Обновление значений в wampserver

Question

Теперь я пытаюсь обновить свои баллы, когда новый заказ отправляется в базу данных. Я создал файл php и пытался это сделать, но ничего не происходит. Я совершенно новый и не уверен, как продолжать и что добавить в свою деятельность. Пожалуйста, помогите спасибо.

PHP файл:

<?php 

include_once("connectorder.php"); 
if($_GET["membership"]) 
{$membership = $_GET['membership']; 
} 
if($_GET["points"]) 
{  $points = $_GET['points']; 
} 

$query=mysqli_query($con,"SELECT MAX(points) FROM ".$table_name." WHERE membership = '".$membership."'"); //Get current points 

while($current=mysqli_fetch_assoc($query)){ 
    $newpoints = $current['points'] + $points; //calculate the new points 
} 

$sql = "INSERT ".$table_name." SET points='".$newpoints."' WHERE membership = '".$membership."'"; //update the new points in database 

if ($con->query($sql) === TRUE) { 
echo "Record updated successfully"; 
} else { 
echo "Error updating record: " . $conn->error; 
} 

?> 

коды деятельности:

public class MenuActivity extends Activity { 


private String server = "http://172.16.156.56"; 
private String sql_table = "orders"; 
private ListView list; 
private String txtOrder, txtMember, txtPrice; 
private Button btnAdd; 
ArrayList<String> rows; 

ListView listView1; 
Button btnSubmit; 
ArrayList<CustomItem> itemList, selectedList; 


@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_menu); 


    list=(ListView) findViewById(R.id.listView); 
    btnAdd = (Button)findViewById(R.id.button); 
    rows = new ArrayList<String>(); 


    itemList=new ArrayList<CustomItem>(); 
    itemList.add(new CustomItem("Fried Rice","description","1","Quantity")); 
    itemList.add(new CustomItem("Fried Noodle","description","2","Quantity")); 
    itemList.add(new CustomItem("Prawn noodle","description","3","Quantity")); 
    itemList.add(new CustomItem("Chicken Rice","description","4","Quantity")); 

    int[] prgmImages={R.drawable.friedrice,R.drawable.friednoodle,R.drawable.pnoodle,R.drawable.chickenrice}; 

    listView1 = (ListView) findViewById(R.id.listView); 
    final CustomLVAdapter customLVAdapter = new CustomLVAdapter(this, itemList,prgmImages); 
    listView1.setAdapter(customLVAdapter); 

    Bundle extras = getIntent().getExtras(); 
    final String strMem = extras.getString("Mem"); 

    btnSubmit = (Button) findViewById(R.id.button); 

    btnSubmit.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 







      //go to ReceiptActivity - membership, item, totalprice 





      //Toast.makeText(getApplicationContext(), responseText + " $" + total, 
        // Toast.LENGTH_SHORT).show(); 



      //SelectAll(); 

      confirmdialog(); 


     } 


    }); 


} 

private void confirmdialog() { 

    AlertDialog.Builder alertDialog = new AlertDialog.Builder(MenuActivity.this); 

    // Setting Dialog Title 
    alertDialog.setTitle("Confirmation"); 

    // Setting Dialog Message 
    alertDialog.setMessage("Submit order?"); 



    // Setting Positive "Yes" Button 
    alertDialog.setPositiveButton("YES", new DialogInterface.OnClickListener() { 
     public void onClick(DialogInterface dialog,int which) { 
      //whatever you want to do 
      StringBuffer responseText = new StringBuffer(); 
      selectedList = new ArrayList<CustomItem>(); 
      int total = 0; 
      int points = 0; 

      for (int i = 0; i < itemList.size(); i++) { 
       CustomItem object = itemList.get(i); 
       if (object.isSelected()) { 
        responseText.append(object.getItem() + "," + object.getQty() + ",");//item 
        selectedList.add(object); 
        //calculate price 
        total = (total + Integer.parseInt(object.getQty()) * Integer.parseInt(object.getPrice())); 
        points = (total + Integer.parseInt(object.getQty()) * Integer.parseInt(object.getPrice())); 

       } 


      } 



      txtOrder = responseText.toString(); 
      txtPrice = String.valueOf(total); 
      txtPrice = String.valueOf(points); 

      Bundle extras = getIntent().getExtras(); 
      final String strMem = extras.getString("Mem"); 
      Add(responseText.toString(), strMem, String.valueOf(total),String.valueOf(total)); 

        Intent i = new Intent(getApplicationContext(), ReceiptActivity.class); 
        i.putExtra("Order",txtOrder); 
        i.putExtra("Price",txtPrice); 
        i.putExtra("Mem",strMem); 
        startActivity(i); 
     } 
    }); 

    // Setting Negative "NO" Button 
    alertDialog.setNegativeButton("NO", new DialogInterface.OnClickListener() { 
     public void onClick(DialogInterface dialog, int which) { 
      //cancel the dialog 
      dialog.dismiss(); 
     } 
    }); 


    alertDialog.show(); 
} 

//store in database 

public void Add(final String item, final String membership, final String price, final String points) 
{ 
    RequestQueue MyRequestQueue = Volley.newRequestQueue(this); 
    String url = server + "/insertorder.php"+ "/update.php"; 
    StringRequest MyStringRequest = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() { 
     @Override 
     public void onResponse(String response) { 

     } 
    }, new Response.ErrorListener() { 
     @Override 
     public void onErrorResponse(VolleyError error) { 
     } 
    }) { 
     protected Map<String, String> getParams() { 
      Map<String, String> MyData = new HashMap<String, String>(); 
      MyData.put("item",item); 
      MyData.put("membership",membership); 
      MyData.put("price",price); 
      MyData.put("points",points); 

      return MyData; 
     } 
    }; 
    MyRequestQueue.add(MyStringRequest); 
    SelectAll(); 
} 
public void SelectAll() 
{ 
    RequestQueue MyRequestQueue = Volley.newRequestQueue(this); 
    String url = server + "/fetchorder.php" ; 
    StringRequest MyStringRequest = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() { 
     @Override 
     public void onResponse(String response) { 
      try { 
       JSONObject jsonResponse = new JSONObject(response); 
       JSONArray jsonMainNode = jsonResponse.optJSONArray(sql_table); 
       rows.clear(); 
       for(int i=0; i < jsonMainNode.length(); i++) 
       { 
        JSONObject jsonChildNode = jsonMainNode.getJSONObject(i); 
        String order  = jsonChildNode.optString("item").toString(); 
        String membership  = jsonChildNode.optString("membership").toString(); 
        String price = jsonChildNode.optString("price").toString(); 
        String points = jsonChildNode.optString("points").toString(); 

        rows.add(order + ", " + membership + ", " + price + ", " + points); 
       } 
       ArrayAdapter<String> adapter = new ArrayAdapter<String>(MenuActivity.this, 
         android.R.layout.simple_list_item_1, rows); 
       list.setAdapter(adapter); 

      } catch (JSONException e) { 
       e.printStackTrace(); 
      } 
     } 
    }, new Response.ErrorListener() { //Create an error listener to handle errors appropriately. 
     @Override 
     public void onErrorResponse(VolleyError error) { 
      //This code is executed if there is an error. 
     } 
    }); 
    MyRequestQueue.add(MyStringRequest); 



} 



} 

Answer 1

Просто используйте UPDATE вместо INSERT.

Ваш SQL заявление должно быть как ....

$sql = "UPDATE ".$table_name." SET points='".$newpoints."' WHERE membership = '".$membership."'";