Using JSON for Google Maps: Markers not Showing up

Using JSON for Google Maps: Markers not Showing up - android

I don't know what's wrong with my code I followed every tutorials and I read and followed every answer of the questions that had same issue like mine but it didn't work for me yet, that's my code below please give me an answer and don't tell me that my question is duplicated because I already know that but it's not working for me.
mapsActivity.java
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback,
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener,
GoogleMap.OnMarkerClickListener,
LocationListener {
private GoogleMap mMap;
GoogleApiClient mGoogleApiClient;
Location mLastLocation;
Marker mCurrLocationMarker;
LocationRequest mLocationRequest;
private static final LatLng SYDNEY = new LatLng(-33.87365, 151.20689);
private Marker mSydney;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
setUpMapIfNeeded();
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);
}
/**
* 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);
//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(String.valueOf(latLng));
markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_MAGENTA));
mCurrLocationMarker = mMap.addMarker(markerOptions);
//move map camera
mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
mMap.animateCamera(CameraUpdateFactory.zoomTo(11));
// Set a listener for marker click.
mMap.setOnMarkerClickListener(this);
//stop location updates
if (mGoogleApiClient != null) {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
}
}
/** Called when the user clicks a marker. */
#Override
public boolean onMarkerClick(final Marker marker) {
final String addcamera = marker.getTitle();
RequestQueue MyRequestQueue = Volley.newRequestQueue(this);
String url = "http://example.com";
StringRequest MyStringRequest = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
//This code is executed if the server responds, whether or not the response contains data.
//The String 'response' contains the server's response.
}
}, new Response.ErrorListener() { //Create an error listener to handle errors appropriately.
#Override
public void onErrorResponse(VolleyError error) {
//This code is executed if there is an error.
}
}) {
protected Map<String, String> getParams() {
Map<String, String> MyData = new HashMap<String, String>();
MyData.put("latest", addcamera); //Add the data you'd like to send to the server.
return MyData;
}
};
MyRequestQueue.add(MyStringRequest);
// Return false to indicate that we have not consumed the event and that we wish
// for the default behavior to occur (which is for the camera to move such that the
// marker is centered and for the marker's info window to open, if it has one).
return 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.
}
}
#Override
protected void onResume() {
super.onResume();
setUpMapIfNeeded();
}
private void setUpMapIfNeeded() {
if (mMap == null) {
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
if (mMap != null) {
//setUpMap();
new MarkerTask().execute();
}
}
}
}
markerTask.java
class MarkerTask extends AsyncTask<Void, Void, String> {
private static final String LOG_TAG = "ExampleApp";
private static final String SERVICE_URL = "https://api.myjson.com/bins/4jb09";
private GoogleMap mMap;
// Invoked by execute() method of this object
#Override
protected String doInBackground(Void... args) {
HttpURLConnection conn = null;
final StringBuilder json = new StringBuilder();
try {
// Connect to the web service
URL url = new URL(SERVICE_URL);
conn = (HttpURLConnection) url.openConnection();
InputStreamReader in = new InputStreamReader(conn.getInputStream());
// Read the JSON data into the StringBuilder
int read;
char[] buff = new char[1024];
while ((read = in.read(buff)) != -1) {
json.append(buff, 0, read);
}
} catch (IOException e) {
Log.e(LOG_TAG, "Error connecting to service", e);
//throw new IOException("Error connecting to service", e); //uncaught
} finally {
if (conn != null) {
conn.disconnect();
}
}
return json.toString();
}
// Executed after the complete execution of doInBackground() method
#Override
protected void onPostExecute(String json) {
try {
// De-serialize the JSON string into an array of city objects
JSONArray jsonArray = new JSONArray(json);
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonObj = jsonArray.getJSONObject(i);
LatLng latLng = new LatLng(jsonObj.getJSONArray("latlng").getDouble(0),
jsonObj.getJSONArray("latlng").getDouble(1));
//move CameraPosition on first result
if (i == 0) {
CameraPosition cameraPosition = new CameraPosition.Builder()
.target(latLng).zoom(13).build();
mMap.animateCamera(CameraUpdateFactory
.newCameraPosition(cameraPosition));
}
// Create a marker for each city in the JSON data.
mMap.addMarker(new MarkerOptions()
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_BLUE))
.title(jsonObj.getString("name"))
.snippet(Integer.toString(jsonObj.getInt("population")))
.position(latLng));
}
} catch (JSONException e) {
Log.e(LOG_TAG, "Error processing JSON", e);
}
}
}
activity_maps.xml
<?xml version="1.0" encoding="utf-8"?>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:map="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MapsActivity" />

