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unfortunately android application has been stopped. At Http Post while attempting to call server

Unfortunately android application has been stopped. At Http Post while attempting to call server at post activity please help
HttpClient cli = new DefaultHttpClient();
//HttpPost post = new HttpPost("http://" + sp.getString("ip", "localhost") + "/attendance/cliLogin.php");
HttpPost post = new HttpPost("localhost/attendance/");
// seting post data
List<NameValuePair> loginData = new ArrayList<NameValuePair>(2);
loginData.add(new BasicNameValuePair("uname", uname));
loginData.add(new BasicNameValuePair("pass", pass));
post.setEntity(new UrlEncodedFormEntity(loginData));
// executing login
HttpResponse res = cli.execute(post);
HttpEntity resent = res.getEntity();
String result = EntityUtils.toString(resent);
// reading response
if(result.equals("NoParams"))
Commons.showToast("Something went wrong", true);
else if(result.equals("Login"))
{
navi = new Intent(this, HomeActivity.class);
startActivity(navi);
}
else
Commons.showToast(result, true);
}
catch (HttpHostConnectException e) {
// TODO Auto-generated catch block
e.printStackTrace();
Commons.showToast("Can't reach server, check the Hostname", true);
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
else
Commons.showToast("Username/Password can't be empty", true);
}
}

Could you please share your logcat to see the error? I think that your are calling the php script in your main thread (that is your activity thread) and you may have NetworkOnMainThreadException
If that is the case:
Create a class that extends the AsyncTask.
Override its methods.
In the creator of this class pass the variables and assign them to the fields (variables) of your class.
Make your post in an AsyncTask inside the doInBackground method
And call the AsyncTask execute. Like this:
public class MyTask extends AsyncTask<String,String,String>{
private short errorType = -1;
private String result;
private String uname;
private String pass;
public MyTask(String uname, String pass){
this.uname = uname;
this.pass = pass;
}
#Override
protected String onPostExecute(Void result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
if (errorType == 1){
Commons.showToast("Can't reach server, check the Hostname", true);
}
if(result.equals("NoParams")) {
Commons.showToast("Something went wrong", true); }
else if(result.equals("Login")) {
Intent navi = new Intent(this, HomeActivity.class); startActivity(navi);
}
else {
Commons.showToast(result, true);
}
}
#Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
}
#Override
protected String doInBackground(String... params) {
try
{
HttpClient cli = new DefaultHttpClient();
HttpPost post = new HttpPost("localhost/attendance/");
List<NameValuePair> loginData = new ArrayList<NameValuePair>(2);
loginData.add(new BasicNameValuePair("uname", uname));
loginData.add(new BasicNameValuePair("pass", pass));
post.setEntity(new UrlEncodedFormEntity(loginData));
// executing login
HttpResponse res = cli.execute(post);
HttpEntity resent = res.getEntity();
return result = EntityUtils.toString(resent);
}
catch (HttpHostConnectException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
errorType = 1;
return null;
}
catch (ParseException e) {
// TODO Auto-generated catch block e.printStackTrace();
errorType = 2;
return null;
}
catch (IOException e) {
// TODO Auto-generated catch block e.printStackTrace();
errorType = 3;
return null;
}
catch(Exception e){
errorType = 4;
return null;
}
}
}
And inside the activity make your call like this:
MyTask new MyTask(uname, pass).execute();
Again. All this is applicable only if you have
NetworkOnMainThreadException
Please share your logcat for further help.

Android NetworkOnMainThreadException inside Asyntask class

This code shows the exception when it reach the get sentence (line commented on the code).
The code is the next, consist on get a comments list from Http get Request:
public class ObtencionComentariosPerfil extends AsyncTask<String, Integer, List<Comment>>{
#Override
protected List<Comment> doInBackground(String... params) {
// TODO Auto-generated method stub
HttpClient httpClient = new DefaultHttpClient();
URI url;
List<Comment> listaComentarios = new ArrayList<Comment>();
try {
url = new URI(params[1]);
HttpGet del = new HttpGet(url);
del.setHeader("content-type", "application/json");
del.setHeader("X-Auth-Token", params[0]);
System.out.println("El token params es: "+params[0]);
HttpResponse resp = httpClient.execute(del);// THE EXCEPTION shows here
StatusLine estatus = resp.getStatusLine();
if (estatus.getStatusCode() == 200) {
InputStream is = resp.getEntity().getContent();
CommentsParser parser= new CommentsParser();
listaComentarios = parser.parseoComentarios(is.toString());
} else {
System.out.println("Error");
listaComentarios = null;
}
} catch (URISyntaxException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return listaComentarios;
}
#Override
protected void onPostExecute(List<Comment> lista){
}
}
Here is called from main code:
public List<Comment> obtieneComentariosPerfil(long idUsuario, String aut){
List<Comment> listaComentarios = new ArrayList<Comment>();
String url= "http://"+ip+":8080/api/users/"+idUsuario+"/comments";
String[] params= new String[2];
params[0]=aut;
params[1]=url;
ObtencionComentariosPerfil du = new ObtencionComentariosPerfil();
listaComentarios = du.doInBackground(params);
return listaComentarios;
}
I think it have to be a stupid failure but i cant find the error. Thanks.

