关于android2.2地图定位的问题，取得了设备所在经纬度，得不到具体的地址的问题

http://blog.csdn.net/sun6223508/article/details/6559384

 

List<Address> addList = null;  
    Geocoder ge = new Geocoder(activity);  
    try {  
        addList = ge.getFromLocation(经度, 纬度,1);  
    } catch (IOException e) {  
        // TODO Auto-generated catch block  
        e.printStackTrace();  
    }  

 

在android2.1上面这段代码可以通过经纬度取得设备（或者说用户）所在的具体位置，而且很快。

 

但是在android2.2上面这段代码每次执行都是报IO异常的,通过经纬度得不到具体位置。这是因为上面这段代码在android2.2是一个BUG。

解决办法就是在异常处理的时候加上一个方法getaddressLocation(double lat, double lon, int maxResults) ；异常代码如下。

List<Address> addList = null;  
    Geocoder ge = new Geocoder(activity);  
    try {  
        addList = ge.getFromLocation(经度, 纬度,1);  
    } catch (IOException e) {  
        // TODO Auto-generated catch block  
    if("sdk".equals( Build.PRODUCT )) {  
            Log.d(TAG, "Geocoder doesn't work under emulation.");  
            addList= ReverseGeocode.getaddressLocation(location.getLatitude(), location.getLongitude(), 3);  
    } else{  
            e.printStackTrace();  
       }  
    }  

 

 

getaddressLocation(double lat, double lon, int maxResults) 代码如下

public static List<Address> getaddressLocation(double lat, double lon, int maxResults) {  
        String url = "http://maps.google.com/maps/geo?q=" + lat + "," + lon + "&output=json&sensor=false";  
                String response = "";  
                List<Address> results = new ArrayList<Address>();  
                HttpClient client = new DefaultHttpClient();  
                  
                try {  
                        HttpResponse hr = client.execute(new HttpGet(url));  
                        HttpEntity entity = hr.getEntity();  
                        BufferedReader br = new BufferedReader(new InputStreamReader(entity.getContent()));  
                        String buff = null;  
                        while ((buff = br.readLine()) != null)  
                                response += buff;  
                } catch (IOException e) {  
                        e.printStackTrace();  
                }  
                JSONArray responseArray = null;  
                try {  
                        JSONObject jsonObject = new JSONObject(response);  
                        responseArray = jsonObject.getJSONArray("Placemark");  
                } catch (JSONException e) {  
                        return results;  
                }  
                  
                for(int i = 0; i < responseArray.length() && i < maxResults-1; i++) {  
                        Address addy = new Address(Locale.getDefault());  
                        try {  
                                JSONObject jsl = responseArray.getJSONObject(i);  
                                String addressLine = jsl.getString("address");  
                                if(addressLine.contains(","))  
                                        addressLine = addressLine.split(",")[0];  
                                addy.setAddressLine(0, addressLine);  
                                jsl = jsl.getJSONObject("AddressDetails").getJSONObject("Country");  
                                addy.setCountryName(jsl.getString("CountryName"));  
                                addy.setCountryCode(jsl.getString("CountryNameCode"));  
                                jsl = jsl.getJSONObject("AdministrativeArea");  
                                addy.setAdminArea(jsl.getString("AdministrativeAreaName"));  
                    jsl = jsl.getJSONObject("Locality");  
                                addy.setLocality(jsl.getString("LocalityName"));  
                                addy.setThoroughfare(jsl.getJSONObject("Thoroughfare").getString("ThoroughfareName"));  
                        } catch (JSONException e) {  
                                e.printStackTrace();  
                                continue;  
                        }  
                        results.add(addy);  
                }  
                return results;  
}