For those in future come to this question I used this great tutorial and thanks to it's owner, I added the link below it's totally different from my code but it's doing what I want.
https://github.com/rrsaikat/MultipleMarker_Using_Volley/blob/master/app/src/main/java/com/rrrsaikat88gmail/multiplemarker_using_volley/MapsActivity.java
We don't need markerTask class anymore, And the final code is:
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback,LocationListener,GoogleMap.OnMarkerClickListener {
private GoogleMap mMap;
public static final String URL="http://rrsaikat.mydiscussion.net/myjson/location.php";
private JSONArray result;
#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);
}
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
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;
}
mMap.setMyLocationEnabled(true);
RequestQueue requestQueue= Volley.newRequestQueue(getApplicationContext());
StringRequest stringRequest=new StringRequest(Request.Method.GET, URL, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
Log.d("JSONResult" , response.toString());
JSONObject j = null;
try{
j =new JSONObject(response);
result = j.getJSONArray("FL");
for(int i=0;i<result.length();i++){
JSONObject jsonObject1=result.getJSONObject(i);
String lat_i = jsonObject1.getString("1");
String long_i = jsonObject1.getString("2");
mMap.addMarker(new MarkerOptions()
.position(new LatLng(Double.parseDouble(lat_i) , Double.parseDouble(long_i)))
.title(Double.valueOf(lat_i).toString() + "," + Double.valueOf(long_i).toString())
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_ROSE))
);
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(23.6850,90.3563), 6.0f));
}
}catch (NullPointerException e){
e.printStackTrace();
}
catch (JSONException e){
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
error.printStackTrace();
Toast.makeText(MapsActivity.this, error.getMessage(), Toast.LENGTH_LONG).show();
}
});
int socketTimeout = 10000;
RetryPolicy policy = new DefaultRetryPolicy(socketTimeout, DefaultRetryPolicy.DEFAULT_MAX_RETRIES, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT);
stringRequest.setRetryPolicy(policy);
requestQueue.add(stringRequest);
}
#Override
public void onLocationChanged(Location location) {
}
#Override
public void onStatusChanged(String s, int i, Bundle bundle) {
}
#Override
public void onProviderEnabled(String s) {
}
#Override
public void onProviderDisabled(String s) {
}
#Override
public boolean onMarkerClick(Marker marker) {
return false;
}
}

Related

Google Maps Nearby Places shows only Toasts

I'm working on a final year project and downloaded this code it was working but now I can't understand why it stops working it shows only Toasts, maybe a problem with API key can you help me please.
public class MapActivity extends FragmentActivity implements OnMapReadyCallback,
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener,
LocationListener,
GoogleMap.OnMarkerClickListener,
GoogleMap.OnMarkerDragListener {
private GoogleMap mMap;
GoogleApiClient mGoogleApiClient;
Location mLastLocation;
Marker mCurrLocationMarker;
LocationRequest mLocationRequest;
int PROXIMITY_RADIUS = 20000;
double latitude, longitude;
double end_latitude, end_longitude;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_map);
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);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater menuInflater= getMenuInflater();
menuInflater.inflate(R.menu.menu_item_maps, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
Object dataTransfer[] = new Object[2];
GetNearbyPlacesData getNearbyPlacesData = new GetNearbyPlacesData();
switch (item.getItemId()){
case R.id.map_menuitemresto:
mMap.clear();
dataTransfer = new Object[2];
String restaurant = "restaurant";
String url = getUrl(latitude, longitude, restaurant);
getNearbyPlacesData = new GetNearbyPlacesData();
dataTransfer[0] = mMap;
dataTransfer[1] = url;
getNearbyPlacesData.execute(dataTransfer);
Toast.makeText(MapActivity.this, "Showing Nearby Restaurants", Toast.LENGTH_LONG).show();
break;
}
return super.onOptionsItemSelected(item);
}
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;
//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);
}
mMap.setOnMarkerDragListener(this);
mMap.setOnMarkerClickListener(this);
}
protected synchronized void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
mGoogleApiClient.connect();
}
public void onClick(View v)
{
Object dataTransfer[] = new Object[2];
GetNearbyPlacesData getNearbyPlacesData = new GetNearbyPlacesData();
switch(v.getId()) {
case R.id.B_search: {
EditText tf_location = (EditText) findViewById(R.id.TF_location);
String location = tf_location.getText().toString();
List<Address> addressList = null;
MarkerOptions markerOptions = new MarkerOptions();
Log.d("location = ", location);
if (!location.equals("")) {
Geocoder geocoder = new Geocoder(this);
try {
addressList = geocoder.getFromLocationName(location, 5);
} catch (IOException e) {
e.printStackTrace();
}
if (addressList != null) {
for (int i = 0; i < addressList.size(); i++) {
Address myAddress = addressList.get(i);
LatLng latLng = new LatLng(myAddress.getLatitude(), myAddress.getLongitude());
markerOptions.position(latLng);
mMap.addMarker(markerOptions);
mMap.animateCamera(CameraUpdateFactory.newLatLng(latLng));
}
}
}
}
break;
case R.id.B_hotels:
//mMap.clear();
String hospital = "hotel";
String url = getUrl(latitude, longitude, hospital);
dataTransfer[0] = mMap;
dataTransfer[1] = url;
getNearbyPlacesData.execute(dataTransfer);
Toast.makeText(MapActivity.this, "Showing Nearby Hotels", Toast.LENGTH_LONG).show();
break;
case R.id.B_restaurant:
//mMap.clear();
dataTransfer = new Object[2];
String restaurant = "restaurant";
url = getUrl(latitude, longitude, restaurant);
getNearbyPlacesData = new GetNearbyPlacesData();
dataTransfer[0] = mMap;
dataTransfer[1] = url;
getNearbyPlacesData.execute(dataTransfer);
Toast.makeText(MapActivity.this, "Showing Nearby Restaurants", Toast.LENGTH_LONG).show();
break;
case R.id.B_diver:
//mMap.clear();
String school = "hotel";
dataTransfer = new Object[2];
url = getUrl(latitude, longitude, school);
getNearbyPlacesData = new GetNearbyPlacesData();
dataTransfer[0] = mMap;
dataTransfer[1] = url;
getNearbyPlacesData.execute(dataTransfer);
Toast.makeText(MapActivity.this, "Showing Nearby Hotels", Toast.LENGTH_LONG).show();
break;
case R.id.B_to:
dataTransfer = new Object[3];
url = getDirectionsUrl();
GetDirectionsData getDirectionsData = new GetDirectionsData();
dataTransfer[0] = mMap;
dataTransfer[1] = url;
dataTransfer[2] = new LatLng(end_latitude, end_longitude);
getDirectionsData.execute(dataTransfer);
break;
}
}
private String getDirectionsUrl()
{
StringBuilder googleDirectionsUrl = new StringBuilder("https://maps.googleapis.com/maps/api/directions/json?");
googleDirectionsUrl.append("origin="+latitude+","+longitude);
googleDirectionsUrl.append("&destination="+end_latitude+","+end_longitude);
googleDirectionsUrl.append("&key="+"AIzaSyBH5BAD65au_keEdICl_7KFxUzfT8OheVY");
return googleDirectionsUrl.toString();
}
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=" + "AIzaSyDN7RJFmImYAca96elyZlE5s_fhX-MMuhk");
Log.d("getUrl", googlePlacesUrl.toString());
return (googlePlacesUrl.toString());
}
#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) {
Log.d("onLocationChanged", "entered");
mLastLocation = location;
if (mCurrLocationMarker != null) {
mCurrLocationMarker.remove();
}
latitude = location.getLatitude();
longitude = location.getLongitude();
LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.position(latLng);
markerOptions.draggable(true);
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(MapActivity.this,"Your Current Location", Toast.LENGTH_LONG).show();
//stop location updates
if (mGoogleApiClient != null) {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
Log.d("onLocationChanged", "Removing Location Updates");
}
}
#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.
}
}
#Override
public boolean onMarkerClick(Marker marker) {
marker.setDraggable(true);
return false;
}
#Override
public void onMarkerDragStart(Marker marker) {
}
#Override
public void onMarkerDrag(Marker marker) {
}
#Override
public void onMarkerDragEnd(Marker marker) {
end_latitude = marker.getPosition().latitude;
end_longitude = marker.getPosition().longitude;
Log.d("end_lat",""+end_latitude);
Log.d("end_lng",""+end_longitude);
}
public void changeTypeMap(View view) {
if (mMap.getMapType() == GoogleMap.MAP_TYPE_NORMAL) {
mMap.setMapType(GoogleMap.MAP_TYPE_SATELLITE);
} else
mMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
}
}

