CODEWITHSUNDEEP
androidlocationmanager
user3731910
user3731910

Reputation:

Geocoder returns empty list on real device

I'm trying to get the country name using NETWORK_PROVIDER, i wrote a method

private int getCurrentLocation(Location location) throws IOException {
    Geocoder geocoder = new Geocoder(this, getResources().getConfiguration().locale);
    List<Address> addresses = geocoder.getFromLocation(location.getLatitude(), location.getLongitude(), 5);

    String CurrentCountryFullName = addresses.get(0).getCountryName();
    if (CurrentCountryFullName != null) {
        for (StandartCurrency standartCurrency: RecourcesForStandartCurrencies.getStandartCurrencyList()){
            if (RecourcesForStandartCurrencies.getCountryFullName(standartCurrency.getPosition()).toLowerCase().contains(CurrentCountryFullName.toLowerCase()))
                return standartCurrency.getPosition();
        }
    }
    return AddedCurrency.getAddedCurrenciesCount();
}

I call this method from

    LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
    try {
        leftFieldIndex = getCurrentLocation(locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER));
    } catch (IOException e) {
        e.printStackTrace();

My AdnroidManifest.xml contains 

<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"/>

I'm testing on Nexus 4, it has wifi connection with working internet, but still not working.

Upvotes: 5

Views: 6249

Answers (2)

Davide
Davide

Reputation: 3472

I had the same problem and I switched to v3 web API. Now I'm using the java client and all work well.

All info are in the Google Maps page

Upvotes: 0

Rarw
Rarw

Reputation: 7663

Geocoder is not stable and sometimes stops working. You have not posted an error log or exception but from experience, when Geocoder breaks it simply returns an empty list. Unfortunately there is no way to check if Geocoder is working in advance (there is only a method to check if Geocoder is available, which will return true even if it is not functioning)

The work around is to connect to the Google Maps web api when your Geocoder returns an empty list. Look at this post for an example of the code. You're pretty much going to just check to see if the list returned from the Geocoder is null or empty first and if it is use an AsyncTask to make a web api call to the Google Maps api. The end result is the same so you should not notice a difference in functionality. 

private int getCurrentLocation(Location location) throws IOException {
    Geocoder geocoder = new Geocoder(this, getResources().getConfiguration().locale);
    List<Address> addresses = geocoder.getFromLocation(location.getLatitude(),   location.getLongitude(), 5);
    if(addresses != null && addresses.size() > 0 {
        //use addresses
    } else {
        //call web API async task 
    }

}

Depending on what you're doing with the addresses, it may make sense to break out your Geocoder implementation into a separate class. That way you can use an Interface to connect your Geocoder class to your activity or fragment and make a seamless transition between your AsyncTask web api call and Geocoder should the later stop working (you obviously cannot return the results of the AsyncTask in the same method because it is not delivered at the time the method is finished)

Upvotes: 7

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