how to get city name using latitude and longitude in android

android, google-maps, indexoutofboundsexception, reverse-geocoding

Solution

Try

Geocoder gcd = new Geocoder(this, Locale.getDefault());
List<Address> addresses = null;
try {
    addresses = gcd.getFromLocation(lat, lng, 1);
} catch (IOException e) {
    e.printStackTrace();
}
if (addresses != null && addresses.size() > 0) {
    String locality = addresses.get(0).getLocality();
}

Problem

I am trying to get city in TextView using latitude and longitude. I am getting `IndexOutOfBoundsException`. AndroidGPSTrackingActivity.java ``` import android.app.Activity; import android.location.Address; import android.location.Geocoder; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.TextView; import android.widget.Toast; import java.io.IOException; import java.util.List; import java.util.Locale; import static com.example.khaledsb.location.R.id.lng; import static java.util.Locale.*; public class AndroidGPSTrackingActivity extends Activity { public static float distFrom(float lat1, float lng1, float lat2, float lng2) { double earthRadius = 6371000; //meters double dLat = Math.toRadians(lat2-lat1); double dLng = Math.toRadians(lng2-lng1); double a = Math.sin(dLat/2) * Math.sin(dLat/2) + Math.cos(Math.toRadians(lat1)) * Math.cos(Math.toRadians(lat2)) * Math.sin(dLng/2) * Math.sin(dLng/2); double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a)); float dist = (float) (earthRadius * c); return dist; } Button btnShowLocation; // GPSTracker class GPSTracker gps; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); btnShowLocation = (Button) findViewById(R.id.btnShowLocation); final TextView lat =(TextView) findViewById(R.id.lat); final TextView lon = (TextView) findViewById(R.id.longt); final TextView addr = (TextView) findViewById(R.id.address); // show location button click event btnShowLocation.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View arg0) { // create class object gps = new GPSTracker(AndroidGPSTrackingActivity.this); // check if GPS enabled if(gps.canGetLocation()){ double latitude = gps.getLatitude(); double longitude = gps.getLongitude(); double Distance; Distance = distFrom((float) 36.5925907, 2.9051544f, 36.5805505f, 2.914749f); lat.setText(String.valueOf(latitude)); lon.setText(String.valueOf(longitude)); Geocoder geocoder = new Geocoder(AndroidGPSTrackingActivity.this, Locale.ENGLISH); try { List<Address> addresses = geocoder.getFromLocation(latitude, longitude, 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"); } addr.setText(strReturnedAddress.toString()); } else{ addr.setText("No Address returned!"); } } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); addr.setText("Can not get Address!"); } // \n is for new line //Toast.makeText(getApplicationContext(), "Your Location is - \nLat: " + latitude + "\nLong: " + longitude+" " + //" diastance "+Distance, Toast.LENGTH_LONG).show(); }else{ // can't get location // GPS or Network is not enabled // Ask user to enable GPS/network in settings gps.showSettingsAlert(); } } }); } } ``` I am getting the following error in logcat : ``` 5-09 11:17:21.858 4501-4501/com.example.khaledsb.location E/AndroidRuntime: FATAL EXCEPTION: main java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0 at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:251) at java.util.ArrayList.get(ArrayList.java:304) at com.example.khaledsb.location.AndroidGPSTrackingActivity$1.onClick(AndroidGPSTrackingActivity.java:79) at android.view.View.performClick(View.java:4204) at android.view.View$PerformClick.run(View.java:17355) at android.os.Handler.handleCallback(Handler.java:725) at android.os.Handler.dispatchMessage(Handler.java:92) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:5041) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) at dalvik.system.NativeStart.main(Native Method) ```

Original source

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