I've used MapTiler to create some tiles that I'm trying to overlay onto a Google map with android and not having much luck. The Android documentation is pretty sparse on this topic but I've done what I think should work, yet I'm not seeing the tiles when I zoom in to the correct level. I'm trying to make the overlay happen in the onMapReady() callback, should I be doing that somewhere else?
Here's the code I have for the onMapReady method:
#Override
public void onMapReady(GoogleMap googleMap) {
googleMap.setMapType(GoogleMap.MAP_TYPE_SATELLITE);
googleMap.setMyLocationEnabled(true);
CameraPosition cameraPosition = new CameraPosition.Builder().target(new LatLng(44.481705,-114.9378269)).zoom(16).build();
googleMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
mTileOverlay = googleMap.addTileOverlay(new TileOverlayOptions()
.tileProvider((new UrlTileProvider(256, 256) {
#Override
public URL getTileUrl(int x, int y, int zoom) {
String s = "http://www.example.com/tiles/"+zoom+"/"+x+"/"+y+".png";
// added this logging to see what the url is
Log.d("home", s);
try {
return new URL(s);
} catch (MalformedURLException e) {
throw new AssertionError(e);
}
}
})));
}
any ideas here?
TIA
EDIT: I've adding some logging to see what 's' (my url) is returning, and it's returning the correct url and my server is serving up the tiles correctly from that url but still not seeing anything on the map in android.
It turns out I had a toast in my getTileUrl() method that was preventing the images from being returned. When I removed that, the tiles were served correctly.
Related
I'm stuck on code to proceed next step in my android project. I severely try to find a sample code but couldn't find it yet. This is code that I have to add the KML layer to a google map in android studio API 29.i want to create a new field in KML layer attribute then field select and its data save to the Firebase in real-time. And also retrieve save data to show on the map as pop-out window. Please give me a sample code or link to resolve.
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
try {
KmlLayer layer = new KmlLayer(mMap,R.raw.testkml, getApplicationContext());
layer.addLayerToMap();
} catch (XmlPullParserException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
// Add a marker in Sydney and move the camera
LatLng homagama = new LatLng(6.8440, 80.0024);
// mMap.addMarker(new MarkerOptions().position(homagama).title("Homagama"));
// mMap.moveCamera(CameraUpdateFactory.newLatLng(homagama));
float zoomLevel = (float) 13.0;
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(homagama, zoomLevel));
You can access KML properties by utilizing the getProperty() function. You can also call hasProperty() to check if it exists. You can check the sample on Google Maps KML documentation: https://developers.google.com/maps/documentation/android-sdk/utility/kml#properties
I hope this helps!
I have been trying to display a shapefile using openmap library. On click of a button on first activity, the application goes to the second activity (which is also the second page) but then it suddenly crashes.
I ran the debugger and realised that mapFragment variable was still null, it was getting the value from findFragmentById.
I ultimately intend to display a shapefile on the second page of my application.
public class ShapeFileParser extends AppCompatActivity implements OnMapReadyCallback {
GoogleMap mMap;
ShapeFile shapeFile;
File file;
public void setUpMap() {
try {
org.apache.commons.io.FileUtils.copyInputStreamToFile((ShapeFileParser.this.getAssets().open("healthsites.shp")), file);
} catch (IOException e) {
e.printStackTrace();
}
try {
shapeFile = new ShapeFile(file);
} catch (IOException e) {
e.printStackTrace();
}
try {
for (ESRIRecord esriRecord = shapeFile.getNextRecord(); esriRecord!=null; esriRecord = shapeFile.getNextRecord()){
String shapeTypeStr = ShapeUtils.getStringForType(esriRecord.getShapeType());
Log.v("myapp","shape type = " + esriRecord.getRecordNumber() + "-" + shapeTypeStr);
if (shapeTypeStr.equals("POLYGON")) {
// cast type after checking the type
ESRIPolygonRecord polyRec = (ESRIPolygonRecord)esriRecord;
Log.v("myapp","number of polygon objects = " + polyRec.polygons.length);
for (int i=0; i<polyRec.polygons.length; i++){
// read for a few layers
ESRIPoly.ESRIFloatPoly poly = (ESRIPoly.ESRIFloatPoly)polyRec.polygons[i];
PolygonOptions polygonOptions = new PolygonOptions();
polygonOptions.strokeColor(Color.argb(150,200,0,0));
polygonOptions.fillColor(Color.argb(150,0,0,150));
polygonOptions.strokeWidth(2.0f);
Log.v("myapp","Points in the polygon = " + poly.nPoints);
for (int j=0; j<poly.nPoints; j++){
//Log.v("myapp",poly.getY(j) + "," + poly.getX(j));
polygonOptions.add(new LatLng(poly.getY(j), poly.getX(j)));
}
mMap.addPolygon(polygonOptions);
Log.v("myapp","polygon added");
}
}
else {
Log.v("myapp","error polygon not found (type = " + esriRecord.getShapeType() + ")");
}
}
} catch (IOException e1) {
e1.printStackTrace();
}
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
initializeMap();
}
private void initializeMap() {
if (mMap == null) {
SupportMapFragment mapFrag = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
// mapFrag is null on checking with the debugger
mapFrag.getMapAsync(this);
}
}
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
setUpMap();
}
}
This is my XML file:
<?xml version="1.0" encoding="utf-8"?>
<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=".ShapeFileParser" >
<fragment
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.SupportMapFragment" />
</RelativeLayout>
I am just trying an example to render a shape file onto the second page but I feel I am going no where since last two days. Kindly suggest some input if any.
