I'm developing an app for android with google maps. The problem is that when I activate "setMyLocationEnabled" on the google map, it sets my location to Hong Kong but I'm in Portugal. But the location given by the locationManager gives me my correct location. Is there a way to define that my location is the location of the locationManager on the "setMyLocationEnabled"?
This gives me my correct location:
Criteria criteria = new Criteria();
Location myLocation = locationManager.getLastKnownLocation(locationManager.getBestProvider(criteria, false));
Lat = myLocation.getLatitude();
Long = myLocation.getLongitude();
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 20000, 1, this);
But this:
googleMap.setMyLocationEnabled(true);
says that I'm in Hong Kong when I actualy am in Portugal.
How can I define that the "setMyLocationEnabled" has to start on the same position as the locationManager and put the blue dot on that position?
In using My Location layer, please note as stated,
Before enabling the My Location layer, you must ensure that you have the required runtime location permission.
Either the coarse location permission:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.myapp" >
...
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
...
</manifest>
Or the fine location permission:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.myapp" >
...
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
...
</manifest>
However, as discussed in Making Your App Location-Aware
The Google Play services location APIs are preferred over the Android framework location APIs (android.location) as a way of adding location awareness to your app. If you are currently using the Android framework location APIs, you are strongly encouraged to switch to the Google Play services location APIs as soon as possible.
Related
My Android app has to launch gmaps on Wear OS
Uri gmmIntentUri = Uri.parse("https://www.google.com/maps/search/?api=1&query=" +Uri.encode( string));
Intent mapIntent = new Intent(ACTION_VIEW, gmmIntentUri);
// mapIntent.setPackage("com.google.android.apps.maps");
if (mapIntent.resolveActivity(activity.getPackageManager()) != null) {
activity.startActivity(mapIntent);
}
but I get an error that says Permission denial... It wants
com.google.android.wearable.READ_SETTINGS
If I put this
<uses-permission android:name="com.google.android.wearable.READ_SETTINGS" />
in the manifest then I get the same kind of error.
I am not able to ask for permission programmatically with something similar to this
if (ContextCompat.checkSelfPermission(activity, Manifest.permission.READ_SETTINGS)
== PackageManager.PERMISSION_GRANTED) {
Log.d("permissions","granted");
} else {
// Show rationale and request permission.
ActivityCompat.requestPermissions(activity,
new String[]{Manifest.permission.READ_SETTINGS},
MY_LOCATION_REQUEST_CODE);
}
because that constant is not found. It is not useful to write the complete com.google.android.wearable.READ_SETTINGS string.
I do not understand why READ_SETTINGS is needed.
How to solve?
Google Maps on wearOS cannot handle Uri.parse("https://www.google.com/maps/search/?api=1&query=" +Uri.encode( string)) or in this format as suggested in documentation Uri gmmIntentUri = Uri.parse("geo:0,0?q=1600 Amphitheatre Parkway, Mountain+View, California"). While the same intent on phone launches Google Maps and shows you a list of suggestions.
My guess is that the Maps app on wearOS is meant to be lightweight , you can only search for something in a particular city or region like this:
// Searches for 'Main Street' near San Francisco
Uri gmmIntentUri = Uri.parse("geo:37.7749,-122.4194?q=101+main+street");
The below link shows examples of Google Maps intents to use on Android : https://developers.google.com/maps/documentation/urls/android-intents
For the error:
com.google.android.wearable.READ_SETTINGS
You don't need to add this in permissions, but check whether your wear app manifest has this :
<uses-feature android:name="android.hardware.type.watch" />
In my android app I am using the osmdroid framework. In the framework I am using the MyLocationNewOverlay() which contains a method to show the current location on the map.
My problem
The LocationListener in the framework seems not to use the network provider and only wants to locate me with GPS (which works fine, but only if I am outside).
Is there a standard way to use a LocationProvider that also works with the network provider if gps is not available?
AndroidManifest.xml
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
Pretty standard to init my location overlay:
private void initMyLocationNewOverlay() {
myLocationNewOverlay = new MyLocationNewOverlay(new GpsMyLocationProvider(context), mapView);
myLocationNewOverlay.enableMyLocation();
mapView.getOverlays().add(myLocationNewOverlay);
}
Thanks in advance!
The problem is that the GpsMyLocationProvider only adds the GPS_Provider to its sources (you can see that in the constructor). To add the network provider use the addLocationSource as following.
private void initMyLocationNewOverlay() {
GpsMyLocationProvider provider = new GpsMyLocationProvider(context);
provider.addLocationSource(LocationManager.NETWORK_PROVIDER);
myLocationNewOverlay = new MyLocationNewOverlay(provider, mapView);
myLocationNewOverlay.enableMyLocation();
mapView.getOverlays().add(myLocationNewOverlay);
}
Trying to implement google map API in my android project and getting the warning error that is under my java code
GoogleMap gMap;
gMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
LatLng Jamaica = new LatLng(18.1155173, -77.2760026);
gMap.moveCamera(CameraUpdateFactory.newLatLngZoom(Jamaica, 13));
gMap.addMarker(new MarkerOptions()
.title("Jamaica")
.snippet("The greatest country in the world")
.position(Jamaica));
gMap.setMyLocationEnabled(true);
Logcat:
03-18 12:45:00.140: W/ActivityThread(10477): ClassLoader.loadClass: The class loader returned by Thread.getContextClassLoader() may fail for processes that host multiple applications. You should explicitly specify a context class loader. For example: Thread.setContextClassLoader(getClass().getClassLoader());
Run `cmd` and genereate a new "SHA1" key.
