CODEWITHSUNDEEP
phpandroidmysql
Loganayaki Palanisamy
Loganayaki Palanisamy

Reputation: 417

can't send data from android to PHP

I am new to develop android applications. I need to store ID in in WAMP server. When I try to run my code, emulator shows "Unfortunately myapp has stopped" message and I can't send data from android to PHP.

I am trying to fix this for past two days. I added my activity to the manifest file. Here is my .java file:

public class MainActivity extends Activity {
    private ProgressDialog pDialog;

    JSONParser jsonParser = new JSONParser();
    EditText inputid;

    private static String url_sample = "http://localhost/android_connect/sample.php";
    // JSON Node names
    private static final String TAG_SUCCESS = "success";

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        // Edit Text
        inputid = (EditText) findViewById(R.id.editText1);

        Button button1 = (Button) findViewById(R.id.button1);
        button1.setOnClickListener(new View.OnClickListener() {
            public void onClick(View view) {
                // creating new product in background thread
                new add().execute();
            }
        });
    }

    class add extends AsyncTask<String, String,String> {
      /**
       * Before starting background thread Show Progress Dialog
       * */
       @Override
        protected void onPreExecute() {
            super.onPreExecute();
            pDialog = new ProgressDialog(MainActivity.this);
            pDialog.setMessage("your Registration is processing..wait for few sec..");
            pDialog.setIndeterminate(false);
            pDialog.setCancelable(true);
            pDialog.show();
        }

        protected String doInBackground(String... args) {
            String id = inputid.getText().toString();

            // Building Parameters
            List<NameValuePair> params = new ArrayList<NameValuePair>();
            params.add(new BasicNameValuePair("id",id));

            // getting JSON Object
            // Note that create product url accepts POST method
            JSONObject json = jsonParser.makeHttpRequest(url_sample, "POST", params);
            // check log cat for response
            Log.d("Create Response", json.toString());

            // check for success tag
            try {
                int success = json.getInt(TAG_SUCCESS);

                if (success == 1) {
                    // successfully created product
                    Intent i = getIntent();
                    setResult(100,i);

                    // closing this screen
                    finish();
                } else {
                    // failed to create product
                }
            }
            catch (Exception e) {
                e.printStackTrace();
            }
            return doInBackground();
        }

       /**
        * After completing background task Dismiss the progress dialog
        * **/
        protected void onPostExecute(String file_url) {
            // dismiss the dialog once done
            pDialog.dismiss();
        }
    }
}

PHP code is:

<?php
$response = array();
if (isset($_POST['id']))
{
    $userid = $_POST['id'];
    require_once __DIR__ . '/db_connect.php';
    $db = new DB_CONNECT();
    $result = mysql_query("INSERT INTO id(ID) VALUES('$userid')");
    echo $userid;
    if ($result) 
    {
        $response["success"] = 1;
        $response["message"] = " Registered successfully";
        echo json_encode($response);
    }
    else 
    {
        $response["success"] = 0;
        $response["message"] = "Oops! An error occurred.";
        echo json_encode($response);
    }
}
else 
{
    $response["success"] = 0;
    $response["message"] = "Required field(s) is missing";
    echo json_encode($response);
}
?>

no error in both PHP and Android coding..logcat shows error messages..some are

04-09 17:06:02.552: I/Choreographer(10719): Skipped 40 frames!  The application may be doing too much work on its main thread.

Upvotes: 3

Views: 484

Answers (3)

Uku Loskit
Uku Loskit

Reputation: 42040

You seem to be calling your code recursively, in doInBackground(...) you are once again calling doInBackground, and also without arguments (probably gives you a NoSuchMethodException), according to your specification you must return a string, but seeing as you are not using the result you might as well return a null (or change the specification to Void).

Also, the reason that you are not seeing the stacktrace is that you are probably filtering for log statements, whilst e.printStackTrace() does not use log statements.

Edit: Please use Log.e("MyActivityNameHere", e.toString()) instead of e.prinStackTrace() to see the exception

Upvotes: 2

Antony
Antony

Reputation: 603

If you are using localhost, then you should call the url like this 

      private static String url_sample = "http://10.0.2.2/android_connect/sample.php";

Upvotes: 0

Antony
Antony

Reputation: 603

You are getting the error message because of the line

    return doInBackground();

you are calling the doInBackground() method recursively, which gives the thread heavy work load.

try to return some string (in your case, just return null;)

Upvotes: 0

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