如何在android工作室的回收器适配器中处理多次点击事件

Question

当我点击添加到购物车按钮时，我会显示另一个点击的产品。我想设置添加到购物车按钮，在增加和减少按钮后会显示可见性。

这是我的适配器代码。

"公共类PrdouctByCategoryAdapter扩展了RecyclerView.Adapter<PrdouctByCategoryAdapter.ViewHolder>｛

private Context mContext;
List<ProductByCategoryModel> productByCategoryModelList;
int quantity1 = 0;
private ProgressDialog pDialog;
CustomSharedPrefs objCustomSharedPrefs;
public PrdouctByCategoryAdapter(Context mContext, List<ProductByCategoryModel> productByCategoryModelList) {
this.mContext = mContext;
this.productByCategoryModelList= productByCategoryModelList;
}
@NonNull
@Override
public PrdouctByCategoryAdapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(mContext);
View view = inflater.inflate(R.layout.slide_main_item, parent, false);
return new ViewHolder(view);
}
@SuppressLint("SetTextI18n")
@Override
public void onBindViewHolder(@NonNull final ViewHolder holder, final int position) {
pDialog = CommonMethod.getProgressDialog(mContext);
objCustomSharedPrefs = new CustomSharedPrefs(mContext);
ProductByCategoryModel productByCategoryModel = productByCategoryModelList.get(position);
holder.qntyAmount.setText(productByCategoryModelList.get(position).getProduct_qty() + productByCategoryModelList.get(position).getProductUnit());
holder.productPrice.setText("Rs. " + String.valueOf(productByCategoryModelList.get(position).getProduct_mrp_price()) + " - ");
holder.productName.setText(productByCategoryModelList.get(position).getProduct_name());
Picasso.get().load(productByCategoryModelList.get(position).getMobile_icon()).into(holder.productImage);
int priceMain = productByCategoryModelList.get(position).getProduct_mrp_price();
holder.hinditextVeiw.setText("( " + productByCategoryModelList.get(position).getProduct_name_hindi() + " )");
holder.addtocartbtn.setOnClickListener(v -> {
if (mContext instanceof ViewProduct) {
if (Validation.validateString(productByCategoryModelList.get(position).getProduct_id())) {
((ViewProduct) mContext).addtoCartCall(productByCategoryModelList.get(position).getProduct_id(),
productByCategoryModelList.get(position).getCategory_id(),
productByCategoryModelList.get(position).getProduct_qty(),
priceMain,
productByCategoryModelList.get(position).getMember_id(),
productByCategoryModelList.get(position).getSubcategoryName());
holder.addtocartbtn.setVisibility(View.GONE);
holder.add_subs.setVisibility(View.VISIBLE);
holder.totalPrice.setText("₹" + String.valueOf(productByCategoryModel.getProduct_mrp_price()));
notifyDataSetChanged();
}
}

});

holder.plus.setOnClickListener(v -> {
if (mContext instanceof ViewProduct) {
try {
quantity1 = quantity1 + 1;
int productPrice = productByCategoryModelList.get(position).getProduct_mrp_price() * quantity1;
int valueQNty = productByCategoryModelList.get(position).getProduct_qty() * quantity1;
holder.quantity.setText(String.valueOf(quantity1));
holder.totalPrice.setText("₹" + String.valueOf(productPrice));
if (Validation.validateString(productByCategoryModelList.get(position).getProduct_id())) {
((ViewProduct) mContext).increaseQntyCall(productByCategoryModelList.get(position).getProduct_id(),
productByCategoryModelList.get(position).getCategory_id(),
String.valueOf(valueQNty),
productPrice,
productByCategoryModelList.get(position).getMember_id(),
productByCategoryModelList.get(position).getSubcategoryName());
notifyDataSetChanged();
}
} catch (Exception e) {
}
}

});

holder.minus.setOnClickListener(v -> {
try {

if (quantity1 != 1) {
if (mContext instanceof ViewProduct) {
quantity1 = quantity1 - 1;
int productPrice = productByCategoryModelList.get(position).getProduct_mrp_price() * quantity1;
int valueQNty = productByCategoryModelList.get(position).getProduct_qty() * quantity1;
holder.quantity.setText(String.valueOf(quantity1));
holder.totalPrice.setText("₹" + String.valueOf(productPrice));
if (Validation.validateString(productByCategoryModelList.get(position).getProduct_id())) {
((ViewProduct) mContext).increaseQntyCall(productByCategoryModelList.get(position).getProduct_id(),
productByCategoryModelList.get(position).getCategory_id(),
String.valueOf(valueQNty),
productPrice,
productByCategoryModelList.get(position).getMember_id(),
productByCategoryModelList.get(position).getSubcategoryName());
}
}
} else {
holder.addtocartbtn.setVisibility(View.VISIBLE);
holder.add_subs.setVisibility(View.GONE);
}
} catch (Exception e) {
}
notifyDataSetChanged();
});

}
@Override
public int getItemCount() {
return productByCategoryModelList.size();
}
static class ViewHolder extends RecyclerView.ViewHolder {
ImageView productImage, favourate, plus, minus;
TextView productName;
TextView productPrice;
TextView qntyAmount, quantity, totalPrice;
Button addtocartbtn;
TextView hinditextVeiw;
LinearLayout add_subs;

public ViewHolder(@NonNull View itemView) {
super(itemView);
productImage = itemView.findViewById(R.id.prodcutMainImage);
productName = itemView.findViewById(R.id.product_name_main_item);
productPrice = itemView.findViewById(R.id.pricePerqunaty);
qntyAmount = itemView.findViewById(R.id.peramountQunty);
//favourate = itemView.findViewById(R.id.img_favroute);
addtocartbtn = itemView.findViewById(R.id.button_add_toCart1);
plus = itemView.findViewById(R.id.plus1);
minus = itemView.findViewById(R.id.minus1);
quantity = itemView.findViewById(R.id.quantity23);
add_subs = itemView.findViewById(R.id.add_subs1);
totalPrice = itemView.findViewById(R.id.totalPrice);
hinditextVeiw= itemView.findViewById(R.id.hindiStringProdcut);
}
}

}

''

Answer 1

您可以使用接口轻松实现这一点。首先，您需要在适配器类中传递接口引用，如下面的

class SampleAdapter(
private val mContext: Context,
private val sampleModelList: ArrayList<SampleModel>,
private val onItemClickListener: AddItemToCartClickListener) : RecyclerView.Adapter<SampleAdapter.MyViewHolder>() {****

之后，您需要在适配器类中创建接口：

interface AddToCartListener {
fun onAddItemToCartClick(
position: Int,
view: View,
itemModel: SampleModel
)
}

您可以调用按钮点击事件中的界面，如

holder.itemView.setOnClickListener { view ->
onItemClickListener.onAddItemToCartClick(
position,
view,
itemModel
)
}

最后，只需要在Activity类中实现接口，就可以获得单个项的值。现在，您可以创建多个接口，并可以根据需要执行任何操作。

Answer 2

您可以在recylcerview 中使用处理多个事件的接口

请查看下面的示例

https://antonioleiva.com/recyclerview-listener/