Невозможно реализовать метод setClickListener() в RecyclerView

Question

Я использую RecyclerView и Adapter, я использую setClickListener(), чтобы щелкнуть элемент в представлении и перейдет к другому действию. но Im сталкивается с проблемой класса интерфейса ItemClickListener. Класс

Мой Интерфейс:

public interface ItemClickListener { 
    void onClick(View view, int position); 
} 

Мой адаптер:

public class RecyclerViewCategoryAdapter extends RecyclerView.Adapter<RecyclerViewCategoryAdapter.ViewHolder> { 
Context context; 

ImageLoader imageThumbLoader; 
private ItemClickListener clickListener; 
public RecyclerViewCategoryAdapter(ArrayList<HashMap<String, String>> getCarData, Context context){ 
    super(); 
    this.getCarData = getCarData; 
    this.context = context; 
} 

@Override 
public RecyclerViewCategoryAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
    View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.recycler_car_info, parent, false); 
    RecyclerViewCategoryAdapter.ViewHolder viewHolder = new RecyclerViewCategoryAdapter.ViewHolder(v); 
    return viewHolder; 
} 

@Override 
public void onBindViewHolder(RecyclerViewCategoryAdapter.ViewHolder viewholder, int position) { 
    ... 
} 
public int getDataAdapter() { 
    return getCarData == null ? 0 : getCarData.size(); 
} 
@Override 
public int getItemCount() { 

    return getDataAdapter(); // + 1; 
} 
public void setClickListener(ItemClickListener itemClickListener) { 
    this.clickListener = itemClickListener; 
} 
class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener { 

    public TextView titleName; 
    public NetworkImageView imageThumb; 

    public ViewHolder(View itemView) { 

     super(itemView); 

     titleName = (TextView) itemView.findViewById(R.id.titleName); 
     imageThumb = (NetworkImageView) itemView.findViewById(R.id.imageThumb); 

     itemView.setOnClickListener(this); 
    } 
    @Override 
    public void onClick(View view) { 
     if (clickListener != null) clickListener.onClick(view, getAdapterPosition()); 
    } 
    } 
} 

Мой RecyclerView класс (CategoryCarActivity) ОБНОВЛЕНО:

public class CategoryCarActivity extends AppCompatActivity implements AbsListView.OnScrollListener, AbsListView.OnItemClickListener, ItemClickListener { 

RecyclerViewCategoryAdapter recyclerViewAdapter; 
RecyclerView recyclerView; 
RecyclerView.LayoutManager recyclerViewLayoutManager; 
private LinearLayout linearLayoutScroll; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.recycler_category_adapter); 
    ... 
    recyclerView = (RecyclerView) findViewById(R.id.recyclerView); 
    recyclerView.setHasFixedSize(true); 
    recyclerViewLayoutManager = new LinearLayoutManager(this); 
    recyclerView.setLayoutManager(recyclerViewLayoutManager); 
    new LoadCategoryCars().execute(); 

    recyclerViewAdapter.setClickListener(this); 
} 

public void onClick(View view) { 
    Intent i = new Intent(getApplicationContext(), DetailListCarActivityDemo1.class); 

    String car_id = ((TextView) view.findViewById(R.id.manufacturer_id)).getText().toString(); 
    String price = ((TextView) view.findViewById(R.id.price)).getText().toString(); 

    Toast.makeText(getApplicationContext(), "Car Id: " + car_id + ", Price: " + price, Toast.LENGTH_SHORT).show(); 
    i.putExtra("car_id", car_id); 
    i.putExtra("price", price); 
    Log.i("Car ID: ", car_id); 
    Log.i("Price: ", price); 
    startActivity(i); 
} 
// Initialize Toolbar the first time 
@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    // Inflate the menu; this adds items to the action bar if it is present. 
    getMenuInflater().inflate(R.menu.map_icon_toolbar, menu); 
    return true; 
} 
@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    if (item.getItemId() == android.R.id.home) { 
     finish(); 
    } 
    return super.onOptionsItemSelected(item); 
} 
@Override 
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) { 
    Toast.makeText(this, "Item Clicked: " + position, Toast.LENGTH_SHORT).show(); 
} 