I am a newbie in android dev, please be patient with me. Many thanks!
The OpenMap Library is used for Java Swing and JFrame applications and can't be used in an Android application as far as I can tell. The Google Map SDK has everything you need to display Maps in an Android Application including getting device location, displaying Places info, setting map markers, polylines, and polygons. Getting location updates in the backgroud, etc... To set it up, create a new Maps Activity from the Gallery. It will generate all the needed files for you and give you a list of instructions to get an API Key so that Maps can be used in your app. Here is a question explaining the security of your api key that I answered a while back. Google Maps Docs explains all the basic functionality of how to get Maps setup. I would recommend you visit some YouTube Tutorials on how to set Maps up in your Android application.
<--EDIT-->
Here is an answer I found on Stack Overflow from about two years ago. It doesn't really use the OpenMap Libray, but it's a workaround. You can pull ShapeFile data and use it in Google Maps Polygon, Polyline, and LatLng classes and display those on a map in your android application.
The polyline which we will draw on the map is not similar to the polyline of google's map application.It is giving a nice 3d feel,can we draw the polyline similar to that polyline?.Is it possible to draw using 9-patch images?.Anyone please help?.
Hello this would help you, it helped me.
Firstly make the google api server key from Google developer account then add a dependency for google direction.
compile 'com.akexorcist:googledirectionlibrary:1.0.4'
then it check that feasible and shortest route between LatLongs.
use this code to check route is available or not.
GoogleDirection.withServerKey(getResources().getString(R.string.SERVER_KEY))
.from(SourceLatlng)
.to(DestinationLatlng)
.execute(new DirectionCallback() {
#Override
public void onDirectionSuccess(Direction direction, String message) {
if (direction.isOK()) {
DrawRoute(direction, message,SourceLatlng,DestinationLatlng);
} else {
//selectedRawLine = ERROR;
}
}
#Override
public void onDirectionFailure(Throwable t) {
t.printStackTrace();
}
});
Using this we can find that route is feasible or not
private void DrawRoute(Direction direction, String message,LatLng sourceLatlng,LatLng DestinationLng) {
for (Route route : direction.getRouteList()) {
PolylineOptions polyoptions = new PolylineOptions();
polyoptions.color(getResources().getColor(R.color.blackcolor));
polyoptions.width(5);
polyoptions.addAll(route.getOverviewPolyline().getPointList());
poly = googleMap.addPolyline(polyoptions);
poly.setClickable(true);
}
LatLngBounds.Builder latLngBuilder = new LatLngBounds.Builder();
if(sourceLatlng!=null)
latLngBuilder.include(sourceLatlng);
if(DestinationLng!=null)
latLngBuilder.include(DestinationLng);
try {
LatLngBounds bounds = latLngBuilder.build();
CameraUpdate cu = CameraUpdateFactory.newLatLngBounds(bounds,
UiHelper.dpToPixel(getActivity(), 135));
googleMap.animateCamera(cu);
} catch (Exception e) {
e.printStackTrace();
}
}
Using this code we make polyline between two latLongs ...
I am following a tutorial here https://code.google.com/p/osmbonuspack/wiki/Tutorial_1 but I have encountered an error that it doesn't show the correct route correctly. It just shows a straight line from Point A to Point B.
What I want to achieve is to show the correct route from these points. I'm guessing the error is that it doesn't recognize any nodes to go through.
A similar question has been also asked and I am assuming I have the same problem if I haven't explained my question well.
