Develop Reference

use of osmdroid for a map base application

i am trying to write a map base application via osmdroid and i want when the user opens the application, can see googlemaps online.
i write codes in Eclipse but i can't see google maps when i run my application on my virtual device
this is my Androidmanifest file:
<uses-sdk android:minSdkVersion="10" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_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.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_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-feature android:name="android.hardware.location.network" />
<uses-feature android:name="android.hardware.location.gps" />
<uses-feature android:name="android.hardware.wifi" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.osm.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<meta-data
android:name="com.google.android.gms.version"
android:value="myapikey" />
</application>
</manifest>
it is my codes:
import org.osmdroid.tileprovider.tilesource.TileSourceFactory;
import org.osmdroid.util.GeoPoint;
import org.osmdroid.views.MapView;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
MapView mapView=new MapView(this, 256);
// mapView mapView = new m(this, 256);
mapView.setClickable(true);
mapView.setBuiltInZoomControls(true);
mapView.getController().setZoom(14);
mapView.getController().setCenter(new GeoPoint(34.638293,50.876312));
setContentView(mapView);
mapView.setUseDataConnection(false);
mapView.setTileSource(TileSourceFactory.MAPNIK);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}

Try to implement this:
private void setMapView() {
if (mMap != null) {
mMap.setMyLocationEnabled(false);
}
final com.google.android.maps.MapView mapView = new com.google.android.maps.MapView(this, ManifestUtil.retrieveKey(this, "com.google.android.geo.API_KEY"));
setContentView(mapView);
mMap = MapFactory.getMap(mapView);
final Position position = new Position(52.370816, 9.735936); // Hannover
position.setZoomLevel(14);
mMap.setPosition(position);
mMap.setMyLocationEnabled(false);
addMarkers();
addPolyline();
mMap.setOnCameraChangeListener(new OnCameraChangeListener() {
#Override
public void onCameraChange(final IPosition position) {
Log.d(Constants.LOGTAG, "onCameraChange");
}
});
}
this is from osmdroid sample. As you can see you need google GEO API key to obtain google map tiles to your app. Maybe it would be better solution to use different maps then google maps. This is the official documentation which lists all "out of the box" map sources you can use https://github.com/osmdroid/osmdroid/wiki/Map-Sources

Android google maps api v2 its blank on device and shows on emulator

like the title says I'm using google maps api v2 and it works on my avd but not on my real device (on my device its just blank)
I found many questions on this same topic but none of those were helpful to my case
any ideas? oh I almost forgot when I run it with the emulator the only error that I get its
"failed to find provider info for com.google.settings"
I already tried with getting a new api key, keystone, uninstalling the app from my device before installing it again... dont know what else.
thank you for at least reading this
EDIT: Im using a Lg g2 dont know if it helps
EDIT2: Manifest, mapa.java and xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="Login.cyclingcenter"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="16"
android:targetSdkVersion="16" />
<uses-permission android:name="android.permission.ViBRATE"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="Swipe"
></activity>
<activity
android:name="Login"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<!-- Goolge Maps API Key -->
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="AIzaSyBtOk02dBY98C7S8BILmMyLLkMbUh8-jLs" />
<meta-data
android:name="com.google.android.gms.version"
android:value="6171000" />
</application>
package Login.cyclingcenter;
import android.location.Location;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.google.android.gms.maps.CameraUpdate;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.GoogleMap.OnMyLocationChangeListener;
import com.google.android.gms.maps.MapView;
import com.google.android.gms.maps.model.LatLng;
public class Mapa extends Fragment {
MapView mMapView;
private GoogleMap googleMap;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View mapa = inflater.inflate(R.layout.fragment_map, container, false);
mMapView = (MapView) mapa.findViewById(R.id.mapView);
mMapView.onCreate(savedInstanceState);
establecerMap();
return mapa;
}
public void establecerMap(){
if(googleMap==null){
googleMap = mMapView.getMap();
}
else{
//configuración mapa
configuraMap();
}
}
public void configuraMap(){
//vista normal, puede ser satelite e hibrido
googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
//establezco mi posicion en el mapa
googleMap.setMyLocationEnabled(true);
// Asigno un nivel de zoom
CameraUpdate ZoomCam = CameraUpdateFactory.zoomTo(14);
googleMap.animateCamera(ZoomCam);
// Establezco un listener para ver cuando cambio de posicion
googleMap.setOnMyLocationChangeListener(new OnMyLocationChangeListener() {
public void onMyLocationChange(Location pos) {
// TODO Auto-generated method stub
// Extraigo la Lat y Lon del Listener
double lat = pos.getLatitude();
double lon = pos.getLongitude();
// Muevo la camara a mi posicion
CameraUpdate cam = CameraUpdateFactory.newLatLng(new LatLng(
lat, lon));
googleMap.moveCamera(cam);}});
}
#Override
public void onResume(){
super.onResume();
mMapView.onResume();
}
#Override
public void onPause(){
super.onPause();
mMapView.onPause();
}
#Override
public void onDestroy(){
super.onDestroy();
mMapView.onDestroy();
}
#Override
public void onLowMemory(){
super.onLowMemory();
mMapView.onLowMemory();
}
}
XML
<?xml version="1.0" encoding="utf-8"?>
<com.google.android.gms.maps.MapView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/mapView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:apiKey="AIzaSyBtOk02dBY98C7S8BILmMyLLkMbUh8-jLs"/>

