Android动态添加删除recycleview并动态保存recycleview中的的数据

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <include
        android:id="@+id/ll_title"
        layout="@layout/title" />

    <android.support.v4.widget.NestedScrollView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/ll_title"
        android:background="#fff"
        android:orientation="vertical"
        android:overScrollMode="never"
        android:padding="@dimen/px10">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">

            <android.support.v7.widget.RecyclerView
                android:id="@+id/rv_etid_reimburse_detail"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" />




            <Button
                android:id="@+id/btn_save"
                android:layout_width="fill_parent"
                android:layout_height="40dp"
                android:layout_marginLeft="5dp"
                android:layout_marginTop="50dp"
                android:layout_marginRight="5dp"
                android:background="#ff336699"
                android:gravity="center"
                android:text="保    存"
                android:textColor="@android:color/white" />
        LinearLayout>

    android.support.v4.widget.NestedScrollView>

RelativeLayout>

package com.example.zxingdemo1.ui.reimbursement.activity;

import android.app.Activity;
import android.content.Intent;
import android.graphics.Color;
import android.support.v7.widget.DividerItemDecoration;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;

import com.chad.library.adapter.base.BaseQuickAdapter;
import com.example.zxingdemo1.R;
import com.example.zxingdemo1.base.BaseActivity;
import com.example.zxingdemo1.ui.bean.production.OtherWorkOrderEntity;
import com.example.zxingdemo1.ui.production.adapter.OtherWorkOrderListAdapter;
import com.example.zxingdemo1.ui.reimbursement.adapter.ReimburseEditDetailAdapter;
import com.example.zxingdemo1.ui.reimbursement.entity.DbBaoxiaoDetail;
import com.example.zxingdemo1.util.SpacesItemDecoration;
import com.example.zxingdemo1.util.ToastUitl;

import java.io.Serializable;
import java.math.BigDecimal;
import java.security.spec.ECField;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import cn.addapp.pickers.common.LineConfig;
import cn.addapp.pickers.listeners.OnItemPickListener;
import cn.addapp.pickers.picker.DateTimePicker;
import cn.addapp.pickers.picker.SinglePicker;

/**
 * 新建-费用报销明细
 * founder:ywz
 * date:2020-07-21
 */
public class AddReimbursementDetailActivity extends BaseActivity implements View.OnClickListener {
    private RecyclerView rv;
    private Button btn_save;
    private String[] reimburseType = {"客户招待费（在联系任务/跟进、客户来访跟进、产生销售机会、签订合同订单）的情况下产生的客户招待费",
            "销售代表交通费（必须有出差客户住址的跟进活动的交通费用）", "销售代表误餐费", "销售代表车辆补助费", "销售代表住宿费",
            "分公司房租水电费", "展位费、电气租赁、搭建费、运输费、试机材料费、", "展会人员交通、住宿、伙食费",
            "展会客户招待费（包含住宿，吃饭，交通）", "广告费（包含网络推广，网站建设，维护，所有形式的广告）",
            "广告礼品费（包括节日礼品，展会礼品，平时交际礼品，推广礼品）", "宣传品费（包含画册，U盘，宣传喷绘等）", "交货叉（吊）车费"};
    private ReimburseEditDetailAdapter adapter;
    private List<DbBaoxiaoDetail> mList = new ArrayList<>();
    private List<DbBaoxiaoDetail> saveDetail = new ArrayList<>();

    @Override
    protected int setLayoutResId() {
        return R.layout.activity_add_reimbursement_detail;
    }


    @Override
    public void initView() {
        setTitle("新建-费用报销明细");
        setTitleLeftImg(R.mipmap.back_white);

        rv = findViewById(R.id.rv_etid_reimburse_detail);
        btn_save = findViewById(R.id.btn_save);
        btn_save.setOnClickListener(this);

        //默认添加一个Item
        DbBaoxiaoDetail detail = new DbBaoxiaoDetail();
        mList.add(detail);//空数据添加首项

