Develop Reference

how to call method in login page

i'm currently trying to make a validation for a login page, which is to validate whether the account is in my database or not, i'm to call the method of invokelogin(), but it seems but i don't know how to call the method, need some help with it.
import android.app.Activity;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;
public class Activity_Login extends Activity{
private Button btnSignIn;
String username;
String pass;
public static final String USER_NAME = "USERNAME";
EditText txtUser;
EditText Pass;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
btnSignIn = (Button) findViewById(R.id.btnSignIn);
btnSignIn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
launchActivity3();
}
});
}
public void launchActivity3() {
txtUser = (EditText) findViewById(R.id.txtUser);
Pass = (EditText) findViewById(R.id.txtPass);
if (txtUser.getText().toString().equals("")) {
Toast.makeText(Activity_Login.this, "UserName must Be Filled", Toast.LENGTH_SHORT).show();
} else if (Pass.getText().toString().equals("")) {
Toast.makeText(Activity_Login.this, "Password must be Filled", Toast.LENGTH_SHORT).show();
} else {
invokeLogin();
}
Intent intent_SignIn = new Intent(Activity_Login.this, Activity_Drawer2.class);
startActivity(intent_SignIn);
}
public void invokeLogin(View view){
username = txtUser.getText().toString();
pass = Pass.getText().toString();
login(username,pass);
}
private void login (final String username, String pass){
class LoginAsync extends AsyncTask<String, Void, String> {
private Dialog loadingDialog;
#Override
protected void onPreExecute() {
super.onPreExecute();
loadingDialog = ProgressDialog.show(Activity_Login.this, "Please wait", "Loading...");
}
#Override
protected String doInBackground(String... params) {
String uname = params[0];
String pass = params[1];
InputStream is = null;
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("username", uname));
nameValuePairs.add(new BasicNameValuePair("password", pass));
String result = null;
try {
HttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost("http://10.10.1.11/login.php");
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpClient.execute(httpPost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(is, "UTF-8"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
result = sb.toString();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return result;
}
#Override
protected void onPostExecute(String result) {
String s = result.trim();
loadingDialog.dismiss();
if (s.equalsIgnoreCase("success")) {
Intent intent = new Intent(Activity_Login.this, Activity_Drawer2.class);
intent.putExtra(USER_NAME, username);
finish();
startActivity(intent);
} else {
Toast.makeText(getApplicationContext(), "Invalid User Name or Password", Toast.LENGTH_LONG).show();
}
}
}
LoginAsync la = new LoginAsync();
la.execute(username, pass);
}
}

You can pass txtUser and Pass to invokeLogin();
so it look like invokeLogin(txtUser,Pass);
Then your invokeLogin method
public void invokeLogin(String username, String pass){
login(username,pass);
}

