在地图Android中绘制路线

Question

我正在使用具有当前位置的Android地图。而且我也在两点之间使用绘制路线。但是我遇到了错误。

Android地图。

private String downloadUrl(String strUrl) throws IOException {

    String data = "";

    InputStream iStream = null;
    HttpURLConnection urlConnection = null;

    try {
        URL url = new URL(strUrl);

        // Creating an http connection to communicate with url
        urlConnection = (HttpURLConnection) url.openConnection();

        // Connecting to url
        urlConnection.connect();

        // Reading data from url
        iStream = urlConnection.getInputStream();

        BufferedReader br = new BufferedReader(new InputStreamReader(iStream));

        StringBuffer sb = new StringBuffer();

        String line = "";
        while ((line = br.readLine()) != null) {
            sb.append(line);
        }

        data = sb.toString();

        br.close();

    } catch (Exception e) {
        Log.d("Exception", e.toString());
    } finally {
        iStream.close();
        urlConnection.disconnect();
    }

    return data;
}

返回的数据显示以下错误。

  

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