I have a button to show nearby places with onClickListener
But this will not filter the places
private static final String TAG = "MapActivity";
private static final int PLACE_PICKER_REQUEST = 1;
YOUR_BUTTON = (Button) findViewById(R.id.YOUR_BUTTON_ID)
YOUR_BUTTON.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
PlacePicker.IntentBuilder builder = new PlacePicker.IntentBuilder();
try {
startActivityForResult(builder.build(MapActivity.this), PLACE_PICKER_REQUEST);
} catch (GooglePlayServicesRepairableException e) {
Log.e(TAG, "onClick: Repairable: " + e.getMessage() );
} catch (GooglePlayServicesNotAvailableException e) {
Log.e(TAG, "onClick: NotAvailable: " + e.getMessage() );
}
}
});

When placing markers on map activity the camera move to the marker

I am using nearbyPlaces web service and I have a problem, I am putting a marker on the map for each pharmacie that it finds, but the camera always move to the marker and it does not stay in the current user position dot.
this is the code
public class GetNearbyPlacesData extends AsyncTask<Object, String, String> {
String googlePlacesData;
GoogleMap mMap;
String url;
#Override
protected String doInBackground(Object... params) {
try {
Log.d("GetNearbyPlacesData", "doInBackground entered");
mMap = (GoogleMap) params[0];
url = (String) params[1];
DownloadUrl downloadUrl = new DownloadUrl();
googlePlacesData = downloadUrl.readUrl(url);
Log.d("GooglePlacesReadTask", "doInBackground Exit");
} catch (Exception e) {
Log.d("GooglePlacesReadTask", e.toString());
}
return googlePlacesData;
}
#Override
protected void onPostExecute(String result) {
Log.d("GooglePlacesReadTask", "onPostExecute Entered");
List<HashMap<String, String>> nearbyPlacesList = null;
DataParser dataParser = new DataParser();
nearbyPlacesList = dataParser.parse(result);
ShowNearbyPlaces(nearbyPlacesList);
Log.d("GooglePlacesReadTask", "onPostExecute Exit");
}
private void ShowNearbyPlaces(List<HashMap<String, String>> nearbyPlacesList) {
for (int i = 0; i < nearbyPlacesList.size(); i++) {
Log.d("onPostExecute","Entered into showing locations");
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_GREEN));
HashMap<String, String> googlePlace = nearbyPlacesList.get(i);
double lat = Double.parseDouble(googlePlace.get("lat"));
double lng = Double.parseDouble(googlePlace.get("lng"));
String placeName = googlePlace.get("place_name");
String vicinity = googlePlace.get("vicinity");
LatLng latLng = new LatLng(lat, lng);
markerOptions.position(latLng);
markerOptions.title(placeName + " : " + vicinity);
mMap.addMarker(markerOptions);
//markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_GREEN));
//move map camera
mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
mMap.animateCamera(CameraUpdateFactory.zoomTo(14.0f));
}
}
}
public class NearbyPharmaciesFragment extends Fragment implements OnMapReadyCallback,
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener,
LocationListener {
private GoogleMap mMap;
double latitude;
double longitude;
private int PROXIMITY_RADIUS = 1000;
LocationManager locationManager;
GoogleApiClient mGoogleApiClient;
AlertDialog alert = null;
Location mLastLocation;
Marker mCurrLocationMarker;
LocationRequest mLocationRequest;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_nearby_pharmacies, container, false);
locationManager = (LocationManager) getActivity().getSystemService(LOCATION_SERVICE);
if ( !locationManager.isProviderEnabled( LocationManager.GPS_PROVIDER ) ) {
AlertNoGps();
}
// Inflate the layout for this fragment
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) getActivity().getSupportFragmentManager()
SupportMapFragment mapFragment = (SupportMapFragment) getChildFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
return rootView;
}
private boolean CheckGooglePlayServices() {
GoogleApiAvailability googleAPI = GoogleApiAvailability.getInstance();
int result = googleAPI.isGooglePlayServicesAvailable(getActivity());
if(result != ConnectionResult.SUCCESS) {
if(googleAPI.isUserResolvableError(result)) {
googleAPI.getErrorDialog(getActivity(), 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_NORMAL);
//Initialize Google Play Services
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (ContextCompat.checkSelfPermission(getActivity(),
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(getActivity())
.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(getActivity(),
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=" + "API_KEY");
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));
float zoom=11.0f;
mMap.animateCamera(CameraUpdateFactory.zoomTo(zoom));
//Toast.makeText(getActivity(),"Your Current Location", Toast.LENGTH_LONG).show();
mMap.clear();
String pharmacy = "pharmacy";
String url = getUrl(latitude, longitude, pharmacy);
Object[] DataTransfer = new Object[2];
DataTransfer[0] = mMap;
DataTransfer[1] = url;
if (new InternetWatcher().isConnectedToNetwork(getActivity())){
GetNearbyPlacesData getNearbyPlacesData = new GetNearbyPlacesData();
getNearbyPlacesData.execute(DataTransfer);
}else{
Toast.makeText(getActivity(), R.string.internet_para_ver_farmacias, Toast.LENGTH_LONG).show();
getActivity().onBackPressed();
}
//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(getActivity(),
Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
// Asking user if explanation is needed
if (ActivityCompat.shouldShowRequestPermissionRationale(getActivity(),
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(getActivity(),
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
MY_PERMISSIONS_REQUEST_LOCATION);
} else {
// No explanation needed, we can request the permission.
ActivityCompat.requestPermissions(getActivity(),
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(getActivity(),
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(getActivity(), "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.
}
}
private void AlertNoGps() {
final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setMessage(R.string.gps_no_activado_dialogo)
.setCancelable(false)
.setPositiveButton(R.string.si_gps, new DialogInterface.OnClickListener() {
public void onClick(#SuppressWarnings("unused") final DialogInterface dialog, #SuppressWarnings("unused") final int id) {
startActivity(new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS));
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(final DialogInterface dialog, #SuppressWarnings("unused") final int id) {
getActivity().onBackPressed();
Toast.makeText(getActivity(), R.string.gps_Required, Toast.LENGTH_LONG).show();
dialog.cancel();
}
});
alert = builder.create();
alert.show();
}
Any help please? thanks in advance

