android实现使用RecyclerView详细

显示页面代码：activity_category_inventory.xml代码：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".CategoryInventoryActivity"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="30dp"android:orientation="horizontal"><TextViewandroid:id="@+id/TextviewBorrow_userNames1"android:layout_width="120dp"android:layout_height="wrap_content"android:layout_weight="1"android:text="@string/category_inventory_in_user_name"android:textAlignment="viewEnd"android:textColor="@color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/TextviewIn_userNames"android:layout_width="130dp"android:layout_height="wrap_content"android:layout_weight="1"android:text="@string/category_inventory_in_user_name"android:textColor="@color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/TextView_category_inventory_in_time"android:layout_width="130dp"android:layout_height="wrap_content"android:layout_weight="1"android:text="@string/category_inventory_in_time"android:textAlignment="viewEnd"android:textColor="@color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/textViewnowcategory_inventory_in_time"android:layout_width="180dp"android:layout_height="wrap_content"android:layout_weight="1"android:text="@string/category_inventory_in_time"android:textColor="@color/black"android:textSize="14sp" /></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="440dp"android:layout_marginTop="5dp"android:orientation="horizontal"><ScrollViewandroid:layout_width="fill_parent"android:layout_height="440dp"><HorizontalScrollViewandroid:layout_width="match_parent"android:layout_height="440dp"><RelativeLayoutandroid:layout_width="match_parent"android:layout_height="440dp"android:orientation="horizontal"><!--  此处省略的组件的配置  --><LinearLayoutandroid:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><LinearLayoutandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:orientation="horizontal"><TextViewandroid:id="@+id/TextView_id"android:layout_width="50dp"android:layout_height="wrap_content"android:background="@drawable/border_background"android:text="@string/txt_id"android:textAlignment="viewEnd"android:textColor="#005500"android:textSize="14sp"android:textStyle="bold" /><TextViewandroid:id="@+id/tvAssetname"android:layout_width="200dp"android:layout_height="wrap_content"android:layout_weight="1"android:textStyle="bold"android:background="@drawable/border_background"android:text="@string/txt_assetname"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/TextView_in_number"android:layout_width="140dp"android:layout_height="wrap_content"android:layout_weight="1"android:textStyle="bold"android:background="@drawable/border_background"android:text="@string/txt_category_inventory_number"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="14sp" />
<!--                          <TextView-->
<!--                                android:id="@+id/TextView_do"-->
<!--                                android:layout_width="100dp"-->
<!--                                android:layout_height="wrap_content"-->
<!--                                android:layout_weight="1"-->
<!--                                android:textStyle="bold"-->
<!--                                android:background="@drawable/border_background"-->
<!--                                android:text="@string/txt_category_inventory_do"-->
<!--                                android:textAlignment="center"-->
<!--                                android:textColor="@android:color/black"-->
<!--                                