GeoEncoder 给 Exception service not found

Question

我想获取当前位置的所有信息，例如国家名称、街道我使用地理编码器并使用代码

Geocoder geocoder = new Geocoder(ctx, Locale.getDefault());
List<Address> addresses = geocoder.getFromLocation(latitude, longitude, 1);

getFromLocation给service not found exception

Answer 1

试试这个

public class CityActivity extends Activity implements LocationListener{
protected LocationManager locationManager;
protected LocationListener locationListener;
protected Context context;
TextView txtLat;
String lat;
String provider;
protected String latitude,longitude; 
protected boolean gps_enabled,network_enabled;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_city);
txtLat = (TextView) findViewById(R.id.textview1);

locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1000*60*5,100,this);
}
@Override
public void onLocationChanged(Location location) {
txtLat = (TextView) findViewById(R.id.textview1);
txtLat.setText("Latitude:" + location.getLatitude() + ", Longitude:" + location.getLongitude());

Geocoder geocoder = new Geocoder(this, Locale.getDefault());
 List<Address> addresses;
try {
    addresses = geocoder.getFromLocation(location.getLatitude(), location.getLongitude(), 1);
    if (addresses.isEmpty()) {
        Log.d("CityActivity","Waiting for Location");
    }else{
    String CityName = addresses.get(0).getAddressLine(2);
     String StateName = addresses.get(0).getAddressLine(1);
     String CountryName = addresses.get(0).getAddressLine(0);
     String area=addresses.get(0).getLocality();
     Log.d("CityActivity", area);

    }
} catch (IOException e) {
    // TODO Auto-generated catch block
    Log.e("CityActivity", "Error in try");
    e.printStackTrace();
}


}

@Override
public void onProviderDisabled(String provider) {
Log.d("Latitude","disable");
}

@Override
public void onProviderEnabled(String provider) {
Log.d("Latitude","enable");
}

@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
Log.d("Latitude","status");
}    
}

Answer 2

我在我的应用程序中遇到了完全相同的问题，最终编写了自己的 GeocodeTask：

class GoogleApiGeocodingTask extends AsyncTask<Location, Void, JSONObject>{

  Locale defaultLoc = Locale.getDefault();

  GoogleApiGeocodingTask() {}

  @Override
  protected JSONObject doInBackground( Location... params ) {
    try{
      Location loc = params[ 0 ]
      ResponseTuple rt = doGet( "http://maps.google.com/maps/api/geocode/json?sensor=true&latLng=" + loc.getLattitude() + ',' + loc.getLongitude() + "&language=" + defaultLoc.getLanguage() );
      if( 200 == rt.getStatusCode() ) return rt.getJson();
    }catch( Exception e ){
      Log.e( "DelayedGeocodeHandler", "", e );
    }

    return null;
  }

  @Override
  protected void onPostExecute( JSONObject json ) {
    if( null == json || !"OK".equals( json.optString( "status" ) ) ) return;

    try{
      JSONArray array = json.getJSONArray( "results" ); 
      for( int ix = 0; ix < array.length(); ix++ ){
        JSONObject obj = array.optJSONObject( ix );
        JSONObject loc = obj.getJSONObject( "geometry" ).getJSONObject( "location" );
        JSONArray components = obj.getJSONArray( "address_components" );
        String country = null, city = null;
        for( int ixx = 0; ixx < components.length(); ixx++ ){
          JSONObject comp = (JSONObject)components.get( ixx );
          doSomethingWithAddressComponent( comp );
        }
      }
    }catch( Exception e ){
      Log.e( "GoogleApiGeocodingTask", "", e );
    }
  }
}

Util 和 ResponseTuple 是我的内部类，我认为，它们的作用很明显

更新：

缺少的方法：

public ResponseTuple doGet( String url) throws Exception {
  HttpClient httpClient = getHttpClient();
  HttpConnectionParams.setConnectionTimeout( httpClient.getParams(), timeout );
  HttpGet httpget = new HttpGet( url );
  HttpResponse hr = httpClient.execute( httpget );
  return new ResponseTuple( hr.getStatusLine().getStatusCode(), asString( hr ) );
}

public static String asString( HttpResponse response ) throws Exception {
  BufferedReader reader = new BufferedReader( new InputStreamReader( response.getEntity().getContent() ) );
  try{
    StringBuilder sb = new StringBuilder();
    String line = null;
    while( null != ( line = reader.readLine() ) ) sb.append( line );
    return sb.toString().trim();
  }finally{
    reader.close();
  }
}

和班级：

public class ResponseTuple {

  private int statusCode;

  private String body;

  public ResponseTuple( int statusCode, String body ) {
    this.statusCode = statusCode;
    this.body = body;
  }

  public int getStatusCode() {
    return statusCode;
  }

  public String getBody() {
    return body;
  }

  public JSONObject getJson() throws JSONException {
    return new JSONObject( body );
  }

}

我也看到，你需要一个reverse geocodig，所以我适当地采用了这个 URL