Draggable marker for android studio

Draggable marker for android studio - java

I need to use google map in android app to get the address from the users. The customer can drag the marker to anywhere in the map and need to select continue.
But my code is working like already there a marker and if you long pressed then a new marker will come and you can drag and drop anywhere, but I need to remove the first marker.
package com.restaurant.grillizadmin;
import androidx.annotation.NonNull;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;
import androidx.fragment.app.FragmentActivity;
import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import com.google.android.gms.location.FusedLocationProviderClient;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.firestore.DocumentReference;
import com.google.firebase.firestore.FirebaseFirestore;
import com.restaurant.grillizadmin.Domain.Items;
import java.io.IOException;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback, GoogleMap.OnMapLongClickListener, GoogleMap.OnMarkerDragListener {
private static final String TAG = "MapsActivity";
private GoogleMap mMap;
private Geocoder geocoder;
private int ACCESS_LOCATION_REQUEST_CODE = 10001;
FusedLocationProviderClient fusedLocationProviderClient;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
geocoder = new Geocoder(this);
fusedLocationProviderClient = LocationServices.getFusedLocationProviderClient(this);
}
/**
* Manipulates the map once available.
* This callback is triggered when the map is ready to be used.
* This is where we can add markers or lines, add listeners or move the camera. In this case,
* we just add a marker near Sydney, Australia.
* If Google Play services is not installed on the device, the user will be prompted to install
* it inside the SupportMapFragment. This method will only be triggered once the user has
* installed Google Play services and returned to the app.
*/
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
mMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
mMap.setOnMapLongClickListener(this);
mMap.setOnMarkerDragListener(this);
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
enableUserLocation();
zoomToUserLocation();
} else {
if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.ACCESS_FINE_LOCATION)) {
//We can show user a dialog why this permission is necessary
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, ACCESS_LOCATION_REQUEST_CODE);
} else {
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, ACCESS_LOCATION_REQUEST_CODE);
}
}
// Add a marker at Taj Mahal and move the camera
// LatLng latLng = new LatLng(27.1751, 78.0421);
// MarkerOptions markerOptions = new MarkerOptions()
// .position(latLng)
// .title("Taj Mahal")
// .snippet("Wonder of the world!");
// mMap.addMarker(markerOptions);
// CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(latLng, 16);
// mMap.animateCamera(cameraUpdate);
try {
List<Address> addresses = geocoder.getFromLocationName("uae", 1);
if (addresses.size() > 0) {
Address address = addresses.get(0);
LatLng london = new LatLng(address.getLatitude(), address.getLongitude());
MarkerOptions markerOptions = new MarkerOptions()
.position(london)
.title(address.getLocality());
mMap.addMarker(markerOptions);
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(london, 16));
}
} catch (IOException e) {
e.printStackTrace();
}
}
private void enableUserLocation() {
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;
}
mMap.setMyLocationEnabled(true);
}
private void zoomToUserLocation() {
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;
}
Task<Location> locationTask = fusedLocationProviderClient.getLastLocation();
locationTask.addOnSuccessListener(new OnSuccessListener<Location>() {
#Override
public void onSuccess(Location location) {
LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(latLng, 20));
mMap.addMarker(new MarkerOptions().position(latLng));
}
});
}
#Override
public void onMapLongClick(LatLng latLng) {
Log.d(TAG, "onMapLongClick: " + latLng.toString());
try {
List<Address> addresses = geocoder.getFromLocation(latLng.latitude, latLng.longitude, 1);
if (addresses.size() > 0) {
Address address = addresses.get(0);
String streetAddress = address.getAddressLine(0);
mMap.addMarker(new MarkerOptions()
.position(latLng)
.title(streetAddress)
.draggable(true)
);
}
} catch (IOException e) {
e.printStackTrace();
}
}
#Override
public void onMarkerDragStart(Marker marker) {
Log.d(TAG, "onMarkerDragStart: ");
}
#Override
public void onMarkerDrag(Marker marker) {
Log.d(TAG, "onMarkerDrag: ");
}
#Override
public void onMarkerDragEnd(Marker marker) {
Log.d(TAG, "onMarkerDragEnd: ");
LatLng latLng = marker.getPosition();
try {
List<Address> addresses = geocoder.getFromLocation(latLng.latitude, latLng.longitude, 1);
if (addresses.size() > 0) {
Address address = addresses.get(0);
String streetAddress = address.getAddressLine(0);
marker.setTitle(streetAddress);
}
} catch (IOException e) {
e.printStackTrace();
}
}
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == ACCESS_LOCATION_REQUEST_CODE) {
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
enableUserLocation();
zoomToUserLocation();
} else {
//We can show a dialog that permission is not granted...
}
}
}
}

In your onMapLongClick method you are saying mMap.addMarker(...). So of coarse you are adding new markers.
Try creating a marker object at the top of your class. And then in your onMapLongClick method, update the location (and make it visible in case you are inclined on hiding it at some point.)

