我有一个购物车，一次只能插入一个产品，但是现在我一次只能插入多个产品。我使用复选框来选择项目。
我需要更改什么才能允许将多个产品插入购物车？
这是我的适配器类：
public class AdapterPrice extends BaseAdapter {
ArrayList<ModelPrice> listPrice;
private Context context;
int selectedPosition = 0;
public AdapterPrice(Context context, ArrayList<ModelPrice> listPrice) {
this.context = context;
this.listPrice = listPrice;
}
@Override
public int getCount() {
return listPrice.size();
}
@Override
public Object getItem(int i) {
return null;
}
@Override
public long getItemId(int i) {
return 0;
}
@Override
public View getView(final int position, View view, ViewGroup viewGroup) {
final AdapterPrice.ViewHolder holder;
if (view == null) {
holder = new AdapterPrice.ViewHolder();
view = ((LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(R.layout.item_packing, null);
holder.txtOffer = view.findViewById(R.id.txtOffer);
holder.txtPrice = view.findViewById(R.id.txtPrice);
holder.txtQty = view.findViewById(R.id.txtQty);
//holder.radioWeight = view.findViewById(R.id.radioWeight);
holder.checkBox = view.findViewById(R.id.checkboxWeight);
holder.icMinus = view.findViewById(R.id.icMinus);
holder.icPlus = view.findViewById(R.id.icPlus);
view.setTag(holder);
} else {
holder = (AdapterPrice.ViewHolder) view.getTag();
}
//holder.radioWeight.setText((UtilMethods.decimalFormater(listPrice.get(position).getWeight())) + listPrice.get(position).getUnit());
holder.checkBox.setText((UtilMethods.decimalFormater(listPrice.get(position).getWeight())) + listPrice.get(position).getUnit());
double packMrpd = (double) listPrice.get(position).getQty() * listPrice.get(position).getMrp();
double offerMrpd = (double) listPrice.get(position).getQty() * listPrice.get(position).getSellMrp();
holder.txtPrice.setText("Rs." + UtilMethods.decimalFormater(packMrpd));
holder.txtOffer.setText("Rs." + UtilMethods.decimalFormater(offerMrpd));
holder.txtQty.setText(listPrice.get(position).getQty() + "");
/*holder.radioWeight.setChecked(position == selectedPosition);
holder.radioWeight.setTag(position);*/
holder.checkBox.setChecked(position == selectedPosition);
Log.d("POSITION CB>>>>>>",position+"");
//holder.checkBox.setTag(position);
if (holder.checkBox.isChecked()) {
String forString = "for " + UtilMethods.decimalFormater(listPrice.get(selectedPosition).getWeight()) + "" + listPrice.get(selectedPosition).getUnit();
SpannableString forStr = new SpannableString(forString);
forStr.setSpan(new UnderlineSpan(), 0, forString.length(), 0);
//txtFor.setText(forStr);
//txtOferPrice.setText("Rs." + UtilMethods.decimalFormater(listPrice.get(selectedPosition).getSellMrp()) + "");
double saveMrp = ((double) listPrice.get(position).getQty() * listPrice.get(position).getMrp()) - ((double) listPrice.get(position).getQty() * listPrice.get(position).getSellMrp());
txtSAve.setText("Rs." + (UtilMethods.decimalFormater(saveMrp)) + "");
if (saveMrp <= 0) {
offerLayout.setVisibility(View.GONE);
}
mQty = listPrice.get(position).getQty();
mMrp = listPrice.get(position).getMrp();
mSellMrp = listPrice.get(position).getSellMrp();
mweight = listPrice.get(position).getWeight();
mUnit = listPrice.get(position).getUnit();
seletUnit = (1 * selectedPosition);
}
/*holder.checkBox.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
selectedPosition = (Integer) view.getTag();
notifyDataSetChanged();
}
});*/
holder.icMinus.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
int cQty = listPrice.get(position).getQty();
if (cQty > 1) {
cQty = listPrice.get(position).getQty() - 1;
listPrice.get(position).setQty(cQty);
// double totalMrp = (double) listPrice.get(position).getQty() * listPrice.get(position).getMrp();
//holder.txtPrice.setText((String.format("%.2f", totalMrp)) + "");
/* if (position == selectedPosition) {
double saveMrp = totalMrp - (listPrice.get(selectedPosition).getSellMrp() * (double) listPrice.get(position).getQty());
// txtSAve.setText("Rs."+saveMrp + "");
}*/
notifyDataSetChanged();
}
}
});
holder.icPlus.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
int cQty = listPrice.get(position).getQty();
cQty = listPrice.get(position).getQty() + 1;
listPrice.get(position).setQty(cQty);
//double totalMrp = (double) listPrice.get(position).getQty() * listPrice.get(position).getMrp();
// holder.txtPrice.setText((String.format("%.2f", totalMrp)) + "");
/* if (position == selectedPosition) {
double saveMrp = totalMrp - (listPrice.get(selectedPosition).getSellMrp() * (double) listPrice.get(position).getQty());
// txtSAve.setText(saveMrp + "");
}*/
notifyDataSetChanged();
}
});
return view;
}
public class ViewHolder {
private TextView txtPrice, txtQty, txtOffer;
private RadioButton radioWeight;
CheckBox checkBox;
private ImageView icPlus, icMinus;
}
}
这是我通过SQLIte将商品插入购物车的地方：
private void addToCArt() {
ModelCart mcart = new ModelCart();
mcart.setProductName(Config.LIST_SINGAL_PRODUCT.get(tempPosition).getProductName());
mcart.setPid(Config.LIST_SINGAL_PRODUCT.get(tempPosition).getPid());
mcart.setImageUrl(Config.LIST_SINGAL_PRODUCT.get(tempPosition).getImageTag1());
List<String> attrId = new ArrayList<>();
for (ModelPrice mmp : Config.LIST_SINGAL_PRODUCT.get(tempPosition).getListPrice()) {
attrId.add(mmp.getWid() + "," + mmp.getWeight() + "," + mmp.getUnit());
}
String aData = TextUtils.join("-", attrId);
mcart.setQty(mQty);
mcart.setWeight(mweight);
mcart.setUnit(mUnit);
mcart.setMrp(mMrp);
mcart.setSellMrp(mSellMrp);
mcart.setAttributeData(aData);
mcart.setSelectUnit(seletUnit);
mcart.setSelecAttrId((Config.LIST_SINGAL_PRODUCT.get(tempPosition).getListPrice()).get(seletUnit).getWid());
db.insetCArt(mcart);
/*int isQty = db.isProduct(Config.LIST_SINGAL_PRODUCT.get(tempPosition).getPid());
if (isQty != -1 && isQty != 0) {
int tQ = mQty + isQty;
mcart.setQty(tQ);
db.updateCart(mcart);
} else {
db.insetCArt(mcart);
}*/
/*CartFragment orderFrg = new CartFragment();
Bundle args = new Bundle();
orderFrg.setArguments(args);
getFragmentManager().beginTransaction().replace(R.id.frmae, orderFrg).addToBackStack(null).commit();
*/
}