android:textSize="14sp" />--><TextViewandroid:id="@+id/TextView_data"android:layout_width="250dp"android:layout_height="wrap_content"android:layout_weight="1"android:textStyle="bold"android:background="@drawable/border_background"android:text="@string/txt_deviceNo"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/TextView_state"android:layout_width="70dp"android:layout_height="wrap_content"android:textStyle="bold"android:background="@drawable/border_background"android:text="@string/txt_state"android:textAlignment="center"android:textColor="#550000"android:textSize="14sp" /><TextViewandroid:id="@+id/tvCategoryNo"android:layout_width="200dp"android:layout_height="wrap_content"android:layout_weight="1"android:textStyle="bold"android:background="@drawable/border_background"android:text="@string/txt_categoryNo"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/tvCategoryName"android:layout_width="200dp"android:layout_height="wrap_content"android:layout_weight="1"android:textStyle="bold"android:background="@drawable/border_background"android:text="@string/txt_categoryName"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/TextView_EPC"android:layout_width="180dp"android:layout_height="wrap_content"android:layout_weight="1"android:textStyle="bold"android:background="@drawable/border_background"android:text="@string/txt_tid"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/tvwarehouseNo"android:layout_width="300dp"android:layout_height="wrap_content"android:layout_weight="1"android:textStyle="bold"android:background="@drawable/border_background"android:text="@string/txt_warehouseName"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/tvwarehouseName"android:layout_width="300dp"android:layout_height="wrap_content"android:layout_weight="1"android:textStyle="bold"android:background="@drawable/border_background"android:text="@string/txt_warehouseName"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/tvLocationNo"android:layout_width="200dp"android:layout_height="wrap_content"android:layout_weight="1"android:textStyle="bold"android:background="@drawable/border_background"android:text="@string/txt_locationName"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/tvLocationName"android:layout_width="200dp"android:layout_height="wrap_content"android:layout_weight="1"android:textStyle="bold"android:background="@drawable/border_background"android:text="@string/txt_locationName"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/tvSIM"android:layout_width="100dp"android:layout_height="wrap_content"android:layout_weight="1"android:background="@drawable/border_background"android:textStyle="bold"android:text="@string/txt_SIM"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/tvSupplier_name"android:layout_width="80dp"android:layout_height="wrap_content"android:layout_weight="1"android:background="@drawable/border_background"android:textStyle="bold"android:text="@string/txt_supplier_name"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/tvModel"android:layout_width="90dp"android:layout_height="wrap_content"android:layout_weight="1"android:background="@drawable/border_background"android:textStyle="bold"android:text="@string/txt_model"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/tvFirmware_version"android:layout_width="90dp"android:layout_height="wrap_content"android:layout_weight="1"android:background="@drawable/border_background"android:textStyle="bold"android:text="@string/txt_firmware_version"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/tvequimentName"android:layout_width="120dp"android:layout_height="wrap_content"android:layout_weight="1"android:textStyle="bold"android:background="@drawable/border_background"android:text="@string/txt_equimentName"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/tvRemarks1"android:layout_width="150dp"android:layout_height="wrap_content"android:layout_weight="1"android:background="@drawable/border_background"android:textStyle="bold"android:text="@string/txt_remarks1"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/tvRemarks2"android:layout_width="150dp"android:layout_height="wrap_content"android:layout_weight="1"android:background="@drawable/border_background"android:textStyle="bold"android:text="@string/txt_remarks2"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/tvRemarks3"android:layout_width="150dp"android:layout_height="wrap_content"android:layout_weight="1"android:textStyle="bold"android:background="@drawable/border_background"android:text="@string/txt_remarks3"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/tvRemarks4"android:layout_width="150dp"android:layout_height="wrap_content"android:layout_weight="1"android:background="@drawable/border_background"android:textStyle="bold"