AsyncTask HttpConnection in Android - android-asynctask

Question

I want to create httpconnection using asyntask.three parameters are posted to the server
username,password and a search item.the search is provided by the user in an EditText such so that when the user clicks a button,the search item is sent to the server.I want to execute the doInbackground() method in the OnclickListener and display the response from the server on listviews.This is the AsyncTask Class
public class PostToServer extends AsyncTask<String, Void, String> {
#Override
protected void onPostExecute(String result) {
}
#Override
protected String doInBackground(String... arg0) {
try {
HttpClient client = new DefaultHttpClient();
String postURL = "url";
String username ="username";
String password = "password";
HttpPost post = new HttpPost(postURL);
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("user", username));
params.add(new BasicNameValuePair("pass", password));
UrlEncodedFormEntity ent = new UrlEncodedFormEntity(params,HTTP.UTF_8);
post.setEntity(ent);
HttpResponse responsePOST = client.execute(post);
HttpEntity resEntity = responsePOST.getEntity();
if (resEntity != null) {
Log.i("RESPONSE",EntityUtils.toString(resEntity));
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
This the class where the click event is called
public class StartPost extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.result_page);
}
Button Submit = (Button) findViewById(R.id.btn_search);
EditText textvalue = (EditText)findViewById(R.id.searcheditText);
String value = textvalue.getText().toString();
PostToServer post = new PostToServer();
CheckInternetConnection check = new CheckInternetConnection(null);
private OnClickListener click = new OnClickListener() {
#Override
public void onClick(final View v) {
switch(v.getId()){
case R.id.btn_search:
post.execute();
break;
}
}
};
}
Questions
1.What am I doing wrong because it seems the post is not working and How can I display the server results from the onPostExecute()?
Thank You.

Answer 1

Create a onPostExecute method to display the results on your textview.
protected onPostExecute (String result){
TextView tv = (TextView) findViewById(R.id.textview1);
if(result != null){
tv.setText(result);
}
}