/** 
* Background Async Task to Load all tracks under one album 
* */ 
class LoadCategoryCars extends AsyncTask<String, String, String> { 
    @Override 
    protected void onPreExecute() { 
     super.onPreExecute(); 
     pDialog = new ProgressDialog(CategoryCarActivity.this); 
     pDialog.setMessage("Loading cars ..."); 
     pDialog.setIndeterminate(false); 
     pDialog.setCancelable(false); 
     pDialog.show(); 
    } 
    /** 
    * getting tracks json and parsing 
    * */ 
    protected String doInBackground(String... args) { 
     ...    
     } catch (JSONException e) { 
      e.printStackTrace(); 
     } 
     catch (UnsupportedEncodingException e) { 
      e.printStackTrace(); 
     } 
     return null; 
    } 
    /** 
    * After completing background task Dismiss the progress dialog 
    * **/ 
    protected void onPostExecute(String result) { 
     super.onPostExecute(result); 
     recyclerViewAdapter = new RecyclerViewCategoryAdapter(carsList, CategoryCarActivity.this); 
     recyclerViewAdapter.notifyDataSetChanged(); 
     recyclerView.setAdapter(recyclerViewAdapter); 
     // dismiss the dialog after getting all manufacturers 
     if (pDialog.isShowing()) 
      pDialog.dismiss(); 
    } 
    } 
} 

В строке (ОБНОВЛЕНО):

public class CategoryCarActivity extends AppCompatActivity implements AbsListView.OnScrollListener, AbsListView.OnItemClickListener, ItemClickListener { 

компилятор произойдет ошибка с сообщением (ОБНОВЛЕНО):

Class 'CategoryCarActivity' must either be declared abstract or implement abstract method 'onClick(View, int)' in 'ItemClickListener' 

Как исправить эту проблему? Большое спасибо !

Answer 1

Ваша деятельность требует реализации интерфейса!

public class CategoryCarActivity extends AppCompatActivity implements 
     AbsListView.OnScrollListener, AbsListView.OnItemClickListener, 
     ItemClickListener { 

public void onClick(View view, int position) { 
    // do your stuff here. 
} 

===============

Чтобы исправить последнюю проблему, необходимо переопределить абстрактный метод, объявленный в интерфейсе в деятельности. Для этого замените:

public void onClick(View view) { 
    Intent i = new Intent(getApplicationContext(), DetailListCarActivityDemo1.class); 

    String car_id = ((TextView) view.findViewById(R.id.manufacturer_id)).getText().toString(); 
    String price = ((TextView) view.findViewById(R.id.price)).getText().toString(); 

    Toast.makeText(getApplicationContext(), "Car Id: " + car_id + ", Price: " + price, Toast.LENGTH_SHORT).show(); 
    i.putExtra("car_id", car_id); 
    i.putExtra("price", price); 
    Log.i("Car ID: ", car_id); 
    Log.i("Price: ", price); 
    startActivity(i); 
} 

с:

@Override 
public void onClick(View view, int position) { 
    Intent i = new Intent(getApplicationContext(), DetailListCarActivityDemo1.class); 

    String car_id = ((TextView) view.findViewById(R.id.manufacturer_id)).getText().toString(); 
    String price = ((TextView) view.findViewById(R.id.price)).getText().toString(); 

    Toast.makeText(getApplicationContext(), "Car Id: " + car_id + ", Price: " + price, Toast.LENGTH_SHORT).show(); 
    i.putExtra("car_id", car_id); 
    i.putExtra("price", price); 
    Log.i("Car ID: ", car_id); 
    Log.i("Price: ", price); 
    startActivity(i); 
}