Develop Reference

How can i get the location updates for tracking when the other device while traveling?

My project is for tracking the driver from the customer device just like Uber. What i have done is I'm fetching the location data sent by the driver to the server with the help of volley library and posting it in the google maps in the user end.
I did implement the handler to periodically fetch the location updates sent by the driver. But my app was crashing giving Unexpected response code 507 and Unexpected response code 508.
I just need some help as how i can acheive this or some reference would be helpful.
Below is my code.
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback{
private final Handler handler = new Handler();
public static final int MY_PERMISSIONS_REQUEST_LOCATION = 99;
private GoogleMap mMap;
String newLatitude = "";
String newLongitude = "";
Marker marker;
Runnable runnable;
String schoolid, studentid;
String LocationUrl = Constant.BASE_URL+"selectlocation/";
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_map);
Bundle bundle = getIntent().getExtras();
schoolid = bundle.getString("ap_school_fkid");
studentid = bundle.getString("student_fkid");
SupportMapFragment mapFragment = (SupportMapFragment)getSupportFragmentManager().findFragmentById(R.id.maps);
if (mapFragment != null) {
mapFragment.getMapAsync(this);
}
}
#Override
public void onMapReady(final GoogleMap googleMap) {
Log.d("MapsActivity", "Inside onMapReady");
mMap = googleMap;
StringRequest request = new StringRequest(Request.Method.GET, LocationUrl+schoolid+"/"+studentid+"/", new Response.Listener<String>() {
#Override
public void onResponse(String response) {
Log.d("MapsActivity", response);
try {
JSONObject object = new JSONObject(response);
JSONArray array = object.getJSONArray("resp");
for (int i = 0; i < array.length(); i++) {
//JSONObject jsonObject = array.getJSONObject(i);
if (array.getJSONObject(i).getString("loc_latitude") != null && array.getJSONObject(i).getString("loc_longitude") != null) {
newLatitude = array.getJSONObject(i).getString("loc_latitude").trim();
newLongitude = array.getJSONObject(i).getString("loc_longitude").trim();
Toast.makeText(MapsActivity.this, newLatitude + ", " + newLongitude, Toast.LENGTH_SHORT).show();
addmarkerToMap(newLatitude, newLongitude);
}
}
} catch (JSONException e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(), "Error: " + e.getMessage(), Toast.LENGTH_LONG).show();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
});
RequestQueue queue = Volley.newRequestQueue(getApplicationContext());
queue.add(request);
if (!newLatitude.isEmpty() && !newLongitude.isEmpty()) {
Double lat = Double.parseDouble(newLatitude);
Double lng = Double.parseDouble(newLongitude);
LatLng latLng = new LatLng(lat, lng);
mMap.addMarker(new MarkerOptions().position(latLng).title("I'm Here"));
mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
CameraUpdate location = CameraUpdateFactory.newLatLngZoom(latLng, 17);
mMap.animateCamera(location);
}
}
private void addmarkerToMap(String newLat, String newLng) {
double lat = Double.parseDouble(newLat);
double lng = Double.parseDouble(newLng);
LatLng latLng = new LatLng(lat, lng);
MarkerOptions markerOptions = new MarkerOptions().position(new LatLng(lat, lng)).title("I'm Here");
markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED));
mMap.addMarker(markerOptions);
mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
CameraUpdate location = CameraUpdateFactory.newLatLngZoom(latLng, 17);
mMap.animateCamera(location);
new Handler().postDelayed(() -> {
getLocation();
}, 3000);
}
private void getLocation(){
Log.d("getLocation", "Refreshed");
mMap.clear();
if (mMap!= null){
if (marker == null){
StringRequest request = new StringRequest(Request.Method.GET, LocationUrl+schoolid+"/"+studentid+"/", new Response.Listener<String>() {
#Override
public void onResponse(String response) {
try {
JSONObject object = new JSONObject(response);
JSONArray array = object.getJSONArray("resp");
for (int i = 0; i < array.length(); i++) {
//JSONObject jsonObject = array.getJSONObject(i);
if (array.getJSONObject(i).getString("loc_latitude") != null && array.getJSONObject(i).getString("loc_longitude") != null) {
newLatitude = array.getJSONObject(i).getString("loc_latitude").trim();
newLongitude = array.getJSONObject(i).getString("loc_longitude").trim();
Toast.makeText(MapsActivity.this, "location is refreshed, new Latitude : "+newLatitude+", new Longitude : "+newLongitude, Toast.LENGTH_SHORT).show();
addmarkerToMap(newLatitude, newLongitude);
}
}
} catch (JSONException e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(), "Error: " + e.getMessage(), Toast.LENGTH_LONG).show();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
});
RequestQueue queue = Volley.newRequestQueue(getApplicationContext());
queue.add(request);
if (!newLatitude.isEmpty() && !newLongitude.isEmpty()) {
Double lat = Double.parseDouble(newLatitude);
Double lng = Double.parseDouble(newLongitude);
LatLng latLng = new LatLng(lat, lng);
mMap.addMarker(new MarkerOptions().position(latLng).title("I'm Here"));
mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
CameraUpdate location = CameraUpdateFactory.newLatLngZoom(latLng, 17);
mMap.animateCamera(location);
}
}
}
}
}

