Retrofit 2 OkHttpClientキャッシングが動作しない

Question

ここで問題は、私は私のアプリケーションのキャッシングを実装しようとしていると私はこのチュートリアルAndroid: Cache network requests for offline access with Retrofit2 and OkHTTP3に従ってください。インターネットに接続していないとき悲しいことに、キャッシュされた応答が

Toast.makeText（のgetContext（）、のgetContext（）の代わりに、表示されない。getResources（）。のgetString（R.string.error_failed_to_load_posts）、トースト。 LENGTH_SHORT）.show（）;

が実行されます。だから誰でも私が間違っていることを教えてくれる？または、私にこの問題の答えを得るための案内をしますか？あなたが私に尋ねるなら、必要に応じて追加情報を投稿します。以下は、特定の関数のコード全体です。

private void loadHomeLoggedPosts(String uid) { 
    progressBar.setVisibility(View.VISIBLE); 

    OkHttpClient client = new OkHttpClient 
      .Builder() 
      .cache(new Cache(getContext().getCacheDir(), 10 * 1024 * 1024)) // 10 MB 
      .addInterceptor(new Interceptor() { 
       @Override public okhttp3.Response intercept(Chain chain) throws IOException { 
        Request request = chain.request(); 
        if (Utils.isNetworkAvailable(getContext())) { 
         request = request.newBuilder().header("Cache-Control", "public, max-age=" + 60).build(); 
        } else { 
         request = request.newBuilder().header("Cache-Control", "public, only-if-cached, max-stale=" + 60 * 60 * 24 * 7).build(); 
        } 
        return chain.proceed(request); 
       } 
      }) 
      .build(); 

    Gson gson = new GsonBuilder() 
      .setLenient() 
      .create(); 

    Retrofit retrofit = new Retrofit.Builder() 
      .baseUrl(getResources().getString(R.string.app_base_url)) 
      .client(client) 
      .addConverterFactory(GsonConverterFactory.create(gson)) 
      .build(); 

    RequestInterface request = retrofit.create(RequestInterface.class); 
    Call<Classes> call = request.homeLoggedPosts(uid); 
    call.enqueue(new Callback<Classes>() { 
     @Override 
     public void onResponse(Call<Classes> call, Response<Classes> response) { 
      Classes jsonResponse = response.body(); 
      if (jsonResponse!=null) { 
       homePosts = jsonResponse.getHomePosts(); 
       homeLoggedInAdapter = new HomeLoggedInAdapter(homePosts); 
       recyclerView.setAdapter(homeLoggedInAdapter); 
       homeLoggedInAdapter.notifyDataSetChanged(); 
      } 
      else { 
       Toast.makeText(getContext(), getContext().getResources().getString(R.string.error_failed_to_load_posts), Toast.LENGTH_SHORT).show(); 
      } 
      progressBar.setVisibility(View.INVISIBLE); 
     } 

     @Override 
     public void onFailure(Call<Classes> call, Throwable t) { 
      progressBar.setVisibility(View.INVISIBLE); 
      Toast.makeText(getContext(), getContext().getResources().getString(R.string.error_failed_to_load_posts), Toast.LENGTH_SHORT).show(); 
      Log.d("ERROR", t.getMessage()); 
     } 
    }); 
} 

EDIT：私は次のように呼び出して同じフラグメントに二つの機能をしました：

if (FirebaseAuth.getInstance().getCurrentUser()!=null) { 
     loadHomeLoggedPosts(FirebaseAuth.getInstance().getCurrentUser().getUid()); 
    } 
    else { 
     loadHomeNotLoggedPosts(); 
    } 

私は上記loadHomeLoggedPostsのコードを掲載しました。

RequestInterface request = retrofit.create(RequestInterface.class); 
Call<Classes> call = request.homeNotLoggedPosts(); 

Farmaan Elahis'答えはなく、loadHomeLoggedPostsため、loadHomeNotLoggedPostsのために働く：loadHomeNotLoggedPostsは、彼は違いだけで、このセクションであることと同じです。どんな助けも高く評価されます。ありがとう！