Similar question can be found here: OSMDroid Routing problems when following a tutorial
Here is a part of my code using RoadManager
Here is a part of the code.
try {
//get current longlat
gpsLocator.getLocation();
cur_loc_lat =gpsLocator.getLatitude();
cur_loc_long =gpsLocator.getLongitude();
} catch (Exception e) {
// TODO: handle exception
}
//--- Create Another Overlay for multi marker
anotherOverlayItemArray = new ArrayList<OverlayItem>();
anotherOverlayItemArray.add(new OverlayItem(
"UST", "UST", new GeoPoint( testlat, testlong)));
//--- Create Another Overlay for multi marker
anotherOverlayItemArray.add(new OverlayItem(
locDefine[0], "UST", new GeoPoint( sel_latitude, sel_longitude)));
ItemizedIconOverlay<OverlayItem> anotherItemizedIconOverlay
= new ItemizedIconOverlay<OverlayItem>(
TomWalks.this, anotherOverlayItemArray, myOnItemGestureListener);
myOpenMapView.getOverlays().add(anotherItemizedIconOverlay);
//---
//Add Scale Bar
ScaleBarOverlay myScaleBarOverlay = new ScaleBarOverlay(TomWalks.this);
myOpenMapView.getOverlays().add(myScaleBarOverlay);
try {
//1 Routing via road manager
RoadManager roadManager = new MapQuestRoadManager();
roadManager.addRequestOption("routeType=pedestrian");
/*
roadManager.addRequestOption("units=m");
roadManager.addRequestOption("narrativeType=text");
roadManager.addRequestOption("shapeFormat=raw");
roadManager.addRequestOption("direction=0");
*/
//Then, retrieve the road between your start and end point:
ArrayList<GeoPoint> waypoints = new ArrayList<GeoPoint>();
waypoints.add(new GeoPoint(testlat, testlong));
waypoints.add(new GeoPoint(sel_latitude,sel_longitude)); //end point
Road road = roadManager.getRoad(waypoints);
// then, build an overlay with the route shape:
PathOverlay roadOverlay = RoadManager.buildRoadOverlay(road, myOpenMapView.getContext());
roadOverlay.setColor(Color.GREEN);
//Add Route Overlays into map
myOpenMapView.getOverlays().add(roadOverlay);
myOpenMapView.invalidate();//refesh map
final ArrayList<ExtendedOverlayItem> roadItems =
new ArrayList<ExtendedOverlayItem>();
ItemizedOverlayWithBubble<ExtendedOverlayItem> roadNodes =
new ItemizedOverlayWithBubble<ExtendedOverlayItem>(TomWalks.this, roadItems, myOpenMapView);
myOpenMapView.getOverlays().add(roadNodes);
myOpenMapView.invalidate();//refesh map
int nodesize=road.mNodes.size();
double length = road.mLength;
Drawable marker = getResources().getDrawable(R.drawable.marker_node);
Toast.makeText(TomWalks.this, " Distance : " + length + " Nodes : "+nodesize ,Toast.LENGTH_SHORT).show();
for (int i=0; i<road.mNodes.size(); i++)
{
RoadNode node = road.mNodes.get(i);
ExtendedOverlayItem nodeMarker = new ExtendedOverlayItem("Step "+i, "", node.mLocation, TomWalks.this);
nodeMarker.setMarkerHotspot(OverlayItem.HotspotPlace.CENTER);
nodeMarker.setMarker(marker);
roadNodes.addItem(nodeMarker);
nodeMarker.setDescription(node.mInstructions);
nodeMarker.setSubDescription(road.getLengthDurationText(node.mLength, node.mDuration));
Drawable icon = getResources().getDrawable(R.drawable.marker_node);
nodeMarker.setImage(icon);
}//end for
myOpenMapView.getOverlays().add(roadNodes);
myOpenMapView.invalidate();//refesh map
} catch (Exception e) {
// TODO: handle exception
Toast.makeText(TomWalks.this,e.getMessage(),Toast.LENGTH_SHORT).show();
}
myMapController.setCenter(new GeoPoint( sel_latitude, sel_longitude));
} catch (Exception e) {
// TODO: handle exception
}
}
}
}//===================================================================================================
Let's try to provide a complete answer to this quite frequent question.
Basically, when you get the "straight line", it means that the RoadManager got an error.
So, first of all, in your code, you should check the result of getRoad, this way:
if (road.mStatus != Road.STATUS_OK){
//handle error... warn the user, etc.