Getting My Location Null pointer in Fragment in GoogleMap API v2

I'm trying to get my location on click of save button & store that in
database.
Problem:
When I'm trying to get my location it shows me null pointer exception.
Can anyone tell me whats wrong in my code?
My code:
public class OthersFragment extends Fragment implements OnMapReadyCallback,GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener {
View view;
private GoogleMap mMap;
GoogleApiClient mGoogleApiClient;
Double latitude;
Double longitude;
String strplace;
public static OthersFragment newInstance() {
OthersFragment fragment = new OthersFragment();
return fragment;
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// mGoogleApiClient = new GoogleApiClient.Builder(getContext())
// .addApi(LocationServices.API)
// .addConnectionCallbacks(this)
// .addOnConnectionFailedListener(this)
// .build();
view = inflater.inflate(R.layout.fragment_other, null, false);
SupportMapFragment mapFragment = (SupportMapFragment) this.getChildFragmentManager().findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
return view;
}
#Override
public void onMapReady(GoogleMap googleMap) {
mGoogleApiClient = new GoogleApiClient.Builder(getContext())
.addApi(LocationServices.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
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));
mMap.setMyLocationEnabled(true);
mMap.setOnMyLocationButtonClickListener(new GoogleMap.OnMyLocationButtonClickListener() {
#Override
public boolean onMyLocationButtonClick() {
Location mylocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
ShowPopUp(mylocation);
return true;
}
});
googleMap.getUiSettings().setZoomControlsEnabled(true);
googleMap.getUiSettings().setAllGesturesEnabled(true);
}
private void ShowPopUp(final Location mylocation) {
int popupWidth = 300;
int popupHeight = 150;
// Inflate the popup_layout.xml
LinearLayout viewGroup = (LinearLayout)view.findViewById(R.id.popup);
LayoutInflater layoutInflater = (LayoutInflater)getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View layout = layoutInflater.inflate(R.layout.popup, viewGroup);
// Creating the PopupWindow
final PopupWindow popup = new PopupWindow();
popup.setContentView(layout);
popup.setWidth(popupWidth);
popup.setHeight(popupHeight);
popup.setFocusable(true);
// Some offset to align the popup a bit to the right, and a bit down, relative to button's position.
int OFFSET_X = 30;
int OFFSET_Y = 30;
// Clear the default translucent background
popup.setBackgroundDrawable(new BitmapDrawable());
// Displaying the popup at the specified location, + offsets.
popup.showAtLocation(layout, Gravity.NO_GRAVITY, + OFFSET_X, OFFSET_Y);
// Getting a reference to Close button, and close the popup when clicked.
Button save = (Button) layout.findViewById(R.id.save);
Button retrieve = (Button) layout.findViewById(R.id.retrieve);
final EditText place = (EditText)layout.findViewById(R.id.place);
final EditText phone = (EditText)layout.findViewById(R.id.phone);
save.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String action = "save";
String strplace = place.getText().toString();
String strphone = phone.getText().toString();
new storePoints().execute(strplace,String.valueOf(mylocation.getLatitude()), String.valueOf(mylocation.getLongitude()), action);
popup.dismiss();
}
});
retrieve.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String action = "retrieve";
strplace = place.getText().toString();
String strphone = phone.getText().toString();
new retrievePoints().execute(strplace, action);
popup.dismiss();
}
});
}
#Override
public void onConnected(Bundle bundle) {
}
#Override
public void onConnectionSuspended(int i) {
}
#Override
public void onConnectionFailed(ConnectionResult connectionResult) {
}
private class storePoints extends AsyncTask<String, Void, String> {
#Override
protected String doInBackground(String... params) {
try {
String place = (String) params[0];
// String phone = (String) params[1];
String latitude = (String) params[1];
String longitude = (String) params[2];
String action = (String) params[3];
String link = "http://192.168.0.152/prestige/saveCoord.php";
// String link = "http://10.0.2.2/coordinates/coord.php";
String data = URLEncoder.encode("station_name", "UTF-8") + "=" + URLEncoder.encode(place, "UTF-8");
// data += "&" + URLEncoder.encode("phone", "UTF-8") + "=" + URLEncoder.encode(phone, "UTF-8");
data += "&" + URLEncoder.encode("latitude", "UTF-8") + "=" + URLEncoder.encode(latitude, "UTF-8");
data += "&" + URLEncoder.encode("longitude", "UTF-8") + "=" + URLEncoder.encode(longitude, "UTF-8");
URL url = new URL(link);
URLConnection conn = url.openConnection();
conn.setDoOutput(true);
OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
wr.write(data);
wr.flush();
BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
StringBuilder sb = new StringBuilder();
String line = null;
// Read Server Response
while ((line = reader.readLine()) != null) {
sb.append(line);
break;
}
return sb.toString();
} catch (Exception e) {
return new String("Exception: " + e.getMessage());
}
}
#Override
protected void onPostExecute(String result) {
Toast.makeText(OthersFragment.this.getContext(), result, Toast.LENGTH_LONG).show();
}
}
private class retrievePoints extends AsyncTask<String, Void, String>{
#Override
protected String doInBackground(String... params) {
try {
String place = (String) params[0];
String phone = (String) params[1];
String link = "http://192.168.0.152/prestige/retCoord.php";
// String link = "http://10.0.2.2/coordinates/retCoord.php";
String data = URLEncoder.encode("station_name", "UTF-8") + "=" + URLEncoder.encode(place, "UTF-8");
data += "&" + URLEncoder.encode("phone", "UTF-8") + "=" + URLEncoder.encode(phone, "UTF-8");
URL url = new URL(link);
URLConnection conn = url.openConnection();
conn.setDoOutput(true);
OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
wr.write(data);
wr.flush();
BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
StringBuilder sb = new StringBuilder();
String line = null;
// Read Server Response
while ((line = reader.readLine()) != null) {
sb.append(line);
break;
}
return sb.toString();
} catch (Exception e) {
return new String("Exception: " + e.getMessage());
}
}
#Override
protected void onPostExecute(String result) {
// Toast.makeText(MainActivity.this,result,Toast.LENGTH_LONG).show();
try {
mMap.clear(); // clear all the markers on the map.
JSONArray loc_arr = new JSONArray(result);
for (int i = 0; i < loc_arr.length(); i++){
JSONObject loc_obj = loc_arr.getJSONObject(i);
Double latitude = Double.valueOf((loc_obj.getString("latitude")));
Double longitude = Double.valueOf((loc_obj.getString("longitude")));
String place = loc_obj.getString("station_name");
// Toast.makeText(MainActivity.this, "latitude: "+latitude +"\t Longitude: " + longitude+"\t Place: "+place, Toast.LENGTH_SHORT).show();
Marker marker= mMap.addMarker(new MarkerOptions().position(new LatLng(latitude, longitude)).title("Place: "+place).snippet("Latitude: " +latitude+",Longitude: "+longitude));
marker.showInfoWindow();
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(latitude,longitude),28));
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}
}
Error Log:
06-20 12:30:42.740 6682-6682/com.example.barbegambino.apslocate E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.example.barbegambino.apslocate, PID: 6682
java.lang.NullPointerException
at com.example.barbegambino.apslocate.fragments.OthersFragment$2.onClick(OthersFragment.java:166)
at android.view.View.performClick(View.java:4463)
at android.view.View$PerformClick.run(View.java:18789)
at android.os.Handler.handleCallback(Handler.java:808)
at android.os.Handler.dispatchMessage(Handler.java:103)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5299)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:829)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:645)
at dalvik.system.NativeStart.main(Native Method)

