Post Json con Volley

gistfile1.txt

package com.sviluppo.pierangelo.timesheet;

import android.app.Application;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.SharedPreferences;
import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import com.android.volley.AuthFailureError;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.VolleyLog;
import com.android.volley.toolbox.JsonObjectRequest;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;

import org.apache.http.client.methods.HttpPost;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.UnsupportedEncodingException;
import java.text.DateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class StartActivity extends AppCompatActivity
{
    public static final String MY_USER_PREFERENCE = "MyPrefsFile";

    public static final String myurl = "http://timesheet.web-dev.info/timesheets.json";


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

        // richiamo SharedPreferences
        SharedPreferences prefs = getSharedPreferences(MY_USER_PREFERENCE, MODE_PRIVATE);
        String restoredUser = prefs.getString("mUsername", null);

        TextView txtBenvenuto = (TextView) findViewById(R.id.labelBenvenuto);
        txtBenvenuto.setText("Benvenuto " + restoredUser);

        // ottengo data e ora attuali
        String current_time = DateFormat.getDateTimeInstance().format(new Date());
        Log.d("data", current_time);

        TextView txtDate = (TextView) findViewById(R.id.labelDate);
        txtDate.setText(current_time);

        Button btnInizio = (Button) findViewById(R.id.btnInizio);
        btnInizio.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String url = "http://timesheet.web-dev.info/timesheets.json";

                try {
                    RequestQueue requestQueue = Volley.newRequestQueue(v.getContext());
                    // Prepares POST data...
                    JSONObject jsonBody = new JSONObject();
                    jsonBody.put("worker_id", "1");
                    final String mRequestBody = jsonBody.toString();
                    // Volley request...
                    StringRequest request = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() {
                        @Override
                        public void onResponse(String response) {
                            Log.i("VOLLEY", response);
                        }
                    }, new Response.ErrorListener() {
                        @Override
                        public void onErrorResponse(VolleyError error) {
                            Log.e("VOLLEY", error.toString());
                        }
                    }) {
                        @Override
                        public String getBodyContentType() {
                            return "application/json; charset=utf-8";
                        }

                        @Override
                        public byte[] getBody() throws AuthFailureError {
                            try {
                                return mRequestBody == null ? null : mRequestBody.getBytes("utf-8");
                            } catch (UnsupportedEncodingException uee) {
                                VolleyLog.wtf("Unsupported Encoding while trying to get the bytes of %s using %s",
                                        mRequestBody, "utf-8");
                                return null;
                            }
                        }
                    };
                    requestQueue.add(request);
                } catch (JSONException e) {
                    e.printStackTrace();
                }
            }

        });
    }

}

Json_POST-to_Rail_with_Volley.txt

        try {
            RequestQueue requestQueue = Volley.newRequestQueue(this);
            String URL = "http://...";
            // Prepares POST data...
            JSONObject jsonBody = new JSONObject();
            jsonBody.put("TakeoffID", "2");
            jsonBody.put("ViewPhoto1", "image base64 content");
            jsonBody.put("ViewPhoto2", "image base64 content");
            // "OrderLineid": "964"...
            JSONObject jsonObject1 = new JSONObject();
            jsonObject1.put("OrderLineid","964");
            jsonObject1.put("OrderLinePhoto1","image base64 content");
            jsonObject1.put("OrderLinePhoto2","image base64 content");
            // "OrderLineid": "963"...
            JSONObject jsonObject2 = new JSONObject();
            jsonObject2.put("OrderLineid","963");
            jsonObject2.put("OrderLinePhoto1","image base64 content");
            jsonObject2.put("OrderLinePhoto2","image base64 content");
            JSONArray jsonArray = new JSONArray();
            jsonArray.put(jsonObject1);
            jsonArray.put(jsonObject2);
            // "LineItems"...
            jsonBody.put("LineItems", jsonArray);
            final String mRequestBody = jsonBody.toString();
            // Volley request...
            StringRequest request = new StringRequest(Request.Method.POST, URL, new Response.Listener<String>() {
                @Override
                public void onResponse(String response) {
                    Log.i("VOLLEY", response);
                }
            }, new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {
                    Log.e("VOLLEY", error.toString());
                }
            }) {
                @Override
                public String getBodyContentType() {
                    return "application/json; charset=utf-8";
                }
                @Override
                public byte[] getBody() throws AuthFailureError {
                    try {
                        return mRequestBody == null ? null : mRequestBody.getBytes("utf-8");
                    } catch (UnsupportedEncodingException uee) {
                        VolleyLog.wtf("Unsupported Encoding while trying to get the bytes of %s using %s",
                                mRequestBody, "utf-8");
                        return null;
                    }
                }
            };
            requestQueue.add(request);
        } catch (JSONException e) {
            e.printStackTrace();
        }
Hope it helps!