RecyclerView Android Json

Question

どのようにデータを設定するのですかRecylerViewRetrofit。私は試しましたが、正常に実行できませんでした。ここで

は私のコードです：

JSONデータは次のとおりです。

{ 
"model": [ 
{ 
    "id": "1", 
    "brand_name": "Audi", 
    "brand_logo": "1495456122.", 

}, 
{ 
    "id": "3", 
    "brand_name": "BMW", 
    "brand_logo": "1495451144.", 

} 
] 
}  

BrandSelectActivity.java

public class BrandSelectActivity extends AppCompatActivity implements View.OnClickListener { 
ProgressDialog pDialog; 

Button btn_addVehicle; 
BrandListRecyclerAdapter adapter; 


RecyclerView recyclerView_brand; 
public ImageView carBrandImg; 
public TextView carBrandName; 

private static String TAG = BrandSelectActivity.class.getSimpleName(); 



@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_brand_select); 
    carBrandImg = (ImageView)findViewById(R.id.carBrandImg); 
    carBrandName = (TextView)findViewById(R.id.carBrandName); 
    recyclerView_brand = (RecyclerView) findViewById(R.id.recycler_view); 
    pDialog = new ProgressDialog(getApplicationContext()); 
    pDialog.setCancelable(true); 
    pDialog.setMessage("Please Wait..."); 
    pDialog.show(); 

    ArrayList<BrandModel> brandModelArrayList = new ArrayList<BrandModel>(); 

    BrandListRecyclerAdapter brandAdapter = new BrandListRecyclerAdapter(BrandSelectActivity.this, brandModelArrayList); 
    RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(getApplicationContext()); 
    recyclerView_brand.setLayoutManager(mLayoutManager); 
    recyclerView_brand.setAdapter(brandAdapter); 


    brandAdapter.setItemClickListener(new BrandListRecyclerAdapter.MyClickListerer() { 
     @Override 
     public void onItemClick(int position, View view) { 
      Intent sosIntent = new Intent(BrandSelectActivity.this, ModelSelectActivity.class); 
      startActivity(sosIntent); 
      overridePendingTransition(R.anim.slide_in_right, R.anim.slide_out_left); 
     } 
    }); 

    callBrandSelect(); 

} 


    private void callBrandSelect() { 

    ApiInterface apiService = 
    ApiClient.getClient().create(ApiInterface.class); 

    Call<BrandSelectResponse> call = apiService.saveBrand("1"); 
    call.enqueue(new Callback<BrandSelectResponse>() { 
     @Override 
     public void onResponse(Call<BrandSelectResponse> call, retrofit2.Response<BrandSelectResponse> response) { 
      BrandSelectResponse br= response.body(); 
      List<BrandSelectResponse.ModelBean> modelList = br.getModel(); 

      modelList.size(); 
      modelList.get(0).getBrand_logo(); 
      modelList.get(0).getBrand_name(); 


       pb.dismiss(); 
     } 

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

      Toast.makeText(BrandSelectActivity.this,"Opps ..!!Failed to 
    connect to our server.. Try Again later..",Toast.LENGTH_SHORT).show(); 

      Log.e(TAG, t.toString()); 
     } 
    }); 
    } 

@Override 
public void onClick(View v) { 
} 
} 

BrandListRecyclerAdapter.java

public class BrandListRecyclerAdapter extends RecyclerView.Adapter<BrandListRecyclerAdapter.MyViewHolder> { 

    Context mcontext; 
    List<BrandSelectResponse> brandModelArrayList; 
    public LayoutInflater inflater; 
    public static MyClickListerer myClickListerer; 


public BrandListRecyclerAdapter(Context context, ArrayList<BrandSelectResponse> brandModelArrayList) { 
    this.mcontext = context; 
    this.brandModelArrayList=brandModelArrayList; 
} 



@Override 
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 

    View view = LayoutInflater.from(parent.getContext()) 
      .inflate(R.layout.row_brand, parent, false); 

    return new MyViewHolder(view); 
} 

@Override 
public void onBindViewHolder(MyViewHolder holder, int position) { 
    BrandSelectResponse current = brandModelArrayList.get(position); 
    holder.setData((BrandSelectResponse) brandModelArrayList,position); 
    holder.carBrandName.setText(current.getBrand_name()); 
    holder.carBrandImg.setImageResource(current.getBrand_logo()); 
} 

public interface MyClickListerer { 
    void onItemClick(int position, View view); 
} 

public void setItemClickListener(MyClickListerer myClickListerer) { 
    this.myClickListerer = myClickListerer; 
} 

@Override 
public int getItemCount() { 
    return brandModelArrayList.size(); 
} 
    public class MyViewHolder extends RecyclerView.ViewHolder implements 
    View.OnClickListener { 
    public ImageView carBrandImg; 
    public TextView carBrandName; 
    BrandSelectResponse brandModelArrayList; 
    LinearLayout current; 
    int position; 

    public MyViewHolder(View itemView) { 

     super(itemView); 
     carBrandImg = (ImageView) itemView.findViewById(R.id.carBrandImg); 
     carBrandName = (TextView) itemView.findViewById(R.id.carBrandName); 



    } 


    public void setData(BrandSelectResponse current, int position) { 

     carBrandName.setText(brandModelArrayList.getBrand_name()); 
     carBrandImg.setImageResource(brandModelArrayList.getBrand_logo()); 

     this.position = position; 
     this.brandModelArrayList = current; 
    } 


    @Override 
    public void onClick(View v) { 
     myClickListerer.onItemClick(getAdapterPosition(), v); 
    } 
} 
    } 

BrandSelectResponse.java

public class BrandSelectResponse implements Serializable{ 


private List<ModelBean> model; 

public BrandSelectResponse(List<ModelBean> model) { 
    this.model = model; 
} 

public List<ModelBean> getModel() { 
    return model; 
} 

public void setModel(List<ModelBean> model) { 
    this.model = model; 
} 

public static class ModelBean { 


    private String id; 
    private String brand_name; 
    private String brand_logo; 


    public String getId() { 
     return id; 
    } 

    public void setId(String id) { 
     this.id = id; 
    } 

    public String getBrand_name() { 
     return brand_name; 
    } 

    public void setBrand_name(String brand_name) { 
     this.brand_name = brand_name; 
    } 

    public String getBrand_logo() { 
     return brand_logo; 
    } 

    public void setBrand_logo(String brand_logo) { 
     this.brand_logo = brand_logo; 
    } 

    public String getDescription() { 
     return description; 
    } 

    public void setDescription(String description) { 
     this.description = description; 
    } 

    } 
    } 

Answer 1

あなたは空のリストをアダプタに与えます。 あなたは決してデータをブランドモデルリストに追加します。

次回はlogcatを見てみると、どのような例外があり、どの行が問題なのですか。