For example try to get last-known location like below,
public class MapExample extends FragmentActivity implements OnMapReadyCallback,
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener,
LocationListener {
private GoogleMap mMap;
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();
}
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
}
#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);
}
}
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);
}
else{
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
if (mLastLocation != null) {
// work with your last location.
} else {
Toast.makeText(this, R.string.no_location, Toast.LENGTH_LONG).show();
}
}
}
#Override
public void onConnectionSuspended(int i) {
}
#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_MAGENTA));
mCurrLocationMarker = mMap.addMarker(markerOptions);
//move map camera
mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
mMap.animateCamera(CameraUpdateFactory.zoomTo(11));
//stop location updates
if (mGoogleApiClient != null) {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
}
}
#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.
}
}
}

I added this and it worked for me.
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
view = inflater.inflate(R.layout.fragment_entry, null, false);
//added
if (!isGooglePlayServicesAvailable()) {
Toast.makeText(getContext(), "Google Play Services is not available", Toast.LENGTH_LONG).show();
getActivity().finish();
}
mGoogleApiClient = new GoogleApiClient.Builder(getContext())
.addApi(LocationServices.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
SupportMapFragment mapFragment = (SupportMapFragment) this.getChildFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
return view;
}
This also i added
#Override
public void onStart() {
super.onStart();
mGoogleApiClient.connect();
}
#Override
public void onStop() {
super.onStop();
mGoogleApiClient.disconnect();
}
private boolean isGooglePlayServicesAvailable() {
int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(getContext());
if (ConnectionResult.SUCCESS == status) {
return true;
} else {
GooglePlayServicesUtil.getErrorDialog(status, getActivity(), 0).show();
Toast.makeText(getContext(), "Google Play Services is not Available", Toast.LENGTH_LONG).show();
return false;
}
}

