android中ListView结合EditText复杂操作

1、实现功能描述：

要实现一个新建订单的功能，新建订单界面有一个ListView可以动态添加订单行(动态添加Item)，并且可以修改订单行中的数据(可以编辑EditText并且获取EditText进行计算显示)

2、实现思路：

在订单界面定义一个添加按钮，点击添加按钮跳转到物品列表选择物品，通过Intent传递到订单界面，加入到ListView中。

3、具体实现：

注意：需要一个文件保存已经添加到列表的数据，每次为订单的ListView添加数据时，先从文件中读取数据，再将新加入的数据加入，再加载到ListView上。

主要有三个点：

1、自定义myTextWatcher，为了获取ViewHolder，以获取当前点击的item

2、自定义myOnFocusChangeListener，为了获取ViewHolder，以获取当前点击的item

3、在布局中定义一个textview用于记录当前Item在stockBeenList中的位置，为了保存和获取对应stockBeenList中的数据

适配器代码：

package com.wxcoming.wxcomingerp.sale.neworder.adapter;import android.app.DatePickerDialog;import android.content.Context;import android.text.Editable;import android.text.TextUtils;import android.text.TextWatcher;import android.text.method.PasswordTransformationMethod;import android.util.Log;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.DatePicker;import android.widget.EditText;import android.widget.LinearLayout;import android.widget.TextView;import com.wxcoming.wxcomingerp.R;import com.wxcoming.wxcomingerp.bean.SaleFindOrderLine;import com.wxcoming.wxcomingerp.bean.Ware;import java.util.Calendar;import java.util.List;/** * * Created by adolph_jun on 2017/10/10. */public class SaleNewOrderAdapter extends BaseAdapter {    private List<SaleFindOrderLine> stockBeenList;    private Context context;    private int mSt_Year, mSt_Month, mSt_Day;    private int mEnd_Year, mEnd_Month, mEnd_Day;    private int mNow_Year, mNow_Month, mNow_Day;    public SaleNewOrderAdapter(List<SaleFindOrderLine> stockBeenList, Context context){        this.stockBeenList = stockBeenList;        this.context = context;        Calendar now = Calendar.getInstance();        mEnd_Year = mSt_Year = mNow_Year = now.get(Calendar.YEAR);        mEnd_Month = mSt_Month = mNow_Month = now.get(Calendar.MONTH)+1;        mEnd_Day = mSt_Day = mNow_Day = now.get(Calendar.DAY_OF_MONTH);    }    @Override    public int getCount() {        return stockBeenList.size();    }    @Override    public Object getItem(int position) {        return null;    }    @Override    public long getItemId(int position) {        return position;    }    ViewHolder holder = null;    @Override    public View getView(final int position, View convertView, ViewGroup parent) {        if (convertView == null){            convertView = LayoutInflater.from(context).inflate(R.layout.item_sale_neworder_list,null,false);            holder = new ViewHolder();            holder.Tv_Code = (TextView) convertView.findViewById(R.id.SaleNewOrder_item_wareCode);            holder.Tv_Name = (TextView) convertView.findViewById(R.id.SaleNewOrder_item_wareName);            holder.Et_price = (EditText) convertView.findViewById(R.id.SaleNewOrder_item_price);            holder.Et_quantity = (EditText) convertView.findViewById(R.id.SaleNewOrder_item_qu);            holder.Tv_money = (TextView) convertView.findViewById(R.id.SaleNewOrder_item_money);            holder.Tv_model = (TextView) convertView.findViewById(R.id.SaleNewOrder_item_model);            holder.Tv_size = (TextView) convertView.findViewById(R.id.SaleNewOrder_item_size);            holder.Tv_unit = (TextView) convertView.findViewById(R.id.SaleNewOrder_item_unit);            holder.Tv_delivery = (TextView) convertView.findViewById(R.id.SaleNewOrder_item_deliveryDate);            holder.Tv_send = (TextView) convertView.findViewById(R.id.SaleNewOrder_item_sendDate);            holder.Tv_pis = (TextView) convertView.findViewById(R.id.SaleNewOrder_item_pis);            convertView.setTag(holder);        }else{            holder = (ViewHolder) convertView.getTag();        }        holder.Tv_Code.setText("物料编码："+stockBeenList.get(position).getWareCode());        holder.Tv_Name.setText("物料名称："+stockBeenList.get(position).getWareName());        holder.Tv_model.setText("规格："+stockBeenList.get(position).getWareModel());        holder.Tv_size.setText("尺寸："+stockBeenList.get(position).getWareSize()+position);        holder.Tv_pis.setText(position+"");        holder.Tv_unit.setText("单位："+stockBeenList.get(position).getUnitName());        holder.Tv_delivery.setText(stockBeenList.get(position).getDeliveryDate());        holder.Tv_send.setText(stockBeenList.get(position).getSend_date());        //价格Edittext的点击事件        if(holder.Et_price.getTag() instanceof TextWatcher){            holder.Et_price.removeTextChangedListener((TextWatcher) holder.Et_price.getTag());        }        holder.Et_price.setText(stockBeenList.get(position).getPrice()+"");        final myTextWatcher watcher = new myTextWatcher(holder) {            @Override            public void beforeTextChanged(CharSequence s, int start, int count, int after) {}            @Override            public void onTextChanged(CharSequence s, int start, int before, int count) {}            @Override            public void afterTextChanged(Editable s) {                int pis = Integer.parseInt(v.Tv_pis.getText().toString());                if(TextUtils.isEmpty(s)){                    stockBeenList.get(pis).setPrice(0);                }else{                    float p = Float.parseFloat(s.toString());                    