Related

Android Studio JAVA: Send SMS of user's current location ;

I am Trying to Build an app where user can show their location and send an SMS to nearby hospital.
I am new to android studio and everything about it, but I quite made a progress with it.
I have 2 XML files, but I'll provide the JAVA CLASSES first
MapActivity.java
package maptesting.app;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;
import androidx.fragment.app.FragmentActivity;
import android.Manifest;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Color;
import android.location.Address;
import android.location.Criteria;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationManager;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Build;
import android.os.Bundle;
import android.os.Looper;
import android.telephony.SmsManager;
import android.util.Log;
import android.view.View;
import android.widget.EditText;
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.LocationCallback;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapView;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.CircleOptions;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
import java.io.IOException;
import java.util.List;
import maptesting.app.databinding.ActivityMapBinding;
public class MapActivity<mapView> extends FragmentActivity implements OnMapReadyCallback, GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener, LocationListener {
private ActivityMapBinding binding;
private View mapView;
private GoogleMap mMap;
private GoogleApiClient client;
private LocationRequest locationRequest;
private Location lastlocation;
private LocationManager locationManager;
private Marker currentLocationmMarker;
public static final int REQUEST_LOCATION_CODE = 99;
int PROXIMITY_RADIUS = 15000;
double latitude, longitude;
private int LOCATION_MIN_DISTANCE = 20;
private int LOCATION_MIN_TIME = 4000;
private boolean requestingLocationUpdates;
//NEW
private int FINE_LOCATION_REQUEST_CODE = 10001;
private float Geofence_Radius = 4000;
private Object CircleOptions;
//NEW SMS
private LocationListener locationListener;
private final long mTime = 1000;
private final long mDist = 5;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
binding = ActivityMapBinding.inflate(getLayoutInflater());
setContentView(binding.getRoot());
if (!isConnectedToNetwork()) {
Toast.makeText(this, "Turn on mobile data or Wifi", Toast.LENGTH_LONG).show();
finish();
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
checkLocationPermission();
}
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
mapView = mapFragment.getView();
mapFragment.getMapAsync(this);
}
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case REQUEST_LOCATION_CODE:
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
if (client == null) {
buildGoogleApiClient();
}
mMap.setMyLocationEnabled(true);
}
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
mMap.setMyLocationEnabled(true);
Intent intent = getIntent();
finish();
startActivity(intent);
}
} else {
Toast.makeText(this, "Location Permission Denied", Toast.LENGTH_LONG).show();
}
}
}
#Override
public void onMapReady(#NonNull GoogleMap googleMap) {
mMap = googleMap;
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
buildGoogleApiClient();
mMap.setMyLocationEnabled(true);
// View locationButton = ((View) mapView.findViewById(Integer.parseInt("1")).getParent()).findViewById(Integer.parseInt("2"));
//locationButton.callOnClick();
}
//NEW INPUT (SMS)
LatLng msgloc = new LatLng(lastlocation.getLatitude(), lastlocation.getLongitude());
locationListener = new LocationListener()
{
#Override
public void onLocationChanged(#NonNull Location location)
{
try
{
String phoneNum = "09553625915";
String loc = String.valueOf(msgloc);
String message = "Location = " + msgloc;
SmsManager smsManager = SmsManager.getDefault();
smsManager.sendTextMessage(phoneNum, null, message, null, null);
}
catch (Exception e)
{
e.printStackTrace();
}
}
public void onProviderEnabled(#NonNull String provider)
{
}
public void onProviderDisabled(#NonNull String provider)
{
}
public void onStatusChanged(String provider, int status, Bundle extras)
{
}
};
locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
try
{
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, mTime, mDist,
(android.location.LocationListener) locationListener);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, mTime, mDist,
(android.location.LocationListener) locationListener);
}
catch (SecurityException e)
{
e.printStackTrace();
}
//END NEW INPUT (SMS)
}
private void buildGoogleApiClient() {
client = new GoogleApiClient.Builder(this).addConnectionCallbacks(this).addOnConnectionFailedListener(this).addApi(LocationServices.API).build();
client.connect();
}
#Override
public void onLocationChanged(#NonNull Location location)
{
latitude = location.getLatitude();
longitude = location.getLongitude();
lastlocation = location;
if (currentLocationmMarker != null)
{
currentLocationmMarker.remove();
}
Log.d("lat = ", "" + latitude);
Log.d("lng = ", "" + longitude);
LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.position(latLng);
markerOptions.title("Current Location");
AddCircle(latLng, Geofence_Radius);
//markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED));
//currentLocationmMarker = mMap.addMarker(markerOptions);
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;
}
mMap.setMyLocationEnabled(true);
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(latLng, 12));
//mMap.animateCamera(CameraUpdateFactory.zoomBy(2));
//todo delete following lines
Object[] dataTransfer = new Object[2];
getNearbyPlacesData getNearbyPlacesData = new getNearbyPlacesData();
String url = getUrl(latitude, longitude, "hospital");
dataTransfer[0] = mMap;
dataTransfer[1] = url;
getNearbyPlacesData.execute(dataTransfer);
Toast.makeText(MapActivity.this, "Showing Nearby Hospitals", Toast.LENGTH_SHORT).show();
//todo end
if (client != null) {
LocationServices.FusedLocationApi.removeLocationUpdates(client, this);
}
}
private String getUrl(double latitude, double longitude, String nearbyPlace)
{
StringBuilder googlePlaceUrl = new StringBuilder("https://maps.googleapis.com/maps/api/place/nearbysearch/json?");
googlePlaceUrl.append("location=" + latitude + "," + longitude);
googlePlaceUrl.append("&radius=" + PROXIMITY_RADIUS);
googlePlaceUrl.append("&type=" + nearbyPlace);
googlePlaceUrl.append("&sensor=true");
//Todo: add your google api key here
googlePlaceUrl.append("&key=" + "YOUR_API_KEY");
Log.d("MapsActivity", "url = " + googlePlaceUrl.toString());
return googlePlaceUrl.toString();
}
#Override
public void onConnected(#Nullable Bundle bundle) {
locationRequest = new LocationRequest();
locationRequest.setInterval(5);
locationRequest.setFastestInterval(500);
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
// ORG
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
LocationServices.FusedLocationApi.requestLocationUpdates(client, locationRequest, this);
}
}
private boolean checkLocationPermission()
{
if(ContextCompat.checkSelfPermission(this,Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED )
{
if (ActivityCompat.shouldShowRequestPermissionRationale(this,Manifest.permission.ACCESS_FINE_LOCATION))
{
ActivityCompat.requestPermissions(this,new String[] {Manifest.permission.ACCESS_FINE_LOCATION },REQUEST_LOCATION_CODE);
}
else
{
ActivityCompat.requestPermissions(this,new String[] {Manifest.permission.ACCESS_FINE_LOCATION },REQUEST_LOCATION_CODE);
}
return false;
}
else
{
return true;
}
}
#Override
public void onConnectionSuspended(int i) {
}
#Override
public void onConnectionFailed(#NonNull ConnectionResult connectionResult) {
}
private boolean isConnectedToNetwork() {
ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
return connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).getState() == NetworkInfo.State.CONNECTED ||
connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState() == NetworkInfo.State.CONNECTED;
}
// Add Circle
private void AddCircle(LatLng latLng, float radius)
{
mMap.addCircle(new CircleOptions()
.center(latLng)
.radius(Geofence_Radius)
.strokeColor(Color.argb(50, 0, 0, 0))
.fillColor(Color.argb(13,0,0,0))
.strokeWidth(4));
}
What I want to see if its possible to send the user's current location to another phone after I hit the button that will also show their current location in the map.
I am willing to provide the source code if you kind sirs and ma'ams want to check my code.
Thank you

