: code should explicitly check to see if permission is available (with checkPermission) or explicitly handle a potential SecurityException
in onRequestPermissionsResult on line location = locationManager.getLastKnownLocation(provider);
Put some braces around the second if in onPermissionsResult =)
if(requestCode == MY_PERMISSIONS_REQUEST_CODE){
if(grantResults[0]==PackageManager.PERMISSION_GRANTED && grantResults[1]==PackageManager.PERMISSION_GRANTED){
Toast.makeText(MainActivity.this," granted "+grantResults[0]+"granted2"+grantResults[1], Toast.LENGTH_SHORT).show();
location = locationManager.getLastKnownLocation(provider);
} else {
//TODO handle user saying NO! :)
}
}
Tip: if you request FINE_LOCATION you don't need COARSE, it already includes it.
Replace the line
location = locationManager.getLastKnownLocation(provider);
with
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED
&& ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED)
{
location = locationManager.getLastKnownLocation(provider);
}
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#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
txt = (TextView) findViewById(R.id.txt);
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
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(locationManager.NETWORK_PROVIDER, 0, 0, this);
locationManager.requestLocationUpdates(locationManager.GPS_PROVIDER, 0, 0, this);
}
#Override
public void onLocationChanged(Location location) {
txt=(TextView)findViewById(R.id.txt);
txt.setText("longtude is :" + location.getLongitude() + "latitude is :" + location.getLatitude());
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
#Override
public void onProviderEnabled(String provider) {
}
#Override
public void onProviderDisabled(String provider) {
}
Check given permission in manifest
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
In onCreate add below lines
Location l;
String provider;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
txt = (TextView) findViewById(R.id.txt);
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
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(locationManager.NETWORK_PROVIDER, 0, 0, this);
locationManager.requestLocationUpdates(locationManager.GPS_PROVIDER, 0, 0, this);
Criteria c=new Criteria();
provider=locationManager.getBestProvider(c, false);
l=locationManager.getLastKnownLocation(provider);
if(l!=null)
{
//get latitude and longitude of the location
double lng=l.getLongitude();
double lat=l.getLatitude();
//display on text view
txt.setText(lng+ ""+ lat);
}
else
{
txt.setText("No Provider");
}
}
#Override
public void onLocationChanged(Location arg0)
{
double lng=l.getLongitude();
double lat=l.getLatitude();
txt.setText(lng+ ""+ lat);
}
Hello Everyone I am creating Navigation Application using Android Studio and getting this error while doing.
My Code Stops in if(ActivityCompat.checkSelfPermission) segment. Here i have toast statement. I have already provided COARSE_LOCATION, FINE_LOCATION and INTERNET permission in AndroidManifest file.
Following code given.
public class Second extends Activity implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {
//Declaring Class Objects
Location location;
LocationManager lm;
GoogleApiClient googleApiClient;
//Data type for storing value of Longitude and Latitude
private double fromLongitude;
private double fromLatitude;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.second);
googleApiClient = new GoogleApiClient.Builder(this).addApi(LocationServices.API).addConnectionCallbacks(this).addOnConnectionFailedListener(this).build();
getLocation();
}
private void getLocation() {
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.
Toast.makeText(this,"Issue with permission",Toast.LENGTH_LONG).show();
return;
}
Location location = LocationServices.FusedLocationApi.getLastLocation(googleApiClient);
fromLatitude = location.getLatitude();
fromLongitude = location.getLongitude();
Toast.makeText(this,String.valueOf(fromLatitude)+" "+String.valueOf(fromLongitude),Toast.LENGTH_LONG).show();
}
//Starting Google API Client
#Override
protected void onStart() {
googleApiClient.connect();
super.onStart();
}
//Stopping Google API Client
#Override
protected void onStop() {
googleApiClient.disconnect();
super.onStop();
}
#Override
public void onConnected(Bundle bundle) {
}
#Override
public void onConnectionSuspended(int i) {
}
#Override
public void onConnectionFailed(ConnectionResult connectionResult) {
}
}
This prints "Issue with Permission", that i have toast in if segment.
try
this
checkSelfPermission(Permission) to check is permission is granted already or not.
requestPermissions(String[] permissions, int requestCode) to request for permissions.
onRequestPermissionsResult(int permsRequestCode, String[] permissions, int[] grantResults) to check for results whether permission is granted or not.
Request Permission like this
private void askForPermission() {
int hasWriteContactsPermission = checkSelfPermission(Manifest.permission.CAMERA);
if (hasWriteContactsPermission != PackageManager.PERMISSION_GRANTED) {
if(!shouldShowRequestPermissionRationale(Manifest.permission.CAMERA)) {
showMessageOKCancel("You need to allow access to Contacts",
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
requestPermissions(new String[]{Manifest.permission.CAMERA},REQUEST_CODE_ASK_PERMISSIONS);
}
});
return;
}
requestPermissions(new String[] {Manifest.permission.CAMERA},
REQUEST_CODE_ASK_PERMISSIONS);
return;
}
}
Refer here to understand in detail https://coderzpassion.com/android-new-runtime-permissions/