谷歌地图API第2版的Andr​​oid发行流方向

所以我的应用程序的一部分，建立一个导航方向字符串，然后试图解析JSON和借鉴我的地图中的折线路线。我先用建位置的变量或常量的Locale我的字符串。我结束了类似

So part of my application builds a navigation directions string and then attempts to parse the JSON and draw the polyline routes on my map. I first build my string using Location variables or Locale constants. I end up with something like

https://maps.googleapis.com/maps/api/directions/json?origin=Full Frame Documentary Film 
Festival, Durham, 27701&destination=601 W Peace St, Raleigh,27605&sensor=false&key={API_KEY}

• 有没有新线（我加了它的可读性）和{} API_KEY是我的实际API密钥。



这是我遇到的问题是，当我传递URL字符串我downloadUrl（字符串urlString）方法

The issue that I am running into is that when I pass that URL String to my downloadUrl(String urlString) method

private String downloadUrl(String urlString) throws IOException {
    Log.d(TAG, "Downloaded string = " + urlString);
    String data = "";
    InputStream stream = null;
    HttpURLConnection urlConnection = null;
    try {

        // Display our JSON in our browser (to show us how we need to implement our parser)
        Intent intent = new Intent(android.content.Intent.ACTION_VIEW, Uri.parse(urlString)); 
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        startActivity(intent);

        URL url = new URL(urlString);

        // Create a http connection to communicate with url
        urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.connect();

        // read in our data
        stream = urlConnection.getInputStream(); 
        BufferedReader br = new BufferedReader(new InputStreamReader(stream)); 
        StringBuffer sb = new StringBuffer();   

        // read in our data in, and append it as a single data string
        String line = "";
        while ((line = br.readLine()) != null) {
            Log.d(TAG,"url download stream: " + line);
            sb.append(line);
        }
        data = sb.toString();
        br.close();
    } 
    catch (Exception e) {
        e.printStackTrace();
    }
    finally {
        Log.d(TAG, "Downloaded data = " + data);
        stream.close();
        urlConnection.disconnect();
    }

    return data;
}    

问题是，在我的浏览器的JSON显示正确，我看到的一切，因为谷歌将其描述的文件中。但随后在以下几行，当我尝试打开到URL的连接，并拉成JSON解析字符串，我得到的通知System.err的

The thing is, the JSON displays in my browser correctly, I see everything as Google describes it in the documentation. But then in the following lines when I try to open a connection to the URL and pull the JSON into a string for parsing, I get the System.err notification

05-02 09:56:01.540: W/System.err(32232): java.io.FileNotFoundException: 
https://maps.googleapis.com/maps/api/directions/json?origin=Full Frame Documentary 
Film Festival, Durham, 27701&destination=601 W Peace St, Raleigh, 27605&sensor=false&key={API_KEY}

我想我的困惑来自于一个事实，即浏览器完美显示解析的地址，但随后的连接（我认为是）在同一台服务器返回一个FNFE。我错在假设是这种情况？如果是的话可能我的钥匙实际上是错的？令人困惑的是，这个code在其他应用程序的工作。

I guess my confusion comes in the fact that the browser displays the parsed address perfectly, but then the connection to (what I believe is) the same server returns a FNFE. Am I wrong in assuming that this is the case? If so might my key actually be wrong? The confusing thing is that this code works in another application.