Your posted code includes these lines:
//move map camera
mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
mMap.animateCamera(CameraUpdateFactory.zoomTo(14.0f));
Sounds like you don't want to move the camera, so you should probably delete them.

download video file using webview

i am trying to download video file using web view on click button when i click on button it start download but when i check on file manager there is nothing inside it. this is my url http://segoma.com/v.php?type=view&id=U5K8Q4F6DD which i have to download video. so help me to solve this issue.
i have also check many ways using webview download but doesn't help me.
i have try following code.
public class TestActivity extends Activity {
WebView webView;
String image_url;
#SuppressLint("SetJavaScriptEnabled")
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_test);
if (android.os.Build.VERSION.SDK_INT > 14) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
}
webView = (WebView) findViewById(R.id.webView_certy);
if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
} else {
ActivityCompat.requestPermissions(this,
new String[]{
Manifest.permission.WRITE_EXTERNAL_STORAGE
}, 23
);
}
}
final String stone_barcodeno = getIntent().getStringExtra("url");
if (stone_barcodeno.equals("")) {
Toast.makeText(this, "No image for this stone", Toast.LENGTH_SHORT).show();
} else {
image_url = stone_barcodeno;
Log.d("1", image_url);
webView.loadUrl(image_url);
webView.setPadding(0, 0, 0, 0);
//webView.setInitialScale(getScale());
webView.getSettings().setBuiltInZoomControls(true);
///=========================
webView.setInitialScale(1);
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setLoadWithOverviewMode(true);
webView.getSettings().setUseWideViewPort(true);
webView.setScrollBarStyle(View.SCROLLBARS_OUTSIDE_OVERLAY);
webView.setScrollbarFadingEnabled(false);
}
/* Defining a button click listener for the Download button */
View.OnClickListener downloadsListener = new View.OnClickListener() {
#Override
public void onClick(View v) {
File direct = new File(Environment.getExternalStorageDirectory() + "/abc");
if (!direct.exists()) {
if (!direct.mkdirs())
Log.w("","Failed to create dir!");
}
DownloadManager mgr = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
Uri downloadUri = Uri.parse(image_url);
DownloadManager.Request request = new DownloadManager.Request(
downloadUri);
request.setAllowedNetworkTypes(
DownloadManager.Request.NETWORK_WIFI | DownloadManager.Request.NETWORK_MOBILE)
.setAllowedOverRoaming(false).setTitle("abc")
.setDescription("Image certi Downloading...")
.setDestinationInExternalPublicDir("/abc", stone_barcodeno + "_certi" + ".jpg");
mgr.enqueue(request);
Toast.makeText(TestActivity.this, "Image Downloaded Successfully on this Device.", Toast.LENGTH_LONG).show();
}
};
btn_download.setOnClickListener(downloadsListener);
}
}
Map Demo
Mapfrag.java
public class Mapfrag extends SupportMapFragment implements OnMapReadyCallback {
// private GoogleMap mMap;
// ArrayList<LatLng> MarkerPoints;
GoogleApiClient mGoogleApiClient;
// Location mLastLocation;
// Marker mCurrLocationMarker;
// LocationRequest mLocationRequest;
private GoogleMap mMap;
private List<LocationModel> mListMarker = new ArrayList<>();
private List<ListAddress> addresslist;
String add []={"surat","bombay","pune","delhi"};
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
View root = inflater.inflate(R.layout.fragment_map, null, false);
initilizeMap();
return root;
}
private void initilizeMap() {
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) getChildFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
addresslist=new ArrayList<>();
}
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
// getAllDataLocationLatLng();
for (int p=0;p<add.length;p++){
LatLng ll=getLocationFromAddress(getActivity(),add[p]);
addresslist.add(new ListAddress(ll.latitude,ll.longitude));
}
//Initialize Google Play Services
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (ContextCompat.checkSelfPermission(getActivity(),
android.Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
//buildGoogleApiClient();
mMap.setMyLocationEnabled(true);
}
}
else {
// buildGoogleApiClient();
mMap.setMyLocationEnabled(true);
}
if(addresslist.size()>0){
initMarker(addresslist);
}
}
public LatLng getLocationFromAddress(Context context, String strAddress) {
Geocoder coder = new Geocoder(context);
List<Address> address;
LatLng p1 = null;
try {
// May throw an IOException
address = coder.getFromLocationName(strAddress, 5);
if (address == null) {
return null;
}
Address location = address.get(0);
p1 = new LatLng(location.getLatitude(), location.getLongitude() );
} catch (IOException ex) {
ex.printStackTrace();
}
return p1;
}
private void getAllDataLocationLatLng(){
final ProgressDialog dialog = new ProgressDialog(getActivity());
dialog.setMessage("Menampilkan data marker ..");
dialog.show();
ApiService apiService = ApiClient.getClient().create(ApiService.class);
Call<ListLocationModel> call = apiService.getAllLocation();
call.enqueue(new Callback<ListLocationModel>() {
#Override
public void onResponse(Call<ListLocationModel> call, Response<ListLocationModel> response) {
dialog.dismiss();
mListMarker = response.body().getmData();
//initMarker(mListMarker);
}
#Override
public void onFailure(Call<ListLocationModel> call, Throwable t) {
dialog.dismiss();
Toast.makeText(getActivity(), t.getMessage(), Toast.LENGTH_SHORT).show();
}
});
}
private void initMarker(List<ListAddress> listData){
//iterasi semua data dan tampilkan markernya
for (int i=0; i<listData.size(); i++){
//set latlng nya
LatLng location = new LatLng(listData.get(i).getLatutide(),listData.get(i).getLongitude());
//tambahkan markernya
mMap.addMarker(new MarkerOptions().position(location).title(add[i]));
//set latlng index ke 0
LatLng latLng = new LatLng(listData.get(0).getLatutide(),listData.get(0).getLongitude());
//lalu arahkan zooming ke marker index ke 0
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(latLng.latitude,latLng.longitude), 4));
}
}
/* protected synchronized void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(getActivity())
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
mGoogleApiClient.connect();
}
#Override
public void onConnected(Bundle bundle) {
}
#Override
public void onConnectionSuspended(int i) {
}
#Override
public void onLocationChanged(Location location) {
}
#Override
public void onConnectionFailed(ConnectionResult connectionResult) {
}*/
public static final int MY_PERMISSIONS_REQUEST_LOCATION = 99;
public boolean checkLocationPermission(){
if (ContextCompat.checkSelfPermission(getActivity(),
android.Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
// Asking user if explanation is needed
if (ActivityCompat.shouldShowRequestPermissionRationale(getActivity(),
android.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(getActivity(),
new String[]{android.Manifest.permission.ACCESS_FINE_LOCATION},
MY_PERMISSIONS_REQUEST_LOCATION);
} else {
// No explanation needed, we can request the permission.
ActivityCompat.requestPermissions(getActivity(),
new String[]{android.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(getActivity(),
android.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(getActivity(), "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.
}
}
}

You download video in the location you set yourself in this line:
.setDestinationInExternalPublicDir("/abc", stone_barcodeno + "_certi" + ".jpg");
if you can't find this directory(abc) set location to a place that are familiar to you such as download folder or use getUriForDownloadedFile to get your downloaded file directory. for more info go to [this page](https://developer.android.com/reference/android/app/DownloadManager.Request.html#setDestinationInExternalFilesDir(android.content.Context, java.lang.String, java.lang.String)).