android:text="@string/txt_remarks4"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/tvRemarks5"android:layout_width="150dp"android:layout_height="wrap_content"android:layout_weight="1"android:background="@drawable/border_background"android:textStyle="bold"android:text="@string/txt_remarks5"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/tvCount2"android:layout_width="50dp"android:layout_height="wrap_content"android:textStyle="bold"android:background="@drawable/border_background"android:text="@string/count"android:textAlignment="center"android:textSize="14sp" /><TextViewandroid:id="@+id/TextView_RSSI"android:layout_width="100dp"android:layout_height="wrap_content"android:layout_weight="1"android:textStyle="bold"android:background="@drawable/border_background"android:text="@string/txt_rssi"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/tvCreateup_date"android:layout_width="90dp"android:layout_height="wrap_content"android:layout_weight="1"android:textStyle="bold"android:background="@drawable/border_background"android:text="@string/txt_createupDate"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/tvAssetNo"android:layout_width="200dp"android:layout_height="wrap_content"android:layout_weight="1"android:textStyle="bold"android:background="@drawable/border_background"android:text="@string/txt_asset_no"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="14sp" /><TextViewandroid:id="@+id/tvAssetIDs"android:layout_width="210dp"android:layout_height="wrap_content"android:layout_weight="1"android:textStyle="bold"android:background="@drawable/border_background"android:text="@string/txt_category_inventory_asset_id"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="14sp" /></LinearLayout><androidx.recyclerview.widget.RecyclerViewandroid:id="@+id/RecyclerView"android:layout_width="match_parent"android:layout_height="match_parent"android:visibility="visible" /><ListViewandroid:id="@+id/lvContent2"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_weight="1"android:visibility="gone"android:scrollbars="horizontal|vertical" /></LinearLayout></RelativeLayout></HorizontalScrollView></ScrollView></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginBottom="3dp"><CheckBoxandroid:id="@+id/All_checkbox"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="全选"android:focusable="false"android:focusableInTouchMode="false" /><TextViewandroid:id="@+id/tvCardCount2"android:layout_width="30dp"android:layout_height="wrap_content"android:layout_gravity="center"android:layout_marginLeft="1dp"android:gravity="center"android:text="0"android:textColor="#FF0000"android:textSize="24sp" /><Buttonandroid:id="@+id/btnScan2"android:layout_width="60dp"android:layout_height="40dp"android:layout_marginLeft="3dp"android:background="@drawable/button_style"android:text="@string/scan"android:textColor="@android:color/white"android:textSize="18sp" /><Buttonandroid:id="@+id/btnClear2"android:layout_width="60dp"android:layout_height="40dp"android:layout_marginLeft="3dp"android:background="@drawable/button_style"android:text="@string/clear"android:textColor="@android:color/white"android:textSize="18sp" /><Buttonandroid:id="@+id/btnSave2"android:layout_width="60dp"android:layout_height="40dp"android:layout_marginLeft="3dp"android:background="@drawable/button_style"android:text="@string/btn_category_inventory_in"android:textColor="@android:color/white"android:textSize="18sp" /><Buttonandroid:id="@+id/btnReturnInventory2"android:layout_width="60dp"android:layout_height="40dp"android:layout_marginLeft="3dp"android:background="@drawable/button_style"android:text="@string/btnQueryReturn"android:textColor="@android:color/white"android:textSize="18sp" /></LinearLayout>
</LinearLayout>