Okhttpログ：ログが大きすぎてここに完全に投稿できない部分が編集されました。

拳スタートアップ：

08-27 18:35:29.426 32673-32673/com.appsoflife.microstories I/System.out: Cache CREATED! 
08-27 18:35:29.452 32673-2498/com.appsoflife.microstories D/OkHttp: --> POST http://my_web_site.com/jacob/micro_stories/queries/home_logged.php http/1.1 
08-27 18:35:29.452 32673-2498/com.appsoflife.microstories D/OkHttp: Content-Type: application/x-www-form-urlencoded 
08-27 18:35:29.452 32673-2498/com.appsoflife.microstories D/OkHttp: Content-Length: 32 
08-27 18:35:29.452 32673-2498/com.appsoflife.microstories D/OkHttp: uid=MY_USER_ID 
08-27 18:35:29.452 32673-2498/com.appsoflife.microstories D/OkHttp: --> END POST (32-byte body) 
08-27 18:35:29.460 32673-2363/com.appsoflife.microstories D/AppTracker: App Event: start 
08-27 18:35:29.502 32673-32673/com.appsoflife.microstories E/RecyclerView: No adapter attached; skipping layout 
08-27 18:35:29.592 32673-32679/com.appsoflife.microstories I/art: Do partial code cache collection, code=27KB, data=30KB 
08-27 18:35:29.593 32673-32679/com.appsoflife.microstories I/art: After code cache collection, code=26KB, data=29KB 
08-27 18:35:29.593 32673-32679/com.appsoflife.microstories I/art: Increasing code cache capacity to 128KB 
08-27 18:35:29.614 32673-32673/com.appsoflife.microstories W/PropertyValuesHolder: Method set() with type float not found on target class class me.zhanghai.android.materialprogressbar.IndeterminateHorizontalProgressDrawable$RectTransformX 
08-27 18:35:33.088 32673-2498/com.appsoflife.microstories D/OkHttp: <-- 200 OK http://my_web_site.com/jacob/micro_stories/queries/home_logged.php (3634ms) 
08-27 18:35:33.088 32673-2498/com.appsoflife.microstories D/OkHttp: Date: Sun, 27 Aug 2017 13:05:29 GMT 
08-27 18:35:33.088 32673-2498/com.appsoflife.microstories D/OkHttp: Server: Apache/2.4.25 
08-27 18:35:33.088 32673-2498/com.appsoflife.microstories D/OkHttp: X-Powered-By: PHP/5.6.30 
08-27 18:35:33.088 32673-2498/com.appsoflife.microstories D/OkHttp: Vary: Accept-Encoding,User-Agent 
08-27 18:35:33.088 32673-2498/com.appsoflife.microstories D/OkHttp: Keep-Alive: timeout=5 
08-27 18:35:33.088 32673-2498/com.appsoflife.microstories D/OkHttp: Connection: Keep-Alive 
08-27 18:35:33.088 32673-2498/com.appsoflife.microstories D/OkHttp: Transfer-Encoding: chunked 
08-27 18:35:33.088 32673-2498/com.appsoflife.microstories D/OkHttp: Content-Type: text/html; charset=UTF-8 
08-27 18:35:33.088 32673-2498/com.appsoflife.microstories D/OkHttp: Cache-Control: max-age=120 
08-27 18:35:37.890 32673-2653/com.appsoflife.microstories I/FirebaseCrash: Sending crashes 
08-27 18:35:41.664 32673-32695/com.appsoflife.microstories W/art: Suspending all threads took: 9.530ms 
08-27 18:35:41.681 32673-2498/com.appsoflife.microstories D/OkHttp: 

MY_JSON_OUTPUT_TOO_LONG_TO_POST 

08-27 18:35:41.721 32673-2498/com.appsoflife.microstories D/OkHttp: <-- END HTTP (3297402-byte body) 

