i written following code to get current location. although I m testing it in emulator with different latitude and longitude. But it cant convert the lattitude and longitude in real location.
public class LocationFindingActivity extends Activity {
/** Called when the activity is first created. */
EditText et;
LocationManager locationManager;
String provider;
LocationListener locationListener;
Location currentLocation;
String addressString="";
String longlattString="";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
et=(EditText)findViewById(R.id.locationTXT);
locationManager =(LocationManager) getSystemService(Context.LOCATION_SERVICE);
Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_FINE);
criteria.setAltitudeRequired(false);
criteria.setBearingRequired(false);
criteria.setCostAllowed(true);
criteria.setPowerRequirement(Criteria.POWER_LOW);
provider = locationManager.getBestProvider(criteria, true);
currentLocation=locationManager.getLastKnownLocation(provider);
et.setText(addressString);
locationListener =new LocationListener() {
#Override
public void onStatusChanged(String arg0, int arg1, Bundle arg2) {
// TODO Auto-generated method stub
}
#Override
public void onProviderEnabled(String arg0) {
// TODO Auto-generated method stub
}
#Override
public void onProviderDisabled(String arg0) {
// TODO Auto-generated method stub
}
#Override
public void onLocationChanged(Location arg0) {
// TODO Auto-generated method stub
updateWithNewLocation(currentLocation);
}
};
updateWithNewLocation(currentLocation);
locationManager.requestLocationUpdates(provider, 2000, 10,locationListener)
}
private void updateWithNewLocation(Location location) {
if (location != null)
{
double lat = location.getLatitude();
double lng = location.getLongitude();
longlattstring="Lattitude :"+lat+"Longitude :"+lng;
Geocoder gc = new Geocoder(this, Locale.getDefault());
try
{
List<Address> addresses = gc.getFromLocation(lat, lng, 1);
StringBuilder sb = new StringBuilder();
//Toast.makeText(this, "Problem1", 2000).show();
if (addresses.size() > 0)
{
Address address = addresses.get(0);
for (int i = 0; i < address.getMaxAddressLineIndex(); i++)
sb.append(address.getAddressLine(i)).append("\n");
sb.append(address.getLocality()).append("\n");
Toast.makeText(this, "Problem2", 2000).show();
sb.append(address.getPostalCode()).append("\n");
sb.append(address.getCountryName());
}
addressString = sb.toString();
}
catch (IOException e)
{
Toast.makeText(this, "Problem Catch", 2000).show();
}
}
else
{
addressString = "No location found";
}
et.setText(addressString);
}
}
I am getting problem in this line
List addresses = gc.getFromLocation(lat, lng, 1);
the statement doesn't return anything.
It's a known bug which they never fixed see service not avavilable.I think you will find that it works in the the API level 7 emulator.
Related
I have implemented this code to display address based on GPS. The latitude and longitude are working fine (appear on the screen) however, for the address its stands "no address found". Please have look at this code and point any errors. Thanks
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_find__location);
LocationManager locationManager;
String context = Context.LOCATION_SERVICE;
locationManager =(LocationManager)getSystemService(context);
Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_FINE);
criteria.setAltitudeRequired(false);
criteria.setBearingRequired(false);
criteria.setCostAllowed(true);
criteria.setPowerRequirement(Criteria.POWER_LOW);
String provider = locationManager.getBestProvider(criteria, true);
//String provider = LocationManager.GPS_PROVIDER;
Location location = locationManager.getLastKnownLocation(provider);
updateWithNewLocation(location);
locationManager.requestLocationUpdates(provider, 2000, 10, locationListener);
//buttons assigned
Button mainMenuBtn = (Button) findViewById(id.mainMenuBtn);
mainMenuBtn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
finish();
}
});
}
private final LocationListener locationListener = new LocationListener() {
#Override
public void onLocationChanged(Location location) {
updateWithNewLocation(location);
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
#Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
#Override
public void onProviderDisabled(String provider) {
updateWithNewLocation(null);
}
};
private void updateWithNewLocation(Location location) {
String latLong;
TextView myLocationText;
myLocationText = (TextView)findViewById(R.id.myLocationText);
String addressString = "no address found";
if(location != null){
double lat = location.getLatitude();
double lng = location.getLongitude();
latLong = "Lat: "+lat+"\nLong: "+lng;
//double latitude = location.getLatitude();
//double longitude = location.getLongitude();
Geocoder gc = new Geocoder(this,Locale.getDefault());
try{
List<Address> addresses = gc.getFromLocation(lat, lng, 1);
StringBuilder sb = new StringBuilder();
if (addresses.size() > 0){
Address address = addresses.get(0);
for(int i=0; i < address.getMaxAddressLineIndex(); i++)
sb.append(address.getAddressLine(i)).append("\n");
sb.append(address.getLocality()).append("\n");
sb.append(address.getPostalCode()).append("\n");
sb.append(address.getCountryName());
}
addressString = sb.toString();
}catch (IOException e){}
}else{
latLong = "No location found";
}
myLocationText.setText("Your coordinates are:\n"+latLong + "\n"+addressString);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.find__location, menu);
return true;
}
}
I have had the same issue which was pretty annoying. Some answers suggested that geocoder does not always return a value so you have to loop some. However, this is not a good approach as you may never get a value, which sometimes is the case. Thus, what I have done in my project was to use google's reverse geocoding api. Idea is same but methodology is different.