item_recycler_view.xml代码：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="110dp"android:orientation="horizontal"><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="100dp"android:layout_marginBottom="10dp"android:background="@color/gray1"android:orientation="horizontal"><LinearLayoutandroid:layout_width="390dp"android:layout_height="100dp"android:orientation="vertical"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="60dp"android:orientation="horizontal"><CheckBoxandroid:id="@+id/pro_checkbox"android:layout_width="wrap_content"android:layout_height="wrap_content"android:focusable="false"android:focusableInTouchMode="false" /><TextViewandroid:id="@+id/TextView_TaskId"android:layout_width="20dp"android:layout_height="60dp"android:gravity="center"android:text="@string/txt_category_inventory_all_count"android:textAlignment="viewStart"android:textColor="@color/colorblack" /><TextViewandroid:id="@+id/TextView_TaskName"android:layout_width="200dp"android:layout_height="60dp"android:gravity="center"android:text="@string/stockitem"android:textColor="@color/colorblack" /></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="40dp"android:orientation="horizontal"><TextViewandroid:id="@+id/TextView_Count1"android:layout_width="75dp"android:layout_height="match_parent"android:gravity="center"android:text="@string/txt_category_inventory_all"android:textAlignment="center"android:textColor="@color/colorblack" /><TextViewandroid:id="@+id/TextView_AllCount"android:layout_width="120dp"android:layout_height="match_parent"android:gravity="center"android:text="@string/txt_category_inventory_all_count"android:textAlignment="viewStart"android:textColor="@color/colorblack" /><!--        <Button--><!--            android:id="@+id/btn_minus"--><!--            android:layout_width="60dp"--><!--            android:layout_height="40dp"--><!--            android:layout_marginLeft="5dp"--><!--            android:layout_marginTop="5dp"--><!--            android:layout_marginRight="10dp"--><!--            android:layout_marginBottom="5dp"--><!--            android:layout_weight="0.25"--><!--            android:background="@drawable/button_style"--><!--            android:gravity="center"--><!--            android:text="@string/btndetail"--><!--            android:textColor="@color/colorwhite"--><!--            android:textSize="16sp" />--><!-- 减号按钮 --><TextViewandroid:id="@+id/btnMinus"android:layout_width="40dp"android:layout_height="40dp"android:background="@drawable/circle_button2"android:text="——"android:textAlignment="center"android:textColor="#FFFFFF"android:textSize="26sp" /><EditTextandroid:id="@+id/EditText_In_number"android:layout_width="65dp"android:layout_height="match_parent"android:layout_marginLeft="2dp"android:layout_marginRight="2dp"android:layout_marginBottom="2dp"android:background="@drawable/border_background"android:inputType="number"android:textAlignment="center" /><!-- 加号按钮 --><TextViewandroid:id="@+id/btnPlus"android:layout_width="40dp"android:layout_height="40dp"android:background="@drawable/circle_button"android:text="+"android:textAlignment="center"android:textColor="#FFFFFF"android:textSize="26sp" /><!--        <Button--><!--            android:id="@+id/btn_add"--><!--            android:layout_width="60dp"--><!--            android:layout_height="40dp"--><!--            android:layout_marginLeft="5dp"--><!--            android:layout_marginTop="5dp"--><!--            android:layout_marginRight="10dp"--><!--            android:layout_marginBottom="5dp"--><!--            android:layout_weight="0.25"--><!--            android:background="@drawable/button_style"--><!--            android:gravity="center"--><!--            android:text="@string/btndetail"--><!--            android:textColor="@color/colorwhite"--><!--            android:textSize="16sp" />--></LinearLayout></LinearLayout><TextViewandroid:id="@+id/tvDeviceNo"android:layout_width="250dp"android:layout_height="100dp"android:layout_marginLeft="0dp"android:layout_weight="1"android:background="@drawable/textview_right_border_simple"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="12sp" /><TextViewandroid:id="@+id/tvState"android:layout_width="73dp"android:layout_height="100dp"android:layout_marginLeft="0dp"android:layout_weight="1"android:background="@drawable/textview_right_border_simple"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="12sp" /><TextViewandroid:id="@+id/tv_categoryNo"android:layout_width="200dp"android:layout_height="100dp"android:layout_marginLeft="0dp"android:layout_weight="1"android:background="@drawable/textview_right_border_simple"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="12sp" /><TextViewandroid:id="@+id/tv_categoryName"android:layout_width="200dp"android:layout_height="100dp"android:layout_marginLeft="0dp"android:layout_weight="1"android:background="@drawable/textview_right_border_simple"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="12sp" /><TextViewandroid:id="@+id/tvContent"android:layout_width="180dp"android:layout_height="100dp"android:layout_marginLeft="0dp"android:layout_weight="1"android:background="@drawable/textview_right_border_simple"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="12sp" /><TextViewandroid:id="@+id/tv_warehouseNo"android:layout_width="300dp"android:layout_height="100dp"android:layout_marginLeft="0dp"android:layout_weight="1"android:background="@drawable/textview_right_border_simple"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="12sp" /><TextViewandroid:id="@+id/tv_warehouseName"android:layout_width="300dp"android:layout_height="100dp"android:layout_marginLeft="0dp"android:layout_weight="1"android:background="@drawable/textview_right_border_simple"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="12sp" /><TextViewandroid:id="@+id/tv_locationNo"android:layout_width="200dp"android:layout_height="100dp"android:layout_marginLeft="0dp"android:layout_weight="1"android:background="@drawable/textview_right_border_simple"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="12sp" /><TextViewandroid:id="@+id/tv_locationName"android:layout_width="200dp"android:layout_height="100dp"android:layout_marginLeft="0dp"android:layout_weight="1"android:background="@drawable/textview_right_border_simple"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="12sp" /><TextViewandroid:id="@+id/tv_SIM"android:layout_width="100dp"android:layout_height="100dp"android:layout_marginLeft="0dp"android:layout_weight="1"android:background="@drawable/textview_right_border_simple"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="12sp" /><TextViewandroid:id="@+id/tv_supplier_name"android:layout_width="85dp"android:layout_height="100dp"android:layout_marginLeft="0dp"android:layout_weight="1"android:background="@drawable/textview_right_border_simple"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="12sp" /><TextViewandroid:id="@+id/tv_model"android:layout_width="90dp"android:layout_height="100dp"android:layout_marginLeft="0dp"android:layout_weight="1"android:background="@drawable/textview_right_border_simple"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="12sp" /><TextViewandroid:id="@+id/tv_firmware_version"android:layout_width="90dp"android:layout_height="100dp"android:layout_marginLeft="0dp"android:layout_weight="1"android:background="@drawable/textview_right_border_simple"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="12sp" /><TextViewandroid:id="@+id/tv_equimentName"android:layout_width="120dp"android:layout_height="100dp"android:layout_marginLeft="0dp"android:layout_weight="1"android:background="@drawable/textview_right_border_simple"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="12sp" /><TextViewandroid:id="@+id/tv_remarks1"android:layout_width="150dp"android:layout_height="100dp"android:layout_marginLeft="0dp"android:layout_weight="1"android:background="@drawable/textview_right_border_simple"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="12sp" /><TextViewandroid:id="@+id/tv_remarks2"android:layout_width="150dp"android:layout_height="100dp"android:layout_marginLeft="0dp"android:layout_weight="1"android:background="@drawable/textview_right_border_simple"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="12sp" /><TextViewandroid:id="@+id/tv_remarks3"android:layout_width="155dp"android:layout_height="100dp"android:layout_marginLeft="0dp"android:layout_weight="1"android:background="@drawable/textview_right_border_simple"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="12sp" /><TextViewandroid:id="@+id/tv_remarks4"android:layout_width="150dp"android:layout_height="100dp"android:layout_marginLeft="0dp"android:layout_weight="1"