Nearest location returns null

I have an arraylist of locations marker. I have this method to sort the list. I then assign the first lat and long in the list to a variable so I can get the nearest store.
Collections.sort(marker, new Comparator<Markers>() {
#Override
public int compare(Markers a, Markers b) {
Location locationA = new Location("point A");
locationA.setLatitude(a.latitude);
locationA.setLongitude(a.longitude);
Location locationB = new Location("point B");
locationB.setLatitude(b.latitude);
locationB.setLongitude(b.longitude);
float distanceOne = currPos.distanceTo(locationA);
float distanceTwo = currPos.distanceTo(locationB);
return Float.compare(distanceOne, distanceTwo);
}
});
nearest = new LatLng(marker.get(0).latitude, marker.get(0).longitude);
However, when I use the nearest variable to put a marker on it, no marker was posted on the map. When I checked the value of nearest it does not contain any coordinates. Am I missing on something? Here is my whole MapsActivity.java:
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback,
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener,
LocationListener {
private GoogleMap mMap;
GoogleApiClient mGoogleApiClient;
Location mLastLocation;
Marker mCurrLocationMarker;
LocationRequest mLocationRequest;
private static LatLng nearest;
private static Location currPos;
#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);
fetchData();
}
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
mMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
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);
mMap.addMarker(new MarkerOptions()
.position(new LatLng(nearest.latitude,nearest.longitude))
.title("Nearest Store"));
}
}
else {
buildGoogleApiClient();
mMap.setMyLocationEnabled(true);
}
}
public void fetchData() {
new AsyncTask() {
private List<Markers> marker;
private JSONArray jsonArray;
#Override
protected void onPreExecute() {
super.onPreExecute();
marker = new ArrayList();
}
#Override
protected Object doInBackground(Object[] objects) {
return null;
}
#Override
protected void onPostExecute(Object o) {
super.onPostExecute(o);
try {
Intent mapsIntent = getIntent();
String jSonArray = mapsIntent.getStringExtra("jsonArray");
jsonArray = new JSONArray(jSonArray);
for(int i = 0; i < jsonArray.length(); i++) {
Markers branch = new Markers();
branch.latitude = Float.parseFloat(jsonArray.getJSONObject(i).getString("latitude"));
branch.longitude = Float.parseFloat(jsonArray.getJSONObject(i).getString("longitude"));
marker.add(branch);
}
Collections.sort(marker, new Comparator<Markers>() {
#Override
public int compare(Markers a, Markers b) {
Location locationA = new Location("point A");
locationA.setLatitude(a.latitude);
locationA.setLongitude(a.longitude);
Location locationB = new Location("point B");
locationB.setLatitude(b.latitude);
locationB.setLongitude(b.longitude);
float distanceOne = currPos.distanceTo(locationA);
float distanceTwo = currPos.distanceTo(locationB);
return Float.compare(distanceOne, distanceTwo);
}
});
nearest = new LatLng(marker.get(0).latitude, marker.get(0).longitude);
} catch (Exception ex) {
Log.d("Error", ex.toString());
}
}
}.execute();
}
private class Markers {
public float latitude;
public float longitude;
}
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());
currPos = location;
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.position(latLng);
markerOptions.title("Current Location");
markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_MAGENTA));
mCurrLocationMarker = mMap.addMarker(markerOptions);
mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
mMap.animateCamera(CameraUpdateFactory.zoomTo(11));
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) {
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 void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
switch (requestCode) {
case MY_PERMISSIONS_REQUEST_LOCATION: {
if (grantResults.length > 0
&& grantResults[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, "Permission Denied", Toast.LENGTH_LONG).show();
}
return;
}
}
}
}

There's a race condition between your two threads.
mapFragment.getMapAsync(this); // thread 1
fetchData(); // thread 2
Thread 1 needs Thread 2 to finish and assign nearest to work. Otherwise it is null
You could call mapFragment.getMapAsync(MapsActivity.this); at the end of onPostExecute, but...
Your Asynctask is pointless at the moment because no data is being fetched by a background task.

