Question

我正构建一个应用程序，使用lat long向Toast显示用户当前地址。我使用Geocoder将lat long转换成地址，但情况是，在某些设备上地址工作正常但在某些设备中它崩溃了。然后我在那些设备上调试应用程序崩溃，我发现在地理编码器行后它会跳转到捕获（异常），而不执行其他行。那么，有没有其他方法可以通过lat获取位置。

还有另一个问题是同一个问题here，但这确实没有提供太多解决方案，所以我再次提出问题。

我的Geocoder区块是

if (mLastLocation != null) {
        double latitude = mLastLocation.getLatitude();
        double longitude = mLastLocation.getLongitude();
        try {
            geocoder = new Geocoder(this, Locale.getDefault());
            addresses = geocoder.getFromLocation(latitude,longitude,1);
            if (addresses != null && addresses.size() > 0){
                String address = addresses.get(0).getAddressLine(0);
                String city = addresses.get(0).getLocality();
                String state = addresses.get(0).getAdminArea();
                String country = addresses.get(0).getCountryName();
                String postalCode = addresses.get(0).getPostalCode();
                Toast.makeText(getApplicationContext(), "Your address is: " +address+ " "+city+ " " + state+ "\n" +country+ " "+ postalCode, Toast.LENGTH_LONG).show();
            }

        }catch (Exception e){
            e.printStackTrace();
        }

Answer 1

您只需点击谷歌地图网络服务即可传递纬度和经度。它只是一个GET-Method网络服务。

http://maps.googleapis.com/maps/api/geocode/json?latlng=32,75&sensor=true

将lat和long替换为您自己的lat＆amp; long。

Answer 2

您可以使用此Google API获取与纬度和经度相关的完整信息。

http://maps.googleapis.com/maps/api/geocode/json?latlng=32,75&sensor=true

这里32是纬度，75是经度。

Answer 3

String city = getLocationCityName（lat，lang）;

public static String getLocationCityName(double lat, double lon) {
    JSONObject result = getLocationFormGoogle(lat + "," + lon);
    String city = getCityAddress(result);

    return getCityAddress(result);
}

protected static JSONObject getLocationFormGoogle(String placesName) {

    String apiRequest = "https://maps.googleapis.com/maps/api/geocode/json?latlng=" + placesName; //+ "&ka&sensor=false"
    HttpGet httpGet = new HttpGet(apiRequest);
    HttpClient client = new DefaultHttpClient();
    org.apache.http.HttpResponse response;
    StringBuilder stringBuilder = new StringBuilder();

    try {
        response = client.execute(httpGet);
        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) {

        e.printStackTrace();
    }

    return jsonObject;
}


protected static String getCityAddress(JSONObject result) {
    if (result.has("results")) {
        try {
            JSONArray array = result.getJSONArray("results");
            if (array.length() > 0) {
                JSONObject place = array.getJSONObject(0);
                JSONArray components = place.getJSONArray("address_components");
                for (int i = 0; i < components.length(); i++) {
                    JSONObject component = components.getJSONObject(i);
                    JSONArray types = component.getJSONArray("types");
                    for (int j = 0; j < types.length(); j++) {
                        if (types.getString(j).equals("locality")) {//city
                            String city = component.getString("long_name");
                            Log.d("city", city);

                            return component.getString("long_name");
                        }

                        if (types.getString(j).equals("postal_code")) {//pin
                            return component.getString("long_name");
                        }

                        if (types.getString(j).equals("country")) {//country
                            return component.getString("long_name");
                        }

                        if (types.getString(j).equals("administrative_area_level_1")) {//state
                            return component.getString("long_name");
                        }

                        if (types.getString(j).equals("administrative_area_level_2")) {
                            return component.getString("long_name");
                        }
                    }
                }
            }
        } catch (JSONException e) {
            e.printStackTrace();
        }
    }

    return null;
}

除了使用地理编码器

3 个答案: