我正在尝试在数据库中添加多个记录我正在用android中的string-request方法向php脚本发送json数组来添加这些记录，但是没有得到php中json数组的结果。我只想在mysql中添加多个记录，这就是为什么要向脚本发送json数组，通过获取其中的所有数据来添加这些记录
这里是插入数据函数

private void InsertData() {

if(arrayList.size()>0) {
Toast.makeText(getApplicationContext(), "list not null "+i+arrayList.size(), 
 Toast.LENGTH_LONG).show();

//for (i=0;i<arrayList.size();i++) {
    //Toast.makeText(getApplicationContext(),"inside for loop", Toast.LENGTH_LONG).show();

    StringRequest stringRequest = new StringRequest(Request.Method.POST,
            Constants.insert_macthes,
            new Response.Listener<String>() {
                @Override
                public void onResponse(String response) {

                    try {
                        JSONObject jsonObject = new JSONObject(response);

                        if (jsonObject.getInt("success") == 1) {

                            Toast.makeText(getApplicationContext(), jsonObject.getString("message"), Toast.LENGTH_LONG).show();

                        } else

                            Toast.makeText(getApplicationContext(), "not added", Toast.LENGTH_LONG).show();

                        dis = jsonObject.getString("message");
                    } catch (JSONException e) {
                        e.printStackTrace();
                    }
                }

            },
            new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {

                    if (error instanceof TimeoutError || error instanceof NoConnectionError) {
                        Toast.makeText(MyMatchas.this,
                                "Error time out",
                                Toast.LENGTH_LONG).show();
                    } else if (error instanceof AuthFailureError) {
                        //TODO
                        Toast.makeText(MyMatchas.this,
                                "Auth Error time out",
                                Toast.LENGTH_LONG).show();
                    } else if (error instanceof ServerError) {
                        //TODO
                        Toast.makeText(MyMatchas.this,
                                "Server Error time out",
                                Toast.LENGTH_LONG).show();
                    } else if (error instanceof NetworkError) {
                        //TODO
                        Toast.makeText(MyMatchas.this,
                                " Network Error time out",
                                Toast.LENGTH_LONG).show();
                    } else if (error instanceof ParseError) {
                        Toast.makeText(MyMatchas.this,
                                "Parse Error time out",
                                Toast.LENGTH_LONG).show();
                        //TODO
                    }

                }
            }) {
        @Override
        protected Map<String, String> getParams() {
            JSONArray array=new JSONArray();

            JSONObject jsonObject=new JSONObject();
            for(i=0;i<arrayList.size();i++)
            {
                Log.v("fetching record:",arrayList.get(i).getId());
                arr[i]="dog_id"+arrayList.get(i).getId()+"dog_name"+arrayList.get(i).getDog_name()+"score"+arrayList.get(i).getDog_score()+"user_id"+ String.valueOf(SharedPrefManager.getInstance(MyMatchas.this).getUserid());
                try {
                    //Log.v("put in json:",arrayList.get(i).getId());
                    jsonObject.put("dog_id",arrayList.get(i).getId());
                    jsonObject.put("dog_name",arrayList.get(i).getDog_name());
                    jsonObject.put("score",arrayList.get(i).getDog_score());
                    jsonObject.put("user_id",String.valueOf(SharedPrefManager.getInstance(MyMatchas.this).getUserid()));

                } catch (JSONException e) {
                    Log.v("error exceptiion:",arrayList.get(i).getId());
                    e.printStackTrace();
                }
                array.put(jsonObject);
            }
            HashMap<String ,String> params=new HashMap<String, String>();
            Log.v("All data:",jsonObject.toString());
            Log.v("json object data:",array.toString());
            params.put("params",array.toString());

            return params;
        }
    };

    // Creating RequestQueue.
    RequestQueue requestQueue = Volley.newRequestQueue(MyMatchas.this);

    // Adding the StringRequest object into requestQueue.
    requestQueue.add(stringRequest);

    // }
  // Toast.makeText(getApplicationContext(),dis,Toast.LENGTH_LONG).show();

 }

下面是php脚本

<?php
 $con=mysqli_connect("localhost","m","rt","Friend");

 if($_SERVER['REQUEST_METHOD']=='POST'){

$arr = $_POST['params'];

 $json = json_decode($arr,true);
    echo $json;
foreach($json as $obj){

$Sql_Query = "INSERT INTO Match_list (dog_id,score,dog_name,User_ID) values 
   ('$obj->dog_id','$obj->dog_name','$obj->score','$obj->user_id')";

   if($con->query($Sql_Query) === TRUE)
   {

    die(json_encode(array("success"=>1,"message"=>"Data Added 
 Successfuly")));

   }

      }

   }

  mysqli_close($con);
 ?>