Google Maps: New markers are not showing after resuming map activity

I am connecting my app to a sensor, everytime the sensor sends data a marker is placed on a map with data inside info window.
When I am starting the activity the first time. mMap has ID: 21319.
In my onLocationChanged()method I add markers to the map with ID 21319. Then if I press the back button and resume the activity. mMap is created again and has now another ID, let's say ID 22431. With my method addMapPoints() I add the old markers to mMap with ID 22431 with mMap.addMarker(markerOptions) and I can see the markers on the screen. But this time when new data is sent and markers are added inside onLocationChanged() no new markers appear on the screen. When I debug I can see that in onLocationChanged() my mMap has the old ID: 21319 and I do not get any errors. So I guess that the new markers are added to the old map but my screen is showing the new map.
Why is this happening? And how can I solve this problem?
UPDATE I think I have found the problem. At the moment mMap == null when new data is sent. What I now wonder is how can I obtain the map inside OnLocationUpdate() or in OnResume()?
Here is my MapsActivity code
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback, GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener
{
public GoogleMap mMap;
GoogleApiClient mGoogleApiClient;
Location mLastLocation;
Marker mCurrLocationMarker;
private int co_mV;
private int no2_mV;
LocationRequest mLocationRequest;
private boolean initiateApp;
String currentTime;
TcpClient mTcpClient;
ArrayList<Marker> markerArrayList;
static ArrayList<Double> markerLat = new ArrayList<>();
static ArrayList<Double> markerLng = new ArrayList<>();
static ArrayList<String> markerSnippet = new ArrayList<>();
static ArrayList<String> markerTitle = new ArrayList<>();
#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();
}
// 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);
initiateApp = true;
markerArrayList = new ArrayList<>();
}
#Override
protected void onResume() {
super.onResume();
}
#Override
protected void onPause() {
super.onPause();
markerArrayList.clear();
}
/**
* 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);
mMap.setMyLocationEnabled(true);
//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();
}
}
else {
buildGoogleApiClient();
}
if (markerLat != null) {
addMapPoints();
}
}
/* Here we create the infoWindow **/
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) {
getNewLocation();
new ConnectTask().execute("");
}
public void newData(JSONObject d) {
try {
co_mV = d.getInt("co_mV");
no2_mV = d.getInt("no2_mV");
} catch (JSONException e) {
e.printStackTrace();
}
getNewLocation();
}
public void getTime() {
Calendar cal = Calendar.getInstance();
currentTime = new SimpleDateFormat("HH:mm:ss").format(cal.getTime());
}
public void getNewLocation() {
mLocationRequest = new LocationRequest();
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
}
public void addMapPoints() {
markerArrayList = new ArrayList<>();
for (int i = 0; i < markerLat.size(); i++) {
LatLng latLng = new LatLng(markerLat.get(i), markerLng.get(i));
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.position(latLng);
markerOptions.title(markerTitle.get(i));
markerOptions.snippet(markerSnippet.get(i));
markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_MAGENTA));
Marker marker = mMap.addMarker(markerOptions);
markerArrayList.add(marker);
}
}
#Override
public void onConnectionSuspended(int i) {
}
#Override
public void onLocationChanged(Location location) {
if (markerArrayList.size()>1) {
if(location.distanceTo(mLastLocation) < 30) {
markerArrayList.get(markerArrayList.size()-1).remove();
markerArrayList.remove(markerArrayList.size()-1);
markerSnippet.remove(markerSnippet.size()-1);
markerTitle.remove(markerTitle.size()-1);
markerLat.remove(markerTitle.size()-1);
markerLng.remove(markerTitle.size()-1);
Toast.makeText(
getApplicationContext(),
"Reading to close to last reading, replaces last reading", Toast.LENGTH_SHORT).show();
}
}
if (markerArrayList.size() == 8) {
markerArrayList.get(0).remove();
markerArrayList.remove(0);
markerSnippet.remove(0);
markerTitle.remove(0);
markerLat.remove(0);
markerLng.remove(0);
}
//Place current location marker
LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
if (co_mV != 0) {
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.position(latLng);
markerLat.add(location.getLatitude());
markerLng.add(location.getLongitude());
markerOptions.title("Time of reading: " + currentTime);
markerTitle.add("Time of reading: " + currentTime);
markerOptions.snippet("co: " + String.valueOf(co_mV) + " mV, " + "no2: " + String.valueOf(no2_mV) + " mV");
markerSnippet.add("co: " + String.valueOf(co_mV) + " mV, " + "no2: " + String.valueOf(no2_mV) + " mV");
markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_MAGENTA));
mCurrLocationMarker = mMap.addMarker(markerOptions);
markerArrayList.add(mCurrLocationMarker);
}
mLastLocation = location;
Log.d("ADebugTag", "Value: " + Double.toString(location.getLatitude()));
Log.d("ADebugTag", "Value: " + Double.toString(location.getLongitude()));
//move map camera
if(initiateApp){
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(latLng, 15));
}
boolean contains = mMap.getProjection()
.getVisibleRegion()
.latLngBounds
.contains(latLng);
if(!contains){
mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
}
initiateApp = false;
}
#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.
}
}
public JSONObject getNewJSON(JSONObject json) {
try {
int humidity = json.getInt("humidity_ppm");
int pressure = json.getInt("pressure_Pa");
int noise = json.getInt("noise_dB");
double lat = mLastLocation.getLatitude();
double lng = mLastLocation.getLongitude();
long time = System.currentTimeMillis() / 1000L;
JSONObject c = new JSONObject();
c.put("time",time);
c.put("lat",lat);
c.put("long",lng);
c.put("humidity",humidity);
c.put("pressure",pressure);
c.put("noise_dB",noise);
return c;
} catch (JSONException e) {
e.printStackTrace();
}

I solve this problem by exiting the application in onDestroy method .
I think when fragment is reused marker cannot be placed in map
#Override
public void onDestroy() {
getActivity().finish();
System.exit(0);
super.onDestroy();
}