use multiple location geofencing

I used this code
(https://www.youtube.com/watch?v=nmAtMqljH9M&list=PLdHg5T0SNpN3GBUmpGqjiKGMcBaRT2A-m&index=9&ab_channel=yoursTRULY)
(https://github.com/trulymittal/Geofencing)
That code makes geofence by click and uses just one geofencing.
But I wanna make geofence one more fixed markers when it start, and use one more geofencing.
So I revised this code(MapsActivity.java) by
package com.example.geofencing;
import androidx.annotation.NonNull;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;
import androidx.fragment.app.FragmentActivity;
import android.Manifest;
import android.app.PendingIntent;
import android.content.pm.PackageManager;
import android.graphics.Color;
import android.os.Build;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;
import com.google.android.gms.location.Geofence;
import com.google.android.gms.location.GeofencingClient;
import com.google.android.gms.location.GeofencingRequest;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.CircleOptions;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.OnSuccessListener;
import java.util.ArrayList;
import java.util.List;
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {
private static final String TAG = "MapsActivity";
private GoogleMap mMap;
private GeofencingClient geofencingClient;
private GeofenceHelper geofenceHelper;
private float GEOFENCE_RADIUS = 20;
private String GEOFENCE_ID = "SOME_GEOFENCE_ID";
private int FINE_LOCATION_ACCESS_REQUEST_CODE = 10001;
private int BACKGROUND_LOCATION_ACCESS_REQUEST_CODE = 10002;
private List<LatLng> latLng;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
geofencingClient = LocationServices.getGeofencingClient(this);
geofenceHelper = new GeofenceHelper(this);
}
/**
* Manipulates the map once available.
* This callback is triggered when the map is ready to be used.
* This is where we can add markers or lines, add listeners or move the camera. In this case,
* we just add a marker near Sydney, Australia.
* If Google Play services is not installed on the device, the user will be prompted to install
* it inside the SupportMapFragment. This method will only be triggered once the user has
* installed Google Play services and returned to the app.
*/
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
//move the camera to the starting point
LatLng latLng_start = new LatLng(37.462749, 126.910311);
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(latLng_start, 16));
latLng = new ArrayList<>();
latLng.add(new LatLng(38.462349, 123.909955));
latLng.add(new LatLng(38.463194, 123.911317));
latLng.add(new LatLng(38.462720, 123.910768));
latLng.add(new LatLng(38.462743, 123.910317));
for (LatLng i : latLng) {
addMarker(i);
addCircle(i, GEOFENCE_RADIUS);
addGeofence(i, GEOFENCE_RADIUS);
}
// for (int i = 0; i < markerLocation.length; i++) {
// LatLng latLng = new LatLng(markerLocation[i][0], markerLocation[i][1]);
// addMarker(latLng);
// addCircle(latLng, GEOFENCE_RADIUS);
// addGeofence(latLng, GEOFENCE_RADIUS);
// }
enableUserLocation();
}
private void enableUserLocation() {
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
mMap.setMyLocationEnabled(true);
} else {
//Ask for permission
if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.ACCESS_FINE_LOCATION)) {
//We need to show user a dialog for displaying why the permission is needed and then ask for the permission...
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, FINE_LOCATION_ACCESS_REQUEST_CODE);
} else {
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, FINE_LOCATION_ACCESS_REQUEST_CODE);
}
}
}
private void addMarker(LatLng latLng) {
MarkerOptions markerOptions = new MarkerOptions().position(latLng);
mMap.addMarker(markerOptions);
}
private void addCircle(LatLng latLng, float radius) {
CircleOptions circleOptions = new CircleOptions();
circleOptions.center(latLng);
circleOptions.radius(radius);
circleOptions.strokeColor(Color.argb(255, 255, 0, 0));
circleOptions.fillColor(Color.argb(64, 255, 0, 0));
circleOptions.strokeWidth(4);
mMap.addCircle(circleOptions);
}
private void addGeofence(LatLng latLng, float radius) {
Geofence geofence = geofenceHelper.getGeofence(GEOFENCE_ID, latLng, radius, Geofence.GEOFENCE_TRANSITION_ENTER | Geofence.GEOFENCE_TRANSITION_DWELL | Geofence.GEOFENCE_TRANSITION_EXIT);
GeofencingRequest geofencingRequest = geofenceHelper.getGeofencingRequest(geofence);
PendingIntent pendingIntent = geofenceHelper.getPendingIntent();
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_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;
}
geofencingClient.addGeofences(geofencingRequest, pendingIntent)
.addOnSuccessListener(new OnSuccessListener<Void>() {
#Override
public void onSuccess(Void aVoid) {
Log.d(TAG, "onSuccess: Geofence Added...");
}
})
.addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e) {
String errorMessage = geofenceHelper.getErrorString(e);
Log.d(TAG, "onFailure: " + errorMessage);
}
});
}
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
if (requestCode == FINE_LOCATION_ACCESS_REQUEST_CODE) {
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
//We have the permission
mMap.setMyLocationEnabled(true);
} else {
//We do not have the permission..
}
}
if (requestCode == BACKGROUND_LOCATION_ACCESS_REQUEST_CODE) {
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
//We have the permission
Toast.makeText(this, "You can add geofences...", Toast.LENGTH_SHORT).show();
} else {
//We do not have the permission..
Toast.makeText(this, "Background location access is neccessary for geofences to trigger...", Toast.LENGTH_SHORT).show();
}
}
}
}
As a result, when start the app, four markers and Circles(I added fout latLng) are added on the map!
But only the last latLng works geofence function
(LatLng(38.462743, 123.910317), such as alarm when enter the place),
the others doesn't work geofence function.
I want to make the others location works geofencing function well lol
Plz. help me :(
I need a hint

