http://stackoverflow.com/questions/16867625/android-php-user-registration/16867804#16867804

gistfile1.txt

import java.util.ArrayList;

import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;

import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity extends Activity {

  EditText username, email, password;
	Button btn;
	HttpResponse response;

	public void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

		username = (EditText) findViewById(R.id.usr_name);
		email = (EditText) findViewById(R.id.email);
		password = (EditText) findViewById(R.id.password);

		btn = (Button) findViewById(R.id.regbtn);
		btn.setOnClickListener(new View.OnClickListener() {

			public void onClick(View v) {

				Task t = new Task();
				t.execute();
			}
		});
	}

	class Task extends AsyncTask<Void, Void, Void> {

		@Override
		protected Void doInBackground(Void... params) {
			Log.d("Log","success"); 
			HttpClient httpclient = new DefaultHttpClient();
			HttpPost httppost = new HttpPost("http://1337z.eu/");

			try {

				ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
				nameValuePairs.add(new BasicNameValuePair("uname", username
						.toString()));
				nameValuePairs.add(new BasicNameValuePair("email", email
						.getText().toString()));
				nameValuePairs.add(new BasicNameValuePair("password", password
						.getText().toString()));

				httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
				response = httpclient.execute(httppost);

			} catch (Exception e) {
				e.printStackTrace();
			}
			return null;
			
		}

	}
}