Google map marker title android

i am trying to show all the nearest embassy from my current location. i am able to print all the embassies from my current location but the problem i am facing is that the title is same for all the embassies. for all the embassy is showing same title like in this pictures.
All i want to do is to display in title the name of each embassy. currently only displaying "Embassy of Malta". The below is my code please suggest me where i am wrong. I am new to Android and this is my first project so please apologize in advance if my question is not strong enough. also many thanks in advance below is my code`public class MapsActivity extends AppCompatActivity implements OnMapReadyCallback,
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener,
LocationListener {
GoogleMap mMap;
GoogleApiClient mGoogleApiClient;
Location mLastLocation;
Marker mCurrLocationMarker;
LocationRequest mLocationRequest;
private boolean flag = true;
#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();
}
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(map);
mapFragment.getMapAsync(this);
}
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
mMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
//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);
}
}
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);
}
}
#Override
public void onConnectionSuspended(int i) {
}
#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_MAGENTA));
mCurrLocationMarker = mMap.addMarker(markerOptions);
//move map camera
mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
mMap.animateCamera(CameraUpdateFactory.zoomTo(10));
//stop location updates
if (mGoogleApiClient != null) {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
}
new getEmbassyPoint().execute(new LatLng(location.getLatitude(), location.getLongitude()));
}
#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.
}
}
class getEmbassyPoint extends AsyncTask<LatLng, String, ArrayList<LatLng>> {
double x, y;
String name;
private LatLng myPoint;
#Override
protected ArrayList<LatLng> doInBackground(LatLng... params) {
myPoint = params[0];
String s = "https://maps.googleapis.com/maps/api/place/nearbysearch" + "/json?location=" + myPoint.latitude + "," + myPoint.longitude
+ "&radius=50000&types=embassy&name=ireland" + "&key=my api key";
Log.i("app", s);
try {
URL url = new URL(s);
BufferedReader r = new BufferedReader(new InputStreamReader(((HttpURLConnection) url.openConnection()).getInputStream()));
JsonParser jp = new JsonParser();
JsonElement jsonElement = jp.parse(r);
JsonObject jsonObject = jsonElement.getAsJsonObject();
JsonArray jsonArray = jsonObject.getAsJsonArray("results");
List<LatLng> listt = new ArrayList<>();
for (JsonElement element : jsonArray) {
name = element.getAsJsonObject().get("name").getAsString();
x = Double.valueOf(element.getAsJsonObject().get("geometry").getAsJsonObject().get("location").getAsJsonObject().get("lat").getAsString());
y = Double.valueOf(element.getAsJsonObject().get("geometry").getAsJsonObject().get("location").getAsJsonObject().get("lng").getAsString());
listt.add(new LatLng(x,y));
}
return (ArrayList<LatLng>) listt;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
#Override
protected void onPostExecute(ArrayList<LatLng> latLngs) {
super.onPostExecute(latLngs);
for (LatLng latLng : latLngs){
Log.i("app", "onPostExecute: lat: " + latLng.latitude);
List<Marker> markers = new ArrayList<Marker>();
Marker marker = mMap.addMarker(new MarkerOptions().position(latLng).title(name).icon(BitmapDescriptorFactory.fromResource(R.drawable.mosque)));
markers.add(marker);
MarkerOptions mp = new MarkerOptions();
mp.title(name);
}
}
}
}`

in onPostExecute you are using an ArrayList of LatLng.
Change that to an ArrayList of a custom object.
In the custom object you want the LatLng and the title of the Marker.
Your bug lies here:
name = element.getAsJsonObject().get("name").getAsString();
Your resetting the String name every single time you parse the JSONObject in your loop. You need to be storing this in your object
Something like this should work: This won't compile but the changes are pretty easy, change everything from a ArrayList of LatLng to an arrayList of CustomObject
class getEmbassyPoint extends AsyncTask<LatLng, String, ArrayList<CustomObject>> {
double x, y;
String name;
private LatLng myPoint;
#Override
protected ArrayList<CustomObject> doInBackground(LatLng... params) {
myPoint = params[0];
String s = "https://maps.googleapis.com/maps/api/place/nearbysearch" + "/json?location=" + myPoint.latitude + "," + myPoint.longitude
+ "&radius=50000&types=embassy&name=ireland" + "&key=my api key";
try {
URL url = new URL(s);
BufferedReader r = new BufferedReader(new InputStreamReader(((HttpURLConnection) url.openConnection()).getInputStream()));
JsonParser jp = new JsonParser();
JsonElement jsonElement = jp.parse(r);
JsonObject jsonObject = jsonElement.getAsJsonObject();
JsonArray jsonArray = jsonObject.getAsJsonArray("results");
List<CustomObject> listt = new ArrayList<>();
for (JsonElement element : jsonArray) {
name = element.getAsJsonObject().get("name").getAsString();
x = Double.valueOf(element.getAsJsonObject().get("geometry").getAsJsonObject().get("location").getAsJsonObject().get("lat").getAsString());
y = Double.valueOf(element.getAsJsonObject().get("geometry").getAsJsonObject().get("location").getAsJsonObject().get("lng").getAsString());
CustomObject customObject = new CustomObject;
customObject.title = element.getAsJsonObject().get("name").getAsString();
customObject.latLng = new LatLng(x,y);
listt.add(customObject);
}
return (ArrayList<CustomObject>) listt;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
#Override
protected void onPostExecute(ArrayList<CustomObject> latLngs) {
super.onPostExecute(latLngs);
List<Marker> markers = new ArrayList<Marker>();
for (CustomObject latLng : latLngs){
Marker marker = mMap.addMarker(new MarkerOptions().position(latLng.latLng).title(latLng.title).icon(BitmapDescriptorFactory.fromResource(R.drawable.mosque)));
markers.add(marker);
MarkerOptions mp = new MarkerOptions();
mp.title(latLng.title);
}
}
}
Your custom object:
private class CustomObject {
public LatLng latLng;
public String title;
}

In ArrayList<LatLng> doInBackground(LatLng... params) method, you shouldn't return (ArrayList<LatLng>) listt;. Instead, you should return an iterable object that has property LatLng to hold latitude/longitude information as well as a String property to hold the marker name. Then in your protected void onPostExecute() method you can pass that iterable object and use forloop to set the marker's title property with the name.
class LocationInfo
{
public LocatioInfo(LatLng latlng, string name)
{
this.latlng = latlng;
this.name = name;
}
LatLng latlng;
String name;
}
ArrayList<LocationInfo> doInBackground(LocationInfo... params)
{
...
List<LocationInfo> listt = new ArrayList<LocationInfo>();
for (JsonElement element : jsonArray)
{
...
LatLng latlng = new LatLng(x, y);
listt.add(new LocationInfo(latlng, name));
}
}
protected void onPostExecute(ArrayList<LocationInfo> locationInfos)
{
for (locationInfo locationInfo : locationInfos)
{
...
LatLng l = locationInfo.latlng;
String n = locationInfo.name;
Marker marker = mMap.addMarker(new MarkerOptions().position(l).title(n).icon(BitmapDescriptorFactory.fromResource(R.drawable.mosque)));
}
}

