通過GPS坐標確定國家

Question

我有一些由LocationManager驅動的GPS坐標。 設備連接到互聯網后，我必須檢查我去過的國家/地區。 是否有任何服務可讓您發送GPS位置並接收國家/地區作為回應？

Answer 1

您可以使用它來獲取在給定的經度和緯度中存儲為地址的所有詳細信息。

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(0);
    }
} catch (IOException e) {
    e.printStackTrace();
}

}

如果您需要有關經度和緯度的更多詳細信息，可以這樣做，

public void getAddress(double lat, double lng) {
    Geocoder geocoder = new Geocoder(HomeActivity.mContext, Locale.getDefault());
    try {
        List<Address> addresses = geocoder.getFromLocation(lat, lng, 1);
        Address obj = addresses.get(0);
        String add = obj.getAddressLine(0);
        GUIStatics.currentAddress = obj.getSubAdminArea() + ","
                + obj.getAdminArea();
        GUIStatics.latitude = obj.getLatitude();
        GUIStatics.longitude = obj.getLongitude();
        GUIStatics.currentCity= obj.getSubAdminArea();
        GUIStatics.currentState= obj.getAdminArea();
        add = add + "\n" + obj.getCountryName();
        add = add + "\n" + obj.getCountryCode();
        add = add + "\n" + obj.getAdminArea();
        add = add + "\n" + obj.getPostalCode();
        add = add + "\n" + obj.getSubAdminArea();
        add = add + "\n" + obj.getLocality();
        add = add + "\n" + obj.getSubThoroughfare();

        Log.v("IGA", "Address" + add);
        // Toast.makeText(this, "Address=>" + add,
        // Toast.LENGTH_SHORT).show();

        // TennisAppActivity.showDialog(add);
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
        Toast.makeText(this, e.getMessage(), Toast.LENGTH_SHORT).show();
    }
}

不要忘記在清單文件中添加權限。

Answer 2

使用地理編碼器，您可以這樣獲得國家/地區：

private String getCountry(double latitude, double longitude) {
        try {
            List<Address> addresses;
            Geocoder geocoder = new Geocoder(getActivity(), Locale.getDefault());
            addresses = geocoder.getFromLocation(latitude, longitude, 1); 
            return addresses.get(0).getCountryName();;
        } catch (IOException e) {
            e.printStackTrace();
        }
        return  "Unknown address";
    }