}
Now, where this error is coming from?
=> You must search in the logcat. You should find the full url that has been sent, and probably a stacktrace about the error.
I strongly recommend that you copy/paste this full url in a browser , and check the result.
Here are the typical errors, by decreasing probability:
1) You didnt' read carefully the "Important note" at the beginning of the Tutorial_0, and you are trying to do a Network call in the main thread, with an SDK >= 3.0.
=> Read this "Important note".
2) You asked for a route that is not possible (really not possible, or because of weird positions, or because of setting unsupported options).
=> This is easy to check by copy/pasting the full url in a web browser, and looking at the answer.
3) Your device has no network connectivity.
4) The routing service changed its API (this happened, more than once...).
=> Could be checked by copy/pasting the full url in a browser.
In this case, raise an Issue in OSMBonusPack project, so that we can take it into account ASAP.
5) The routing service is down.
=> Easy to check by copy/pasting the full url in a browser.
I think it is better to use AsyncTasks in this case:
/**
* Async task to get the road in a separate thread.
*/
private class UpdateRoadTask extends AsyncTask<Object, Void, Road> {
protected Road doInBackground(Object... params) {
#SuppressWarnings("unchecked")
ArrayList<GeoPoint> waypoints = (ArrayList<GeoPoint>)params[0];
RoadManager roadManager = new OSRMRoadManager();
return roadManager.getRoad(waypoints);
}
#Override
protected void onPostExecute(Road result) {
road = result;
// showing distance and duration of the road
Toast.makeText(getActivity(), "distance="+road.mLength, Toast.LENGTH_LONG).show();
Toast.makeText(getActivity(), "durée="+road.mDuration, Toast.LENGTH_LONG).show();
if(road.mStatus != Road.STATUS_OK)
Toast.makeText(getActivity(), "Error when loading the road - status="+road.mStatus, Toast.LENGTH_SHORT).show();
Polyline roadOverlay = RoadManager.buildRoadOverlay(road,getActivity());
map.getOverlays().add(roadOverlay);
map.invalidate();
//updateUIWithRoad(result);
}
}
then call it new UpdateRoadTask().execute(waypoints);
new Thread(new Runnable()
{
public void run()
{
RoadManager roadManager = new OSRMRoadManager();
ArrayList<GeoPoint> waypoints = new ArrayList<GeoPoint>();
GeoPoint startPoint = new GeoPoint(source_lat, source_longi);
waypoints.add(startPoint);
GeoPoint endPoint = new GeoPoint(desti_lat,desti_longi);
waypoints.add(endPoint);
try
{
road = roadManager.getRoad(waypoints);
}
catch (Exception e)
{
e.printStackTrace();
}
runOnUiThread(new Runnable()
{
public void run()
{
if (road.mStatus != Road.STATUS_OK)
{
//handle error... warn the user, etc.
}
Polyline roadOverlay = RoadManager.buildRoadOverlay(road, Color.RED, 8, context);
map.getOverlays().add(roadOverlay);
}
});
}
}).start();
And i am use two jar files 1)slf4j-android-1.5.8.jar and 2)osmdroid-android-4.2.jar and osmbonuspack library.
A strange error I found regarding this is as follows:
Firstly I mention following line of code for taking directions for the vehicle "BIKE"
((OSRMRoadManager) roadManager).setMean(OSRMRoadManager.MEAN_BY_BIKE);
Now when it was first called it follows the following URL:
https://routing.openstreetmap.de/routed-car/route/v1/driving/68.8889678000,23.2151582000;73.1808008000,22.3110728000?alternatives=false&overview=full&steps=true
Now when calling the second time{same MEAN_BY_BIKE}, it is following this URL:
:https://routing.openstreetmap.de/routed-bike/route/v1/driving/68.8889678000,23.2151582000;73.1808008000,22.3110728000?alternatives=false&overview=full&steps=true
So the issue is that no response is for the "routed-bike" and it is calling automatically itself when called for second time.
So as a solution I changed my code to the following:
((OSRMRoadManager) roadManager).setMean(OSRMRoadManager.MEAN_BY_CAR);
You can check your LogCat for the same.
I'm working on integrating Google Maps into the app I'm working on and I've had a rather unpleasant time doing it thus far. Regardless, I finally got a SupportMapFragment displaying a map and set a location and zoom level.