This is the api page: https://developers.google.com/maps/documentation/geocoding/
Check the first answer here : Android Geocoder getFromLocationName always returns null
Hope this helps
I prefer to get address using google geocoding API, by sending lat lon params, you'll get some informations
https://developers.google.com/maps/documentation/geocoding/
A part of my app is attempting to update the location (using DDMS with an emulator in Eclipse) and then get the address to print to LogCat.
My code:
LocationManager locationManager;
String providerName = LocationManager.GPS_PROVIDER;
LocationProvider gpsProvider;
public void enable()
{
locationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE); //Need to ask for this system service
Criteria criteria = new Criteria(); //Setting the criteria for the location provider
criteria.setAccuracy(Criteria.ACCURACY_FINE);
criteria.setPowerRequirement(Criteria.POWER_HIGH);
criteria.setAltitudeRequired(true);
criteria.setBearingRequired(true);
criteria.setSpeedRequired(true);
criteria.setCostAllowed(true);
String provider = LocationManager.GPS_PROVIDER;
int time = 5000; //Time in ms
int distance = 5; //Distance in meters
LocationListener myLocationListener = new LocationListener()
{
public void onLocationChanged(Location locations)
{
updateLocation(locations);
}
public void onProviderDisabled(String arg0)
{
// TODO Auto-generated method stub
}
public void onProviderEnabled(String arg0)
{
// TODO Auto-generated method stub
}
public void onStatusChanged(String arg0, int arg1, Bundle arg2)
{
// TODO Auto-generated method stub
}
};
locationManager.requestLocationUpdates(provider, time, distance, myLocationListener);
}
/////////////////////////////////////////////////////////////////////////////////
public void findLocation()
{
gpsProvider = locationManager.getProvider(providerName);
//String bestProvider = locationManager.getBestProvider(criteria, true);
Location locations = locationManager.getLastKnownLocation(providerName);
updateLocation(locations);
}
public void updateLocation(Location locations)
{
if (locations != null)
{
Geocoder geocoder = new Geocoder(getApplicationContext(), Locale.getDefault());
double latitude = locations.getLatitude();
double longitude = locations.getLongitude();
List<Address> addresses = null;
Geocoder GCoder = new Geocoder(this, Locale.getDefault());
try
{
addresses = GCoder.getFromLocation(latitude, longitude, 10);
Address first = addresses.get(0);
Log.d("ADDRESS", first.toString());
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
This, to me, should print the value "first" into LogCat but it doesn't seem to actually display anything.
I have the required permission in the manifest so that is not the issue.
Any help that can be provided is great, thank you.
Use this code
See Updated Code
LocationManager locationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
String provider = locationManager.getBestProvider(new Criteria(), true);
Location locations = locationManager.getLastKnownLocation(provider);
List<String> providerList = locationManager.getAllProviders();
if(null!=locations && null!=providerList && providerList.size()>0){
double longitude = locations.getLongitude();
double latitude = locations.getLatitude();
Geocoder geocoder = new Geocoder(getApplicationContext(), Locale.getDefault());
try {
List<Address> listAddresses = geocoder.getFromLocation(latitude, longitude, 1);
if(null!=listAddresses&&listAddresses.size()>0){
String _Location = listAddresses.get(0).getAddressLine(1);
}
} catch (IOException e) {
e.printStackTrace();
}
}
I wrote a program to show my current location, Address etc in android phone. The API used is Android 2.2. Previously it worked fine in a MTS CDMA phone. It had an API of Android 2.3. It also works fine in emulator. Now. I have bought a Sony Ericsson Xperia Minipro and it also has Android 2.3. But the program will run on it. But the edit texts will not show anything. I use edit texts to display the values. They are not updated by the program at all. What can be the problem? Same program works fine in emulator and it shows location! Please help. I can paste the code below
public class TravelGuide extends Activity {
private static final long MINIMUM_DISTANCE_CHANGE_FOR_UPDATES=1;
private static final long MINIMUM_TIME_BETWEEN_UPDATES=1000;
StringBuilder strReturnedAddress;
List<Address> addresses;
protected LocationManager locationManager;
static String videoId;
Double lat;
Double longd;
Address returnedAddress;