Are you sure, your app is using needed permissions? Like this:
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<!-- The following two permissions are not required to use
Google Maps Android API v2, but are recommended. -->
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
Following this basic guide.
If your app working on AVD but not on device - this can be reason.

I found the solution and it was that Google uses an api key for debug and one for release and since I was using my own device it is consider as a release even though I'm just testing (google doesnt know that haha), that's it its just another key.

Google Maps Android API V2 showing current location with marker(where am i in google android maps api v2)

I am beginner in android , i am developing an android app for displaying my current location on google maps.But as i run my application it display a message "Unfortunately stopped" on emulator as well as physical device.
i am attaching my code .plz have a look.
pls help me ....i am not able to resolve this
thanks
MainActivity.java
package com.example.mapp;
import android.app.Dialog;
import android.location.Location;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.view.Menu;
import android.widget.TextView;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.GoogleMap.OnMyLocationChangeListener;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
public class MainActivity extends FragmentActivity implements OnMyLocationChangeListener {
GoogleMap googlemap;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
int status=GooglePlayServicesUtil.isGooglePlayServicesAvailable(getBaseContext());
if(status!=ConnectionResult.SUCCESS)
{
int requestCode=10;
Dialog dialog=GooglePlayServicesUtil.getErrorDialog(status,this, requestCode);
dialog.show();
}
else
{
SupportMapFragment fm = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map));
googlemap=fm.getMap();
googlemap.setMyLocationEnabled(true);
googlemap.setOnMyLocationChangeListener(this);
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public void onMyLocationChange(Location location) {
TextView tvLocation=(TextView)findViewById(R.id.textview1);
double latitude=location.getLatitude();
double longitude=location.getLongitude();
LatLng latLng=new LatLng(latitude,longitude);
googlemap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
googlemap.animateCamera(CameraUpdateFactory.zoomTo(15));
tvLocation.setText("Latitude:"+latitude+",Longitude:"+longitude);
}
}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.mapp"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<permission android:name="com.example.mapp.permission.MAP_RECIEVE" android:protectionLevel="signature"/>
<uses-permission android:name="com.example.mapp.permission.MAP_RECIEVE"/>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<!-- External storage for caching. -->
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.mapp.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="MY_API_KEY" />
</application>
</manifest>
*activity_main.xml*
<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=".MainActivity" >
<TextView
android:id="#+id/textview1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<fragment
class="com.google.android.gms.maps.SupportMapFragment"
android:id="#+id/map"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignTop="#+id/textview1"
/>
</RelativeLayout>

