Ram Ram - 20 days ago 7
Android Question

Google Map driving directions between two locations in my own application

I was working on Google maps, I need Google map driving direction between two locations(my current location and destination location) in my own application I don't want to open any google maps application. so please suggest me how to do this. up to now i have completed integrating google maps, zoom to my current location, placing a marker in destination lat-long.

my java file:

public class GoogleMapActivity extends FragmentActivity implements
OnMapReadyCallback, GoogleMap.OnMarkerClickListener, GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {

Location mLastLocation;
GoogleApiClient mGoogleApiClient;
private GoogleMap mMap;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_google_map);

SupportMapFragment mapFragment =
(SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
Log.d("Tag", "in onc control in try");
buildGoogleApiClient();
}

protected void onStart() {
mGoogleApiClient.connect();
super.onStart();
}

protected void onStop() {
mGoogleApiClient.disconnect();
super.onStop();
}

protected synchronized void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
mGoogleApiClient.connect();
}
@Override
public void onConnected(@Nullable Bundle bundle) {
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(
mGoogleApiClient);
if (mLastLocation != null) {
Log.d("TAG","lat"+mLastLocation.getLatitude());
Log.d("TAG","lng"+mLastLocation.getLongitude());
ToastHelper.blueToast(getApplicationContext(), "location is " + mLastLocation.getLatitude() + " " + mLastLocation.getLongitude());
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(mLastLocation.getLatitude(), mLastLocation.getLongitude()), 12.0f));
LatLng destination = new LatLng(14.880499, 79.988847);
mMap.addMarker(new MarkerOptions().position(destination).title("Destination"));
}
else {
Log.d("TAG","mLastLocation is null");
}
}

@Override
public void onConnectionSuspended(int i) {
}

/**
* Called when the map is ready.
*/
@Override
public void onMapReady(GoogleMap map) {
mMap = map;
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
mMap.setMyLocationEnabled(true);
}
/**
* Called when the user clicks a marker.
*/
@Override
public boolean onMarkerClick(final Marker marker) {
// Retrieve the data from the marker.
// 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(@NonNull ConnectionResult connectionResult) {

}


}

Ram Ram
Answer

Finally got the result: use this API link: http://maps.googleapis.com/maps/api/directions/json?origin=(origin)&destination=(destination)

where it will return JSON as a response which contains latitudes and longitudes, and store them in an array and draw polylines using those lat-long points in google maps

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