Php ANDROID：从LazyList列表视图（thest1/LazyList）获取列的总和

我目前正在为我们的项目开发一个订购应用程序，我正在使用来自的LazylistListView

在我的listview中，我有一个textView价格，我想要的是将我的listview中的所有textView价格相加，并将其放入textView TotalSum

这是密码

public class OrderSum extends Activity{

ListView list;
TextView id;  //// ver - id
TextView name; //// name - name
TextView quan; ////  api - desc
TextView price; ////  price
TextView order_num; ////  price
TextView cust_num; ////  price
ImageView image;

TextView items;
TextView empty;
TextView home_ornum;
TextView cust_name;

ImageButton addOrder;
ImageButton proceed;

DigitalClock time;
TextView os;

TextView o_total;


// Declare Variables
    JSONObject jsonobject;
    JSONArray jsonarray;
    ListView listview;
    LvOrderSumAdapter adapter;
    ProgressDialog mProgressDialog;
    ArrayList<HashMap<String, String>> arraylist;
    static String ID = "id";
    static String NAME = "ord_name";
    static String PRICE = "ord_price";
    static String QTY = "ord_qty";
    static String CUSTID = "customer_id";
    static String ORDER = "ord_num";
    static String PXQ = "price_x_quan";
    static String IMAGE = "image";
    static String OR = "text_ordernumber";
    static String ON = "text_name";
    static String TP = "t_price";

    private static String ordershow = "http://192.168.43.52/MMOS/api/ordershow.php";
///////////////////////

@SuppressLint({ "SimpleDateFormat", "NewApi" })
@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.order_summary);

    // Execute DownloadJSON AsyncTask
            new DownloadJSON().execute();

                     /**Unique ID / Customer Id***/
                     DatabaseHandler db = new DatabaseHandler(getApplicationContext());
                     /**
                     * Hashmap to load data from the Sqlite database
                     **/
                     HashMap user = new HashMap();
                     user = db.getUserDetails();


                     final TextView unique_id = (TextView) findViewById(R.id.o_custnum);
                     unique_id.setText((CharSequence) user.get("uid"));

                     /**END**/

                     /** DATE VIEW***/
                     TextView h_date = (TextView) findViewById(R.id.o_date);
                     Calendar c = Calendar.getInstance();
                      SimpleDateFormat format1;

                      format1 = new SimpleDateFormat("MMMM dd,yyyy");
                     // format2 = new SimpleDateFormat("dd-MM-yyyy-HH-mm-ss");

                      h_date.setText(format1.format(c.getTime()) );
                      /** END DATE VIEW***/




     cust_name = (TextView) findViewById(R.id.DisplaycustName);
     home_ornum = (TextView) findViewById(R.id.Displayordernum);
     time = (DigitalClock) findViewById(R.id.o_time);


     Intent myIntent = getIntent();
     home_ornum.setText(myIntent.getStringExtra("text_ordernumber")); //order number is the TextView
     cust_name.setText(myIntent.getStringExtra("text_name")); //tv is the TextView   


     items= (TextView) findViewById(R.id.DisplayTotalItems);

     /***************Custom Font***/
     Typeface myCustomFont = Typeface.createFromAsset(getAssets(), "fonts/MavenPro.otf");
       cust_name.setTypeface(myCustomFont);
       home_ornum.setTypeface(myCustomFont);
       time.setTypeface(myCustomFont); 
       h_date.setTypeface(myCustomFont); 
     /***************Custom Font**************/  




         addOrder = (ImageButton) findViewById(R.id.btn_add);
         addOrder.setOnClickListener(new View.OnClickListener() {


                @Override
                public void onClick(View v) {
                    // TODO Auto-generated method stub
                    Intent myIntent = new Intent(OrderSum.this,
                            Categories.class);
                    startActivity(myIntent);
                    overridePendingTransition(R.anim.slide_in_left, R.anim.slide_out_left);

                }
          });


          /***************************PROCEED BUTTON***************************/
          proceed = (ImageButton) findViewById(R.id.btn_proceed);
          proceed.setOnClickListener(new View.OnClickListener() {


                @Override
                public void onClick(View v) {
                    // TODO Auto-generated method stub
                    Intent myIntent = new Intent(OrderSum.this,
                            OrderInformation.class);
                    startActivity(myIntent);
                    // uniq id , order no , date , name