My app is crashing when i give Space bar in autocompletetextview

My app is crashing when i give space bar in autocompletetextview.
public class MainActivity extends AppCompatActivity implements OnMapReadyCallback,
GoogleApiClient.ConnectionCallbacks,GoogleApiClient.OnConnectionFailedListener,
LocationListener, AdapterView.OnItemClickListener {
private GoogleMap mMap;
GoogleApiClient mGoogleApiClient;
Location mLastLocation;
Marker mCurrLocationMarker,FindMarker;
LocationRequest mLocationRequest;
AutoCompleteTextView atvPlaces;
DownloadTask placesDownloadTask;
DownloadTask placeDetailsDownloadTask;
ParserTask placesParserTask;
ParserTask placeDetailsParserTask;
LatLng latLng;
final int PLACES = 0;
final int PLACES_DETAILS = 1;
ListView lv;
ImageButton remove;
private boolean exit = false;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
// setSupportActionBar(toolbar);
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
checkLocationPermission();
}
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
onLocationChanged(mLastLocation);
}
});
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
remove = (ImageButton)findViewById(R.id.place_autocomplete_clear_button);
// Getting a reference to the AutoCompleteTextView
atvPlaces = (AutoCompleteTextView) findViewById(R.id.id_search_EditText);
atvPlaces.setThreshold(1);
// Adding textchange listener
atvPlaces.addTextChangedListener(new TextWatcher() {
#Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
// Creating a DownloadTask to download Google Places matching "s"
placesDownloadTask = new DownloadTask(PLACES);
// Getting url to the Google Places Autocomplete api
String url = getAutoCompleteUrl(s.toString());
// Start downloading Google Places
// This causes to execute doInBackground() of DownloadTask class
placesDownloadTask.execute(url);
if (!atvPlaces.getText().toString().equals("")){
lv.setVisibility(View.VISIBLE);
remove.setVisibility(View.VISIBLE);
}else {
lv.setVisibility(View.GONE);
remove.setVisibility(View.GONE);
}
}
#Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
#Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
}
});
// Setting an item click listener for the AutoCompleteTextView dropdown list
/* atvPlaces.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View arg1, int index,
long id) {
ListView lv = (ListView) arg0;
SimpleAdapter adapter = (SimpleAdapter) arg0.getAdapter();
HashMap<String, String> hm = (HashMap<String, String>) adapter.getItem(index);
// Creating a DownloadTask to download Places details of the selected place
placeDetailsDownloadTask = new DownloadTask(PLACES_DETAILS);
// Getting url to the Google Places details api
String url = getPlaceDetailsUrl(hm.get("reference"));
// Start downloading Google Place Details
// This causes to execute doInBackground() of DownloadTask class
placeDetailsDownloadTask.execute(url);
InputMethodManager inputManager = (InputMethodManager)
getSystemService(Context.INPUT_METHOD_SERVICE);
inputManager.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(),
InputMethodManager.HIDE_NOT_ALWAYS);
}
});*/
lv=(ListView)findViewById(R.id.list);
lv.setOnItemClickListener(this);
setListenerOnWidget();
}
private void setListenerOnWidget() {
View.OnClickListener listener = new View.OnClickListener() {
#Override
public void onClick(View view) {
atvPlaces.setText("");
}
};
remove.setOnClickListener(listener);
}
#Override
public void onBackPressed() {
if(exit){
finish();
}else {
Toast.makeText(this, "Tap Back again to Exit.",
Toast.LENGTH_SHORT).show();
exit = true;
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
exit = false;
}
}, 3 * 1000);
}
}
#Override
public void onItemClick (AdapterView < ? > adapterView, View view,int i, long l){
ListView lv = (ListView) adapterView;
SimpleAdapter adapter = (SimpleAdapter) adapterView.getAdapter();
HashMap<String, String> hm = (HashMap<String, String>) adapter.getItem(i);
// Creating a DownloadTask to download Places details of the selected place
placeDetailsDownloadTask = new DownloadTask(PLACES_DETAILS);
// Getting url to the Google Places details api
String url = getPlaceDetailsUrl(hm.get("reference"));
// Start downloading Google Place Details
// This causes to execute doInBackground() of DownloadTask class
placeDetailsDownloadTask.execute(url);
InputMethodManager inputManager = (InputMethodManager)
getSystemService(Context.INPUT_METHOD_SERVICE);
inputManager.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(),
InputMethodManager.HIDE_NOT_ALWAYS);
String str = ((TextView) view.findViewById(R.id.place_name)).getText().toString();
Toast.makeText(this,str, Toast.LENGTH_SHORT).show();
atvPlaces.setText(str.replace(' ',','));
lv.setVisibility(view.GONE);
}
private String getPlaceDetailsUrl(String ref) {
// Obtain browser key from https://code.google.com/apis/console
String key = "key=AIzaSyCQNRAkYhQ4CDwDV-0Oh-kNFdrUY1NwSI0";
// reference of place
String reference = "reference=" + ref;
// Sensor enabled
String sensor = "sensor=false";
// Building the parameters to the web service
String parameters = reference + "&" + sensor + "&" + key;
// Output format
String output = "json";
// Building the url to the web service
String url = "https://maps.googleapis.com/maps/api/place/details/" + output + "?" + parameters;
return url;
}
private String getAutoCompleteUrl(String place) {
// Obtain browser key from https://code.google.com/apis/console
String key = "key=AIzaSyCQNRAkYhQ4CDwDV-0Oh-kNFdrUY1NwSI0";
// place to be be searched
String input = "input=" + place;
// place type to be searched
