HttpClient.execute(HttpPost) on Android 4.2 error

Question

I am following this website http://givemepass.blogspot.hk/2011/12/http-server.html to try to use the android application connect the PHP server to get message.

GetS

Answer 1

You are running network related operation on the ui thread. You will get NetworkOnMainThreadException post honeycomb.

Use a Thread or Asynctask

Invoke asynctask

   new TheTask().execute("http://192.168.1.88/androidtesting.php");

AsyncTask

http://developer.android.com/reference/android/os/AsyncTask.html

class TheTask extends AsyncTask<String,String,String>
    {

@Override
protected String onPostExecute(Void result) {
    // TODO Auto-generated method stub
    super.onPostExecute(result);
    // update textview here
    textView.setText("Server message is "+result);
}

@Override
protected void onPreExecute() {
    // TODO Auto-generated method stub
    super.onPreExecute();
}

@Override
protected String doInBackground(String... params) {
     try
        {
            HttpClient httpclient = new DefaultHttpClient();
            HttpPost method = new HttpPost(params[0]);
            HttpResponse response = httpclient.execute(method);
            HttpEntity entity = response.getEntity();
            if(entity != null){
                return EntityUtils.toString(entity);
            }
            else{
                return "No string.";
            }
         }
         catch(Exception e){
             return "Network problem";
         }

}
}

Update HttpClient is deprecated in api 23. Use HttpUrlConnection.

http://developer.android.com/reference/java/net/HttpURLConnection.html

Answer 2

You need to run long running tasks, like network, calls on a separate Thread as Sotirios Delimanolis said. AsyncTask is probably the way to go.