如何从超过500个地址获取纬度经度？

Question

我在数据库中有超过700个地址.我想区域划分他们.我已经实现了这段代码:

public LatLng getSingleLocationFromAddress(String strAddress)
{
    Geocoder coder = new Geocoder(this, Locale.getDefault());
    List<Address> address = null;
    Address location = null;
    GeoPoint p1 = null;
    LatLng temp = null;//new LatLng(26.0000, 121.0000);
    String strAddresNew = strAddress.replace(",", " ");
    try
    {
        address = coder.getFromLocationName(strAddresNew, 1);
        if (!address.isEmpty())
        {
            location = address.get(0);
            location.getLatitude();
            location.getLongitude();
            temp = new LatLng(location.getLatitude(), location.getLongitude());
            Log.d("Latlng : ", temp + "");
        } else
        {
            arrTemp.add(strAddress);
            System.out.println(arrTemp);
        }
    } catch (IOException e)
    {
        Toast.makeText(mContext, e.toString(), Toast.LENGTH_LONG).show();
        e.printStackTrace();
    } catch (Exception e)
    {
        e.printStackTrace();
    }
    return temp;
}

但问题是当我在循环中调用此方法时,如下所示:

Marker TP1 = googleMap.addMarker(new MarkerOptions().position(getSingleLocationFromAddress(fullAddress)));

coder.getFromLocationName(strAddresNew, 1);对于某些地址,该行返回null,例如,如果我有ArrayList7个地址,那么我只获得4-5个LatLong值.

Answer 1

使用下面的代码行...它会对您有帮助

在您的Oncreate或OncreatView之上声明这些变量

List<Address> From_geocode = null;
private double sLat, sLong;
private Geocoder geocoder;

比在你的oncreate或oncreateVIew中使用这些代码行

geocoder = new Geocoder(getActivity());

    try {
        From_geocode = geocoder.getFromLocationName("PUT THE ADDRESS HERE", 1);
    } catch (IOException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }
    if (From_geocode.size() > 0) {
        System.out.println("2");
        From_geocode.get(0).getLatitude(); // getting
        // latitude
        From_geocode.get(0).getLongitude();

        sLat = From_geocode.get(0).getLatitude();
        sLong = From_geocode.get(0).getLongitude();

        System.out.println("LATITUTE====="+sLat+"   LONGITUTE====="+sLong);

    }

并提供清单文件中的条目

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />