我从位置管理器获取纬度和经度。
获得这些积分之后，我正在尝试使用Geocoder方法获取地址，但我得到的IOException名为服务不可用。
我试图解决这个问题，但我无法做到。然后我改变了实施，几个小时后我找到了一个解决方案，但我不知道这是最好的方法。
请告知获取当前地址的最佳方式是什么？
public class MainActivity extends Activity implements LocationListener {
// providers
public LocationManager locationManager;
String strNetworkProvider;
public TextView tvAddress;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Get the Location Manager
String locati
locati getSystemService(location_context);
strNetworkProvider = LocationManager.NETWORK_PROVIDER;
locationManager.requestLocationUpdates(strNetworkProvider, 0, 0,
MainActivity.this);
tvAddress = (TextView) findViewById(R.id.address);
}
// Get the current Location
@Override
public void onLocationChanged(Location location) {
if (location != null) {
locationManager.removeUpdates(MainActivity.this);
double latitude = location.getLatitude();
double l
Double[] geopoints = { latitude, longitude };
Log.i("Latitude and Logitude", latitude + ", " + longitude);
// async task for initial WS call
new getAddressFromGeopoints().execute(geopoints);
}
}
@Override
public void onProviderDisabled(String arg0) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
// Async task for getting the address
public class getAddressFromGeopoints extends
AsyncTask<Double, Void, List<Address>> {
@Override
protected List<Address> doInBackground(Double... geoPoints) {
List<Address> addresses;
addresses = getFromLocation(geoPoints[0], geoPoints[1], 1);
return addresses;
}
protected void onPostExecute(final List<Address> addresses) {
if (addresses != null && addresses.size() > 0) {
String address = addresses.get(0).getAddressLine(0);
tvAddress.setText(address);
Log.i("Address", address);
}
}
}
// This method is responsible for get the address from the
// Geopoints(Latitude and Longitude)
public static List<Address> getFromLocation(double lat, double lng,
int maxResult) {
String address = String
.format(Locale.ENGLISH,
"http://maps.googleapis.com/maps/api/geocode/json?latlng=%1$f,%2$f&sensor=true&language;="
+ Locale.getDefault().getCountry(), lat, lng);
HttpGet httpGet = new HttpGet(address);
HttpClient client = new DefaultHttpClient();
HttpResponse response;
StringBuilder stringBuilder = new StringBuilder();
List<Address> retList = null;
try {
resp
HttpEntity entity = response.getEntity();
InputStream stream = entity.getContent();
int b;
while ((b = stream.read()) != -1) {
stringBuilder.append((char) b);
}
JSONObject js JSONObject();
js JSONObject(stringBuilder.toString());
retList = new ArrayList<Address>();
if ("OK".equalsIgnoreCase(jsonObject.getString("status"))) {
JSONArray results = jsonObject.getJSONArray("results");
for (int i = 0; i < results.length(); i++) {
JSONObject result = results.getJSONObject(i);
String indiStr = result.getString("formatted_address");
Address addr = new Address(Locale.ITALY);
addr.setAddressLine(0, indiStr);
retList.add(addr);
}
}
} catch (ClientProtocolException e) {
Log.e(MainActivity.class.getName(),
"Error calling Google geocode webservice.", e);
} catch (IOException e) {
Log.e(MainActivity.class.getName(),
"Error calling Google geocode webservice.", e);
} catch (JSONException e) {
Log.e(MainActivity.class.getName(),
"Error parsing Google geocode webservice response.", e);
}
return retList;
}
}
答案 0 :(得分：0)
分享我一般使用的代码
如何使用代码： - 首先计算lat和lng以及调用String address[] = getCountry();
address[0] // country
address[1] // postal code
address[2] // Locality
address[3] // AddressLine
常量
private static final int COUNTRY = 0;
private static final int POSTALCODE = 1;
private static final int CITY = 2;
private static final int ADDRESS = 3;
方法
public String[] getCountry() {
if (lat != 0.0 && lng != 0.0) {
Geocoder geocoder = new Geocoder(activity, Locale.getDefault());
String[] country = new String[4];
try {
List<Address> addresses = geocoder.getFromLocation(lat,
lng, 1);
if (addresses.size() > 0) {
Address obj = addresses.get(0);
// String add = obj.getAddressLine(0);
country[0] = obj.getCountryName() == null ? "xx" : obj
.getCountryName();
country[1] = obj.getPostalCode() == null ? "xx" : obj
.getPostalCode();
country[2] = obj.getLocality() == null ? "xx" : obj
.getLocality();
country[3] = obj.getAddressLine(0) == null ? "xx" : obj
.getAddressLine(0);
} else {
country = getFromLocation();
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
// Toast.makeText(activity, e.getMessage(),
// Toast.LENGTH_SHORT).show();
return getFromLocation();
}
return country;
} else {
return new String[] { "xx", "xx", "xx", "xx" };
}
}
public String[] getFromLocation() {
String[] countries = new String[4];
String address = String
.format(Locale.ENGLISH,
"http://maps.googleapis.com/maps/api/geocode/json?latlng=%1$f,%2$f&sensor=true&language="
+ Locale.getDefault().getCountry(), lat,
lng);
// Log.v("url", address);
StringBuilder stringBuilder = new StringBuilder();
try {
URL url = new URL(address);
HttpURLConnection conn = (HttpURLConnection) url
.openConnection();
InputStream stream = conn.getInputStream();
int b;
while ((b = stream.read()) != -1) {
stringBuilder.append((char) b);
}
JSONObject jsonObject = new JSONObject(stringBuilder.toString());
// Log.v("json", stringBuilder.toString());
if ("OK".equalsIgnoreCase(jsonObject.getString("status"))) {
JSONArray results = jsonObject.getJSONArray("results");
int count = 0;
for (int i = 0; i < results.length(); i++) {
JSONObject result = results.getJSONObject(i);
countries[ADDRESS] = result
.getString("formatted_address");
JSONArray array = result
.getJSONArray("address_components");
for (int j = 0; j < array.length(); j++) {
JSONObject oo = array.getJSONObject(j);
JSONArray type = oo.getJSONArray("types");
for (int k = 0; k < type.length(); k++) {
String tt = type.getString(k);
if (tt.equals("country")) {
countries[COUNTRY] = oo
.getString("long_name");
count++;
}
if (tt.equals("postal_code")) {
countries[POSTALCODE] = oo
.getString("long_name");
count++;
}
if (tt.equals("locality")) {
countries[CITY] = oo.getString("long_name");
count++;
}
if (count == 3) {
return countries;
}
}
}
String indiStr = result.getString("address_components");
Address addr = new Address(Locale.getDefault());
addr.setAddressLine(0, indiStr);
}
}
} catch (ClientProtocolException e) {
Log.e(MainActivity.class.getName(),
"Error calling Google geocode webservice.", e);
return new String[] { "xx", "xx", "xx", "xx" };
} catch (IOException e) {
Log.e(MainActivity.class.getName(),
"Error calling Google geocode webservice.", e);
return new String[] { "xx", "xx", "xx", "xx" };
} catch (JSONException e) {
Log.e(MainActivity.class.getName(),
"Error parsing Google geocode webservice response.", e);
return new String[] { "xx", "xx", "xx", "xx" };
}
return countries;
}
}
如果代码找不到地址，则会返回xx。