我能够获取经度和纬度，但获取地址时出现错误。
public boolean onTouchEvent(MotionEvent 事件, MapView mapView)
{
if(event.getAction()==0)
{
GeoPoint p = mapView.getProjection().fromPixels(
(int) event.getX(),
(int) event.getY());
Geocoder geoCoder=new Geocoder(getBaseContext(),Locale.getDefault());
try
{
List<Address> address = geoCoder.getFromLocation( p.getLatitudeE6() / 1E6,
p.getLongitudeE6() / 1E6, 1);
String add="";
if(address.size()>0)
{
for (int i=0; i<address.get(0).getMaxAddressLineIndex();i++)
add += address.get(0).getAddressLine(i) + "\n";
}
Toast.makeText(getBaseContext(), add, Toast.LENGTH_SHORT).show();
} catch (IOException e)
{
e.printStackTrace();
}
return true;
}
return false;
我的 Logcat -->
02-14 12:27:35.717: WARN/System.err(452): java.io.IOException: Service not Available
02-14 12:27:35.727: WARN/System.err(452): at android.location.Geocoder.getFromLocation(Geocoder.java:117)
02-14 12:27:35.727: WARN/System.err(452): at com.parkhya.SecondGps.MainActivity$MapOverlay.onTouchEvent(MainActivity.java:47)
02-14 12:27:35.745: WARN/System.err(452): at com.google.android.maps.OverlayBundle.onTouchEvent(OverlayBundle.java:63)
02-14 12:27:35.745: WARN/System.err(452): at com.google.android.maps.MapView.onTouchEvent(MapView.java:643)
02-14 12:27:35.757: WARN/System.err(452): at android.view.View.dispatchTouchEvent(View.java:3766)
02-14 12:27:35.757: WARN/System.err(452): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:897)
02-14 12:27:35.757: WARN/System.err(452): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:863)
02-14 12:27:35.767: WARN/System.err(452): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:863)
02-14 12:27:35.767: WARN/System.err(452): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:863)
02-14 12:27:35.777: WARN/System.err(452): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:863)
02-14 12:27:35.777: WARN/System.err(452): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1671)
02-14 12:27:35.777: WARN/System.err(452): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1107)
02-14 12:27:35.777: WARN/System.err(452): at android.app.Activity.dispatchTouchEvent(Activity.java:2086)
02-14 12:27:35.786: WARN/System.err(452): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1655)
02-14 12:27:35.786: WARN/System.err(452): at android.view.ViewRoot.handleMessage(ViewRoot.java:1785)
02-14 12:27:35.796: WARN/System.err(452): at android.os.Handler.dispatchMessage(Handler.java:99)
02-14 12:27:35.796: WARN/System.err(452): at android.os.Looper.loop(Looper.java:123)
02-14 12:27:35.796: WARN/System.err(452): at android.app.ActivityThread.main(ActivityThread.java:4627)
02-14 12:27:35.806: WARN/System.err(452): at java.lang.reflect.Method.invokeNative(Native Method)
02-14 12:27:35.816: WARN/System.err(452): at java.lang.reflect.Method.invoke(Method.java:521)
02-14 12:27:35.816: WARN/System.err(452): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
02-14 12:27:35.825: WARN/System.err(452): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
02-14 12:27:35.837: WARN/System.err(452): at dalvik.system.NativeStart.main(Native Method)
最佳答案
这是我在 Geocoder 失败时获取地址的方法...但首先让我解释一下我自己使用 Geocoder 的经历:
由于某些未知原因，Geocoder 工作正常，突然中断!。
我观察到，一段时间后(可能是几天)，Geocoder 开始抛出“服务不可用”异常。
编辑->如Christian所述，即使 isPresent() 返回 true 也会抛出异常。<-EDIT END
真的很奇怪，因为它之前工作正常并且没有发生配置更改:
- 同一台设备
- 相同的 Android 版本
- 相同的应用
- 相同的 list
- WIFI 已启动并正在运行，设置中已启用设备定位功能
当然，某些发生了变化，但目前我们还不知 Prop 体是什么。 有一个关于此的错误:Issue 38009: 4.1.1 Geocoder throwing exception: IOException: Service not Available
此线程 (ATTOW) 上的最后一篇文章“可能它会在 android 4.0.x + 目标 API x 中定期重现”
作为解决方法，您可以使用Google map
这是我的 GeocoderHelper 类，它提供了一个“谷歌地图”B 计划，以防 Geocoder 开始失败。 就我而言，我只对 CityName 感兴趣，但您基本上可以在 google map JSON 输出中获取任何可用数据
用法:
new GeocoderHelper().fetchCityName(context, location); Then do somthing in onPostExecute() of example code (send broadcast, invoke listener method, set a textView text, whatever)
GeocoderHelper 类:
package com.<your_package>.location;
import java.util.List;
import java.util.Locale;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.BasicResponseHandler;
import org.json.JSONArray;
import org.json.JSONObject;
import android.content.Context;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.net.http.AndroidHttpClient;
import android.os.AsyncTask;
import android.util.Log;
public class GeocoderHelper
{
private static final AndroidHttpClient ANDROID_HTTP_CLIENT = AndroidHttpClient.newInstance(GeocoderHelper.class.getName());
private boolean running = false;
public void fetchCityName(final Context contex, final Location location)
{
if (running)
return;
new AsyncTask<Void, Void, String>()
{
protected void onPreExecute()
{
running = true;
};
@Override
protected String doInBackground(Void... params)
{
String cityName = null;
if (Geocoder.isPresent())
{
try
{
Geocoder geocoder = new Geocoder(contex, Locale.getDefault());
List<Address> addresses = geocoder.getFromLocation(location.getLatitude(), location.getLongitude(), 1);
if (addresses.size() > 0)
{
cityName = addresses.get(0).getLocality();
}
}
catch (Exception ignored)
{
// after a while, Geocoder start to trhow "Service not availalbe" exception. really weird since it was working before (same device, same Android version etc..
}
}
if (cityName != null) // i.e., Geocoder succeed
{
return cityName;
}
else // i.e., Geocoder failed
{
return fetchCityNameUsingGoogleMap();
}
}
// Geocoder failed :-(
// Our B Plan : Google Map
private String fetchCityNameUsingGoogleMap()
{
String googleMapUrl = "http://maps.googleapis.com/maps/api/geocode/json?latlng=" + location.getLatitude() + ","
+ location.getLongitude() + "&sensor=false&language=fr";
try
{
JSONObject googleMapResponse = new JSONObject(ANDROID_HTTP_CLIENT.execute(new HttpGet(googleMapUrl),
new BasicResponseHandler()));
// many nested loops.. not great -> use expression instead
// loop among all results
JSONArray results = (JSONArray) googleMapResponse.get("results");
for (int i = 0; i < results.length(); i++)
{
// loop among all addresses within this result
JSONObject result = results.getJSONObject(i);
if (result.has("address_components"))
{
JSONArray addressComponents = result.getJSONArray("address_components");
// loop among all address component to find a 'locality' or 'sublocality'
for (int j = 0; j < addressComponents.length(); j++)
{
JSONObject addressComponent = addressComponents.getJSONObject(j);
if (result.has("types"))
{
JSONArray types = addressComponent.getJSONArray("types");
// search for locality and sublocality
String cityName = null;
for (int k = 0; k < types.length(); k++)
{
if ("locality".equals(types.getString(k)) && cityName == null)
{
if (addressComponent.has("long_name"))
{
cityName = addressComponent.getString("long_name");
}
else if (addressComponent.has("short_name"))
{
cityName = addressComponent.getString("short_name");
}
}
if ("sublocality".equals(types.getString(k)))
{
if (addressComponent.has("long_name"))
{
cityName = addressComponent.getString("long_name");
}
else if (addressComponent.has("short_name"))
{
cityName = addressComponent.getString("short_name");
}
}
}
if (cityName != null)
{
return cityName;
}
}
}
}
}
}
catch (Exception ignored)
{
ignored.printStackTrace();
}
return null;
}
protected void onPostExecute(String cityName)
{
running = false;
if (cityName != null)
{
// Do something with cityName
Log.i("GeocoderHelper", cityName);
}
};
}.execute();
}
}
希望这会有所帮助。
关于android - 服务在 geoCoder 中不可用，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/9272918/