how to show markers list in google map

I tried this code ,but it shows me current position of the user
public class DeveloperAdress extends Fragment implements OnMapReadyCallback, GoogleApiClient.ConnectionCallbacks,GoogleApiClient.OnConnectionFailedListener,LocationListener {
private static final String var= Config.PORT_CONX;
private static final String TAG = DeveloperAdress.class.getSimpleName();
private static final String url =var+ "listeAddress";
private ProgressDialog pDialog;
private GoogleMap mMap;
GoogleApiClient mGoogleApiClient;
Location mLastLocation;
LocationRequest mLocationRequest;
Marker mCurrLocationMarker;
List<Address> adresss;
public static final int MY_PERMISSIONS_REQUEST_LOCATION = 99;
public DeveloperAdress() {
}
public static DeveloperAdress newInstance() {
DeveloperAdress fragment = new DeveloperAdress();
Bundle args = new Bundle();
fragment.setArguments(args);
return fragment;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
adresss=getAllAdresss();
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view= inflater.inflate(R.layout.developer_adress, container, false);
SupportMapFragment mapFragment = (SupportMapFragment) getChildFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
for(Address address:addresss) {
// mMap.addMarker(new MarkerOptions().position(new LatLng(address.getLatitude(), address.getLongitude())));
markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_MAGENTA));
Marker markert = mMap.addMarker(markerOptions);
}
return view;
}
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
mMap.setMapType(GoogleMap.MAP_TYPE_TERRAIN);
mMap.getUiSettings().setZoomControlsEnabled(true);
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (ContextCompat.checkSelfPermission(getContext(), 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(getContext()).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(getContext(), 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);
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) {
}
#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.
if (ContextCompat.checkSelfPermission(getContext(),
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(getContext(), "permission denied", Toast.LENGTH_LONG).show();
}
return;
}
}
}
public boolean checkLocationPermission(){
if (ContextCompat.checkSelfPermission(getContext(),
Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
// Asking user if explanation is needed
if (ActivityCompat.shouldShowRequestPermissionRationale(getActivity(),
Manifest.permission.ACCESS_FINE_LOCATION)) {
ActivityCompat.requestPermissions(getActivity(),
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
MY_PERMISSIONS_REQUEST_LOCATION);
} else {
ActivityCompat.requestPermissions(getActivity(),
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
MY_PERMISSIONS_REQUEST_LOCATION);
}
return false;
} else {
return true;
}
}
public List<Address> getAllAddresss(){
final List<Address> addresss = new ArrayList<Address>();
JsonArrayRequest prodReq = new JsonArrayRequest(url,
new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray response) {
Log.d(TAG, response.toString());
hidePDialog();
// Parsing json
for (int i = 0; i < response.length(); i++) {
try {
JSONObject obj = response.getJSONObject(i);
Address address = new Address();
address.setId(obj.getInt("id"));
address.setLongitude(obj.getDouble("longitude"));
address.setLatitude(obj.getDouble("latitude"));
addresss.add(address);
} catch (JSONException e) {
e.printStackTrace();
}
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "connexion impossible !!");
hidePDialog();
}
});
AppController.getInstance().addToRequestQueue(prodReq);
return addresss;
}
private void hidePDialog() {
if (pDialog != null) {
pDialog.dismiss();
pDialog = null;
}
}
#Override
public void onResume() {
super.onResume();
}
}

Try this:
googleMap.addMarker(new MarkerOptions()
.position(new LatLng(28.7750, 77.4183))
.title("Marker in India")
.icon(BitmapDescriptorFactory
.defaultMarker(BitmapDescriptorFactory.HUE_GREEN))
.snippet("kochi").draggable(true));
Your onMapReady(GoogleMap googleMap) is not being called.
You need to call getMapAsync on the map fragment to set the OnMapReadyCallback
From the documentation
public void getMapAsync (OnMapReadyCallback callback)
Sets a callback object which will be triggered when the GoogleMap
instance is ready to be used.
Add this code at the end of your onCreate function:
MapFragment mapFragment = (MapFragment) getFragmentManager().findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
Use the Marker Class
An icon placed at a particular point on the map's surface. A marker icon is drawn oriented against the device's screen rather than the map's surface; i.e., it will not necessarily change orientation due to map rotations, tilting, or zooming.
A marker has the following properties:
Anchor
The point on the image that will be placed at the LatLng position of the marker. This defaults to 50% from the left of the image and at the bottom of the image.
Position
The LatLng value for the marker's position on the map. You can change this value at any time if you want to move the marker.
Title
A text string that's displayed in an info window when the user taps the marker. You can change this value at any time.
Snippet
Additional text that's displayed below the title. You can change this value at any time.
Icon
A bitmap that's displayed for the marker. If the icon is left unset, a default icon is displayed. You can specify an alternative coloring of the default icon using defaultMarker(float). You can't change the icon once you've created the marker.
Drag Status
If you want to allow the user to drag the marker, set this property to true. You can change this value at any time. The default is true.
Visibility
By default, the marker is visible. To make the marker invisible, set this property to false. You can change this value at any time.

https://github.com/anandvardhan1991/GoogleMaps-Web-API-Demo
Check this Demo for Google Web Places API.

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

Using JSON for Google Maps: Markers not Showing up - android

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