Android Volley获取重定向url

public class RedirectRequest extends Request<String> {
    private final Response.Listener<String> mListener;

    public RedirectRequest(int method, String url, Response.Listener<String> listener, Response.ErrorListener errorListener) {
        super(method, url, errorListener);
        mListener = listener;
    }

    @Override
    protected Response<String> parseNetworkResponse(NetworkResponse response) {
        String redirectUrl = null;
        Map<String, String> headers = response.headers;
        if (headers != null && headers.containsKey("Location")) {
            redirectUrl = headers.get("Location");
        }
        return Response.success(redirectUrl, HttpHeaderParser.parseCacheHeaders(response));
    }

    @Override
    protected void deliverResponse(String response) {
        mListener.onResponse(response);
    }
}

RequestQueue queue = Volley.newRequestQueue(context);
String url = "http://example.com";
RedirectRequest request = new RedirectRequest(Request.Method.GET, url,
    new Response.Listener<String>() {
        @Override
        public void onResponse(String response) {
            // 处理重定向URL
            if (response != null) {
                // 打印重定向URL
                Log.d("Redirect URL", response);
            }
        }
    },
    new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            // 处理错误
        }
    });
queue.add(request);