You're creating a new Geofencing Request for each LatLng coordinate. Instead, you should create a single Geofencing Request containing a list of all Geofences you want to monitor:
Create a function to build your Geofencing Request:
private GeofencingRequest getGeofencingRequest() {
ArrayList<Geofence> geofenceList = new ArrayList<>();
// Iterate through your LatLng(s) to build the Geofence list
for(LatLng coordinate: latLngList){
// Set up each Geofence with your corresponding values
geofenceList.add(new Geofence.Builder()
.setRequestId("My Geofence ID") // A string to identify this geofence
.setCircularRegion(coordinate.latitude, coordinate.longitude, Constants.GEOFENCE_LARGE_RADIUS_IN_METERS)
.setExpirationDuration(Constants.GEOFENCE_EXPIRATION_IN_MILLISECONDS)
.setTransitionTypes(Geofence.GEOFENCE_TRANSITION_ENTER)
.build()
);
}
GeofencingRequest.Builder builder = new GeofencingRequest.Builder();
// The INITIAL_TRIGGER_ENTER flag indicates that geofencing service should trigger a
// GEOFENCE_TRANSITION_ENTER notification when the geofence is added and if the device
// is already inside that geofence.
builder.setInitialTrigger(GeofencingRequest.INITIAL_TRIGGER_ENTER);
// Add the geofences to be monitored by geofencing service using the list we created.
builder.addGeofences(geofenceList);
return builder.build();
}
You should change addGeofence() to look something like this:
private void addGeofences() {
PendingIntent pendingIntent = geofenceHelper.getPendingIntent();
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_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;
}
// Pass the request built with the getGeofencingRequest() function to the Geofencing Client
geofencingClient.addGeofences(getGeofencingRequest(), pendingIntent)
.addOnSuccessListener(new OnSuccessListener<Void>() {
#Override
public void onSuccess(Void aVoid) {
Log.d(TAG, "onSuccess: Geofence Added...");
}
})
.addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e) {
String errorMessage = geofenceHelper.getErrorString(e);
Log.d(TAG, "onFailure: " + errorMessage);
}
});
}
Finally, inside of your onMapReady():
latLngList = new ArrayList<>();
latLngList.add(new LatLng(38.462349, 123.909955));
latLngList.add(new LatLng(38.463194, 123.911317));
latLngList.add(new LatLng(38.462720, 123.910768));
latLngList.add(new LatLng(38.462743, 123.910317));
addGeofences(); // Add all of your geofences to the client

