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我想從recyclerview列表中刪除特定的項目，但我不知道如何處理它。我不能使用notifyItemRemoved方法，因爲我得到一個錯誤，說該方法不能從靜態上下文中使用。正如你所看到的，我在適配器的視圖持有者中擁有大部分事件偵聽器，因爲它更方便。RecyclerView項目刪除
這裏是我的代碼
public class CartListAdapter extends RecyclerView.Adapter<CartListAdapter.RestaurantHolder>
{
List<CartItem> cartList;
private static String LOG_TAG = "MyRecyclerViewAdapter";
private static MyClickListener myClickListener;
static Context context;
public static class RestaurantHolder extends RecyclerView.ViewHolder
{
TextView cartItem;
TextView cartPrice;
TextView cartQuantity;
ImageView increaseIcon;
ImageView decreaseIcon;
ImageView deleteIcon;
int selectedPosition;
int quantity;
double price;
Boolean priceStored = false;
RestaurantHolder(View itemView)
{
super(itemView);
cartItem = (TextView)itemView.findViewById(R.id.cartItem);
cartPrice = (TextView)itemView.findViewById(R.id.cartItemPrice);
cartQuantity = (TextView)itemView.findViewById(R.id.itemQuantity);
increaseIcon = (ImageView)itemView.findViewById(R.id.increase);
decreaseIcon = (ImageView)itemView.findViewById(R.id.decrease);
deleteIcon = (ImageView)itemView.findViewById(R.id.delete);
itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
selectedPosition = getPosition();
Log.i(LOG_TAG,"Position = "+selectedPosition);
}
});
increaseIcon.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(!priceStored)
price = Double.parseDouble(cartPrice.getText().toString());
priceStored = true;
quantity = Integer.parseInt(cartQuantity.getText().toString()) + 1;
cartQuantity.setText(String.valueOf(quantity));
cartPrice.setText(String.valueOf(price * quantity));
}
});
decreaseIcon.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(quantity > 1) {
quantity = Integer.parseInt(cartQuantity.getText().toString()) - 1;
cartQuantity.setText(String.valueOf(quantity));
cartPrice.setText(String.valueOf(Double.parseDouble(cartPrice.getText().toString())-price));
}else{
Toast.makeText(context,"Minimum order limit",Toast.LENGTH_SHORT).show();
}
}
});
deleteIcon.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
selectedPosition = getPosition();
Log.i(LOG_TAG,"Removal Position = "+selectedPosition);
//remove(selectedPosition);
}
});
}
}
CartListAdapter(Context context)
{
this.context = context;
cartList = new ArrayList<CartItem>();
}
public void addItem(CartItem cartItem)
{
cartList.add(cartItem);
}
public void remove(int position)
{
cartList.remove(position);
notifyItemRemoved(position);
}
@Override
public void onAttachedToRecyclerView(RecyclerView recyclerView)
{
super.onAttachedToRecyclerView(recyclerView);
}
@Override
public RestaurantHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.cart_item,viewGroup,false);
RestaurantHolder restaurantHolder = new RestaurantHolder(view);
return restaurantHolder;
}
@Override
public void onBindViewHolder(RestaurantHolder restaurantHolder, int i) {
restaurantHolder.cartQuantity.setText(String.valueOf(cartList.get(i).quantity));
restaurantHolder.cartPrice.setText(String.valueOf(cartList.get(i).price));
restaurantHolder.cartItem.setText(cartList.get(i).cartItem);
}
@Override
public int getItemCount() {
return cartList.size();
}
public interface MyClickListener {
public void onItemClick(int position, View v);
}
}