stockBeenList.get(pis).setPrice(p);                    stockBeenList.get(pis).setMoney(p* stockBeenList.get(pis).getOrder_quantity());                    v.Tv_money.setText("金额："+stockBeenList.get(pis).getMoney()+"");                }            }        };        holder.Et_price.setOnFocusChangeListener(new myOnFocusChangeListener(holder) {            @Override            public void onFocusChange(View v, boolean hasFocus) {                v1.Et_price.addTextChangedListener(watcher);                v1.Et_price.setTag(watcher);            }        });        //数量Edittext的点击事件        if(holder.Et_quantity.getTag() instanceof TextWatcher){            holder.Et_quantity.removeTextChangedListener((TextWatcher) holder.Et_quantity.getTag());        }        holder.Et_quantity.setText(stockBeenList.get(position).getOrder_quantity()+"");        final myTextWatcher watcher1 = new myTextWatcher(holder) {            @Override            public void beforeTextChanged(CharSequence s, int start, int count, int after) {}            @Override            public void onTextChanged(CharSequence s, int start, int before, int count) {}            @Override            public void afterTextChanged(Editable s) {                int pis = Integer.parseInt(v.Tv_pis.getText().toString());                if(TextUtils.isEmpty(s)){                    stockBeenList.get(pis).setOrder_quantity(0);                }else{                    float p = Float.parseFloat(s.toString());                    stockBeenList.get(pis).setOrder_quantity(p);                    stockBeenList.get(pis).setMoney(p* stockBeenList.get(pis).getPrice());                    v.Tv_money.setText("金额："+stockBeenList.get(pis).getMoney()+"");                }            }        };        holder.Et_quantity.setOnFocusChangeListener(new myOnFocusChangeListener(holder) {            @Override            public void onFocusChange(View v, boolean hasFocus) {                v1.Et_quantity.addTextChangedListener(watcher1);                v1.Et_quantity.setTag(watcher1);            }        });        holder.Tv_money.setText(stockBeenList.get(position).getMoney()+"");        DateListener(holder);        return convertView;    }    //日期选择监听事件    private void DateListener(final ViewHolder holder) {        holder.Tv_delivery.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                new DatePickerDialog(context, new DatePickerDialog.OnDateSetListener() {                    @Override                    public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {                        int pis = Integer.parseInt(holder.Tv_pis.getText().toString());                        mSt_Year = year;                        mSt_Month = monthOfYear;                        mSt_Day = dayOfMonth;                        holder.Tv_delivery.setText(mSt_Year+"-"+mSt_Month+"-"+mSt_Day);                        stockBeenList.get(pis).setDeliveryDate(mSt_Year+"-"+mSt_Month+"-"+mSt_Day);                    }                }, mNow_Year, mNow_Month, mNow_Day).show();            }        });        holder.Tv_send.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                new DatePickerDialog(context, new DatePickerDialog.OnDateSetListener() {                    @Override                    public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {                        int pis = Integer.parseInt(holder.Tv_pis.getText().toString());                        mEnd_Year = year;                        mEnd_Month = monthOfYear;                        mEnd_Day = dayOfMonth;                        holder.Tv_send.setText(mEnd_Year+"-"+mEnd_Month+"-"+mEnd_Day);                        stockBeenList.get(pis).setSend_date(mEnd_Year+"-"+mEnd_Month+"-"+mEnd_Day);                    }                }, mNow_Year, mNow_Month, mNow_Day).show();            }        });    }    static class ViewHolder{        private TextView Tv_Code;        private TextView Tv_Name;        private EditText Et_price;        private EditText Et_quantity;        private TextView Tv_money;        private TextView Tv_model;        private TextView Tv_size;        private TextView Tv_unit;        private TextView Tv_delivery;        private TextView Tv_send;        private TextView Tv_pis;//记录当前Item在stockBeenList中的位置，为了保存和获取对应stockBeenList中的数据    }}/** * 自定义myTextWatcher，为了获取ViewHolder，以获取当前点击的item */class myTextWatcher implements  TextWatcher{    SaleNewOrderAdapter.ViewHolder v;    public myTextWatcher(SaleNewOrderAdapter.ViewHolder v){        this.v = v;    }    @Override    public void beforeTextChanged(CharSequence s, int start, int count, int after) {    }    @Override    public void onTextChanged(CharSequence s, int start, int before, int count) {    }    @Override    public void afterTextChanged(Editable s) {    }}/** * myOnFocusChangeListener，为了获取ViewHolder，以获取当前点击的item */class myOnFocusChangeListener implements View.OnFocusChangeListener{    SaleNewOrderAdapter.ViewHolder v1;    public myOnFocusChangeListener(SaleNewOrderAdapter.ViewHolder v ){        this.v1 = v;    }    @Override    public void onFocusChange(View v, boolean hasFocus) {    }}