Add the following code inside application tag
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />

I know to show your current location, you must use a real device

Google map not show any thing in map

i am showing a map in activity ... but when i run app on device it does not show any thing , it show just white screen and zoom in zoom out options... MAP key is right .. thanks ..
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.edxample.finalmap"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<permission android:name="com.edxample.finalmap.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-permission android:name="com.edxample.finalmap.permission.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" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.edxample.finalmap.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="AIzaSyBL8ANi3jKkM0tF65C_Qus2_JgWRzClhfU" />
</application>
</manifest>
activity_main.xml
<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=".MainActivity" >
<fragment
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:map="http://schemas.andoid.com/apk/es-auto"
android:name="com.google.android.gms.maps.SupportMapFragment" />
</RelativeLayout>
MainActivity
package com.edxample.finalmap;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.SupportMapFragment;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.view.Menu;
import android.widget.Toast;
public class MainActivity extends FragmentActivity {
private GoogleMap googleMap;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if(check())
{
setContentView(R.layout.activity_main);
Toast.makeText(this, "In Google play service.", Toast.LENGTH_LONG).show();
initFun();
}
else
{
Toast.makeText(this, "Google play service not available.", Toast.LENGTH_LONG).show();
}
}
private Boolean check()
{
int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
if(status==ConnectionResult.SUCCESS)
{
return true;
}
return false;
}
public void initFun()
{
SupportMapFragment sp = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
googleMap = sp.getMap();
googleMap.setMyLocationEnabled(true);
googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}

Use your main packet name for generate key.
For example:
im my project, google map v2 is in com.ftravelbook.googlemapv2
but when generate key, you must use your main packet name (com.ftravelbook)
here are some screenshots:

I was also having the same problem because i have generated key by making on google maps api v2 on.It is used for web not for mobile.
For android device you have to make a google maps android api v2 on and generate your key

Is your map API key for your debugbuilds or your release builds? The key is based on your keystore, which is different between your debug and release build. Your release key for google maps won't work if you're debugging your app, and vice versa.

location button not pointing me to my location in google map api v2

google map is displying perfectly and googleplayservices are also present,
but my location button on top right corner is not working in google maps api v2 my wifi and gps both are on.Kindly help.
i am testing it on my handset.
I dont know why its not working
mainActivity.java
package com.example.mapexample;
import android.app.Dialog;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.util.Log;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.SupportMapFragment;
public class MainActivity extends FragmentActivity{
final int RQS_GooglePlayServices = 1;
private GoogleMap myMap;
private LocationManager locationManager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Do a null check to confirm that we have not already instantiated the map.
if (myMap == null) {
myMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();
// Check if we were successful in obtaining the map.
if (myMap != null) {
// The Map is verified. It is now safe to manipulate the map.
setUpMap();
}
}
}
#Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(getApplicationContext());
if (resultCode == ConnectionResult.SUCCESS){
Toast.makeText(getApplicationContext(),
"isGooglePlayServicesAvailable SUCCESS",
Toast.LENGTH_LONG).show();
}else{
GooglePlayServicesUtil.getErrorDialog(resultCode, this, RQS_GooglePlayServices);
}
}
private void setUpMap(){
myMap.setMyLocationEnabled(true);
}
}
mainifest file is here with proper permissions.
mainfest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.mapexample"
android:versionCode="1"
android:versionName="1.0" >
<permission
android:name="com.example.mapexample.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-permission android:name="com.example.mapexample.permission.MAPS_RECEIVE" />
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="8" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<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" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<uses-library
android:name="com.google.android.maps"
android:required="true" />
<activity
android:name="com.example.mapexample.MainMenuActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.example.mapexample.MainActivity">
</activity>
<activity
android:name="com.example.mapexample.ATMlist">
</activity>
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="MY KEY HERE" />
</application>
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
</manifest>

Try turning GPS satellites off in Location access settings. If it's enabled but GPS can't be reached, the my location button fails silently; by turning it off it apparently forces the feature to use the network provider.