        LinearLayoutManager mLinearLayoutManager = new LinearLayoutManager(this);
        rv.setItemViewCacheSize(500);//解决recyclerView每间隔10个item就会重复显示状态的问题，凡是有recyclerView都要加上这个~
        rv.setLayoutManager(mLinearLayoutManager);
        rv.addItemDecoration(new DividerItemDecoration(this, DividerItemDecoration.VERTICAL));
        adapter = new ReimburseEditDetailAdapter(mList);
        rv.setAdapter(adapter);
        adapter.replaceData(mList);

        adapter.setOnItemChildClickListener(new BaseQuickAdapter.OnItemChildClickListener() {
            @Override
            public void onItemChildClick(BaseQuickAdapter adapter, View view, int position) {
                if (view.getId() == R.id.img_add) {
                    mList.add(detail);//空数据添加项
                    adapter.setNewData(mList);

                } else if (view.getId() == R.id.img_delete) {
                    mList.remove(position);
                    adapter.setNewData(mList);
                } else if (view.getId() == R.id.iv_shenqingriqi||view.getId() == R.id.tv_fashengriqi) {
                    onYearMonthDayTimePicker(position);
                } else if (view.getId() == R.id.ll_zhuti) {
                    onRoadPicker(reimburseType, 1, position);
                }

            }
        });
    }


    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.btn_save:
                for (int i = 0; i < mList.size(); i++) {
                    View itemView = rv.getLayoutManager().findViewByPosition(i);
                    String tv_zhuti = ((TextView) itemView.findViewById(R.id.tv_zhuti)).getText().toString();
                    String tv_fashengriqi = ((TextView) itemView.findViewById(R.id.tv_fashengriqi)).getText().toString();

                    String et_jine = ((TextView) itemView.findViewById(R.id.et_jine)).getText().toString().trim();
                    BigDecimal jine=new BigDecimal("0");
                    try {
                        jine = new BigDecimal(et_jine);
                    } catch (Exception e) {
                        e.printStackTrace();
                       // jine = new BigDecimal("0").setScale(2);
                    }
                    String et_piaojuzhangshu = ((EditText) itemView.findViewById(R.id.et_piaojuzhangshu)).getText().toString().trim();
                    String et_yongtu = ((EditText) itemView.findViewById(R.id.et_yongtu)).getText().toString().trim();
                    if (!TextUtils.isEmpty(tv_zhuti) &&
                            !TextUtils.isEmpty(tv_fashengriqi) &&
                            !TextUtils.isEmpty(et_jine)&&
                            !TextUtils.isEmpty(et_piaojuzhangshu)
                            ) {
                        DbBaoxiaoDetail detail = new DbBaoxiaoDetail(tv_zhuti, tv_fashengriqi, jine, Integer.valueOf(et_piaojuzhangshu), et_yongtu);
                        saveDetail.add(detail);
                    } else {
                        ToastUitl.showShort(getString(R.string.string_wtite_all));
                        return;
                    }
                }

                BigDecimal allJinE = new BigDecimal("0");
                int piaoJuZhangshu = 0;
                for (int i = 0; i < saveDetail.size(); i++) {
                    allJinE = allJinE.add(saveDetail.get(i).getJine());
                    piaoJuZhangshu += saveDetail.get(i).getPiaojuzhangshu();
                }

                Intent intent = new Intent();
                intent.putExtra("details", (Serializable) saveDetail);
                intent.putExtra("allJinE", allJinE.toPlainString());
                intent.putExtra("piaoJuZhangshu", piaoJuZhangshu);
                setResult(Activity.RESULT_OK, intent);
                finish();
                break;
        }

