如何跨UI实现功能

package com.qf.anong.fragment;

import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

import com.google.gson.reflect.TypeToken;
import com.qf.anong.adapter.DownLoadInfoAdapter;
import com.qf.anong.anongproject.MainActivity;
import com.qf.anong.anongproject.R;
import com.qf.anong.bean.DownLoadInfo;
import com.qf.anong.inter.AllNet;
import com.qf.anong.inter.CallbackCheckedInfo;
import com.qf.anong.inter.OnSelectedItemChanged;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.xutils.common.Callback;
import org.xutils.http.RequestParams;
import org.xutils.x;

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

/**
* Created by wang on 2016/5/20.
*/
public class ShowFragment extends Fragment implements View.OnClickListener {
List<DownLoadInfo> list;
private ListView down_load_list;
String url = AllNet.url;
ImageView back_last_act;
TextView editId, add_money, close_account;
CheckBox choose_allId;
private DownLoadInfoAdapter adapter;
private OnSelectedItemChanged onSelectItemChanged;

private TypeToken<List<DownLoadInfo>> tabContentTypeToken;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle
savedInstanceState) {
View v = inflater.inflate(R.layout.shopping_box, null);
back_last_act = (ImageView) v.findViewById(R.id.back_last_act);
down_load_list = (ListView) v.findViewById(R.id.down_load_list);
editId = (TextView) v.findViewById(R.id.editId);

choose_allId = (CheckBox) v.findViewById(R.id.choose_allId);//全选
add_money = (TextView) v.findViewById(R.id.add_money);//合计总钱数
close_account = (TextView) v.findViewById(R.id.close_account);

setListener();
return v;

}

private void setListener() {
back_last_act.setOnClickListener(this);
}

@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);

getAllInfo();

RequestParams params = new RequestParams(url);
x.http().get(params, new Callback.CommonCallback<String>() {
@Override
public void onSuccess(String result) {

try {
JSONArray arry = new JSONObject(result).optJSONArray("products");
if (arry == null) return;

for (int i = 0; i < arry.length(); i++) {
JSONObject ob = arry.optJSONObject(i);
String title = ob.optString("title");
String price = ob.optString("price");
String picture = ob.optString("picture");
DownLoadInfo info = new DownLoadInfo(title, price, picture);
list.add(info);
}
} catch (JSONException e) {
e.printStackTrace();
}
adapter.notifyDataSetChanged();
}

@Override
public void onError(Throwable ex, boolean isOnCallback) {

}

@Override
public void onCancelled(CancelledException cex) {
// Log.d("test",cex.toString());
}

@Override
public void onFinished() {

}
});
}

private void getAllInfo() {
list = new ArrayList<>();
adapter = new DownLoadInfoAdapter(list, getActivity(), onSelectItemChanged);
down_load_list.setAdapter(adapter);
adapter.setCallback(new CallbackCheckedInfo() {
@Override
public void checkedInfo(boolean isCheckedAll, float price) {
choose_allId.setChecked(isCheckedAll);
add_money.setText(price + "");

}
});
}

@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.back_last_act:
Intent intent = new Intent(getActivity(), MainActivity.class);
startActivity(intent);
break;
//            case R.id.choose_allId://全选
//                choose_allId.setChecked(true);
//                adapter.selectAll();
//                choose_allId.setChecked(false);
//                adapter.disSelectAll();
//                break;

}
}

//    // 反选
//    public void switchSelect(View v) {
//        adapter.switchSelect();
//    }

}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:id="@+id/ll"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="130dp"
android:orientation="vertical">

<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="horizontal">

<CheckBox
android:id="@+id/home_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="  **的农家院"
android:textSize="20sp"
/>

<TextView
android:id="@+id/compile_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:paddingLeft="50dp"
android:text="编辑"
android:textSize="20sp"/>

</LinearLayout>

<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="3"
android:orientation="horizontal">

<CheckBox
android:id="@+id/singleId"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="false"/>

<ImageView
android:id="@+id/produce_img"
android:layout_width="40dp"
android:layout_height="40dp"
android:background="@mipmap/ic_launcher"/>

<LinearLayout
android:id="@+id/detail_info_ll"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">

<TextView
android:id="@+id/produce_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="name"
android:textSize="15sp"
/>

<TextView
android:id="@+id/produce_type"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="类型"
android:textSize="25sp"
/>

<LinearLayout
android:layout_width="100dp"
android:layout_height="match_parent"
android:orientation="horizontal">

<TextView
android:id="@+id/price_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="price"
android:textSize="20sp"
/>

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="x"
android:textSize="20sp"/>

<TextView
android:id="@+id/num_add"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="5dp"
android:text="1"
android:textColor="#00f"
android:textSize="20sp"/>