                  //  final TextView d_date = (TextView) findViewById(R.id.o_date);
                    Intent ord_in = new Intent ( OrderSum.this, OrderInformation.class ); 
                    ord_in.putExtra ( "text_order", home_ornum.getText().toString() );
                   // ord_in.putExtra ( "text_date", d_date.getText().toString() );
                    ord_in.putExtra ( "text_custName", cust_name.getText().toString() );
                    ord_in.putExtra ( "text_items", items.getText().toString() );
                    startActivity(ord_in);
                    overridePendingTransition(R.anim.slide_in_left, R.anim.slide_out_left);


                }
          });
          /***************************PROCEED BUTTON***************************/



            /**for the ROOF2**/   
                  final ActionBar actionBar = getActionBar(); 
                  BitmapDrawable background = new BitmapDrawable 
                  (BitmapFactory.decodeResource(getResources(), R.drawable.roof2)); 
                  ///background.setTileModeX(android.graphics.Shader.TileMode.REPEAT); 
                  actionBar.setBackgroundDrawable(background);
            /**end for the ROOF2**/


} /// end of OnCreate



@Override
public void onBackPressed() {
    super.onBackPressed();
    /*Intent myIntent = new Intent(OrderSum.this,
            Home.class);
    startActivity(myIntent);*/
    TextView on = (TextView) findViewById(R.id.Displayordernum);
    Intent home_in = new Intent ( OrderSum.this, Home.class ); 
    home_in.putExtra ( "text_ordernumber", on.getText().toString() );
    startActivity(home_in); 
    overridePendingTransition(R.anim.slide_in_left, R.anim.slide_out_left);

}


// DownloadJSON AsyncTask
    private class DownloadJSON extends AsyncTask<Void, Void, Void> {

        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            // Create a progressdialog
            mProgressDialog = new ProgressDialog(OrderSum.this);
            // Set progressdialog title
            mProgressDialog.setTitle("Your orders");
            // Set progressdialog message
            mProgressDialog.setMessage("Loading...");
            mProgressDialog.setIndeterminate(false);
            // Show progressdialog
            mProgressDialog.show();
        }


        @Override
        protected Void doInBackground(Void... params) {

            TextView custname = (TextView) findViewById(R.id.DisplaycustName);
            TextView homeornum = (TextView) findViewById(R.id.Displayordernum);

             Intent home_in = getIntent();
             homeornum.setText(home_in.getStringExtra("text_ordernumber")); //tv is the TextView  
             custname.setText(home_in.getStringExtra("text_name")); //name is the TextView



            // Create an array
            arraylist = new ArrayList<HashMap<String, String>>();
            // Retrieve JSON Objects from the given URL address
        JSONObject jsonobject = JSONfunctions.getJSONfromURL(ordershow) ;

            //jsonobject = JSONfunctions.getJSONfromURL(,)
            try {
                // Locate the array name in JSON==
                jsonarray = jsonobject.getJSONArray("orders");
            for (int i = 0; i < jsonarray.length(); i++) {
                    HashMap<String, String> map = new HashMap<String, String>();
                    jsonobject = jsonarray.getJSONObject(i);
                    // Retrive JSON Objects
                    /* from db orders = id,ord_name,ord_desc,
                    ord_price,ord_qty,customer_id,ord_num,price_x_quan , image  jsonobjecy = from db*/
                    map.put("id", jsonobject.getString("id"));
                    map.put("ord_name", jsonobject.getString("ord_name"));
                    map.put("ord_price", jsonobject.getString("ord_price"));
                    map.put("ord_qty", jsonobject.getString("ord_qty"));
                    map.put("customer_id", jsonobject.getString("customer_id"));
                    map.put("ord_num", jsonobject.getString("ord_num"));
                    map.put("price_x_quan", jsonobject.getString("price_x_quan"));
                    map.put("image", jsonobject.getString("image"));
                    map.put("text_ordernumber",home_in.getStringExtra("text_ordernumber"));
                    map.put("text_name",home_in.getStringExtra("text_name"));

                    // Set the JSON Objects into the array
                    arraylist.add(map);

                }


            } catch (JSONException e) {
                Log.e("Error", e.getMessage());
                e.printStackTrace();
            }

            return null;
        }

        @Override
        protected void onPostExecute(Void args) {
            // Locate the listview in listview_main.xml
            listview = (ListView) findViewById(R.id.listOrderSummary);

            // Pass the results into ListViewAdapter.java
            adapter = new LvOrderSumAdapter(OrderSum.this, arraylist);
            // Set the adapter to the ListView
            listview.setAdapter(adapter);

            listview.getAdapter().getCount();
            String count = ""+listview.getAdapter().getCount(); 
            items.setText(count);



            // Close the progressdialog
            mProgressDialog.dismiss();
        }
    } 
///

