我试图通过从MainActivity启动IntentService来获取用户的位置。在服务内部我尝试反转地理编码try块内的位置，但是当我捕获异常并打印它时说“超时等待服务器响应”异常。但是有几次我有位置。所以我认为没有什么我的代码有问题。但是如果它从10中抛出8次异常就没用了。所以你可以建议一些事情来避免这种情况。
答案 0 :(得分：5)
<强> http://maps.googleapis.com/maps/api/geocode/json?latlng=lat,lng&sensor=true
Geocoder有超时等待服务器响应的错误。除此之外，您可以从代码中获取此请求以获取相应lat，lng的位置地址的json响应。
答案 1 :(得分：1)
由于无法使用互联网连接，我受到了影响，并且出现了错误。
请检查是否已分配互联网权限：
<uses-permission android:name="android.permission.INTERNET" />
仔细检查互联网是否开启。
为了获得响应，我在AsyncTask中编写了我的代码，如下所示：
class GeocodeAsyncTask extends AsyncTask<Void, Void, Address> {
String errorMessage = "";
@Override
protected void onPreExecute() {
progressBar.setVisibility(View.VISIBLE);
}
@Override
protected Address doInBackground(Void ... none) {
Geocoder geocoder = new Geocoder(DashboardActivity.this, Locale.getDefault());
List<Address> addresses = null;
double latitude = Double.parseDouble(strLatitude);
double longitude = Double.parseDouble(strLongitude);
try {
addresses = geocoder.getFromLocation(latitude, longitude, 1);
} catch (IOException ioException) {
errorMessage = "Service Not Available";
Log.e(TAG, errorMessage, ioException);
} catch (IllegalArgumentException illegalArgumentException) {
errorMessage = "Invalid Latitude or Longitude Used";
Log.e(TAG, errorMessage + ". " +
"Latitude = " + latitude + ", Longitude = " +
longitude, illegalArgumentException);
}
if(addresses != null && addresses.size() > 0)
return addresses.get(0);
return null;
}
protected void onPostExecute(Address address) {
if(address == null) {
progressBar.setVisibility(View.INVISIBLE);
tvcurrentLOc.setText(errorMessage);
}
else {
String addressName = "";
for(int i = 0; i < address.getMaxAddressLineIndex(); i++) {
addressName += "," + address.getAddressLine(i);
}
progressBar.setVisibility(View.INVISIBLE);
tvcurrentLOc.setText(addressName);
}
}
}
希望它会有所帮助。
答案 2 :(得分：1)
以下是快速解决方案。
public class GPSL extends Service implements LocationListener {
public Location getLocation() {
try {
locationManager = (LocationManager) mContext
.getSystemService(LOCATION_SERVICE);
// getting GPS status
isGPSEnabled = locationManager
.isProviderEnabled(LocationManager.GPS_PROVIDER);
// getting network status
isNetworkEnabled = locationManager
.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!isGPSEnabled && !isNetworkEnabled) {
// no network provider is enabled
} else {
this.canGetLocation = true;
// First get location from Network Provider
if (isNetworkEnabled) {
try
{
locationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("Network", "Network");
if (locationManager != null) {
location = locationManager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
catch (SecurityException e)
{
e.printStackTrace();
}
}
// if GPS Enabled get lat/long using GPS Services
if (isGPSEnabled) {
if (location == null) {
try
{
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("GPS Enabled", "GPS Enabled");
if (locationManager != null) {
location = locationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
catch (SecurityException e)
{
e.printStackTrace();
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
return location;
}
public List<Address> getGeocoderAddress(Context context) {
if (location != null) {
Geocoder geocoder = new Geocoder(context, Locale.ENGLISH);
try {
/**
* Geocoder.getFromLocation - Returns an array of Addresses
* that are known to describe the area immediately surrounding the given latitude and longitude.
*/
List<Address> addresses = geocoder.getFromLocation(latitude, longitude, this.geocoderMaxResults);
return addresses;
} catch (IOException e) {
//e.printStackTrace();
Log.e("Gecoder", "Impossible to connect to Geocoder", e);
}
}
return null;
}
/**
* Try to get AddressLine
* @return null or addressLine
*/
public String getAddressLine(Context context) {
List<Address> addresses = getGeocoderAddress(context);
if (addresses != null && addresses.size() > 0) {
Address address = addresses.get(0);
String addressLine = address.getAddressLine(0);
return addressLine;
} else {
return null;
}
}
/**
* Try to get Locality
* @return null or locality
*/
public String getLocality(Context context) {
List<Address> addresses = getGeocoderAddress(context);
if (addresses != null && addresses.size() > 0) {
Address address = addresses.get(0);
String locality = address.getLocality();
return locality;
}
else {
return null;
}
}
}
答案 3 :(得分：0)
这是一个简单而有效的解决方案：
public static JSONObject getLocationInfo(String address) {
StringBuilder stringBuilder = new StringBuilder();
try {
address = address.replaceAll(" ","%20");
HttpPost httppost = new HttpPost("http://maps.google.com/maps/api/geocode/json?address=" + address + "&sensor=false");
HttpClient client = new DefaultHttpClient();
HttpResponse response;
stringBuilder = new StringBuilder();
response = client.execute(httppost);
HttpEntity entity = response.getEntity();
InputStream stream = entity.getContent();
int b;
while ((b = stream.read()) != -1) {
stringBuilder.append((char) b);
}
} catch (ClientProtocolException e) {
} catch (IOException e) {
}
JSONObject jsonObject = new JSONObject();
try {
jsonObject = new JSONObject(stringBuilder.toString());
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return jsonObject;
}
private static List<Address> getAddrByWeb(JSONObject jsonObject){
List<Address> res = new ArrayList<Address>();
try
{
JSONArray array = (JSONArray) jsonObject.get("results");
for (int i = 0; i < array.length(); i++)
{
Double lon = new Double(0);
Double lat = new Double(0);
String name = "";
try
{
lon = array.getJSONObject(i).getJSONObject("geometry").getJSONObject("location").getDouble("lng");
lat = array.getJSONObject(i).getJSONObject("geometry").getJSONObject("location").getDouble("lat");
name = array.getJSONObject(i).getString("formatted_address");
Address addr = new Address(Locale.getDefault());
addr.setLatitude(lat);
addr.setLongitude(lon);
addr.setAddressLine(0, name != null ? name : "");
res.add(addr);
}
catch (JSONException e)
{
e.printStackTrace();
}
}
}
catch (JSONException e)
{
e.printStackTrace();
}
return res;
}
现在简单地替换
geocoder.getFromLocation(locationAddress, 1);
带
getAddrByWeb(getLocationInfo(locationAddress));