How to open standard Google Map application from my application

Question

Once user presses button in my application  I would like to open standard Google Map application and to show particular location  How can I do it   without using com google android maps MapView

User · Answer

This is written in Kotlin  it will open the maps app if it s found and place the point and let you start the trip     val gmmIntentUri   Uri parse  http   maps google com maps daddr     adapter getItemAt position  latitud         adapter getItemAt position  longitud          val mapIntent   Intent Intent ACTION VIEW  gmmIntentUri          mapIntent setPackage  com google android apps maps           if  mapIntent resolveActivity requireActivity   packageManager     null                startActivity mapIntent              Replace requireActivity   with your Context

User · Answer

I have a sample app where I prepare the intent and just pass the CITY NAME in the intent to the maps marker activity which eventually calculates longitude and latitude by Geocoder using CITY NAME   Below is the code snippet of starting the maps marker activity and the complete MapsMarkerActivity    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        else if  id    R id action refresh            Log d APP TAG   onOptionsItemSelected Refresh selected            new MainActivityFragment FetchWeatherTask   execute CITY  FORECAS DAYS           return true        else if  id    R id action map            Log d APP TAG   onOptionsItemSelected Map selected            Intent intent   new Intent this  MapsMarkerActivity class           intent putExtra  CITY NAME   CITY           startActivity intent           return true             return super onOptionsItemSelected item         public class MapsMarkerActivity extends AppCompatActivity         implements OnMapReadyCallback        private String cityName            private double longitude       private double latitude       static final int numberOptions   10       String    optionArray   new String numberOptions         Override     protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState              Retrieve the content view that renders the map          setContentView R layout activity map              Get the SupportMapFragment and request notification            when the map is ready to be used          SupportMapFragment mapFragment    SupportMapFragment  getSupportFragmentManager                    findFragmentById R id map           mapFragment getMapAsync this               Test whether geocoder is present on platform         if Geocoder isPresent                 cityName   getIntent   getStringExtra  CITY NAME                geocodeLocation cityName             else               String noGoGeo    FAILURE  No Geocoder on this platform                Toast makeText this  noGoGeo  Toast LENGTH LONG  show                return                                  Manipulates the map when it s available         The API invokes this callback 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 receives a prompt to install        Play services inside the SupportMapFragment  The API invokes this method after the user has        installed Google Play services and returned to the app               Override     public void onMapReady GoogleMap googleMap               Add a marker in Sydney  Australia             and move the map s camera to the same location          LatLng sydney   new LatLng latitude  longitude              If cityName is not available then use            Default Location          String markerDisplay    Default Location           if  cityName    null                  amp  amp  cityName length    gt  0                markerDisplay    Marker in     cityName                    googleMap addMarker new MarkerOptions   position sydney                   title markerDisplay            googleMap moveCamera CameraUpdateFactory newLatLng sydney                          Method to geocode location passed as string  e g    Pentagon    which        places the corresponding latitude and longitude in the variables lat and lon                 param placeName             private void geocodeLocation String placeName               Following adapted from Conder and Darcey  pp 321 ff          Geocoder gcoder   new Geocoder this               Note that the Geocoder uses synchronous network access  so in a serious application            it would be best to put it on a background thread to prevent blocking the main UI if network            access is slow  Here we are just giving an example of how to use it so  for simplicity  we            don t put it on a separate thread   See the class RouteMapper in this package for an example            of making a network access on a background thread  Geocoding is implemented by a backend            that is not part of the core Android framework  so we use the static method            Geocoder isPresent   to test for presence of the required backend on the given platform           try              List lt Address gt  results   null              if Geocoder isPresent                     results   gcoder getFromLocationName placeName  numberOptions                 else                   Log i MainActivity APP TAG   No Geocoder found                    return                            Iterator lt Address gt  locations   results iterator                String raw     nRaw String  n               String country              int opCount   0              while locations hasNext                     Address location   locations next                    if opCount    0  amp  amp  location    null                       latitude   location getLatitude                        longitude   location getLongitude                                      country   location getCountryName                    if country    null                        country                         else                       country           country                                    raw    location   n                   optionArray opCount    location getAddressLine 0                                location getAddressLine 1  country   n                   opCount                                  Log the returned data             Log d MainActivity APP TAG  raw               Log d MainActivity APP TAG    nOptions  n                for int i 0  i lt opCount  i                     Log i MainActivity APP TAG       i 1       optionArray i                              Log d MainActivity APP TAG   latitude     latitude     longitude     longitude             catch  Exception e               Log d MainActivity APP TAG   I O Failure  do you have a network connection   e                       Links expire so i have pasted complete code above but just in case if you would like to see complete code then its available at   https   github com gosaliajigar CSC519 tree master CSC519 HW4 89753

User · Answer

You should create an Intent object with a geo-URI   String uri   String format Locale ENGLISH   geo  f  f   latitude  longitude   Intent intent   new Intent Intent ACTION VIEW  Uri parse uri    context startActivity intent     If you want to specify an address  you should use another form of geo-URI  geo 0 0 q address   reference   https   developer android com guide components intents-common html Maps