Because you call du.doInBackground(params);
you should call du.excute(params) instead

listaComentarios = du.doInBackground(params);
You submit async tasks for execution in a background thread by calling execute(), not by directly calling the doInBackground() callback in the current thread.
Communicate the result back to UI thread in onPostExecute().

Authentication not working in Put method android

How to get response in put method with Authentication using four Headers.In ios it works fine but not in Android.
Authentication code is generated from the data HMAC-SHA256 with the secret key provided after validation as the key
HttpPut put = new HttpPut(xAuthurl);//url
Log.v("put", "" + put);
try {
put.setEntity(new StringEntity(data, "UTF-8"));
} catch (UnsupportedEncodingException e1) {
Log.e(TAG, "UnsupportedEncoding: ", e1);
}
//Here are the four headers......
put.addHeader("Content-type", "application/json");
put.addHeader("x-Auth-user", Validation.id);//id of the profile
put.addHeader("X-Auth-Hash", hexBytes);// Hexadecimal value
put.addHeader("X-Auth-Time", sdf.format(datetime));//date format in utc
HttpResponse response = null;
try {
response = http.execute(put);
Log.v("response", "" + response.getAllHeaders());
} catch (ClientProtocolException e1) { // TODO Auto-generated catch
// block
e1.printStackTrace();
} catch (IOException e1) { // TODO
// Auto-generated catch block
e1.printStackTrace();
}
Log.d(TAG, "This is what we get back:"
+ response.getStatusLine().toString() + ", "
+ response.getEntity().toString());
try {
inputStream = response.getEntity().getContent();
} catch (IllegalStateException e1) { // TODO Auto-generated catch
// block
e1.printStackTrace();
} catch (IOException e1) { // TODO Auto-generated catch block
e1.printStackTrace();
}
if (inputStream != null) {
try {
result = convertInputStreamToString(inputStream);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.v("result", "" + result);
} else {
result = "Did not work!";
}
return 1;
}
private String convertInputStreamToString(InputStream inputStream)
throws IOException {
BufferedReader bufferedReader = new BufferedReader(
new InputStreamReader(inputStream));
String line = "";
String result = "";
while ((line = bufferedReader.readLine()) != null)
result += line;
inputStream.close();
return result;
}
result i get is {"Message":"An error has occurred."}

unable to save data to txt in loop asynctask

I am trying to save every output data in asynctask for each http call.But I am unable to see any data in a file.I really appreciate any help.Thanks in Advance.
final String[] ar={"1","2","3",.............,"25"}
filename="test_file";
myFile = new File("/sdcard/"+filename);
try {
myFile.createNewFile();
fOut = new FileOutputStream(myFile);
} catch (FileNotFoundException e1) {
e1.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
myOutWriter = new OutputStreamWriter(fOut);
for ( j = 0; j < ar.length; j++) {
u="http://www.example.com/"+ar[j];
JSONParser jParser=new JSONParser();
new MyAsyncTask().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR,u);
}
try {
myOutWriter.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
class MyAsyncTask extends AsyncTask<String, String, Void> {
private ProgressDialog progressDialog = new ProgressDialog(MainActivity.this);
InputStream inputStream = null;
String result = "";
protected void onPreExecute() {
progressDialog.setMessage("Downloading your data...");
progressDialog.show();
progressDialog.setOnCancelListener(new OnCancelListener() {
public void onCancel(DialogInterface arg0) {
MyAsyncTask.this.cancel(true);
}
});
}
#Override
protected Void doInBackground(String... params) {
String url_select = params[0];
try {
HttpClient httpclient = new DefaultHttpClient();
HttpResponse httpResponse = httpclient.execute(new HttpGet(url_select));
// receive response as inputStream
inputStream = httpResponse.getEntity().getContent();
//
// // Read content & Log
// inputStream = httpEntity.getContent();
} catch (UnsupportedEncodingException e1) {
Log.e("UnsupportedEncodingException", e1.toString());
e1.printStackTrace();
} catch (ClientProtocolException e2) {
Log.e("ClientProtocolException", e2.toString());
e2.printStackTrace();
} catch (IllegalStateException e3) {
Log.e("IllegalStateException", e3.toString());
e3.printStackTrace();
} catch (IOException e4) {
Log.e("IOException", e4.toString());
e4.printStackTrace();
}
// Convert response to string using String Builder
try {
BufferedReader bReader = new BufferedReader(new InputStreamReader(inputStream, "iso-8859-1"), 8);
StringBuilder sBuilder = new StringBuilder();
String line = null;
while ((line = bReader.readLine()) != null) {
sBuilder.append(line + "\n");
}
inputStream.close();
result = sBuilder.toString();
} catch (Exception e) {
Log.e("StringBuilding & BufferedReader", "Error converting result " + e.toString());
}
return null;
} // protected Void doInBackground(String... params)
protected void onPostExecute(Void v) {
//parse JSON data
try{
JSONObject jArray = new JSONObject(result);
String name = jArray.getString("name");
if (name!=null) {
Log.w("idname", name);
//
myOutWriter.append(name).append("\r\n");
//
Toast.makeText(getBaseContext(), name, 5).show();
}
// End Loop
this.progressDialog.dismiss();
} catch (JSONException e) {
Log.e("JSONException", "Error: " + e.toString());
} // catch (JSONException e)
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} // protected void onPostExecute(Void v)
} //class MyAsyncTask extends AsyncTask<String, String, Void>

