使用Android将JSON发送到PHP

I am trying to send JSON to php and store the data that sent but I cant make it work

my Android Code

  public void sendToServer(String txt) throws JSONException{

            String path = "http://10.0.0.6:8888/json.php";

            HttpClient client = new DefaultHttpClient();
            HttpConnectionParams.setConnectionTimeout(client.getParams(), 10000); // Timeout
                                                                                    // Limit
            HttpResponse response;
            JSONObject json = new JSONObject();

            try {
                HttpPost post = new HttpPost(path);
                json.put("text", txt);
                Log.i("jason Object", json.toString()); //This print the data perfectly 
                post.setHeader("json", json.toString());
                post.setHeader("Accept", "application/json");

                Log.i("Done", "DONE 1");

                StringEntity se = new StringEntity(json.toString());

                se.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE,
                        "application/json"));
                Log.i("Done", "DONE 2");

                ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
                nameValuePairs.add(new BasicNameValuePair("myjson", json.toString()));
                post.setEntity(new UrlEncodedFormEntity(nameValuePairs)); 


                Log.i("Done", "DONE 3");

                response = client.execute(post);

                /* Checking response */
                if (response != null) {
                    InputStream in = response.getEntity().getContent(); // Get the
                                                                        // data in
                                                                            // the
                                                                            // entity
                    String a = convertStreamToString(in);
                    Log.i("Read from Server", a);
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
                     }

and my php code

<?php  

$decoded = json_decode(stripslashes($_POST['myjson']));
if($decoded)
$con = mysql_connect('localhost','root','root') 
       or die('Cannot connect to the DB');
mysql_select_db('deaf',$con);
mysql_query("INSERT INTO text
VALUES ('".$decoded->{'text'}"')");
mysql_close($con);
$posts = array(1);
 header('Content-type: application/json');
 echo json_encode(array('posts'=>$posts)); 

else
echo "error";
  ?>

the insert statement doesn't work , i spent hours trying to fix it , nothing worked please help me , thanks

There are a few issues with this.

1. You seem to just be cramming the json into arbitrary parts of your code (json header, a never used StringEntity, the myjson url-encoded form field). I would recommend simply making the body of the request the JSON document. However, there are other approaches, so let's try to get the myjson working. If you do, I would change the name to something like document. It doesn't need to be in the header, and you can remove StringEntity.
2. There are very few correct uses for stripslashes. You should not have to run it on form input. If you do, that may mean magic_quotes is enabled. magic_quotes has been removed from PHP (5.4 and later) and should never be used.
3. I recommend you use prepared statements. If not, you should use mysql_real_escape_string. Otherwise, you will be vulnerable to SQL injection.

4. You can simplify the object access. So the code should be:  

   mysql_query("INSERT INTO text VALUES ('" . mysql_real_scape_string($decoded->text) . "')");

If the insert statement fails, please post what the errors are, including mysql_error.