</LinearLayout>

<TextView
android:id="@+id/display_price"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="48.00"
android:textColor="#eeff00"
android:textSize="20sp"/>

</LinearLayout>

</LinearLayout>

</LinearLayout>

package com.qf.anong.inter;

/**
* Created by Claudia on 2016/5/23 0023.
*/
public interface CallbackCheckedInfo {

void checkedInfo( boolean isCheckedAll, float price);
}
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package com.qf.anong.adapter;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.ImageView;
import android.widget.TextView;

import com.qf.anong.anongproject.R;
import com.qf.anong.bean.DownLoadInfo;
import com.qf.anong.inter.CallbackCheckedInfo;
import com.qf.anong.inter.OnSelectedItemChanged;

import org.xutils.x;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
* Created by Administrator on 2016/5/21 0021.
*/
public class DownLoadInfoAdapter extends BaseAdapter {
List<DownLoadInfo> list;
Context context;
private OnSelectedItemChanged onSelectedItemChanged;
private LayoutInflater ll_detail;
Map<Integer, Boolean> map;
private CallbackCheckedInfo callback;

public void setCallback(CallbackCheckedInfo callback) {
this.callback = callback;

}

public DownLoadInfoAdapter(List<DownLoadInfo> list, Context context, OnSelectedItemChanged onSelectedItemChanged) {
this.onSelectedItemChanged = onSelectedItemChanged;
this.list = list;
this.context = context;
ll_detail = LayoutInflater.from(context);
map = new HashMap<Integer, Boolean>();
for (int i = 0; i < list.size(); i++) {
map.put(i, true);//默认都没有被选中
}

}

@Override
public int getCount() {
return list.size();
}

@Override
public Object getItem(int position) {
return list.get(position);
}

@Override
public long getItemId(int position) {
return position;
}

@Override
public View getView(final int position, View convertView, ViewGroup parent) {
View v;
final viewHolder holder;
if (convertView == null) {
v = LayoutInflater.from(context).inflate(R.layout.download_detail, null);
holder = new viewHolder();
//            holder.home_name = (TextView) v.findViewById(R.id.home_name);
//            holder.compile_id = (TextView) v.findViewById(R.id.compile_id);//编辑
holder.singleId = (CheckBox) v.findViewById(R.id.singleId);
holder.produce_name = (TextView) v.findViewById(R.id.produce_name);
holder.price_id = (TextView) v.findViewById(R.id.price_id);
holder.display_price = (TextView) v.findViewById(R.id.display_price);
//            holder.num_add = (TextView) v.findViewById(R.id.num_add);
holder.produce_img = (ImageView) v.findViewById(R.id.produce_img);
v.setTag(holder);
} else {
v = convertView;
holder = (viewHolder) v.getTag();

}
DownLoadInfo info = list.get(position);
holder.produce_name.setText(info.getTitile());
holder.price_id.setText(info.getPrice());
holder.display_price.setText(info.getPrice());
//        holder.radId.setChecked(map.get(position));
holder.singleId.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

map.put(position, isChecked);
//此时全选为false
callBackInfo();

}
});

x.image().bind(holder.produce_img, info.getPicture());
return v;
}

//    public int getSelectedCount(Map<Integer, Boolean> map) {
//        int i = 0;
//        for (Map.Entry<Integer, Boolean> entry : map.entrySet()) {
//            if (entry.getValue()) {
//                i++;
//            }
//        }
//
//        return i;
//    }

class viewHolder {
TextView home_name, compile_id, produce_name, produce_type, price_id, num_add, display_price;
ImageView produce_img;
CheckBox singleId;
}

private void callBackInfo() {
float sumPrice = 0;
boolean isAllChecked = true;

for (Map.Entry<Integer, Boolean> entry : map.entrySet()) {
if (!entry.getValue()) {
isAllChecked = false;

} else {
String pr = list.get(entry.getKey()).getPrice();
sumPrice += Float.parseFloat(pr);
//                String price = String.format("%.2f",sumPrice);
}
}

if (callback != null) {
callback.checkedInfo(isAllChecked, sumPrice);
//            String price = String.format("%.2f",sumPrice);
}
}
//
//    public void selectAll() { // 全选
//        for (int i = 0; i < list.size(); i++) {
//            map.put(i, true);
//        }
//        notifyDataSetChanged();
//    }
//
//    public void disSelectAll() { // 全不选
//        for (int i = 0; i < list.size(); i++) {
//            map.put(i, false);
//        }
//        notifyDataSetChanged();
//    }
//
//    public void switchSelect() { // 反选
//        for (int i = 0; i < list.size(); i++) {
//            boolean select = map.get(i);
//            map.put(i, !select);
//        }
//        notifyDataSetChanged();
//    }

}