android:background="@drawable/textview_right_border_simple"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="12sp" /><TextViewandroid:id="@+id/tv_remarks5"android:layout_width="150dp"android:layout_height="100dp"android:layout_marginLeft="0dp"android:layout_weight="1"android:background="@drawable/textview_right_border_simple"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="12sp" /><TextViewandroid:id="@+id/tvCount"android:layout_width="50dp"android:layout_height="100dp"android:background="@drawable/textview_right_border_simple"android:textAlignment="center"android:textSize="12sp" /><TextViewandroid:id="@+id/tvRssi"android:layout_width="100dp"android:layout_height="100dp"android:background="@drawable/textview_right_border_simple"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="12sp" /><TextViewandroid:id="@+id/tv_Createup_date"android:layout_width="90dp"android:layout_height="100dp"android:layout_weight="1"android:background="@drawable/textview_right_border_simple"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="12sp" /><TextViewandroid:id="@+id/tv_assetNo"android:layout_width="200dp"android:layout_height="100dp"android:layout_weight="1"android:background="@drawable/textview_right_border_simple"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="12sp" /><TextViewandroid:id="@+id/tv_assetId"android:layout_width="200dp"android:layout_height="100dp"android:layout_weight="1"android:background="@drawable/textview_right_border_simple"android:textAlignment="center"android:textColor="@android:color/black"android:textSize="12sp" /></LinearLayout>
</LinearLayout>

java代码：

package com.uhf200.demo.ui.adapter;import android.content.Context;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.TextView;import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;import com.uhf200.demo.R;
import com.uhf200.demo.ui.model.PojoCard;import java.util.HashMap;
import java.util.List;
import java.util.Map;// 假设使用 RecyclerView 和 ViewHolder 模式
public class ShoppingInCartAdapter extends RecyclerView.Adapter<ShoppingInCartAdapter.ViewHolder> {public List<PojoCard> cartItems; // 购物车数据列表private OnQuantityChangeListener listener; // 回调接口（可选）private Map<String, TextWatcher> watcherMap = new HashMap<String, TextWatcher>();private Context context;// ViewHolder 内部类public static class ViewHolder extends RecyclerView.ViewHolder {CheckBox checkBox;//  ImageView icon;EditText num;TextView name,price,type,reduce,add,id,tv_AssetName,tvDeviceNo,tvContent,tvCount,tv_AllCount,tvRssi,tv_SIM,tv_supplier_name, tv_model, tv_firmware_version,tv_remarks1,tv_remarks2,tv_remarks3,tv_remarks4,tv_remarks5,tv_equimentName,tv_assetNo,tv_categoryNo,tv_categoryName,tv_warehouseNo,tv_warehouseName,tv_locationNo,tv_locationName,tv_Createup_date,tvState,tv_assetId;// TextView tvName, tvQuantity;// Button btnAdd, btnSubtract;private LayoutInflater inflater;public ViewHolder(@NonNull View view) {super(view);
//            tvName = itemView.findViewById(R.id.item_name);
//            tvQuantity = itemView.findViewById(R.id.item_quantity);
//            btnAdd = itemView.findViewById(R.id.btn_add);
//            btnSubtract = itemView.findViewById(R.id.btn_subtract);//  view = inflater.inflate(R.layout.category_inventory_listitem,  parent,false);checkBox=(CheckBox) view.findViewById(R.id.pro_checkbox);id=(TextView) view.findViewById(R.id.TextView_TaskId);tv_AssetName=(TextView) view.findViewById(R.id.TextView_TaskName);num=(EditText) view.findViewById(R.id.EditText_In_number);tv_AllCount=(TextView) view.findViewById(R.id.TextView_AllCount);tvDeviceNo=(TextView) view.findViewById(R.id.tvDeviceNo);tvContent=(TextView) view.findViewById(R.id.tvContent);tvCount=(TextView) view.findViewById(R.id.tvCount);tvRssi=(TextView) view.findViewById(R.id.tvRssi);tv_SIM=(TextView) view.findViewById(R.id.tv_SIM);tv_supplier_name=(TextView) view.findViewById(R.id.tv_supplier_name);tv_model=(TextView) view.findViewById(R.id.tv_model);tv_firmware_version=(TextView) view.findViewById(R.id.tv_firmware_version);tv_remarks1=(TextView) view.findViewById(R.id.tv_remarks1);tv_remarks2=(TextView) view.findViewById(R.id.tv_remarks2);tv_remarks3=(TextView) view.findViewById(R.id.tv_remarks3);tv_remarks4=(TextView) view.findViewById(R.id.tv_remarks4);tv_remarks5=(TextView) view.findViewById(R.id.tv_remarks5);tv_equimentName=(TextView) view.findViewById(R.id.tv_equimentName);tv_assetNo=(TextView) view.findViewById(R.id.tv_assetNo);tv_categoryNo=(TextView) view.findViewById(R.id.tv_categoryNo);tv_categoryName=(TextView) view.findViewById(R.id.tv_categoryName);tv_warehouseNo=(TextView) view.findViewById(R.id.tv_warehouseNo);tv_warehouseName=(TextView) view.findViewById(R.id.tv_warehouseName);tv_locationNo=(TextView) view.findViewById(R.id.tv_locationNo);tv_locationName=(TextView) view.findViewById(R.id.tv_locationName);tvState=(TextView) view.findViewById(R.id.tvState);tv_assetId=(TextView) view.findViewById(R.id.tv_assetId);tv_Createup_date=(TextView) view.findViewById(R.id.tv_Createup_date);add=(TextView) view.findViewById(R.id.btnPlus);reduce=(TextView) view.findViewById(R.id.btnMinus);}public void bindData(PojoCard pojoCard) {
//            title.setText(item.getTitle());
//            price.setText(String.valueOf(item.getPrice()));id.setText(pojoCard.getId()+"");tv_AssetName.setText(pojoCard.getAsset_name().toString());num.setText(pojoCard.getOut_number()+"");tv_AllCount.setText(pojoCard.getAll_number()+"");tvDeviceNo.setText(pojoCard.getDevice_no().toString());tvContent.setText(pojoCard.getContent().toString());tvCount.setText(pojoCard.getCount()+"");tvRssi.setText(pojoCard.getRssi().toString());tv_SIM.setText(pojoCard.getSim().toString());tv_supplier_name.setText(pojoCard.getSupplier_name().toString());tv_model.setText(pojoCard.getModel().toString());tv_firmware_version.setText(pojoCard.getFirmware_version().toString());tv_remarks1.setText(pojoCard.getRemarks1().toString());tv_remarks2.setText(pojoCard.getRemarks2().toString());tv_remarks3.setText(pojoCard.getRemarks3().toString());tv_remarks4.setText(pojoCard.getRemarks4().toString());tv_remarks5.setText(pojoCard.getRemarks5().toString());tv_equimentName.setText(pojoCard.getEquiment_name().toString());tv_assetNo.setText(pojoCard.getAsset_no().toString());tv_categoryNo.setText(pojoCard.getCategory_no().toString());tv_categoryName.setText(pojoCard.getCategory_name().toString());tv_warehouseNo.setText(pojoCard.getWarehouse_no().toString());tv_warehouseName.setText(pojoCard.getWarehouse_name().toString());tv_locationNo.setText(pojoCard.getLocation_no().toString());tv_locationName.setText(pojoCard.getLocation_name().toString());tvState.setText(pojoCard.getState().toString());tv_assetId.setText(pojoCard.getId()+"");checkBox.setChecked(pojoCard.isCheckBox());}}// 更新整个数据源（可选）public void updateData(List<PojoCard> newItems) {cartItems = newItems;notifyDataSetChanged();}// 构造方法public ShoppingInCartAdapter(List<PojoCard> cartItems, OnQuantityChangeListener listener) {this.cartItems = cartItems;this.listener = listener;}public ShoppingInCartAdapter() {}// 构造函数public ShoppingInCartAdapter(List<PojoCard> items, Context context) {this.cartItems = items;this.context = context;}@NonNull@Overridepublic ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {View view = LayoutInflater.from(context).inflate(R.layout.item_recycler_view, parent, false);return new ViewHolder(view);}@Overridepublic void onBindViewHolder(@NonNull ViewHolder holder, int position) {PojoCard pojoCard = cartItems.get(position);
//        holder.tvName.setText(item.getName());
//        holder.tvQuantity.setText(String.valueOf(item.getQuantity()));
// 移除旧监听器if (watcherMap.containsKey(pojoCard.getId())) {holder.num.removeTextChangedListener(watcherMap.get(pojoCard.getId()));}holder.id.setText((position+1)+"");holder.tv_AssetName.setText(pojoCard.getAsset_name().toString());holder.num.setText(pojoCard.getIn_number()+"");holder.tv_AllCount.setText(pojoCard.getAll_number()+"");holder.tvDeviceNo.setText(pojoCard.getDevice_no().toString());holder.tvContent.setText(pojoCard.getContent().toString());holder.tvCount.setText(pojoCard.getCount()+"");holder.tvRssi.setText(pojoCard.getRssi().toString());holder.tv_SIM.setText(pojoCard.getSim().toString());holder.tv_supplier_name.setText(pojoCard.getSupplier_name().toString());holder.tv_model.setText(pojoCard.getModel().toString());holder.tv_firmware_version.setText(pojoCard.getFirmware_version().toString());holder.tv_remarks1.setText(pojoCard.getRemarks1().toString());holder.tv_remarks2.setText(pojoCard.getRemarks2().toString());holder.tv_remarks3.setText(pojoCard.getRemarks3().toString());holder.tv_remarks4.setText(pojoCard.getRemarks4().toString());holder.tv_remarks5.setText(pojoCard.getRemarks5().toString());holder.tv_equimentName.setText(pojoCard.getEquiment_name().toString());holder.tv_assetNo.setText(pojoCard.getAsset_no().toString());holder.tv_categoryNo.setText(pojoCard.getCategory_no().toString());holder.tv_categoryName.setText(pojoCard.getCategory_name().toString());holder.tv_warehouseNo.setText(pojoCard.getWarehouse_no().toString());holder.tv_warehouseName.setText(pojoCard.getWarehouse_name().toString());holder.tv_locationNo.setText(pojoCard.getLocation_no().toString());holder.tv_locationName.setText(pojoCard.getLocation_name().toString());holder.tvState.setText(pojoCard.getState().toString());holder.tv_assetId.setText(pojoCard.getId()+"");holder.checkBox.setChecked(pojoCard.isCheckBox());//        holder.add=(TextView) view.findViewById(R.id.btnPlus);
//        holder.reduce=(TextView) view.findViewById(R.id.btnMinus);// 添加 TextWatcher（需处理复用问题）//   setupTextWatcher(holder.num, pojoCard, position);// 绑定“+”号点击事件holder.add.setOnClickListener(v -> {int currentPosition = holder.getAdapterPosition(); // 获取当前项位置if (currentPosition != RecyclerView.NO_POSITION) {PojoCard currentItem = cartItems.get(currentPosition);currentItem.setIn_number(currentItem.getIn_number() + 1); // 仅修改当前项notifyItemChanged(currentPosition); // 刷新当前项// 可选：通过回调通知外部更新总价等if (listener != null) {listener.onQuantityChanged(currentItem);}}});// 类似处理“-”号按钮holder.reduce.setOnClickListener(v -> {int currentPosition = holder.getAdapterPosition();if (currentPosition != RecyclerView.NO_POSITION) {PojoCard currentItem = cartItems.get(currentPosition);if (currentItem.getIn_number() > 1) {currentItem.setIn_number(currentItem.getIn_number() - 1);notifyItemChanged(currentPosition);if (listener != null) {listener.onQuantityChanged(currentItem);}}}});// 创建并添加新监听器TextWatcher watcher = new TextWatcher() {@Overridepublic void beforeTextChanged(CharSequence s, int start, int count, int after) {}@Overridepublic void onTextChanged(CharSequence s, int start, int before, int count) {}@Overridepublic void afterTextChanged(Editable s) {cartItems.get(holder.getAdapterPosition()).setContent(s.toString());}};holder.num.addTextChangedListener(watcher);watcherMap.put(pojoCard.getId()+"", watcher);// holder.bindData(pojoCard);}private void setupTextWatcher(EditText editText, final PojoCard item, final int position) {// 清除旧监听器，避免重复触发if (editText.getTag(R.id.EditText_In_number) != null) {editText.removeTextChangedListener((TextWatcher) editText.getTag(R.id.EditText_In_number));}TextWatcher watcher = new TextWatcher() {@Overridepublic void beforeTextChanged(CharSequence s, int start, int count, int after) {}@Overridepublic void onTextChanged(CharSequence s, int start, int before, int count) {}@Overridepublic void afterTextChanged(Editable s) {try {int quantity = Integer.parseInt(s.toString());item.setOut_number(quantity); // 更新对应数据// 可选：刷新单个 item 或通知数据变化// notifyDataSetChanged();} catch (NumberFormatException e) {e.printStackTrace();}}};editText.addTextChangedListener(watcher);editText.setTag(R.id.EditText_In_number, watcher); // 标记监听器以便后续移除}@Overridepublic int getItemCount() {return cartItems.size();}// 定义回调接口（可选）public interface OnQuantityChangeListener {void onQuantityChanged(PojoCard item);}
}

CategoryInventoryActivity代码：

 private RecyclerView recyclerView;private ShoppingInCartAdapter shoppinginCartAdapter;private List<PojoCard> mArrCard;@Overrideprotected void onCreate(Bundle savedInstanceState) {// 绑定 RecyclerViewrecyclerView = findViewById(R.id.RecyclerView);recyclerView.setLayoutManager(new LinearLayoutManager(this)); // 必须设置布局管理器shoppinginCartAdapter = new ShoppingInCartAdapter(mArrCard, this);recyclerView.setAdapter(shoppinginCartAdapter);}