for ( j = 0; j < ar.length; j++) {
u="http://www.example.com/"+ar[j];
JSONParser jParser=new JSONParser();
new MyAsyncTask().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR,u);
}
try {
myOutWriter.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
You close the myOutWriter after start MyAsyncTask. So when MyAsyncTask try to write data to file, it throw OutputStreamWriter is closed exception.
You need remove the code of close myOutWriter from here. Add add close code at the end of onPostExecute like below:
void onPostExecute(Void v) {
.....
} catch (JSONException e) {
Log.e("JSONException", "Error: " + e.toString());
} // catch (JSONException e)
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
int count = taskCount.decrementAndGet()
if(count == 0 ) {
try {
myOutWriter.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
} // protected void onPostExecute(Void v)
the definition of taskCount is like this:
AtomicInteger taskCount = new AtomicInteger(ar.length - 1);
At last, I think Thread and CountDownLatch is better option

check if entity not null then write to db
HttpEntity entity = response.getEntity();
if(entity!=null ){
inputStream = entity.getContent();
}

Android - HttpClient execute has a mind of its own - 1 second or 200 seconds

I'm trying to use HttpClient to connect to a php page that logs in and passes back a sessionid and then goes to a new page, using that sessionid and obtains a mySQL datafield associated with that sessionid.
On the first request, HttpClient can take 1.5 seconds, 6 seconds, or 2 minutes. If the first request was slow, subsequence requests seem to be faster, and visaversa.
The HttpClient request occurs when a Button view is clicked
Here's my code:
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
name = (TextView)findViewById(R.id.name);
user = (EditText) findViewById(R.id.user);
pass = (EditText) findViewById(R.id.pass);
submit = (Button) findViewById(R.id.button1);
submit.setOnClickListener(this);
HttpParams params1 = new BasicHttpParams();
params1.setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1);
client = new DefaultHttpClient(params1);
httpclient = new DefaultHttpClient();
// Create a local instance of cookie store
cookieStore = new BasicCookieStore();
// Create local HTTP context
}
public void onClick(View v) {
if (v.getId() == R.id.button1) {
//submit.setClickable(false);
String username = user.getText().toString();
String password = pass.getText().toString();
String targetURL = "<<<<LOGIN PHP URL>>>>";
post = new HttpPost(targetURL);
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("username", username));
params.add(new BasicNameValuePair("password", password));
Log.d("params","params added");
try {
post.setEntity(new UrlEncodedFormEntity(params));
} catch (UnsupportedEncodingException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
Log.d("entity added","entityadded");
Log.d("preex","PRE EXECUTION");
localContext = new BasicHttpContext();
// Bind custom cookie store to the local context
localContext.setAttribute(ClientContext.COOKIE_STORE, cookieStore);
//submit.setText("Logging In...");
new Thread(new Runnable(){
public void run(){
try {
Log.d("pre","pre execute");
response = client.execute(post,localContext);
Log.d("post","post execute");
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
Log.d("post","FIANLLY");
try {
input = response.getEntity().getContent();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.d("response: ",convertStreamToString(input));
getFullName(localContext);
}
}
}).start();}
}
private void getFullName(final HttpContext context){
Log.d("called","called");
String targetURL = "<<<<SESSION CHECKER PHP URL>>>>";
//client1 = new DefaultHttpClient();
post1 = new HttpPost(targetURL);
Log.d("","about to call runable....");
// submit.setText("Obtaining Full Name...");
try {
Log.d("pre","CALLING!");
response = client.execute(post1,context);
Log.d("post","called..");
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
Log.d("post","FIANLLY");
try {
//submit.setText("Full Name Obtained!...");
input = response.getEntity().getContent();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//Log.d("response: ",convertStreamToString(input));
outputResponse(input);
}
}
private void outputResponse(final InputStream in) {
name.post(new Runnable(){
public void run(){
String fullname=convertStreamToString(in);
name.setText("Full Name is: "+fullname);
}
});
}
private static String convertStreamToString(InputStream is) {
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
StringBuilder sb = new StringBuilder();
String line = null;
try {
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return sb.toString();
}
Before I set Http version 1.1 it took double the time, but for my application, the speed cannot be unreliable. This is all on a pretty fast WiFi connections -- can you image Edge or 3G speeds??
So what can I optimize?
Thanks everyone:)
EDIT: I did a new test with: http://www.posttestserver.com/ and it happened pretty fast. The urls I'm using currently aren't my final server urls, they are for a different site on a different server -- shared hosting, so could it be that contacting my shared hosting site is just slow and will be compared to my .net server?
Thanks again !