Retrofit - I/art：バックグラウンドスティッキー同時マークスイープGCフリー

Question

Retrofitで簡単なRESTリクエストを作成しようとしていますが、GCエラーが多発しています。私は本当にそれを修正する方法を知りません。私はエミュレータにメモリを追加しようとしましたが、問題はまだ発生します。

04-09 07:37:23.897 13396-13411/? I/art: Clamp target GC heap from 111MB to 96MB 
04-09 07:37:23.897 13396-13411/? I/art: Background partial concurrent mark sweep GC freed 3104(48KB) AllocSpace objects, 0(0B) LOS objects, 0% free, 95MB/96MB, paused 7.520ms total 194.127ms 
04-09 07:37:23.897 13396-13396/? I/art: WaitForGcToComplete blocked for 182.909ms for cause Alloc 
04-09 07:37:23.929 13396-13411/? I/art: Background sticky concurrent mark sweep GC freed 128(5KB) AllocSpace objects, 0(0B) LOS objects, 0% free, 95MB/96MB, paused 8.237ms total 31.761ms 
04-09 07:37:23.929 13396-13396/? I/art: WaitForGcToComplete blocked for 18.171ms for cause Alloc 
04-09 07:37:24.130 13396-13411/? I/art: Clamp target GC heap from 111MB to 96MB 
04-09 07:37:24.130 13396-13411/? I/art: Background partial concurrent mark sweep GC freed 5784(90KB) AllocSpace objects, 0(0B) LOS objects, 0% free, 95MB/96MB, paused 9.388ms total 200.412ms 
04-09 07:37:24.130 13396-13396/? I/art: WaitForGcToComplete blocked for 200.758ms for cause Alloc 
04-09 07:37:24.158 13396-13411/? I/art: Background sticky concurrent mark sweep GC freed 1710(34KB) AllocSpace objects, 0(0B) LOS objects, 0% free, 95MB/96MB, paused 6.897ms total 27.286ms 
04-09 07:37:24.158 13396-13396/? I/art: WaitForGcToComplete blocked for 18.297ms for cause Alloc 
04-09 07:37:24.346 13396-13396/? I/art: Clamp target GC heap from 111MB to 96MB 
04-09 07:37:24.346 13396-13396/? I/art: Alloc partial concurrent mark sweep GC freed 2092(33KB) AllocSpace objects, 0(0B) LOS objects, 0% free, 95MB/96MB, paused 5.943ms total 188.191ms 
04-09 07:37:24.370 13396-13396/? I/art: Alloc sticky concurrent mark sweep GC freed 0(0B) AllocSpace objects, 0(0B) LOS objects, 0% free, 95MB/96MB, paused 8.501ms total 23.440ms 
04-09 07:37:24.566 13396-13396/? I/art: Clamp target GC heap from 111MB to 96MB 
04-09 07:37:24.566 13396-13396/? I/art: Alloc concurrent mark sweep GC freed 9(12KB) AllocSpace objects, 0(0B) LOS objects, 0% free, 95MB/96MB, paused 6.105ms total 195.296ms 
04-09 07:37:24.566 13396-13411/? I/art: WaitForGcToComplete blocked for 395.241ms for cause Background 
04-09 07:37:24.598 13396-13411/? I/art: Background sticky concurrent mark sweep GC freed 0(0B) AllocSpace objects, 0(0B) LOS objects, 0% free, 95MB/96MB, paused 6.138ms total 29.195ms 
04-09 07:37:24.598 13396-13396/? I/art: WaitForGcToComplete blocked for 29.063ms for cause Alloc 
04-09 07:37:24.775 13396-13396/? I/art: Clamp target GC heap from 111MB to 96MB 
04-09 07:37:24.775 13396-13396/? I/art: Alloc partial concurrent mark sweep GC freed 16(56KB) AllocSpace objects, 1(54KB) LOS objects, 0% free, 95MB/96MB, paused 6.803ms total 177.429ms 

その後、POJOモデル Response<List<User>> response = usersCall.execute();を使用して例外

java.lang.RuntimeException: An error occurred while executing doInBackground() 
    android.os.AsyncTask$3.done(AsyncTask.java:309) 
    at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354) 
    at java.util.concurrent.FutureTask.setException(FutureTask.java:223) 
    at java.util.concurrent.FutureTask.run(FutureTask.java:242) 
    at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) 
at java.lang.Thread.run(Thread.java:818) 
Cause by: java.lang.IllegalStateException: Expected a string but was BEGIN_ARRAY at line 1 column 2 path $ 
at com.google.gson.stream.JsonReader.nextString(JsonReader.java:831) 
at com.google.gson.internal.bind.TypeAdapters$16.read(TypeAdapters.java:422) 
at com.google.gson.internal.bind.TypeAdapters$16.read(TypeAdapters.java:410) 
at retrofit2.converter.gson.GsonResponseBodyConverter.convert(GsonResponseBodyConverter.java:37) 
at retrofit2.converter.gson.GsonResponseBodyConverter.convert(GsonResponseBodyConverter.java:25) 
at retrofit2.ServiceMethod.toResponse(ServiceMethod.java:116) 
at retrofit2.OkHttpCall.parseResponse(OkHttpCall.java:211) 
at retrofit2.OkHttpCall.execute(OkHttpCall.java:174) 
at retrofit2.ExecutorCallAdapterFactory$ExecutorCallbackCall.execute(ExecutorCallAdapterFactory.java:89) 

との同期呼び出し、次の私のコードの同期呼び出しResponse<List<User>> response = usersCall.execute(); を作るとき：

Gson gson = 
       new GsonBuilder() 
         .registerTypeAdapter(Usuario.class, new UsuarioDeserializer()) 
         .registerTypeAdapter(Date.class, new CustomDateDeserializer()) 
         .create(); 

     Retrofit retrofit = new Retrofit.Builder() 
       .baseUrl(ConstantesUtil.URL_BASE) 
       .addConverterFactory(GsonConverterFactory.create(gson)) 
       .build(); 

     UsuariosAPI usuarioApi = retrofit.create(UsuariosAPI.class); 

     Usuario usuario = new Usuario(login, senha); 

     Call<List<Usuario>> usuarios = usuarioApi.getUsuarios(usuario); 

     usuarios.enqueue(new Callback<List<Usuario>>() { 
      @Override 
      public void onResponse(Call<List<Usuario>> call, Response<List<Usuario>> response) { 
       List<Usuario> usuarios = response.body(); 

       for (Usuario u: usuarios) { 
        Log.i(TAG, u.getNome()); 
       } 
      } 

      @Override 
      public void onFailure(Call<List<Usuario>> call, Throwable t) { 

      } 
     }); 

Answer 1

を私はこの問題（infinate GCループ）が起こる実現しますモデル（あなたの場合は "Usuario"）にシリアル化の問題を引き起こすメンバ変数があるとき。

public class Usuario { 
    @SerializedName("id") 
    public String id; 

    // the following will cause infinite loop of GC 
    public TextView problemView; 

    // use transient keyword will solve the problem in GC infinite loop 
    private transient TextView okView; 
} 

Answer 2

pojoクラスから任意のbytes配列とDrawableを削除するか、一時的にします。 お楽しみください