Unable to get the markers and location working in android studio google maps

I'm pretty new to android development and I'm unable to get the current location of gps and display the array of markers on the maps.
Also i'm trying to draw a path with distance and time calculation by following this tutorial in this link: https://javapapers.com/android/draw-path-on-google-maps-android-api/
and how would I send the values of the gps coordinates, distance and duration with a unique id to a firebase realtime database
Where am I going wrong?
import androidx.fragment.app.FragmentActivity;
import android.annotation.SuppressLint;
import android.os.Bundle;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
import java.lang.reflect.Array;
import java.util.ArrayList;
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {
private GoogleMap mMap;
private Location currentLocation;
private FusedLocationProviderClient fusedLocationProviderClient;
private static final int LOCATION_REQUEST_CODE =101;
ArrayList<LatLng>arrayList=new ArrayList<LatLng>();
LatLng route1 = new LatLng(-35.016, 143.321);
LatLng route2 = new LatLng(-34.747, 145.592);
LatLng route3 = new LatLng(-34.364, 147.891);
LatLng route4 = new LatLng(-33.501, 150.217);
LatLng route5 = new LatLng(-32.306, 149.248);
LatLng route6 = new LatLng(-32.491, 147.309);
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
arrayList.add(route1);
arrayList.add(route2);
arrayList.add(route3);
arrayList.add(route4);
arrayList.add(route5);
arrayList.add(route6);
fusedLocationProviderClient = LocationServices.getFusedLocationProviderClient(this);
if (ActivityCompat.checkSelfPermission(MapsActivity.this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(MapsActivity.this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this, new String[] {android.Manifest.permission.ACCESS_FINE_LOCATION}, LOCATION_REQUEST_CODE);
return;
}
fetchLastLocation();
}
private void fetchLastLocation(){
Task<Location> task = fusedLocationProviderClient.getLastLocation();
task.addOnSuccessListener(new OnSuccessListener<Location>() {
#Override
public void onSuccess(Location location) {
if (location != null) {
currentLocation = location;
Toast.makeText(MapsActivity.this,currentLocation.getLatitude()+" "+currentLocation.getLongitude(),Toast.LENGTH_SHORT).show();
SupportMapFragment supportMapFragment= (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
supportMapFragment.getMapAsync(MapsActivity.this);
}else{
Toast.makeText(MapsActivity.this,"No Location recorded",Toast.LENGTH_SHORT).show();
}
}
});
}
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
for (int i = 0; i < arrayList.size(); i++) {
mMap.addMarker(new MarkerOptions().position(arrayList.get(i)).title("Marker"));
LatLng latLng = new LatLng(currentLocation.getLatitude(), currentLocation.getLongitude());
//MarkerOptions are used to create a new Marker.You can specify location, title etc with MarkerOptions
MarkerOptions markerOptions = new MarkerOptions().position(latLng).title("You are Here");
googleMap.animateCamera(CameraUpdateFactory.newLatLng(latLng));
//Adding the created the marker on the map
googleMap.addMarker(markerOptions);
}
#SuppressLint("NeedOnRequestPermissionsResult")
#Override
public void onRequestPermissionsResult ( int requestCode, String[] permissions,int[] grantResult){
switch (requestCode) {
case LOCATION_REQUEST_CODE:
if (grantResult.length > 0 && grantResult[0] == PackageManager.PERMISSION_GRANTED) {
fetchLastLocation();
} else {
Toast.makeText(MapsActivity.this, "Location permission missing", Toast.LENGTH_SHORT).show();
}
break;
}
}
}
}

You have defined twice SupportMapFragment please check my code is working fine I have run code and solved the error
import android.content.pm.PackageManager;
import android.location.Location;
import android.os.Bundle;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.core.app.ActivityCompat;
import androidx.fragment.app.FragmentActivity;
import com.google.android.gms.location.FusedLocationProviderClient;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.android.gms.tasks.Task;
import java.util.ArrayList;
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {
private GoogleMap mMap;
private Location currentLocation;
private FusedLocationProviderClient fusedLocationProviderClient;
private static final int LOCATION_REQUEST_CODE = 101;
ArrayList arrayList = new ArrayList();
LatLng route1 = new LatLng(-35.016, 143.321);
LatLng route2 = new LatLng(-34.747, 145.592);
LatLng route3 = new LatLng(-34.364, 147.891);
LatLng route4 = new LatLng(-33.501, 150.217);
LatLng route5 = new LatLng(-32.306, 149.248);
LatLng route6 = new LatLng(-32.491, 147.309);
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
arrayList.add(route1);
arrayList.add(route2);
arrayList.add(route3);
arrayList.add(route4);
arrayList.add(route5);
arrayList.add(route6);
fusedLocationProviderClient = LocationServices.getFusedLocationProviderClient(this);
if (ActivityCompat.checkSelfPermission(MapsActivity.this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(MapsActivity.this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this, new String[]{android.Manifest.permission.ACCESS_FINE_LOCATION}, LOCATION_REQUEST_CODE);
return;
}
fetchLastLocation();
}
private void fetchLastLocation() {
Task<Location> task = fusedLocationProviderClient.getLastLocation();
task.addOnSuccessListener(new OnSuccessListener<Location>() {
#Override
public void onSuccess(Location location) {
if (location != null) {
currentLocation = location;
Toast.makeText(MapsActivity.this, currentLocation.getLatitude() + " " + currentLocation.getLongitude(), Toast.LENGTH_SHORT).show();
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(MapsActivity.this);
} else {
Toast.makeText(MapsActivity.this, "No Location recorded", Toast.LENGTH_SHORT).show();
}
}
});
}
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
mMap.setOnMapLoadedCallback(new GoogleMap.OnMapLoadedCallback() {
#Override
public void onMapLoaded() {
for (int i = 0; i < arrayList.size(); i++) {
mMap.addMarker(new MarkerOptions().position((LatLng) arrayList.get(i)).title("Marker"));
LatLng latLng = new LatLng(currentLocation.getLatitude(), currentLocation.getLongitude());
//MarkerOptions are used to create a new Marker.You can specify location, title etc with MarkerOptions
MarkerOptions markerOptions = new MarkerOptions().position(latLng).title("You are Here");
googleMap.animateCamera(CameraUpdateFactory.newLatLngZoom(latLng,16));
//Adding the created the marker on the map
googleMap.addMarker(markerOptions);
}
}
});
}
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResult) {
switch (requestCode) {
case LOCATION_REQUEST_CODE:
if (grantResult.length > 0 && grantResult[0] == PackageManager.PERMISSION_GRANTED) {
fetchLastLocation();
} else {
Toast.makeText(MapsActivity.this, "Location permission missing", Toast.LENGTH_SHORT).show();
}
break;
}
}
}

