我正在地图上开发一个应用程序,我无法在这款手机中获取地址,它的Android版本是4.3,如下所示 -
但它在我的手机上工作正常,它的版本是4.1.2,如下所示 -
在一些棒棒糖版本中工作正常。
final Geocoder gc = new Geocoder(this, Locale.getDefault());
try {
List<Address> addresses = gc.getFromLocation(lat, lng, 1);
StringBuilder sb = new StringBuilder();
if (addresses.size() > 0) {
Address address = addresses.get(0);
for (int i = 0; i < address.getMaxAddressLineIndex(); i++) {
if (address.getAddressLine(i).equals("null")) {
} else {
sb.append(address.getAddressLine(i)).append("\n");
sb.append(address.getLocality()).append("\n");
//sb.append(address.getPostalCode()).append("\n");
//sb.append(address.getCountryName());
}
}
// Toast.makeText(RegistrationTest.this, "Text Address is " + sb.toString(), Toast.LENGTH_SHORT).show();
text_address = sb.toString();
}
} catch (Exception e) {
//Toast.makeText(RegistrationTest.this, "exception " + e, Toast.LENGTH_SHORT).show();
}
对不起我的英文,谢谢你的时间和帮助!
请帮助我,我被困在这里!
答案 0 :(得分:2)
所有制造商均未实施Geocoder。它可能是它不能在特定设备上工作的原因。来自Geocoder
文档:
Geocoder类需要一个未包含在核心android框架中的后端服务。如果平台中没有后端服务,Geocoder查询方法将返回一个空列表
或许有一个请求限额。
相反,您可以使用Google Maps geocoding API之类的远程服务(也是配额)。
答案 1 :(得分:1)
Geocoder无法在某些设备上运行。因此,我们需要创建一个自定义Geocoder。您可以使用Geocoder.isPresent()检查设备制造商是否实施了Geocoder,但该方法不可靠。我们无法确保Geocoder能够实现。
对于自定义Geocoder,您可以使用以下类,其用法与使用Geocoder完全相同:
import android.location.Address;
import android.util.Log;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
public class MyGeocoder {
public static final String TAG = MyGeocoder.class.getSimpleName();
static OkHttpClient client = new OkHttpClient();
public static List<Address> getFromLocation(double lat, double lng, int maxResult) {
String address = String.format(Locale.US,
"https://maps.googleapis.com/maps/api/geocode/json?latlng=%1$f,%2$f&sensor=false&language="
+ Locale.getDefault().getCountry(), lat, lng);
Log.d(TAG, "address = " + address);
Log.d(TAG, "Locale.getDefault().getCountry() = " + Locale.getDefault().getCountry());
return getAddress(address, maxResult);
}
public static List<Address> getFromLocationName(String locationName, int maxResults) {
String address = null;
try {
address = "https://maps.google.com/maps/api/geocode/json?address=" + URLEncoder.encode(locationName,
"UTF-8") + "&ka&sensor=false";
return getAddress(address, maxResults);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return null;
}
private static List<Address> getAddress(String url, int maxResult) {
List<Address> retList = null;
Request request = new Request.Builder().url(url)
.header("User-Agent", "OkHttp Headers.java")
.addHeader("Accept", "application/json; q=0.5")
.build();
try {
Response response = client.newCall(request).execute();
String responseStr = response.body().string();
JSONObject jsonObject = new JSONObject(responseStr);
retList = new ArrayList<Address>();
if ("OK".equalsIgnoreCase(jsonObject.getString("status"))) {
JSONArray results = jsonObject.getJSONArray("results");
if (results.length() > 0) {
for (int i = 0; i < results.length() && i < maxResult; i++) {
JSONObject result = results.getJSONObject(i);
Address addr = new Address(Locale.getDefault());
JSONArray components = result.getJSONArray("address_components");
String streetNumber = "";
String route = "";
for (int a = 0; a < components.length(); a++) {
JSONObject component = components.getJSONObject(a);
JSONArray types = component.getJSONArray("types");
for (int j = 0; j < types.length(); j++) {
String type = types.getString(j);
if (type.equals("locality")) {
addr.setLocality(component.getString("long_name"));
} else if (type.equals("street_number")) {
streetNumber = component.getString("long_name");
} else if (type.equals("route")) {
route = component.getString("long_name");
}
}
}
addr.setAddressLine(0, route + " " + streetNumber);
addr.setLatitude(
result.getJSONObject("geometry").getJSONObject("location").getDouble("lat"));
addr.setLongitude(
result.getJSONObject("geometry").getJSONObject("location").getDouble("lng"));
retList.add(addr);
}
}
}
} catch (IOException e) {
Log.e(TAG, "Error calling Google geocode webservice.", e);
} catch (JSONException e) {
Log.e(TAG, "Error parsing Google geocode webservice response.", e);
}
return retList;
}
}