}

公共类OrderSum扩展活动{
列表视图列表；
TextView id；///ver-id
TextView名称；///name-name
TextView；///api-desc
text查看价格；///price
text查看订单数量；///价格
text查看客户数量；/////价格
图像视图图像；
文本视图项目；
文本视图为空；
文本视图主页；
TextView客户名称；
图像按钮添加顺序；
图像按钮继续；
数字时钟时间；
TextView操作系统；
文本视图o_总计；
//声明变量
JSONObject JSONObject；
JSONArray JSONArray；
列表视图列表视图；
LVO适配器；
进程对话框；
ArrayList ArrayList；
静态字符串ID=“ID”；
静态字符串NAME=“ord_NAME”；
静态字符串PRICE=“订单价格”；
静态字符串数量=“订单数量”；
静态字符串CUSTID=“customer\u id”；
静态字符串ORDER=“ord_num”；
静态字符串PXQ=“price\u x\u quan”；
静态字符串IMAGE=“IMAGE”；
静态字符串或=“text\u ordernumber”；
静态字符串ON=“text\u name”；
静态字符串TP=“t_price”；
私有静态字符串ordershow=”http://192.168.43.52/MMOS/api/ordershow.php";
///////////////////////
@SuppressLint（{“SimpleDataFormat”，“NewApi”}）
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
//TODO自动生成的方法存根
super.onCreate（savedInstanceState）；
setContentView（右布局、订单摘要）；
//执行下载JSON异步任务
新建下载JSON（）.execute（）；
/**唯一ID/客户ID***/
DatabaseHandler db=新的DatabaseHandler（getApplicationContext（））；
/**
*Hashmap从Sqlite数据库加载数据
**/
HashMap用户=新建HashMap（）；
user=db.getUserDetails（）；
最终TextView unique_id=（TextView）findViewById（R.id.o_custnum）；
唯一的_id.setText（（CharSequence）user.get（“uid”）；
/**结束**/
/**日期视图***/
TextView h_日期=（TextView）findViewById（R.id.o_日期）；
Calendar c=Calendar.getInstance（）；
简化格式1；
format1=新的SimpleDataFormat（“MMMM dd，yyyy”）；
//格式2=新的简化格式（“dd-MM-yyy-HH-MM-ss”）；
h_date.setText（format1.format（c.getTime（））；
/**结束日期视图***/
cust_name=（TextView）findviewbyd（R.id.DisplaycustName）；
home_ornum=（TextView）findViewById（R.id.Displayordernum）；
时间=（数字时钟）findViewById（R.id.o_时间）；
Intent myIntent=getIntent（）；
home_ornum.setText（myIntent.getStringExtra（“text_ordernumber”）；//订单号是文本视图
cust_name.setText（myIntent.getStringExtra（“text_name”）；//电视是文本视图
items=（TextView）findViewById（R.id.DisplayTotalItems）；
/***************自定义字体***/
Typeface myCustomFont=Typeface.createFromAsset（getAssets（），“fonts/MavenPro.otf”）；
客户名称.设置字体（myCustomFont）；
主页字体（myCustomFont）；
time.setTypeface（myCustomFont）；
日期设置字体（myCustomFont）；
/***************自定义字体************/
addOrder=（ImageButton）findViewById（R.id.btn\u add）；
addOrder.setOnClickListener（新视图.OnClickListener（）{
@凌驾
公共void onClick（视图v）{
//TODO自动生成的方法存根
Intent myIntent=新Intent（OrderSum.this，
类别(类别),；
星触觉（myIntent）；
覆盖转换（R.anim.slide\u in\u left，R.anim.slide\u out\u left）；
}
});
/***************************继续按钮***************************/
继续=（图像按钮）findViewById（R.id.btn\u继续）；
继续.setOnClickListener（新视图.OnClickListener（）{
@凌驾
公共void onClick（视图v）{
//TODO自动生成的方法存根
Intent myIntent=新Intent（OrderSum.this，
OrderInformation.class）；
星触觉（myIntent）；
//uniq id、订单号、日期、名称
//最终文本视图d_日期=（文本视图）findViewById（R.id.o_日期）；
Intent ord_in=新Intent（OrderSum.this，OrderInformation.class）；
ord_in.putExtra（“文本顺序”，home_ornum.getText（）.toString（））；
//ord_in.putExtra（“text_date”，d_date.getText（）.toString（））；
ord_in.putExtra（“text_custName”，cust_name.getText（）.toString（））；
ord_in.putExtra（“text_items”，items.getText（）.toString（））；
星触觉（ord_in）；
覆盖转换（R.anim.slide\u in\u left，R.anim.slide\u out\u left）；
}
});
/***************************继续按钮***************************/
/**对于屋顶2**/
最终ActionBar ActionBar=getActionBar（）；
BitmapDrawable后台=新的BitmapDrawable
（BitmapFactory.decodeResource（getResources（），R.drawable.root2））；
///setTileModeX（android.graphics.Shader.TileMode.REPEAT）；
actionBar.setBackgroundDrawable（背景）；
/**到屋顶为止**/
}///OnCreate结束
@凌驾
public void onBackPressed（）{
public class ListViewAdapter extends BaseAdapter{
// Declare Variables
    Context context;
    LayoutInflater inflater;
    ArrayList<HashMap<String, String>> data;
    ImageLoader imageLoader;
    HashMap<String, String> resultp = new HashMap<String, String>();