String types = "types=geocode";
// Sensor enabled
String sensor = "sensor=false";
// Building the parameters to the web service
String parameters = input + "&" + types + "&" + sensor + "&" + key;
// Output format
String output = "json";
// Building the url to the web service
String url = "https://maps.googleapis.com/maps/api/place/autocomplete/" + output + "?" + parameters;
return url;
}
private String downloadUrl(String strUrl) throws IOException {
String data = "";
InputStream iStream = null;
HttpURLConnection urlConnection = null;
try {
URL url = new URL(strUrl);
// Creating an http connection to communicate with url
urlConnection = (HttpURLConnection) url.openConnection();
// Connecting to url
urlConnection.connect();
// Reading data from url
iStream = urlConnection.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(iStream));
StringBuffer sb = new StringBuffer();
String line = "";
while ((line = br.readLine()) != null) {
sb.append(line);
}
data = sb.toString();
br.close();
} catch (Exception e) {
Log.d("Exception while downloading url", e.toString());
} finally {
iStream.close();
urlConnection.disconnect();
}
return data;
}
public static final int MY_PERMISSIONS_REQUEST_LOCATION = 99;
public 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},
MY_PERMISSIONS_REQUEST_LOCATION);
} else {
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
MY_PERMISSIONS_REQUEST_LOCATION);
}
return false;
} else {
return true;
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
#Override
public void onConnected(#Nullable 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);
}
}
#Override
public void onConnectionSuspended(int i) {
}
#Override
public void onLocationChanged(Location location) {
mLastLocation = location;
if(mCurrLocationMarker != null){
mCurrLocationMarker.remove();
}
LatLng latLng = new LatLng(location.getLatitude(),location.getLongitude());
MarkerOptions markerOption = new MarkerOptions();
markerOption.position(latLng);
markerOption.title("Current Position");
markerOption.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_MAGENTA));
mCurrLocationMarker = mMap.addMarker(markerOption);
Toast.makeText(this,"Location changed",Toast.LENGTH_SHORT).show();
CameraPosition cameraPosition = new CameraPosition.Builder().target(latLng).zoom(13).build();
mMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
if(mGoogleApiClient != null){
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient,this);
}
loadNearByPlaces(location.getLatitude(), location.getLongitude());
}
#Override
public void onConnectionFailed(#NonNull ConnectionResult connectionResult) {
}
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (ContextCompat.checkSelfPermission(this,
android.Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
buildGoogleApiClient();
mMap.setMyLocationEnabled(true);
}
} else {
buildGoogleApiClient();
mMap.setMyLocationEnabled(true);
}
}
protected synchronized void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
mGoogleApiClient.connect();
}
#Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResult) {
switch (requestCode) {
case MY_PERMISSIONS_REQUEST_LOCATION: {
if (grantResult.length > 0
&& grantResult[0] == PackageManager.PERMISSION_GRANTED) {
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
if (mGoogleApiClient == null) {
buildGoogleApiClient();
}
mMap.setMyLocationEnabled(true);
}
} else {
Toast.makeText(this, "permisison denied", Toast.LENGTH_LONG).show();
}
return;
}
}
}
private void loadNearByPlaces(double latitude, double longitude) {
//YOU Can change this type at your own will, e.g hospital, cafe, restaurant.... and see how it all works
String type = "liquor";
StringBuilder googlePlacesUrl =
new StringBuilder("https://maps.googleapis.com/maps/api/place/nearbysearch/json?");
googlePlacesUrl.append("location=").append(latitude).append(",").append(longitude);
googlePlacesUrl.append("&radius=").append(PROXIMITY_RADIUS);
googlePlacesUrl.append("&types=").append(type);
googlePlacesUrl.append("&sensor=true");
googlePlacesUrl.append("&key=" + GOOGLE_BROWSER_API_KEY);
JsonObjectRequest request = new JsonObjectRequest(googlePlacesUrl.toString(),
new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject result) {
Log.i(TAG, "onResponse: Result= " + result.toString());
parseLocationResult(result);
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.e(TAG, "onErrorResponse: Error= " + error);
Log.e(TAG, "onErrorResponse: Error= " + error.getMessage());
}
});
AppController.getInstance().addToRequestQueue(request);
}
private void parseLocationResult(JSONObject result) {
String id, place_id, placeName = null, reference, icon, vicinity = null;
double latitude, longitude;
try {
JSONArray jsonArray = result.getJSONArray("results");
if (result.getString(STATUS).equalsIgnoreCase(OK)) {
//mMap.clear();
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject place = jsonArray.getJSONObject(i);
id = place.getString(ATM_ID);
place_id = place.getString(PLACE_ID);
if (!place.isNull(NAME)) {
placeName = place.getString(NAME);
}
if (!place.isNull(VICINITY)) {
vicinity = place.getString(VICINITY);
}
latitude = place.getJSONObject(GEOMETRY).getJSONObject(LOCATION)
.getDouble(LATITUDE);
longitude = place.getJSONObject(GEOMETRY).getJSONObject(LOCATION)
.getDouble(LONGITUDE);
reference = place.getString(REFERENCE);
icon = place.getString(ICON);
MarkerOptions markerOptions = new MarkerOptions();
LatLng latLng = new LatLng(latitude, longitude);
markerOptions.position(latLng);
markerOptions.title(placeName);
markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_BLUE));
