Retrofit - I/art: Arka plan yapışkan eşzamanlı işaret süpürme GC serbest bırakıldı

Question

Retrofit ile basit bir REST isteği yapmaya çalışıyorum ve çok fazla GC hatası alıyorum. Bunu nasıl düzelteceğimi gerçekten bilmiyorum. Emülatöre daha fazla bellek koymaya çalıştım ama sorun hala devam ediyor. ne zaman yapmak senkron çağrı Response<List<User>> response = usersCall.execute(); aşağıdaki istisna

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) 

ve senkronizasyon çağrı sonra pojo modeli Response<List<User>> response = usersCall.execute(); kullanılarak

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 

Kodum: Bu sorun (infinate GC döngü) gerçekleştirmek

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

olur modeliniz (sizin durumunuzdaki "Usuario"), serileştirme sorununa neden olan bir üye değişkenine sahip olduğunda.

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

Herhangi bir bayt dizisini kaldırın ve pojo sınıfınızdan çizilebilir veya geçici hale getirin. Keyfini çıkarın