SECOND TIME：

08-27 18:37:35.904 5089-5089/com.appsoflife.microstories I/System.out: Cache CREATED! 
08-27 18:37:35.922 5089-5190/com.appsoflife.microstories D/OkHttp: --> POST http://my_web_site.com/jacob/micro_stories/queries/home_logged.php http/1.1 
08-27 18:37:35.922 5089-5190/com.appsoflife.microstories D/OkHttp: Content-Type: application/x-www-form-urlencoded 
08-27 18:37:35.922 5089-5190/com.appsoflife.microstories D/OkHttp: Content-Length: 32 
08-27 18:37:35.922 5089-5190/com.appsoflife.microstories D/OkHttp: uid=MY_USER_ID 
08-27 18:37:35.922 5089-5190/com.appsoflife.microstories D/OkHttp: --> END POST (32-byte body) 
08-27 18:37:35.934 5089-5135/com.appsoflife.microstories D/AppTracker: App Event: start 
08-27 18:37:35.979 5089-5089/com.appsoflife.microstories E/RecyclerView: No adapter attached; skipping layout 
08-27 18:37:36.058 5089-5094/com.appsoflife.microstories I/art: Do partial code cache collection, code=26KB, data=30KB 
08-27 18:37:36.058 5089-5094/com.appsoflife.microstories I/art: After code cache collection, code=25KB, data=29KB 
08-27 18:37:36.058 5089-5094/com.appsoflife.microstories I/art: Increasing code cache capacity to 128KB 
08-27 18:37:36.083 5089-5089/com.appsoflife.microstories W/PropertyValuesHolder: Method set() with type float not found on target class class me.zhanghai.android.materialprogressbar.IndeterminateHorizontalProgressDrawable$RectTransformX 
08-27 18:37:39.860 5089-5190/com.appsoflife.microstories D/OkHttp: <-- 200 OK http://my_web_site.com/jacob/micro_stories/queries/home_logged.php (3937ms) 
08-27 18:37:39.860 5089-5190/com.appsoflife.microstories D/OkHttp: Date: Sun, 27 Aug 2017 13:07:36 GMT 
08-27 18:37:39.860 5089-5190/com.appsoflife.microstories D/OkHttp: Server: Apache/2.4.25 
08-27 18:37:39.860 5089-5190/com.appsoflife.microstories D/OkHttp: X-Powered-By: PHP/5.6.30 
08-27 18:37:39.860 5089-5190/com.appsoflife.microstories D/OkHttp: Vary: Accept-Encoding,User-Agent 
08-27 18:37:39.860 5089-5190/com.appsoflife.microstories D/OkHttp: Keep-Alive: timeout=5 
08-27 18:37:39.860 5089-5190/com.appsoflife.microstories D/OkHttp: Connection: Keep-Alive 
08-27 18:37:39.860 5089-5190/com.appsoflife.microstories D/OkHttp: Transfer-Encoding: chunked 
08-27 18:37:39.860 5089-5190/com.appsoflife.microstories D/OkHttp: Content-Type: text/html; charset=UTF-8 
08-27 18:37:39.860 5089-5190/com.appsoflife.microstories D/OkHttp: Cache-Control: max-age=120 
08-27 18:37:49.883 5089-5426/com.appsoflife.microstories I/FirebaseCrash: Sending crashes 
08-27 18:37:51.044 5089-5190/com.appsoflife.microstories D/OkHttp: 

JSON_OUTPUT_TOO_LONG_TO_POST 

read: unexpected EOF! 

Answer 1

は、あなたは2をするために有効であるオンラインキャッシュの両方を持つことができ、クライアントをokhttp構築するために以下のコードを使用することができます7日間有効なオフラインキャッシュも含まれます。

PS：あなたが接続されてインターネットで初めてアプリを開いて検討する必要があり、それは例外

private static OkHttpClient provideOkHttpClient() 
     { 
      return new OkHttpClient.Builder() 
        .addInterceptor(provideOfflineCacheInterceptor()) 
        .addNetworkInterceptor(provideCacheInterceptor()) 
        .cache(provideCache()) 
        .build(); 
     } 

     private static Cache provideCache() 
     { 
      Cache cache = null; 
      try 
      { 
       cache = new Cache(new File(getApplicationContext().getInstance().getCacheDir(), "http-cache"), 
         10 * 1024 * 1024); // 10 MB 
      } 
      catch (Exception e) 
      { 
       Timber.e(e, "Could not create Cache!"); 
      } 
      return cache; 
     } 

     public static Interceptor provideCacheInterceptor() 
     { 
      return new Interceptor() 
      { 
       @Override 
       public Response intercept (Chain chain) throws IOException 
       { 
        Response response = chain.proceed(chain.request()); 

        // re-write response header to force use of cache 
        CacheControl cacheControl = new CacheControl.Builder() 
          .maxAge(2, TimeUnit.MINUTES) 
          .build(); 

        return response.newBuilder() 
          .header(CACHE_CONTROL, cacheControl.toString()) 
          .build(); 
       } 
      }; 
     } 

     public static Interceptor provideOfflineCacheInterceptor() 
     { 
      return new Interceptor() 
      { 
       @Override 
       public Response intercept (Chain chain) throws IOException 
       { 
        Request request = chain.request(); 

        if (!AndroidUtils.isNetworkAvailable()) 
        { 
         CacheControl cacheControl = new CacheControl.Builder() 
           .maxStale(7, TimeUnit.DAYS) 
           .build(); 

         request = request.newBuilder() 
           .cacheControl(cacheControl) 
           .build(); 
        } 

        return chain.proceed(request); 
       } 
      }; 
     }