markerOptions.snippet(vicinity);
mMap.addMarker(markerOptions);
mMap.setInfoWindowAdapter(new GoogleMap.InfoWindowAdapter() {
#Override
public View getInfoWindow(Marker arg0) {
return null;
}
#Override
public View getInfoContents(Marker marker) {
View myContentsView = getLayoutInflater().inflate(R.layout.marker, null);
TextView tvTitle = ((TextView)myContentsView.findViewById(R.id.title));
tvTitle.setText(marker.getTitle());
TextView tvSnippet = ((TextView)myContentsView.findViewById(R.id.snippet));
tvSnippet.setText(marker.getSnippet());
return myContentsView;
}
});
}
Toast.makeText(getBaseContext(), jsonArray.length() + " ATM_FOUND!",
Toast.LENGTH_SHORT).show();
} else if (result.getString(STATUS).equalsIgnoreCase(ZERO_RESULTS)) {
Toast.makeText(getBaseContext(), "No ATM found in 5KM radius!!!",
Toast.LENGTH_LONG).show();
}
} catch (JSONException e) {
e.printStackTrace();
Log.e(TAG, "parseLocationResult: Error=" + e.getMessage());
}
}
private class DownloadTask extends AsyncTask<String, Void, String> {
private int downloadType = 0;
// Constructor
public DownloadTask(int type) {
this.downloadType = type;
}
#Override
protected String doInBackground(String... url) {
// For storing data from web service
String data = "";
try {
// Fetching the data from web service
data = downloadUrl(url[0]);
} catch (Exception e) {
Log.d("Background Task", e.toString());
}
return data;
}
#Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
switch (downloadType) {
case PLACES:
// Creating ParserTask for parsing Google Places
placesParserTask = new ParserTask(PLACES);
// Start parsing google places json data
// This causes to execute doInBackground() of ParserTask class
placesParserTask.execute(result);
break;
case PLACES_DETAILS:
// Creating ParserTask for parsing Google Places
placeDetailsParserTask = new ParserTask(PLACES_DETAILS);
// Starting Parsing the JSON string
// This causes to execute doInBackground() of ParserTask class
placeDetailsParserTask.execute(result);
}
}
}
private class ParserTask extends AsyncTask<String, Integer, List<HashMap<String, String>>> {
int parserType = 0;
public ParserTask(int type) {
this.parserType = type;
}
#Override
protected List<HashMap<String, String>> doInBackground(String... jsonData) {
JSONObject jObject;
List<HashMap<String, String>> list = null;
try {
jObject = new JSONObject(jsonData[0]);
switch (parserType) {
case PLACES:
PlaceJSONParser placeJsonParser = new PlaceJSONParser();
// Getting the parsed data as a List construct
list = placeJsonParser.parse(jObject);
break;
case PLACES_DETAILS:
PlaceDetailsJSONParser placeDetailsJsonParser = new PlaceDetailsJSONParser();
// Getting the parsed data as a List construct
list = placeDetailsJsonParser.parse(jObject);
}
} catch (Exception e) {
Log.d("Exception", e.toString());
}
return list;
}
#Override
protected void onPostExecute(List<HashMap<String, String>> result) {
switch (parserType) {
case PLACES:
String[] from = new String[]{"description"};
int[] to = new int[]{R.id.place_name};
// Creating a SimpleAdapter for the AutoCompleteTextView
//SimpleAdapter adapter = new SimpleAdapter(getBaseContext(), result, android.R.layout.simple_list_item_1, from, to);
// Setting the adapter
//atvPlaces.setAdapter(adapter);
ListAdapter adapter = new SimpleAdapter(MainActivity.this, result,R.layout.row,from,to);
// Adding data into listview
lv.setAdapter(adapter);
break;
case PLACES_DETAILS:
String location = atvPlaces.getText().toString();
if (location != null && !location.equals("")) {
new GeocoderTask().execute(location);
}
break;
}
}
}
private class GeocoderTask extends AsyncTask<String, Void, List<Address>> {
#Override
protected List<Address> doInBackground(String... locationName) {
// TODO Auto-generated method stub
Geocoder geocoder = new Geocoder(getBaseContext());
List<Address> addresses = null;
try {
// Getting a maximum of 3 Address that matches the input text
addresses = geocoder.getFromLocationName(locationName[0], 3);
} catch (IOException e) {
e.printStackTrace();
}
return addresses;
}
protected void onPostExecute(List<Address> addresses) {
if(addresses==null || addresses.size()==0){
Toast.makeText(getBaseContext(), "No Location found", Toast.LENGTH_SHORT).show();
}
for(int i=0;i<addresses.size();i++){
Address address = (Address)addresses.get(i);
latLng = new LatLng(address.getLatitude(), address.getLongitude());
String addressText = String.format("%s, %s",
address.getMaxAddressLineIndex() > 0 ? address.getAddressLine(0) : "",
address.getCountryName());
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.position(latLng);
markerOptions.title("Find Location");
markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED));
FindMarker = mMap.addMarker(markerOptions);
CameraPosition cameraPosition = new CameraPosition.Builder().target(latLng).zoom(13).build();
mMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
loadNearByPlaces(address.getLatitude(), address.getLongitude());
}
}
}
}

Add trim() while getAutoCompleteUrl()
#Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
// Creating a DownloadTask to download Google Places matching "s"
placesDownloadTask = new DownloadTask(PLACES);
// Getting url to the Google Places Autocomplete api
String url = getAutoCompleteUrl(s.toString().trim());
....
}

add this line:
protected void onPostExecute(List<Address> addresses) {
if(addresses==null || addresses.size()==0){
Toast.makeText(getBaseContext(), "No Location found", Toast.LENGTH_SHORT).show();
return;
}
for(int i=0;i<addresses.size();i++){
....