User · Answer

Using String format will help but you must be care full with the locale  In germany float will be separates with in comma instead an point    Using String format  geo  f  f  5 1 2 1   on locale english the result will be  geo 5 1 2 1  but with locale german you will get  geo 5 1 2 1    You should use the English locale to prevent this behavior    String uri   String format Locale ENGLISH   geo  f  f   latitude  longitude   Intent intent   new Intent Intent ACTION VIEW  Uri parse uri    context startActivity intent     To set an label to the geo point you can extend your geo uri by using       but be carefull with this the geo-uri is still under develoment  http   tools ietf org html draft-mayrhofer-geo-uri-00  String uri   String format Locale ENGLISH   geo  f  f z  d amp q  f  f   s                                latitude  longitude  zoom  latitude  longitude  label   Intent intent   new Intent Intent ACTION VIEW  Uri parse uri    context startActivity intent

User · Answer

To go to location WITH PIN on it  use   String uri    http   maps google com maps q loc     destinationLatitude         destinationLongitude  Intent intent   new Intent Intent ACTION VIEW  Uri parse uri    intent setPackage  com google android apps maps    startActivity intent     for without pin  use this in uri    String uri    geo     destinationLatitude         destinationLongitude

User · Answer

You can also simply use http   maps google com maps as your URI  String uri    http   maps google com maps saddr     sourceLatitude         sourceLongitude     amp daddr     destinationLatitude         destinationLongitude  Intent intent   new Intent Intent ACTION VIEW  Uri parse uri    startActivity intent     or you can make sure that the Google Maps app only is used  this stops the intent filter  dialog  from appearing  by using   intent setPackage  com google android apps maps      like so   String uri    http   maps google com maps saddr     sourceLatitude         sourceLongitude     amp daddr     destinationLatitude         destinationLongitude  Intent intent   new Intent Intent ACTION VIEW  Uri parse uri    intent setPackage  com google android apps maps    startActivity intent     or you can add labels to the locations by adding a string inside parentheses after each set of coordinates like so   String uri    http   maps google com maps saddr     sourceLatitude         sourceLongitude          Home Sweet Home       amp daddr     destinationLatitude         destinationLongitude           Where the party is at         Intent intent   new Intent Intent ACTION VIEW  Uri parse uri    intent setPackage  com google android apps maps    startActivity intent     To use the users current location as the starting point  unfortunately I haven t found a way to label the current location  then just drop off the saddr parameter as follows   String uri    http   maps google com maps daddr     destinationLatitude         destinationLongitude           Where the party is at         Intent intent   new Intent Intent ACTION VIEW  Uri parse uri    intent setPackage  com google android apps maps    startActivity intent     For completeness  if the user doesn t have the maps app installed then it s going to be a good idea to catch the ActivityNotFoundException  as  TonyQ states  then we can start the activity again without the maps app restriction  we can be pretty sure that we will never get to the Toast at the end since an internet browser is a valid application to launch this url scheme too           String uri    http   maps google com maps daddr     12f         2f           Where the party is at                 Intent intent   new Intent Intent ACTION VIEW  Uri parse uri            intent setPackage  com google android apps maps            try                       startActivity intent                     catch ActivityNotFoundException ex                        try                               Intent unrestrictedIntent   new Intent Intent ACTION VIEW  Uri parse uri                    startActivity unrestrictedIntent                             catch ActivityNotFoundException innerEx                                Toast makeText this   Please install a maps application   Toast LENGTH LONG  show                              EDIT   For directions  a navigation intent is now supported with google navigation  Uri navigationIntentUri   Uri parse  google navigation q     12f         2f   Intent mapIntent   new Intent Intent ACTION VIEW  navigationIntentUri   mapIntent setPackage  com google android apps maps    startActivity mapIntent

User · Answer

Also  you can use external app launcher  https   pub dev packages external app launcher To know if is installed  await LaunchApp isAppInstalled androidPackageName   com google android maps MapView   iosUrlScheme   comgooglemaps        To open  await LaunchApp openApp                      androidPackageName   com google android maps MapView                       iosUrlScheme   comgooglemaps

User · Answer

Check this page from google    http   developer android com guide appendix g-app-intents html  You can use a URI of the form   geo latitude longitude   to open Google map viewer and point it to a location

User · Answer

Sometimes if there s no any application associated with geo  protocal   you could use try-catch to get the ActivityNotFoundException to handle it   It happens when you use some emulator like androVM which is not installed google map by default

User · Answer

You can also use the code snippet below  with this manner the existence of google maps is checked before the intent is started    Uri gmmIntentUri   Uri parse String format Locale ENGLISH  geo  f  f   latitude  longitude    Intent mapIntent   new Intent Intent ACTION VIEW  gmmIntentUri   mapIntent setPackage  com google android apps maps    if  mapIntent resolveActivity getPackageManager       null        startActivity mapIntent       Reference  https   developers google com maps documentation android-api intents

[android] How to open standard Google Map application from my application?

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