How to calculate nearest restaurant, but my code is showing all nearby restaurants

My code is searching for nearby restaurants and working well by showing all nearest restaurants on Map,
But i want to get very near restaurant, i want to show only 1 restaurant in TextView, i don't know how i can calculate shortest path for that. Please help, Thanks:)
import android.Manifest;
import android.content.pm.PackageManager;
import android.location.Location;
import android.os.Build;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import android.support.v4.content.ContextCompat;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GoogleApiAvailability;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
import java.util.HashMap;
import java.util.List;
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback,
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener,
LocationListener {
private GoogleMap mMap;
double latitude;
double longitude;
private int PROXIMITY_RADIUS = 10000;
GoogleApiClient mGoogleApiClient;
Location mLastLocation;
Marker mCurrLocationMarker;
LocationRequest mLocationRequest;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
checkLocationPermission();
}
//Check if Google Play Services Available or not
if (!CheckGooglePlayServices()) {
Log.d("onCreate", "Finishing test case since Google Play Services are not available");
finish();
}
else {
Log.d("onCreate","Google Play Services available.");
}
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
}
private boolean CheckGooglePlayServices() {
GoogleApiAvailability googleAPI = GoogleApiAvailability.getInstance();
int result = googleAPI.isGooglePlayServicesAvailable(this);
if(result != ConnectionResult.SUCCESS) {
if(googleAPI.isUserResolvableError(result)) {
googleAPI.getErrorDialog(this, result,
0).show();
}
return false;
}
return true;
}
/**
* Manipulates the map once available.
* This callback is triggered when the map is ready to be used.
* This is where we can add markers or lines, add listeners or move the camera. In this case,
* we just add a marker near Sydney, Australia.
* If Google Play services is not installed on the device, the user will be prompted to install
* it inside the SupportMapFragment. This method will only be triggered once the user has
* installed Google Play services and returned to the app.
*/
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
mMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
//Initialize Google Play Services
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
buildGoogleApiClient();
mMap.setMyLocationEnabled(true);
}
}
else {
buildGoogleApiClient();
mMap.setMyLocationEnabled(true);
}
Button btnRestaurant = (Button) findViewById(R.id.btnRestaurant);
btnRestaurant.setOnClickListener(new View.OnClickListener() {
String Restaurant = "restaurant";
#Override
public void onClick(View v) {
Log.d("onClick", "Button is Clicked");
mMap.clear();
String url = getUrl(latitude, longitude, Restaurant);
Object[] DataTransfer = new Object[2];
DataTransfer[0] = mMap;
DataTransfer[1] = url;
Log.d("onClick", url);
GetNearbyPlacesData getNearbyPlacesData = new GetNearbyPlacesData();
getNearbyPlacesData.execute(DataTransfer);
Toast.makeText(MapsActivity.this,"Nearby Restaurants", Toast.LENGTH_LONG).show();
}
});
}
protected synchronized void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
mGoogleApiClient.connect();
}
#Override
public void onConnected(Bundle bundle) {
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(1000);
mLocationRequest.setFastestInterval(1000);
mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
}
private String getUrl(double latitude, double longitude, String nearbyPlace) {
StringBuilder googlePlacesUrl = new StringBuilder("https://maps.googleapis.com/maps/api/place/nearbysearch/json?");
googlePlacesUrl.append("location=" + latitude + "," + longitude);
googlePlacesUrl.append("&radius=" + PROXIMITY_RADIUS);
googlePlacesUrl.append("&type=" + nearbyPlace);
googlePlacesUrl.append("&sensor=true");
googlePlacesUrl.append("&key=" + "AIzaSyATuUiZUkEc_UgHuqsBJa1oqaODI-3mLs0");
Log.d("getUrl", googlePlacesUrl.toString());
return (googlePlacesUrl.toString());
}
#Override
public void onConnectionSuspended(int i) {
}
#Override
public void onLocationChanged(Location location) {
Log.d("onLocationChanged", "entered");
mLastLocation = location;
if (mCurrLocationMarker != null) {
mCurrLocationMarker.remove();
}
//Place current location marker
latitude = location.getLatitude();
longitude = location.getLongitude();
LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.position(latLng);
markerOptions.title("Current Position");
markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_MAGENTA));
mCurrLocationMarker = mMap.addMarker(markerOptions);
//move map camera
mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
mMap.animateCamera(CameraUpdateFactory.zoomTo(11));
Toast.makeText(MapsActivity.this,"Your Current Location", Toast.LENGTH_LONG).show();
Log.d("onLocationChanged", String.format("latitude:%.3f longitude:%.3f",latitude,longitude));
//stop location updates
if (mGoogleApiClient != null) {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
Log.d("onLocationChanged", "Removing Location Updates");
}
Log.d("onLocationChanged", "Exit");
}
#Override
public void onConnectionFailed(ConnectionResult connectionResult) {
}
public static final int MY_PERMISSIONS_REQUEST_LOCATION = 99;
public boolean checkLocationPermission(){
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
// Asking user if explanation is needed
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.
//Prompt the user once explanation has been shown
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
MY_PERMISSIONS_REQUEST_LOCATION);
} 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. Do the
// contacts-related task you need to do.
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
if (mGoogleApiClient == null) {
buildGoogleApiClient();
}
mMap.setMyLocationEnabled(true);
}
} else {
// Permission denied, Disable the functionality that depends on this permission.
Toast.makeText(this, "permission denied", Toast.LENGTH_LONG).show();
}
return;
}
// other 'case' lines to check for other permissions this app might request.
// You can add here other case statements according to your requirement.
}
}
}