    public ListViewAdapter(Context context,
            ArrayList<HashMap<String, String>> arraylist) {
        this.context = context;
        data = arraylist;
        imageLoader = new ImageLoader(context);
    }


    public int getCount() {
        return data.size();
    }

    public Object getItem(int position) {
        return null;
    }

    public long getItemId(int position) {
        return 0;
    }

    @SuppressLint("ViewHolder")
    public View getView(final int position, View convertView, ViewGroup parent) {
        // Declare Variables
        TextView id;
        TextView name;
        TextView desc;
        TextView price;
        TextView iUrl; /// image URL
        TextView iWebUrl ; //imgage kay chels
        ImageView image;



        inflater = (LayoutInflater) context
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        View itemView = inflater.inflate(R.layout.listview_v, parent, false);
        //View itemView = inflater.inflate(R.layout.listview_menu, parent, false);


        // Get the position
        resultp = data.get(position);



        // Locate the TextViews in listview_item.xml
        id = (TextView) itemView.findViewById(R.id.id);
        name = (TextView) itemView.findViewById(R.id.name);
        desc = (TextView) itemView.findViewById(R.id.desc);
        price = (TextView) itemView.findViewById(R.id.price);
        iUrl = (TextView) itemView.findViewById(R.id.imageUrl);
        iWebUrl = (TextView) itemView.findViewById(R.id.imgUrlWeb);
        // Locate the ImageView in listview_item.xml
        image = (ImageView) itemView.findViewById(R.id.imageView1);

        // Capture position and set results to the TextViews
        id.setText(resultp.get(C_Pastries.ID));
        name.setText(resultp.get(C_Pastries.NAME));
        price.setText(resultp.get(C_Pastries.PRICE));
        desc.setText(resultp.get(C_Pastries.DESCRIPTION));

        iUrl.setText(resultp.get(C_Pastries.IMAGE));
        iWebUrl.setText(resultp.get(C_Pastries.IMGIMG));
        //ordnum.setText(resultp.get(Products.EX));

        // Capture position and set results to the ImageView
        // Passes flag images URL into ImageLoader.class
        imageLoader.DisplayImage(resultp.get(C_Pastries.IMAGE), image);




        // Capture ListView item click
            itemView.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v ) {
                // Get the position


                resultp = data.get(position);

                Intent intent = new Intent(context, Menu_Clicked.class);

                // Pass all data rank
                //String listValue = (String) data.get(position).get(Products.aa);
                intent.putExtra("id", resultp.get(C_Pastries.ID));

                intent.putExtra("name", resultp.get(C_Pastries.NAME));
                // Pass all data country
                intent.putExtra("description", resultp.get(C_Pastries.DESCRIPTION));
                // Pass all data population
                intent.putExtra("price",resultp.get(C_Pastries.PRICE));
                // Pass all data flag
                intent.putExtra("image", resultp.get(C_Pastries.IMAGE));
                intent.putExtra("imgimg", resultp.get(C_Pastries.IMGIMG));
                // Start SingleItemView Class
                intent.putExtra("text_ordernumber",resultp.get(C_Pastries.EX));

                context.startActivity(intent);


            }
        });
        return itemView;
    }
}  

    <?php
mysql_connect('localhost','root','')or die ('No Connection');
mysql_select_db('dbmoms');



$sql ="SELECT * FROM orders";
$result = mysql_query($sql);
while($row = mysql_fetch_assoc($result)){
    $arr['orders'][]= $row;

}
$json = json_encode($arr);

$json_encoded_string = json_encode($arr); 
 $json_encoded_string = str_replace("\\/", '/', $json_encoded_string);

echo $json_encoded_string;

?>