Picking location with map pin using Google maps in Android

Google Maps API has provided awesome functionalities for android users, Like Search places, Pick address by tapping on map, Distance and time duration between two coordinates on the map.

In this blog, we are going to see how we can get the address of a location by dragging the map marker to that location.

So, let’s start with the first step. Declaring the dependencies related to maps.

implementation 'com.google.android.gms:play-services-maps:17.0.0'
implementation 'com.google.android.gms:play-services-location:17.0.0'

1 2	implementation 'com.google.android.gms:play-services-maps:17.0.0' implementation 'com.google.android.gms:play-services-location:17.0.0'

Now, let’s move to the layout changes. We would need to add a map fragment in the layout file according to the design needed.

<fragment
    android:id="@+id/map"
    android:name="com.google.android.gms.maps.SupportMapFragment"
    android:layout_width="match_parent"
    android:layout_height="400dp"
    tools:context=".MapsActivity" />

<fragment

android:id="@+id/map"

android:name="com.google.android.gms.maps.SupportMapFragment"

android:layout_width="match_parent"

android:layout_height="400dp"

tools:context=".MapsActivity" />

Then we need to declare the permissions related to the location and also need to check the permission at run time in devices above or equal to Android M.

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
    if (mContext.checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && mContext.checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
        requestPermissions(new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, MAP_PIN_LOCATION_REQUEST_CODE);
        return;
    }
}

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {

if (mContext.checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && mContext.checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {

requestPermissions(new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, MAP_PIN_LOCATION_REQUEST_CODE);

return;

}

Now obtain SupportMapFragment and get notified when the map is ready by overriding OnMapReadyCallback

SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
mapFragment.getMapAsync(this);

1 2	SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map); mapFragment.getMapAsync(this);

Now let’s override the onMapReady function

@Override
public void onMapReady(GoogleMap googleMap) {
    mMap = googleMap;

    // Add a marker in Sydney and move the camera
    LatLng sydney = new LatLng(-34, 151);
    mMap.addMarker(new MarkerOptions().position(sydney).draggable(true).title("Marker in Sydney"));
    mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));

    // Enable the zoom controls for the map
    mMap.getUiSettings().setZoomControlsEnabled(true);
}

@Override

public void onMapReady(GoogleMap googleMap) {

mMap = googleMap;

// Add a marker in Sydney and move the camera

LatLng sydney = new LatLng(-34, 151);

mMap.addMarker(new MarkerOptions().position(sydney).draggable(true).title("Marker in Sydney"));

mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));

// Enable the zoom controls for the map

mMap.getUiSettings().setZoomControlsEnabled(true);

}

In the next step, we will be adding a listener for the marker dragging. You can add this in onMapReady function. And with this, we can get the Address object when the marker dragging is ended by the user in onMarkerDragEnd method.

googleMap.setOnMarkerDragListener(new GoogleMap.OnMarkerDragListener() {
    @Override
    public void onMarkerDragStart(Marker marker) {
    }

    @Override
    public void onMarkerDrag(Marker marker) {
    }

    @Override
    public void onMarkerDragEnd(Marker marker) {
        LatLng latLng = marker.getPosition();
        Geocoder geocoder = new Geocoder(getContext(), Locale.getDefault());
        try {
            android.location.Address address = geocoder.getFromLocation(latLng.latitude, latLng.longitude, 1).get(0);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
});

googleMap.setOnMarkerDragListener(new GoogleMap.OnMarkerDragListener() {

@Override

public void onMarkerDragStart(Marker marker) {

}

@Override

public void onMarkerDrag(Marker marker) {

}

@Override

public void onMarkerDragEnd(Marker marker) {

LatLng latLng = marker.getPosition();

Geocoder geocoder = new Geocoder(getContext(), Locale.getDefault());

try {

android.location.Address address = geocoder.getFromLocation(latLng.latitude, latLng.longitude, 1).get(0);

} catch (IOException e) {

e.printStackTrace();

}

});

By following these steps you can get an address of a location by dragging the marker to that location.

References

rishabh sharma 25 February 2020

. . .

Discuss on Helpdesk

3 comments

adnan Feb 25, 2020 at 12:18 am

I am unable to drag the marker. can you help me how to drag the marker.
Can you help ASAP.

rishabh sharma (Moderator) Feb 25, 2020 at 9:59 am
Hello, you just need to enable the marker property. Check the below example:

Example:
static final LatLng PERTH = new LatLng(-31.90, 115.86);
Marker perth = mMap.addMarker(new MarkerOptions().position(PERTH).draggable(true));

Reference: https://developers.google.com/maps/documentation/android-sdk/marker#make_a_marker_draggable

Reply

sadek May 3, 2020 at 6:31 am

awesome thank you very much

Picking location with map pin using Google maps in Android

References

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