How to Submit POST Data from an Android App to a PHP Script?

Submitting POST Data in Android

Android application development may present a learning curve for programmers proficient in other languages like PHP and JavaScript. When the need arises to transmit POST data to PHP scripts, understanding the appropriate approach becomes crucial.

To facilitate the process, consider utilizing the AsyncTask class. Here's a sample implementation that provides a solid foundation for sending data and receiving results:

public class CallAPI extends AsyncTask<String, String, String> {
    // Optionally set context variables here

    @Override
    protected void onPreExecute() {
        super.onPreExecute();
    }

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

        OutputStream out = null;
        try {
            URL url = new URL(urlString);
            HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
            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());
        }

        return null; // Modify this to process the response from the PHP script
    }
}

This approach utilizes the built-in HTTPURLConnection class to establish a connection and transmit data effectively. The BufferedWriter facilitates data writing, ensuring a smooth and efficient transmission process.

Note: AsyncTask has been deprecated in Android API level 30. Consult official documentation or relevant resources for up-to-date implementation details.

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