Wie man den Marker an der aktuellen Position des Benutzers hinzufügt und den aktuellen lokalen Ortsnamen im Titel anzeigt?

Question

Ich möchte App für den aktuellen GPS-Ortungs-Tracker erstellen. Nun, was ich will das Wie kann ich Marker auf Benutzer aktuelle Position hinzufügen und auch ich möchte aktuellen lokalen Ortsnamen als Titel anzeigen. Wie kann ich das erreichen?

Aktivität Code -

public class MyActivity extends FragmentActivity implements LocationListener { 

    GoogleMap googleMap; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     //show error dialog if GoolglePlayServices not available 
     if (!isGooglePlayServicesAvailable()) { 
      finish(); 
     } 
     setContentView(R.layout.activity_my); 
     SupportMapFragment supportMapFragment = 
       (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.googleMap); 
     googleMap = supportMapFragment.getMap(); 
     googleMap.setMyLocationEnabled(true); 
     LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE); 
     Criteria criteria = new Criteria(); 
     String bestProvider = locationManager.getBestProvider(criteria, true); 
     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) { 
      // 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; 
     } 
     Location location = locationManager.getLastKnownLocation(bestProvider); 
     if (location != null) { 
      onLocationChanged(location); 
     } 
     locationManager.requestLocationUpdates(bestProvider, 20000, 0, this); 
    } 

    @Override 
    public void onLocationChanged(Location location) { 
     TextView locationTv = (TextView) findViewById(R.id.latlongLocation); 
     double latitude = location.getLatitude(); 
     double longitude = location.getLongitude(); 
     LatLng latLng = new LatLng(latitude, longitude); 
     googleMap.addMarker(new MarkerOptions().position(latLng).icon(BitmapDescriptorFactory.fromResource(R.mipmap.ic_launcher))); 
     googleMap.moveCamera(CameraUpdateFactory.newLatLng(latLng)); 
     googleMap.animateCamera(CameraUpdateFactory.zoomTo(15)); 
     locationTv.setText("Latitude:" + latitude + ", Longitude:" + longitude); 
    } 

    @Override 
    public void onProviderDisabled(String provider) { 
     // TODO Auto-generated method stub 
    } 

    @Override 
    public void onProviderEnabled(String provider) { 
     // TODO Auto-generated method stub 
    } 

    @Override 
    public void onStatusChanged(String provider, int status, Bundle extras) { 
     // TODO Auto-generated method stub 
    } 

    private boolean isGooglePlayServicesAvailable() { 
     int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this); 
     if (ConnectionResult.SUCCESS == status) { 
      return true; 
     } else { 
      GooglePlayServicesUtil.getErrorDialog(status, this, 0).show(); 
      return false; 
     } 
    } 
} 

XML-Datei Code -

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:context=".MyActivity"> 

    <fragment 
     android:id="@+id/googleMap" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     class="com.google.android.gms.maps.SupportMapFragment" 
     android:layout_above="@+id/latlongLocation" /> 

    <TextView 
     android:id="@+id/latlongLocation" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:gravity="bottom" 
     android:layout_alignParentBottom="true" 
     android:background="#ff058fff" 
     android:paddingTop="5dp" 
     android:paddingBottom="5dp" 
     android:textColor="#ffffffff" 
     android:paddingLeft="5dp" 
     android:paddingRight="5dp" /> 
</RelativeLayout> 

Answer 1

Code unten in Ihrer OnLocationChanged Methode hinzufügen:

mMap.addMarker(new MarkerOptions().position(new LatLng(Double.valueOf(geoPoint[0]), Double.valueOf(geoPoint[1]))).title("Place1").icon(BitmapDescriptorFactory.fromResource(R.drawable.pin_icon))); 

kann es helfen Ihnen.

