Android 地理编码功能不如 iOS

Question

所以我有一个将地址（字符串）转换为坐标的函数。

这是 iOS 中的样子：

func setCoords(buildet: BuildingDetail) {

    let geoCoder = CLGeocoder()

    geoCoder.geocodeAddressString(buildet.address, completionHandler:
        {(placemarks: [AnyObject]!, error: NSError!) in

            if error != nil {
                println("Geocode failed with error: \(error.localizedDescription)")
            } else if placemarks.count > 0 {
                let placemark = placemarks[0] as! CLPlacemark
                let location = placemark.location
                buildet.lat = location.coordinate.latitude
                buildet.lon = location.coordinate.longitude
            }
            self.setupMarker(buildet)
    })
}

这是 Android 中的样子：

public static double[] getLatLongPositions(String address) throws Exception
{
    int responseCode = 0;
    String api = "http://maps.googleapis.com/maps/api/geocode/xml?address=" + URLEncoder.encode(address, "UTF-8") + "&sensor=true";
    System.out.println("URL : "+api);
    URL url = new URL(api);
    HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection();
    httpConnection.connect();
    responseCode = httpConnection.getResponseCode();
    if(responseCode == 200)
    {
        DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();;
        Document document = builder.parse(httpConnection.getInputStream());
        XPathFactory xPathfactory = XPathFactory.newInstance();
        XPath xpath = xPathfactory.newXPath();
        XPathExpression expr = xpath.compile("/GeocodeResponse/status");
        String status = (String)expr.evaluate(document, XPathConstants.STRING);
        if(status.equals("OK"))
        {
            expr = xpath.compile("//geometry/location/lat");
            String latitude = (String)expr.evaluate(document, XPathConstants.STRING);
            expr = xpath.compile("//geometry/location/lng");
            String longitude = (String)expr.evaluate(document, XPathConstants.STRING);
            return new double[] {Double.parseDouble(latitude), Double.parseDouble(longitude)};
        }
    }
    return new double[]{0,0};
}

现在，上面的 iOS 函数只运行 setupMarker 函数，其中 Android 方法 returns 坐标，没什么大不了的！

我遇到的问题是，我为两个函数提供了完全相同的地址参数。

iOSreturns所有坐标完美.

然而，Android 只有 returns 大约 30% 正确。

是否有一个 Android 函数等同于上面的 iOS 函数，或者只有一个可以正确地理编码的函数。

如您所见，Android 在此处调用了 API：

http://maps.googleapis.com/maps/api/geocode/xml?address=

我也测试过这个，效果不是很好，至少不如iOS。

我该怎么办？

编辑 - 一些示例（全部适用于 iOS）

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Answer 1

尝试使用 URL returns 格式的 JSON 数据，然后您可以解析并获取纬度和经度。这是一个例子：

public static void getLatLongFromAddress(String youraddress) {
String uri = "http://maps.google.com/maps/api/geocode/json?address=" +
              youraddress + "&sensor=false";
HttpGet httpGet = new HttpGet(uri);
HttpClient client = new DefaultHttpClient();
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) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
}

JSONObject jsonObject = new JSONObject();
try {
    jsonObject = new JSONObject(stringBuilder.toString());

    double lng = ((JSONArray)jsonObject.get("results")).getJSONObject(0)
        .getJSONObject("geometry").getJSONObject("location")
        .getDouble("lng");

    double lat = ((JSONArray)jsonObject.get("results")).getJSONObject(0)
        .getJSONObject("geometry").getJSONObject("location")
        .getDouble("lat");

    Log.d("latitude", "" + lat);
    Log.d("longitude", "" + lng);
} catch (JSONException e) {
    e.printStackTrace();
}

}

希望这对您有所帮助。

Android 地理编码功能不如 iOS

Android geocoding not functioning as well as iOS

java

android

google-maps

geocoding

ios