Question

I am trying to connection with php-MySQL using below code

try{
    HttpClient httpclient = new DefaultHttpClient();
    HttpPost httppost = new HttpPost("http://127.0.0.1/mytable.php");
    // HttpPost httppost = new HttpPost("http://localhost/mytable.php");
    httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
    HttpResponse response = httpclient.execute(httppost);
    HttpEntity entity = response.getEntity();
    is = entity.getContent();
}catch(Exception e){
     Log.e("log_tag", "Error in http connection"+e.toString());
}

when control goes on httpclient.execute(httppost); it throws an exception:

org.apache.http.conn.HttpHostConnectException: Connection to http://127.0.0.1 refused

I also add <uses-permission android:name="android.permission.INTERNET" /> to my AndroidManifest.xml file.

When I test my php file directly from a browser, it works fine. Any suggestions?

Answer 1

From the emulator, il you want to access your physical computer, you must use the following IP address :

10.0.2.2

The one you used, 127.0.0.1, points to the machine inside which your code is executed — i.e. the emulator itself.

As you don’t have an HTTP server running on your Android emulator, your application cannot connect to it — which explains the error message you get.

For more informations, you should read the following section of the manual : Network Address Space