private final LocationListener locationListener = new LocationListener() {
public void onLocationChanged(Location location) {
//Double latitude = location.getLatitude();
//Double longitude = location.getLongitude();
}
#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
}
};
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
locationManager=(LocationManager)getSystemService(Context.LOCATION_SERVICE);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, MINIMUM_TIME_BETWEEN_UPDATES,
MINIMUM_DISTANCE_CHANGE_FOR_UPDATES,new MyLocationListener());
showCurrentLocation();
}
public void showCurrentLocation()
{
Location location=locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if(location!=null)
{
TextView myLatitude = (TextView)findViewById(R.id.mylatitude);
TextView myLongitude = (TextView)findViewById(R.id.mylongitude);
TextView myAddress = (TextView)findViewById(R.id.myaddress);
String message=String.format("currentLocation\n Longitude:%1$s \n Latitude:%2$s",location.getLongitude(),location.getLatitude());
Toast.makeText(TravelGuide.this,message,Toast.LENGTH_LONG).show();
myLatitude.setText("Latitude: " + String.valueOf(location.getLatitude()));
myLongitude.setText("Longitude: " + String.valueOf(location.getLongitude()));
Geocoder geocoder = new Geocoder(this, Locale.ENGLISH);
try {
List<Address> addresses = geocoder.getFromLocation(Double.valueOf(location.getLatitude()),
Double.valueOf(location.getLongitude()), 1);
if(addresses != null) {
Address returnedAddress = addresses.get(0);
StringBuilder strReturnedAddress = new StringBuilder("Address:\n");
for(int i=0; i<returnedAddress.getMaxAddressLineIndex(); i++) {
strReturnedAddress.append(returnedAddress.getAddressLine(i)).append("\n");
}
videoId = (returnedAddress.getAddressLine(1)).toString();
//sendAddress(videoId);
myAddress.setText(strReturnedAddress.toString());
}
else{
myAddress.setText("No Address returned!");
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
//test = "kovalam";
myAddress.setText("Canont get Address!");
}
}
}
public class MyLocationListener implements LocationListener
{
//private final Context MyLocationListener = null;
//double LATITUDE;
//double LONGITUDE;
TextView myLatitude;
TextView myLongitude;
TextView myAddress;
public void onLocationChanged(Location location)
{
//Context context = null;
myLatitude = (TextView)findViewById(R.id.mylatitude);
myLongitude = (TextView)findViewById(R.id.mylongitude);
myAddress = (TextView)findViewById(R.id.myaddress);
//String message=String.format("new Location\n Longitude:%1$s \n Latitude:%2$s",
//location.getLongitude(),location.getLatitude());
//Toast.makeText(TouristGuideActivity.this,message,Toast.LENGTH_LONG).show();
myLatitude.setText("Latitude: " + String.valueOf(location.getLatitude()));
myLongitude.setText("Longitude: " + String.valueOf(location.getLongitude()));
Geocoder geocoder = new Geocoder(TravelGuide.this, Locale.ENGLISH);
try {
List<Address> addresses = geocoder.getFromLocation(Double.valueOf(location.getLatitude()),
Double.valueOf(location.getLongitude()), 1);
if(addresses != null) {
Address returnedAddress = addresses.get(0);
StringBuilder strReturnedAddress = new StringBuilder("Address:\n");
for(int i=0; i<returnedAddress.getMaxAddressLineIndex(); i++) {
strReturnedAddress.append(returnedAddress.getAddressLine(i)).append("\n");
}
videoId = (returnedAddress.getAddressLine(1)).toString();
//sendAddress(videoId);
//myAddress.setText(strReturnedAddress.toString());
myAddress.setText("Hello");
}
else{
myAddress.setText("No Address returned!");
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
myAddress.setText("Canont get Address!");
}
}
public void onStatusChanged(String s, int i, Bundle b)
{
//Toast.makeText(TouristGuideActivity.this,"Provider status changed",Toast.LENGTH_LONG).show();
}
public void onProviderDisabled(String s)
{
Toast.makeText(TravelGuide.this,"Provider disabled by the user. GPS turned off",
Toast.LENGTH_LONG).show();
}
public void onProviderEnabled(String s)
{
Toast.makeText(TravelGuide.this,"Provider enabled by the user. GPS turned on",
Toast.LENGTH_LONG).show();
}
}
}
you are getting locaton object null,try put log in else condition..and the reason is you are fetching last known location which in not available in that phone some how..
so if its true..
Go to this answer here implement that code to get current location...and it will work fine.
If you are using GPS Provider to get Location,Its found that Its not so accurate to return you location object,Network Provider is better option According to me.