Browse to https://code.google.com/apis/console/?noredirect `API Console` page.
Replace the old "ShA1" with the new "sha1" key.
Then replace your new map key.
Your problem solved. I also had this problem. (I only changed my map key)
Did you add
<uses-library android:name="com.google.android.maps" />
to your manifest under the application tag?
The blue dot/arrow isnt showing on my map. Everything else works fine. Am i missing some permissions?
Included the Java Class, Manifest and layout XML.
private void setUpMap(int satelliteMode, LatLng startPoint, float zoomLevel) {
mapView.getUiSettings().setZoomControlsEnabled(false);
//mapView.getUiSettings().setMyLocationButtonEnabled(false);
mapView.setMapType(satelliteMode);
mapView.setMyLocationEnabled(true);
mapView.moveCamera(CameraUpdateFactory.newLatLngZoom(startPoint, zoomLevel));
}
xml:
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/mapview"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.SupportMapFragment"/>
manifest:
<permission
android:name="com.example.project.MAPS_RECEIVE"
android:protectionLevel="signature"/>
<uses-permission android:name="com.example.project.MAPS_RECEIVE"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-feature android:glEsVersion="0x00020000" android:required="true"/>
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#android:style/Theme.NoTitleBar.Fullscreen" >
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="API_KEY"/>
You'd see that clicking the 'my location' button creates the blue dot at your current location. Using the location manager to track location updates and moving the camera accordingly allows you to track the user too, without clicking the button. See a snippet below.
LocationListener ll = new LocationListener() {
#Override
public void onLocationChanged(Location arg0) {
Toast.makeText(getBaseContext(), "Moved to "+arg0.toString(), Toast.LENGTH_LONG).show();
CameraPosition cp = new CameraPosition.Builder()
.target(new LatLng(arg0.getLatitude(),arg0.getLongitude()))
.zoom(12)
.build();
map.animateCamera(CameraUpdateFactory.newCameraPosition(cp));
}
}
For some reason it just worked. Went away for lunch and left the app on. When i returned the blue arrow was drawn on the map. Not on the right location though but it was on the map. So the posted code of mine works. It only needs an update from the location manager.
FWIW, i have the exact same problem as the original post on a Samsung Galaxy Tab 2.
However, i do NOT have the issue on an Archos 101G9.
If I reboot, load my app with Google Maps v2 and click the 'go to my location' button in the top right, the Archos goes directly to my current location but the SGT2 does nothing.
If I manually get my current location using location manager and animate the map to it then it navigates. However clicking the 'go to my location' button still does nothing.
Getting a location fix using GPS seems to fix the issue.
EDIT:
On the SGT2 the blue location dot appears only with a GPS fix, however the Archos displays the blue dot with a mobile data/wifi fix.
Hi in you FragmentActivity add implements LocationListener
private LocationManager locationManager;
In onCreate(Bundle savedInstanceState).... add
locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
Criteria locationCriteria = new Criteria();
locationCriteria.setAccuracy(Criteria.ACCURACY_FINE); locationManager.requestLocationUpdates(locationManager.getBestProvider(locationCriteria, true), 1L, 2F, this);
and implemented methos to LocationListener ;)
What I want is to display a simple offline map using OpenStreetMap. I cannot find in the web the right tools to create map tiles and use it to display a map in Android. I have downloaded different resources but it seems that I don't have any idea where to start. I want to integrate images from OpenStreetMap using JOSM but i don't know if I can use it on Android.
Can I use Mapnik? Your help will a great thank you.