Pseudocode for finding the item that is closest:
closest = none;
for each item in items
{
if(!closest || item.distance > closest.distance)
{
closest = item
}
}
print "Closest Item is: " closest

you can use the latest google api
http://developer.android.com/google/play-services/maps.html
You can take a look at following link to draw path
Drawing a line/path on Google Maps
How to Draw Route in Google Maps API V2 from my location
Android: How to draw route directions google maps API V2 from current location to destination

Android Google Map How to marker Position from ArrayList

I am using google maps on my app. I have an ArrayList where has lat, long and other information. I want to make click on a marker and go to other Activity with specific marker info to show details.
I have used this code but always get the last position of ArrayList. How to get each position's information?
package com.teledaktar.activities.mapsAndLocation;
import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Color;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.location.Location;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import android.widget.Toast;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.CameraPosition;
import com.google.android.gms.maps.model.Circle;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
import com.google.android.gms.maps.model.Polyline;
import com.google.android.gms.maps.model.PolylineOptions;
import com.teledaktar.R;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.Marker;
import com.teledaktar.activities.blogActivities.BlogActivity;
import com.teledaktar.activities.root.MainActivity;
import com.teledaktar.api.AppClient;
import com.teledaktar.api.ApplicationConfig;
import com.teledaktar.model.blog.BlogContent;
import com.teledaktar.model.hospital_model.Hospital;
import com.teledaktar.model.nearestHospitalModels.Hospitals;
import com.teledaktar.model.nearestHospitalModels.NearestHospitalContent;
import com.teledaktar.utility.Constants;
import java.util.ArrayList;
import dmax.dialog.SpotsDialog;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
public class DoctorLocationOnMapsActivity extends FragmentActivity implements OnMapReadyCallback,
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener,
LocationListener, SensorEventListener, GoogleMap.OnMarkerClickListener {
private GoogleMap mMap;
GoogleApiClient mGoogleApiClient;
LocationRequest mLocationRequest;
Location mLastLocation;
Marker mCurrLocationMarker;
double currentLatitude, currentLongitude;
float mDeclination;
private SpotsDialog pDialog;
private Marker myMarker;
int clickPosition;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_doctor_location_on_maps);
pDialog = new SpotsDialog(DoctorLocationOnMapsActivity.this, R.style.Custom);
pDialog.setCancelable(true);
checkLocationPermission();
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
}
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
// Add a marker in Sydney and move the camera
//LatLng sydney = new LatLng(-34, 151);
// mMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney"));
// mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));
buildGoogleApiClient();
if (ActivityCompat.checkSelfPermission(DoctorLocationOnMapsActivity.this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
if (ActivityCompat.shouldShowRequestPermissionRationale(DoctorLocationOnMapsActivity.this, Manifest.permission.ACCESS_FINE_LOCATION)) {
mMap.setMyLocationEnabled(true);
}
}
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
buildGoogleApiClient();
// mMap.setMyLocationEnabled(true);
return;
}
// Toast.makeText(this, Double.toString(currentLattitude), Toast.LENGTH_SHORT).show();
//specify latitude and longitude of both source and destination
/*Polyline line = googleMap.addPolyline(new PolylineOptions()
.add(new LatLng(currentLattitude, currentLongitude), new LatLng(24.21,88.84))
.width(10)
.color(Color.MAGENTA));
*/
mMap.setOnMarkerClickListener(this);
}
protected synchronized void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
mGoogleApiClient.connect();
}
#Override
public void onConnected(#Nullable Bundle bundle) {
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(1000);
mLocationRequest.setFastestInterval(1000);
mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
return;
}
String lattitudeString = Constants.latitude;
String longitudeString = Constants.longitude;
if (lattitudeString == null) {
lattitudeString = "23.7277";
}
if (longitudeString == null) {
longitudeString = "90.4106";
}
Double hospitalLat = Double.parseDouble(lattitudeString);
Double hospitalLong = Double.parseDouble(longitudeString);
/*
LatLng bagha = new LatLng(hospitalLat,hospitalLong);
mMap.addMarker(new MarkerOptions().position(bagha).title("Marker in Hospital"));*/
/**
* find current location . latitude and longitude
*/
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(
mGoogleApiClient);
if (mLastLocation == null) {
Toast.makeText(this, "Please Enable GPS and give location permission to get dirrection ", Toast.LENGTH_SHORT).show();
} else {
currentLatitude = mLastLocation.getLatitude();
currentLongitude = mLastLocation.getLongitude();
getNearestHospitalApiData(currentLatitude, currentLongitude);
/* Polyline line = mMap.addPolyline(new PolylineOptions()
.add(new LatLng(currentLatitude, currentLongitude), new LatLng(hospitalLat, hospitalLong))