I am working on development of android game application. I want to judge location of players of game. I want that details like pincode, city name,country name, geo cordinates, accuracy etc.
public class GPSLocationListener implements LocationListener {
Context context;
#Override
public void onLocationChanged(Location location2) {
location2.getLatitude();
location2.getLongitude();
#Override
public void onProviderDisabled(String provider) {
AlertPopup.displayPopup(context, "GPS Disabled");
}
#Override
public void onProviderEnabled(String provider) {
AlertPopup.displayPopup(context, "GPS Enabled");
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
#Override
protected boolean isRouteDisplayed() {
return false;
}
}
but not able to get all data which i want
Assuming that you are aware how to use GPS in android. Here is how to get the information you want.
Pincode, city name, country name
double latitude = location.getLatitude();
double longitude = location.getLongitude();
Geocoder gc = new Geocoder(this, Locale.getDefault());
try
{
List<Address> addresses = gc.getFromLocation(latitude,
longitude, 1);
StringBuilder sb = new StringBuilder();
if (addresses.size() > 0)
{
Address address = addresses.get(0);
for (int i = 0; i < address.getMaxAddressLineIndex(); i++)
sb.append(address.getAddressLine(i)).append("\n");
sb.append(address.getLocality()).append("\n");
sb.append(address.getPostalCode()).append("\n");
sb.append(address.getCountryName());
}
addressString = sb.toString();
} catch (IOException e) {
}
}
else
{
addressString = "No where";
}
Geo cordinates, accuracy
location.getLatitude()
and
location.getAccuracy()
This question already has answers here:
Geocoder.getFromLocation throws IOException on Android emulator
(7 answers)
Closed 6 months ago.
In the code below, I am getting the following exception
NO SERVICE AVAIALBLE
public class ds extends Activity {
LocationManager locationManager;
double lati,longi;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
String location_context = Context.LOCATION_SERVICE;
locationManager = (LocationManager)getSystemService(location_context);
testProviders();
}
public void testProviders() {
TextView tv = (TextView)findViewById(R.id.myTextView);
StringBuilder sb = new StringBuilder("Enabled Providers:");
List<String> providers = locationManager.getProviders(true);
for (String provider : providers)
{
locationManager.requestLocationUpdates(provider, 1000, 0,new LocationListener()
{
public void onLocationChanged(Location location) {}
public void onProviderDisabled(String provider){}
public void onProviderEnabled(String provider){}
public void onStatusChanged(String provider, int status,
Bundle extras){}
});
sb.append("\n").append(provider).append(":");
Location location = locationManager.getLastKnownLocation(provider);
if (location != null)
{
double lat = location.getLatitude();
double lng = location.getLongitude();
sb.append(lat).append(",").append(lng);
lati=lat;
longi=lng;
Geocoder gcd = new Geocoder(ds.this, Locale.getDefault());
List<Address> addresses;
try {
addresses = gcd.getFromLocation(lati, longi, 1);
if (addresses.size() > 0)
} catch (IOException e) {
Toast.makeText(ds.this, "hi exception", 5000).show();
}
}
else {
sb.append("No Location");
}
}
tv.setText(sb);
}
}
Code for Reverse Geocoding , you can pass the lattitude and longitude according to your requirement......
public class MainActivity extends FragmentActivity {
static final LatLng DELHI = new LatLng(39.6985207, -104.8954315);
GoogleMap map;
Button btn_geo;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activitymain);
map = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();
btn_geo=(Button)findViewById(R.id.btn_getAddress);
map.addMarker(new MarkerOptions().position(DELHI).icon(BitmapDescriptorFactory.fromResource(R.drawable.ic_launcher)));
// Move the camera instantly to hamburg with a zoom of 15.
map.moveCamera(CameraUpdateFactory.newLatLngZoom(DELHI, 15));
// Zoom in, animating the camera.
map.animateCamera(CameraUpdateFactory.zoomTo(10), 2000, null);
btn_geo.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Geocoder myLocation = new Geocoder(getApplicationContext(), Locale.getDefault());
try {
if(myLocation.isPresent())
{
List<Address> addresses=null ;
addresses = myLocation.getFromLocation(39.6985207, -104.8954315, 1);
System.out.println(".................."+addresses);
StringBuilder sb = new StringBuilder();
if (addresses.size() > 0)
{
Address address = addresses.get(0);
sb.append(address.getAddressLine(0)).append("\n");
sb.append(address.getLocality()).append("\n");
sb.append(address.getPostalCode()).append("\n");
sb.append(address.getCountryName());
Toast.makeText(getApplicationContext(), sb,Toast.LENGTH_LONG).show();
}
}
else
Toast.makeText(getApplicationContext(), "Not present",Toast.LENGTH_SHORT).show();
}
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
}
}