    }

    /**
     * 选择器
     *
     * @param list 选择的list
     * @param type 对应的类别
     */
    public void onRoadPicker(String[] list, int type, int position) {
        SinglePicker<String> picker = new SinglePicker<>(this, list);
        picker.setCanLoop(false);//不禁用循环
        picker.setTopBackgroundColor(Color.WHITE);
        picker.setTopHeight(50);
        picker.setTitleText("请选择");
        picker.setSelectedTextColor(getResources().getColor(R.color.base_color));
        picker.setWheelModeEnable(false);
        LineConfig config = new LineConfig();
        config.setColor(getResources().getColor(R.color.base_color));//线颜色
        config.setAlpha(120);//线透明度
        picker.setLineConfig(config);
        picker.setItemWidth(200);

        picker.setOnItemPickListener(new OnItemPickListener<String>() {
            @Override
            public void onItemPicked(int index, String item) {
                if (type == 1) {
                    View itemView = rv.getLayoutManager().findViewByPosition(position);
                    TextView tv_zhuti = itemView.findViewById(R.id.tv_zhuti);
                    tv_zhuti.setText(item);
                } else if (type == 2) {
                    //  tv_feiyongjiazhi.setText(item);
                }
            }
        });
        picker.show();
    }

    /**
     * 时间选择器
     */
    public void onYearMonthDayTimePicker(int position) {

        DateTimePicker picker = new DateTimePicker(this, DateTimePicker.HOUR_24);
        picker.setCanLoop(false);
        picker.setTopBackgroundColor(Color.WHITE);
        picker.setTopHeight(50);
        picker.setTitleText("请选择");
        LineConfig config = new LineConfig();
        config.setColor(getResources().getColor(R.color.base_color));//线颜色
        config.setAlpha(120);//线透明度
        picker.setLineConfig(config);
        picker.setSelectedTextColor(getResources().getColor(R.color.base_color));
        picker.setTopPadding(15);
        picker.setCanLinkage(true);
        picker.setDateRangeStart(2017, 1, 1);
        picker.setDateRangeEnd(2050, 12, 31);
        Calendar cal = Calendar.getInstance();
        picker.setSelectedItem(cal.get(Calendar.YEAR), (cal.get(Calendar.MONTH) + 1), cal.get(Calendar.DAY_OF_MONTH), cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE));
        picker.setTimeRangeStart(9, 0);
        picker.setTimeRangeEnd(20, 30);
        picker.setWeightEnable(true);
        picker.setWheelModeEnable(true);
        picker.setOnDateTimePickListener(new DateTimePicker.OnYearMonthDayTimePickListener() {
            @Override
            public void onDateTimePicked(String year, String month, String day, String hour, String minute) {
                View itemView = rv.getLayoutManager().findViewByPosition(position);
                TextView tv_fashengriqi = itemView.findViewById(R.id.tv_fashengriqi);
                tv_fashengriqi.setText(year + "-" + month + "-" + day);
            }
        });
        picker.show();
    }


}

package com.example.zxingdemo1.ui.reimbursement.adapter;

import android.view.View;

import com.chad.library.adapter.base.BaseQuickAdapter;
import com.chad.library.adapter.base.BaseViewHolder;
import com.example.zxingdemo1.R;
import com.example.zxingdemo1.ui.bean.DbCustomXiaoshoujihui;
import com.example.zxingdemo1.ui.reimbursement.entity.DbBaoxiaoDetail;

import java.util.ArrayList;
import java.util.List;

public class ReimburseEditDetailAdapter extends BaseQuickAdapter<DbBaoxiaoDetail, BaseViewHolder> {
    private List<DbBaoxiaoDetail> mList;

    public ReimburseEditDetailAdapter(List<DbBaoxiaoDetail> list) {
        super(R.layout.item_edit_reimburse_detail);
        this.mList = list;
    }

    @Override
    protected void convert(BaseViewHolder helper, DbBaoxiaoDetail item) {

        if ((mList.size() - 1) == helper.getPosition()) {//最后一项，显示+
            helper.getView(R.id.img_add).setVisibility(View.VISIBLE);
            helper.getView(R.id.img_delete).setVisibility(View.GONE);
        }else{//不是最后一项，显示-
            helper.getView(R.id.img_add).setVisibility(View.GONE);
            helper.getView(R.id.img_delete).setVisibility(View.VISIBLE);
        }
        helper.addOnClickListener(R.id.img_add);
        helper.addOnClickListener(R.id.img_delete);
        helper.addOnClickListener(R.id.iv_shenqingriqi);
        helper.addOnClickListener(R.id.tv_fashengriqi);
        helper.addOnClickListener(R.id.ll_zhuti);
    }
}