How to Send POST Data to a PHP Script from Android?

How to Send POST Data in Android

For developers proficient in PHP, JavaScript, and other scripting languages but new to Java and Android, this guide provides a solution for sending POST data to a PHP script and displaying the result.

Updated Approach (Android 6.0 )

This updated solution leverages AsyncTask, which is recommended for background tasks in Android.

public class CallAPI extends AsyncTask<String, String, String> {

    @Override
    protected String doInBackground(String... params) {
        String urlString = params[0]; // URL to call
        String data = params[1]; // Data to post

        try {
            URL url = new URL(urlString);
            HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
            OutputStream out = new BufferedOutputStream(urlConnection.getOutputStream());
            BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(out, "UTF-8"));
            writer.write(data);
            writer.flush();
            writer.close();
            out.close();

            urlConnection.connect();
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
    }
}

Original Approach (Android 5.1 and Below)

For devices running Android 5.1 and below, Apache HttpClient can be used:

public void postData() {
    HttpClient httpclient = new DefaultHttpClient();
    HttpPost httppost = new HttpPost("http://www.yoursite.com/script.php");
    List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
    nameValuePairs.add(new BasicNameValuePair("id", "12345"));
    nameValuePairs.add(new BasicNameValuePair("stringdata", "Hi"));
    httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

    try {
        HttpResponse response = httpclient.execute(httppost);
    } catch (Exception e) {
        // Handle exceptions
    }
}

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