android - Reddit oAuth 2 for Android "userless"app with Retrofit

Question

我正在尝试在基于 Android 的“无用户”应用程序中实现 Reddit oAuth2(每个使用 Reddit 内容的应用程序都必须有这个 implemented)并且我正在遵循这些指南。

1. 我 registered an app并获取相应的 client_id。
2. 我正在关注 API guidelines和 this for Retrofit以便正确编写 Android 代码。

因此，我编写了两种方法来解决这个问题，但似乎都不起作用。相应 fragment 中的调用对于这两个选项是相同的，如下所示:

    public void oAuth(){

    String bodyString = "grant_type=" + "https://oauth.reddit.com/grants/installed_client"
                       + "&device_id=" + UUID.randomUUID().toString();

    TypedInput requestBody = new TypedByteArray("application/x-www-form-urlencoded", bodyString.getBytes(Charset.forName("UTF-8")));

    RedditAPI.sRedditAuth().redditAuth(requestBody, new Callback<TokenResponse>() {
        @Override
        public void success(TokenResponse tokenResponse, Response response) {
            Log.d("OATH_TAG", "oAuth() | YAY! :)");
        }

        @Override
        public void failure(RetrofitError error) {
            Log.d("OATH_TAG", "oAuth() | NOOOOOoooooo.... :(");
        }
      });
    }

选项 1:

• Retrofit 界面:

    public interface RedditAuthInterface {
    @POST(Urlz.REDDIT_OATH2_PATH)
    void redditAuth(@Body TypedInput body, Callback<TokenResponse> result);
  
   }
  
     //the adapter
     public static RedditAuthInterface sRedditAuth() {
     if (sRedditAuthInterface == null) {
     RestAdapter restAdapter = new RestAdapter
                                    .Builder()
                                    .setClient(getAuthClient())
                                    .setEndpoint(Urlz.BASE_REDDIT_URL)
                                    .build();
      sRedditAuthInterface = restAdapter.create(RedditAuthInterface.class);
    }
  
    return sRedditAuthInterface;
   }
  
  
  /* support methods */
  private static OkClient getAuthClient() {
  
  final OkHttpClient okHttpClient = new OkHttpClient();
  okHttpClient.setReadTimeout(Static.READ_TIMEOUT, TimeUnit.SECONDS);
  okHttpClient.setConnectTimeout(Static.CONNECT_TIMEOUT, TimeUnit.SECONDS);
  /*okHttpClient.setAuthenticator(new Authenticator() {
      @Override
      public Request authenticate(Proxy proxy, Response response) throws IOException {
          String credential = Credentials.basic(BldCnfg.REDDIT_CLIENT_ID, BldCnfg.REDDIT_PASS);
          return response.request().newBuilder().header("Authorization", credential).build();
      }
  
      @Override
      public Request authenticateProxy(Proxy proxy, Response response) throws IOException {
          return null;
      }
   });*/
  
   okHttpClient.networkInterceptors().add(OAUTH_INTERCEPTOR);
  
    return new OkClient(okHttpClient);
  }
  
  private static final Interceptor OAUTH_INTERCEPTOR = new Interceptor() {
  @Override
  public Response intercept(Chain chain) throws IOException {
      Response originalResponse = chain.proceed(chain.request());
      String credentials = BldCnfg.REDDIT_CLIENT_ID + ":" + BldCnfg.REDDIT_PASS; // REDDIT_PASS = "" as by API guides
      String string = "Basic " + Base64.encodeToString(credentials.getBytes(), Base64.NO_WRAP);
  
      originalResponse.header("Authorization", string);
      originalResponse.header("Accept", "application/json");
      return originalResponse;
       }
   };
  

• 结果:

RetrofitError: 401 Unauthorized

选项 2:

• Retrofit 界面:

     public interface RedditAuthInterface {
    @POST(Urlz.REDDIT_OATH2_PATH)
    void redditAuth(@Body TypedInput body, Callback<TokenResponse> result);
  
     }
  
  
       //the adapter
        public static RedditAuthInterface sRedditAuth() {
        if (sRedditAuthInterface == null) {
      RestAdapter restAdapter = new RestAdapter
                                    .Builder()
                                    .setClient(getConfuguredClient())
                                      .setRequestInterceptor(getRequestInerceptorPass())
                                    .setEndpoint(Urlz.BASE_REDDIT_URL)
                                    .build();
      sRedditAuthInterface = restAdapter.create(RedditAuthInterface.class);
  }
  
  return sRedditAuthInterface;
  }
  
  
  /* support methods */
  
  public static RequestInterceptor getRequestInerceptorPass() {
  RequestInterceptor rqInter = new RequestInterceptor() {
      @Override
      public void intercept(RequestFacade request) {
  
          String credentials = BldCnfg.REDDIT_CLIENT_ID + ":" + BldCnfg.REDDIT_PASS; // REDDIT_PASS = "" as by API guides
          String string = "Basic " + Base64.encodeToString(credentials.getBytes(), Base64.NO_WRAP);
          request.addHeader("Authorization", string);
          request.addHeader("Accept", "application/json");
        }
      };
  
  return rqInter;
  }
  
  
  private static OkClient getConfuguredClient() {
  
  final OkHttpClient okHttpClient = new OkHttpClient();
  okHttpClient.setReadTimeout(Static.READ_TIMEOUT, TimeUnit.SECONDS);
  okHttpClient.setConnectTimeout(Static.CONNECT_TIMEOUT, TimeUnit.SECONDS);
  return new OkClient(okHttpClient);
  }
  

• 结果:

似乎我得到的响应是空的(我只得到范围的“*”)。成功的响应如下所示:

和这样的标题:

你知道我做错了什么吗？有没有人这样做过？

The official Reddit github wiki缺少 Android 示例(尽管几乎所有其他语言都有)。

Answer 1

我之前遇到过同样的问题并制作了这个 library在 Android 中处理 OAuth2。该库是 Retrofit 的扩展，它简化了针对 OAuth 2 提供商的身份验证过程。