Connection to http://localhost:8080 refused in Android

Question

I am trying to consume a REST service in android and I am getting the following error:

org.apache.http.conn.HttpHostConnectException: Connection to  http://localhost:8080 refused

I have introduced the permission: uses-permission android:name="android.permission.INTERNET"
I am running the code in a emulator and it works but when I try to run in my smartphone it fails.

PD: When I run in the emulator I use http://10.0.2.2:8080.

public boolean checkConnection(){
    String res = "";
    boolean serverUp = false;

    try {
        HttpClient client = new DefaultHttpClient();
        //HttpGet request = new HttpGet("http://10.0.2.2:8080/prueba_conexion");
        HttpGet request = new HttpGet("http://localhost:8080/prueba_conexion");
        HttpResponse response = client.execute(request);

        BufferedReader rd = new BufferedReader(new InputStreamReader(
                response.getEntity().getContent()));

        String linea = "";
        while ((linea = rd.readLine()) != null) {
            res += linea;
        }

        serverUp = Boolean.parseBoolean(res);

    } catch (ClientProtocolException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return serverUp;
}

Answer 1

Localhost doesnt work on your phone, because it refers to the phone itself.

You need to get your local IP address and use it instead ie. 192.168.something.something usually.