I'm currently developing (my first) Android application using the OpenStreetMap (OSM) API, so while I can't help you with the JSOM, I can try to help with the OSM part:
Assuming that you want to create a new activity in your android application that simply displays a OSM map, you might start with something like this:
package example.stackoverflow.osmdroid;
import android.app.Activity;
import android.os.Bundle;
import org.osmdroid.tileprovider.tilesource.TileSourceFactory;
import org.osmdroid.util.GeoPoint;
import org.osmdroid.views.MapView;
public class YourMap extends Activity {
// The MapView variable:
private MapView m_mapView;
// Default map zoom level:
private int MAP_DEFAULT_ZOOM = 15;
// Default map Latitude:
private double MAP_DEFAULT_LATITUDE = 38.535350;
// Default map Longitude:
private double MAP_DEFAULT_LONGITUDE = -121.753807;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Specify the XML layout to use:
setContentView(R.layout.osm_map);
// Find the MapView controller in that layout:
m_mapView = (MapView) findViewById(R.id.mapview);
// Setup the mapView controller:
m_mapView.setBuiltInZoomControls(true);
m_mapView.setMultiTouchControls(true);
m_mapView.setClickable(true);
m_mapView.setUseDataConnection(false);
m_mapView.getController().setZoom(MAP_DEFAULT_ZOOM);
m_mapView.getController().setCenter(
new GeoPoint(MAP_DEFAULT_LATITUDE, MAP_DEFAULT_LONGITUDE));
m_mapView.setTileSource(TileSourceFactory.MAPNIK);
} // end onCreate()
} // end class YourMap
Where your osm_map.xml layout may look something like this:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<org.osmdroid.views.MapView
android:id="#+id/mapview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:enabled="true"
android:clickable="true"
/>
</RelativeLayout>
As for the actual map tiles, there is a really cool program called Mobile Atlas Creator, which allows you to generate the necessary map tiles for the offline Android map implemented above.
Once you have the application installed, and you want to create a new atlas, you'll be asked to select your "desired altas format." When this pops up, select "Osmdroid zip."
Once everything loads, select a region on the map that you would like to create tiles for, select the zoom levels you want tiles for, and hit the "Add Selection" button in the column on the left, followed by "Create Atlas."
Oh, and depending on the source, you may need to check the "Create/Adjust Map tiles" checkbox to force the tiles to be exported as PNGs -- does anyone know if it's possible to use JPG with OSM?
Once the ZIP has been generated, I renamed it to "Mapnik.zip" and moved it to a newly created folder called "tiles" in my Eclipse Android project workspace. In order to get it working, I also had to open the zip file, and rename the top level folder from something like "Google Earth" (depending on the map source you used), to "Mapnik," in order for the tile to display in my Android application.
In order to actually load the tiles onto your phone, however, you'll need to use the ADB tool from the terminal. In your ADB tool directory, you'll want to run something like this (each line is a new command):
./adb shell rm -r /sdcard/osmdroid/
./adb shell mkdir /sdcard/osmdroi/
./adb push ~/path/to/your/mapnik.zip /sdcard/osmdroid
Depending on the size of the map and the speed of the phone's memory bus, this last step may take a several minutes to an hour to complete. Once done, your map should work -- I hope!
As I mentioned, this is the first time I've used the OSM API, so I'm by no means an expert on it, and I can only comment on what worked for me.
Hope this will help you get started!
EDIT:
I didn't have a chance to actually run the code that I wrote up yesterday, so I didn't catch a few of the errors. I just created a new project in Eclipse, dumped my code in there, fixed a few things and got it up and running. All changes that I made are reflected in the code above! I forgot several of the basic import statements, and I forgot to add permissions to the manifest.xml file.
The last few lines of my manifest.xml now look like this:
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
</manifest>
And you also might want to add this to the manifest, although certainly not critical:
<supports-screens
android:anyDensity="true"
android:resizeable="false"
android:largeScreens="true"
android:normalScreens="true"
/>
Add this right after the <uses-sdk ... /> part.
Furthermore, be sure to import the following two JAR libraries:
osmdroid-android-3.0.3.jar // Or whatever version you're using...
and
slf4j-android-1.5.8.jar // Or whatever the latest version is...
Without this last JAR, my code kept crashing until I remembered to include it.
Make sure to modify the default coordinates so that they point to a location that you actually have map tiles for, otherwise you're not going to see much of anything, aside from a white canvas.
Sorry for not running the code on my end first!
Here is a step by step solution:
In brief:
1- You must download map tiles using Mobile Atlas Creator. I have explained the steps HERE
2- Move the resulting zip-file to /mnt/sdcard/osmdroid/ on your device.
3- Adding osmdroid-android-XXX.jar and slf4j-android-1.5.8.jar into build path your project
4- Adding MapView: You can add a MapView to your xml layout
<org.osmdroid.views.MapView
android:id="#+id/mapview"
android:layout_width="match_parent"
android:layout_height="match_parent"
tilesource="Mapnik"
/>
Or create a MapView programmatically:
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
mResourceProxy = new ResourceProxyImpl(inflater.getContext().getApplicationContext());
mMapView = new MapView(inflater.getContext(), 256, mResourceProxy);
return mMapView;
}
Don't forget to add these permissions to your Manifest:
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
This is a good Sample Project.
Hope it Helps ;)
Important
As #Scai mentioned: recently Open Street Map announced that this tool is not good and had some problems:
This tool results in heavy traffic for the OSM tile servers and is likely to be blocked.
Please don't use it.
Alternatively to map tiles you can also use vector data for your offline map, for example mapsforge or the Mapbox Android SDK. For more information consult the OSM wiki about offline OSM and Android libraries.