Here is the functional bits of my code thus far:
#Override
public void onActivityCreated( Bundle savedInstanceState ) {
super.onActivityCreated( savedInstanceState );
Location location = BundleChecker.getExtraOrThrow( KEY_LOCATION, new Bundle[] { savedInstanceState, getArguments() } );
setLocation( location );
if ( checkGooglePlayServicesStatus() == ConnectionResult.SUCCESS ) {
setMapFragment( new SupportMapFragment() );
getActivity().getSupportFragmentManager().beginTransaction().add( R.id.location_detail_mapFrame, getMapFragment() ).commit();
}
populateAddress();
attachButtonListeners();
Runnable initMap = new Runnable() {
#Override
public void run() {
if ( checkGooglePlayServicesStatus() == ConnectionResult.SUCCESS ) {
try {
GoogleMap map = getMapFragment().getMap();
LatLng latLng = getLocation().getAddress().getLatLng( getActivity() );
CameraUpdate update = CameraUpdateFactory.newLatLngZoom( latLng, DEFAULT_MAP_ZOOM );
map.animateCamera( update );
}
catch (IOException e) {
Log.e( TAG, e.getMessage(), e );
Toast.makeText( getActivity(), "Unable to find location", Toast.LENGTH_SHORT ).show();
}
}
}
};
Handler handler = new Handler();
handler.postDelayed( initMap, 200 );
}
Also, I wrote a simple convenience method to get a LatLng from my Address model that you may criticize as well:
/*
* Convenience method to easily check if there is a valid lat & lng in this address
*/
public boolean hasLatLng() {
return getLatitude() != null && getLongitude() != null;
}
/*
* Convenience method for use with Google Maps API
*/
public LatLng getLatLng( Context context ) throws IOException {
LatLng latLng = null;
if ( hasLatLng() ) {
latLng = new LatLng( getLatitude(), getLongitude() );
}
else {
String locationString = getStreet() + ", " + AddressUtil.makeCityStateZipString( this );
Geocoder geoCoder = new Geocoder( context );
try {
List<android.location.Address> matches = geoCoder.getFromLocationName( locationString, 2 );
if ( matches != null && matches.size() > 0 ) {
double lat = matches.get( 0 ).getLatitude();
double lng = matches.get( 0 ).getLongitude();
latLng = new LatLng( lat, lng );
}
}
catch (IOException e) {
throw new IOException( e );
}
}
return latLng;
}
I'm aware that this code is not ideal and needs to be refactored. This is my first time working with Google Maps so please feel free to offer suggestions as to how I might do that as well. I experienced a lot of problems when trying to use the MapFragment as a in my layout XML, so I'm creating it programmatically.
The heart of the matter:
I was getting some bogus address data from the staging server and this resulted in the Address#getLatLng method returning null which caused an exception when calling CameraUpdateFactory.newLatLngZoom. After I got this exception, I was no longer able to get map data from Google. The map fragment is blank now and messages are displayed in logcat:
05-21 18:11:42.903: I/Google Maps Android API(15747): Failed to contact Google servers. Another attempt will be made when connectivity is established.
05-21 18:11:43.093: E/Google Maps Android API(15747): Failed to load map. Error contacting Google servers. This is probably an authentication issue (but could be due to network errors).
I have created a new api key and replaced the current one in my manifest with no change. The only changes I had made to the above code were to account for a null LatLng and I have since undone those changes in a pointless attempt to get my code back to a functional state.
Additionally, to make things a bit stranger, I built the sample maps project that is included with the Google Play Services Extras and it works perfectly (has a separate API key, btw).
What might I have done wrong here? Am I overlooking something obvious?
This problem is usually derived from a problem in referencing google-play-service library.
Take a look at this blog post I wrote on how to integrate Google Maps in your application, especially the first 3 steps:
Google Maps API V2
another cause of this could be that you haven't configured the Google API Console properly, so I suggest you to take a look at this guide as well:
Google Maps API V2 Key
another reason that may cause this is if you have some kind of problem in your permissions in the manifest file. You can look at the first guide for the needed permissions as well.
Use Something like this:
Update the google play services in the SDK.
Manually uninstall the App from device and restart the device.
i have tried it and its going perfectly bro
Also do one thing get the new api key to edited the new sh1 code from https://code.google.com/apis/console/
you can get your sh1 code from window- preference-android-buid
Making Google maps work is a Googlemare. This worked for me:
-Update Google play services with the Android Manager
-Make a fresh apikey with: Sha1 keystore (Window->preferences->Android->Build) and project package name. Do this at: https://code.google.com/apis/console/
Somebody had changed the package name and was foiling the app!!
Try this before you need anger management therapy thanks to google maps.