.width(10)
.color(Color.GREEN));
*/
}
}
#Override
public void onConnectionSuspended(int i) {
}
#Override
public void onConnectionFailed(#NonNull ConnectionResult connectionResult) {
}
#Override
public void onLocationChanged(Location location) {
mLastLocation = location;
if (mCurrLocationMarker != null) {
mCurrLocationMarker.remove();
}
//Place current location marker
LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.position(latLng);
markerOptions.title("Current Position");
markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_BLUE));
mCurrLocationMarker = mMap.addMarker(markerOptions);
//move map camera
mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
mMap.animateCamera(CameraUpdateFactory.zoomTo(12));
//stop location updates
if (mGoogleApiClient != null) {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
}
}
public static final int MY_PERMISSIONS_REQUEST_LOCATION = 99;
public boolean checkLocationPermission() {
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
}
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) {
if (mGoogleApiClient == null) {
buildGoogleApiClient();
}
mMap.setMyLocationEnabled(true);
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
if (mGoogleApiClient == null) {
buildGoogleApiClient();
}
mMap.setMyLocationEnabled(true);
return;
}
} else {
Toast.makeText(this, "permission denied", Toast.LENGTH_LONG).show();
}
return;
}
}
}
/*
for changing auto rotation
*/
#Override
public void onSensorChanged(SensorEvent event) {
if (event.sensor.getType() == Sensor.TYPE_ROTATION_VECTOR) {
float[] rotMat = new float[9];
float[] rotMat1 = new float[9];
SensorManager.getRotationMatrixFromVector(
rotMat, event.values);
float[] orientation = new float[3];
SensorManager.getOrientation(rotMat, orientation);
float bearing = (float) (Math.toDegrees(orientation[0]) + mDeclination);
updateCamera(bearing);
}
}
#Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
private void updateCamera(float bearing) {
CameraPosition oldPos = mMap.getCameraPosition();
CameraPosition pos = CameraPosition.builder(oldPos).bearing(bearing).build();
mMap.moveCamera(CameraUpdateFactory.newCameraPosition(pos));
}
public void getNearestHospitalApiData(Double latitude, Double longitude) {
/**
* HERE API CALL WILL BE ADDED
*/
show();
String lats = Double.toString(latitude);
String longs = Double.toString(longitude);
final ApplicationConfig apiServiceReader = AppClient.getApiService();
Call<NearestHospitalContent> list = apiServiceReader.getNearestHospitals(lats, longs);
list.enqueue(new Callback<NearestHospitalContent>() {
#Override
public void onResponse(Call<NearestHospitalContent> call, Response<NearestHospitalContent> response) {
if (response.isSuccessful()) {
hide();
if (response.body().getStatus_code().equals("200")){
ArrayList<Hospitals> nearestHospitals = response.body().getHospitals();
if (nearestHospitals.size() > 0) {
for (int i = 0; i < nearestHospitals.size(); i++) {
Double latitudes = Double.parseDouble(nearestHospitals.get(i).getLatitude().substring(0, 5));
Double longitudes = Double.parseDouble(nearestHospitals.get(i).getLongitude().substring(0, 5));
LatLng hospitalMarker = new LatLng(latitudes, longitudes);
myMarker = mMap.addMarker(new MarkerOptions()
.position(hospitalMarker)
.title(nearestHospitals.get(i).getName())
.snippet(nearestHospitals.get(i).getDescription())
.alpha(0.8f)
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_AZURE)));
// mMap.addMarker(new MarkerOptions().position(hospitalMarker).title(nearestHospitals.get(i).getName()).alpha(0.8f));
myMarker.showInfoWindow();
Constants.NEAREST_HOSPITAL_NAME = nearestHospitals.get(i).getName();
clickPosition =i;
System.out.println("clicked"+i);
}
}else {
Toast.makeText(DoctorLocationOnMapsActivity.this, "Currently No Nearest Hospital found at this position ", Toast.LENGTH_SHORT).show();
}
}
} else {
hide();
Toast.makeText(DoctorLocationOnMapsActivity.this, "not success", Toast.LENGTH_SHORT).show();
}
}
#Override
public void onFailure(Call<NearestHospitalContent> call, Throwable t) {
hide();
Toast.makeText(DoctorLocationOnMapsActivity.this, "Failed", Toast.LENGTH_SHORT).show();
}
});
}
#Override
public boolean onMarkerClick(final Marker marker) {
Toast.makeText(DoctorLocationOnMapsActivity.this,Integer.toString(clickPosition), Toast.LENGTH_SHORT).show();
Intent intent = new Intent(DoctorLocationOnMapsActivity.this,MainActivity.class);
startActivity(intent);
}
/* Integer clickCount = (Integer) marker.getTag();
if (clickCount != null) {
clickCount = clickCount + 1;
marker.setTag(clickCount);
Toast.makeText(this,
marker.getTitle() +
" has been clicked " + clickCount + " times.",
Toast.LENGTH_SHORT).show();
}*/
return false;
}
private void show() {
pDialog.show();
pDialog.setMessage(getString(R.string.waiting_data_string));
}
private void hide() {
pDialog.dismiss();
}
}

Develop Reference

Java is a programming language and computing platform first released by Sun Microsystems in 1995.

Draggable marker for android studio - java

In your onMapLongClick method you are saying mMap.addMarker(...). So of coarse you are adding new markers. Try creating a marker object at the top of your class. And then in your onMapLongClick method, update the location (and make it visible in case you are inclined on hiding it at some point.)

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