Und Für vollständige Projekt kann u untenstehenden Link verweisen: Voll Projekt in github.com/josuadas/LocationDemo

Answer 2

Neben @kgsharathkumar answer Sie Name des lokalen Ort mit diesem Code erhalten können:

private String getAddressOfLatLng() { 
    String addressStr = ""; 
    List<Address> addresses = null; 
    Geocoder geocoder = new Geocoder(this.getActivity(), Locale.US); 
    try { 
     addresses = geocoder.getFromLocation(mLastSeenMarker.getPosition().latitude, 
       mLastSeenMarker.getPosition().longitude, 1); 

     if (addresses != null & addresses.size() > 0) { 
      Address address = addresses.get(0); 
      for (int i = 0; i < address.getMaxAddressLineIndex() - 1; i++) { 
       if (!TextUtils.isEmpty(address.getAddressLine(i))) { 
        addressStr += address.getAddressLine(i) + "\n"; 
       } 
      } 

      int lastIndex = address.getMaxAddressLineIndex() - 1; 
      if (lastIndex >= 0 && lastIndex < address.getMaxAddressLineIndex()) { 
       addressStr += address.getAddressLine(lastIndex); 
      } 

     } else { 
      addressStr = getString(R.string.unknown); 
     } 

    } catch (IOException e) { 
     addressStr = getString(R.string.unknown); 
    } 
    return addressStr; 
} 

und es verwenden, indem Sie auf diese Weise:

Marker marker = mGoogleMap.addMarker(new MarkerOptions() 
        .position(new LatLng(latitude, longitude)) 
        .title(getAddressOfLatLng(latitude, longitude)) 
        .icon(<your_marker_icon>)); 

Answer 3

Try this 
        markerOptions = new MarkerOptions(); 
        userCurrentLat = "Your latitude"; 
        userCurrentLong = "Your longitude"; 
        googleMap.getUiSettings().setMapToolbarEnabled(false); 
        googleMap.setMyLocationEnabled(true); 
        Geocoder geo = new Geocoder(ActivityMapFullScreenView.this); 
        List<Address> addresses = null; 
        addresses = geo.getFromLocation(Double.parseDouble(userCurrentLat), Double.parseDouble(userCurrentLong), 1); 
        if (addresses.isEmpty()) { 
         Toast.makeText(context, "Waiting for Location", Toast.LENGTH_SHORT).show(); 
        } 
        if (addresses.size() > 0) { 
         if (addresses.get(0).getAddressLine(3) == null) { 
          currentAddress = addresses.get(0).getAddressLine(0) + " " + addresses.get(0).getAddressLine(1) + " " + addresses.get(0).getAddressLine(2); 
         } else if (addresses.get(0).getAddressLine(2) == null) { 
          currentAddress = addresses.get(0).getAddressLine(0) + " " + addresses.get(0).getAddressLine(1); 
         } else { 
          currentAddress = addresses.get(0).getAddressLine(0) + " " + addresses.get(0).getAddressLine(1) + " " + addresses.get(0).getAddressLine(2).replace("null", "") + " " + addresses.get(0).getAddressLine(3); 
         } 
         // yourtextfieldname.setText(addresses.get(0).getFeatureName() + ", " + addresses.get(0).getLocality() +", " + addresses.get(0).getAdminArea() + ", " + addresses.get(0).getCountryName()); 
         //String address = addresses.get(0).getSubLocality(); 
        } 
        currentAddress.replace("null", ""); 
        LatLng latLng = new LatLng(Double.parseDouble(userCurrentLat), Double.parseDouble(userCurrentLong)); 
        googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(latLng, 16)); 
        markerOptions.position(latLng); 

        googleMap.setInfoWindowAdapter(new CustomInfoWindowAdapter(ActivityMapFullScreenView.this)); 
        googleMap.addMarker(markerOptions.title(getResources().getString(R.string.share_this_loc)).icon(BitmapDescriptorFactory.fromResource(R.drawable.map_green_pin))).showInfoWindow(); 
    enter code here