Converting DefaultHttpClient to HttpUrlConnection

Hello guys so i'm having difficult in changing this classes that i've created to httpurlConnection. i've seraced the web and im not familiar at all with the httpUrlConnection
App flow:
coming to MainActivity => OnTokenAcuired => GetCokie => Auth
then i have an httpPostRequest
MainActivity:
package com.ap2.demo.comunication;
import android.accounts.Account;
import android.accounts.AccountManager;
import android.app.Activity;
import android.content.Intent;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Spinner;
import com.ap2.demo.R;
import com.ap2.demo.general.SplashActivity;
import org.apache.http.impl.client.DefaultHttpClient;
import java.util.ArrayList;
public class MainActivity extends Activity {
AccountManager accountManager;
private Account[] accounts;
Spinner spinner;
public static DefaultHttpClient httpClient = new DefaultHttpClient();
Account account;
public static String email = "";
ImageView img;
public static boolean enteredOnce = false;
public static String uniqueIDPhone = "";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
accountManager = AccountManager.get(getApplicationContext());
// assembling all gmail accounts
accounts = accountManager.getAccountsByType("com.google");
// add all gmail accounts :
ArrayList<String> accountList = new ArrayList<String>();
for (Account account : accounts) {
accountList.add(account.name);
}
// setting spinner to be viewed
spinner = (Spinner) findViewById(R.id.account);
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this,
android.R.layout.simple_spinner_item, accountList);
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(dataAdapter);
img = (ImageView) findViewById(R.id.splash_door);
//Button startAuth = (Button) findViewById(R.id.startAuth);
img.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
spinner = (Spinner) findViewById(R.id.account);
account = accounts[spinner.getSelectedItemPosition()];
email = account.name;
// getIntent().putExtra("task", 1);
accountManager.getAuthToken(account, "ah", null, false,
new OnTokenAcquired(httpClient, MainActivity.this), null);
Intent intent = new Intent(MainActivity.this, SplashActivity.class);
startActivity(intent);
}
});
}
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
if (resultCode == RESULT_OK) {
accountManager.getAuthToken(account, "ah", null, false,
new OnTokenAcquired(httpClient, MainActivity.this), null);
}
else if(resultCode == RESULT_CANCELED){
// user canceled
}
}
}
OnTokenAcquired:
package com.ap2.demo.comunication;
import android.accounts.AccountManager;
import android.accounts.AccountManagerCallback;
import android.accounts.AccountManagerFuture;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import com.ap2.demo.enumPackage.Constants;
import org.apache.http.impl.client.DefaultHttpClient;
/**
* Created by Daniel on 19-Jun-15.
*/
/*the result for the auth token request is returned to your application
via the Account Manager Callback you specified when making the request.
check the returned bundle if an Intent is stored against the AccountManager.KEY_INTENT key.
if there is an Intent then start the activity using that intent to ask for user permission
otherwise you can retrieve the auth token from the bundle.*/
public class OnTokenAcquired implements AccountManagerCallback<Bundle> {
private static final int USER_PERMISSION = 989;
private DefaultHttpClient httpclient;
Activity activity;
public OnTokenAcquired(DefaultHttpClient httpclient, Activity activity)
{
this.httpclient = httpclient;
this.activity = activity;
}
#Override
public void run(AccountManagerFuture<Bundle> result) {
Bundle bundle;
try {
bundle = (Bundle) result.getResult();
if (bundle.containsKey(AccountManager.KEY_INTENT)) {
Intent intent = bundle.getParcelable(AccountManager.KEY_INTENT);
intent.setFlags(intent.getFlags() & ~Intent.FLAG_ACTIVITY_NEW_TASK);
activity.startActivityForResult(intent, USER_PERMISSION);
} else {
setAuthToken(bundle);
}
}
catch(Exception e){
e.printStackTrace();
}
}
//using the auth token and ask for a auth cookie
protected void setAuthToken(Bundle bundle) {
String authToken = bundle.getString(AccountManager.KEY_AUTHTOKEN);
new GetCookie(httpclient, Constants.SERVER_REQUESTS.MY_APP_ID, activity.getBaseContext()).execute(authToken);
}
}
package com.ap2.demo.comunication;
import android.content.Context;
import android.content.Intent;
import android.os.AsyncTask;
import com.ap2.demo.enumPackage.Constants;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.params.ClientPNames;
import org.apache.http.cookie.Cookie;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.HttpParams;
import java.io.ByteArrayOutputStream;
/**
* Created by Daniel on 19-Jun-15.
*/
public class GetCookie extends AsyncTask<String, Void, Boolean> {
String appId;
HttpParams params;
private HttpResponse response;
Context context;
private DefaultHttpClient httpclient;
public GetCookie(DefaultHttpClient httpclient, String appId, Context context)
{
this.httpclient = httpclient;
params = httpclient.getParams();
this.appId = appId;
this.context = context;
}
protected Boolean doInBackground(String... tokens) {
try {
// Don't follow redirects
params.setBooleanParameter(ClientPNames.HANDLE_REDIRECTS, false);
HttpGet httpGet = new HttpGet("http://" + appId
+ ".appspot.com/_ah/login?continue=http://" + appId + ".appspot.com/&auth=" + tokens[0]);
response = httpclient.execute(httpGet);
ByteArrayOutputStream out = new ByteArrayOutputStream();
response.getEntity().writeTo(out);
out.close();
if(response.getStatusLine().getStatusCode() != 302){
// Response should be a redirect
return false;
}
//check if we received the ACSID or the SACSID cookie, depends on http or https request
for(Cookie cookie : httpclient.getCookieStore().getCookies()) {
if(cookie.getName().equals("ACSID") || cookie.getName().equals("SACSID")){
return true;
}
}
} catch (Exception e) {
e.printStackTrace();
cancel(true);
} finally {
params.setBooleanParameter(ClientPNames.HANDLE_REDIRECTS, true);
}
return false;
}
protected void onPostExecute(Boolean result)
{
new Auth(httpclient, context).execute(Constants.SERVER_REQUESTS.LOGIN);
}
}
package com.ap2.demo.comunication;
import android.content.Context;
import android.os.AsyncTask;
import android.telephony.TelephonyManager;
import android.widget.Toast;
import com.ap2.demo.R;
import com.ap2.demo.enumPackage.Constants;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.StatusLine;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.ByteArrayOutputStream;
/**
* Created by Daniel on 19-Jun-15.
*/
public class Auth extends AsyncTask<String, Void, Boolean> {
private DefaultHttpClient httpclient;
private HttpResponse response;
private String content = null;
Context context;
public Auth(DefaultHttpClient httpclient, Context context)
{
this.httpclient = httpclient;
this.context = context;
}
protected Boolean doInBackground(String... urls) {
try {
HttpGet httpGet = new HttpGet(urls[0]);
response = httpclient.execute(httpGet);
StatusLine statusLine = response.getStatusLine();
if(statusLine.getStatusCode() == HttpStatus.SC_OK){
ByteArrayOutputStream out = new ByteArrayOutputStream();
response.getEntity().writeTo(out);
out.close();
content = out.toString();
return true;
}
} catch (Exception e) {
e.printStackTrace();
cancel(true);
}
return false;
}
//display the response from the request above
protected void onPostExecute(Boolean result) {
if (content != null) {
try {
System.out.print(result);
JSONObject obj = new JSONObject(content);
String status = obj.getString(Constants.LOGIN_SERVICE.STATUS);
if (status.equals(Constants.LOGIN_SERVICE.LOGIN_STATUS_OF_USER)) {
Toast.makeText(context, R.string.user_already_logged_in_status,
Toast.LENGTH_LONG).show();
} else {
Toast.makeText(context, R.string.welcome_message,
Toast.LENGTH_LONG).show();
}
} catch (JSONException e) {
Toast.makeText(context, R.string.failed_to_login + content,
Toast.LENGTH_LONG).show();
}
} else {
Toast.makeText(context, R.string.could_not_loged_to_server,
Toast.LENGTH_LONG).show();
}
}
}
now notice im using the same httpclient because of the auth and cockie:
package com.ap2.demo.channels;
import android.app.Activity;
import android.os.AsyncTask;
import com.ap2.demo.comunication.MainActivity;
import com.ap2.demo.enumPackage.Constants;
import com.ap2.demo.main_activity.MapWithMarkers;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.message.BasicNameValuePair;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
/**
* Created by Daniel on 30-Jun-15.
*/
public class ServerRequestAddChannel extends AsyncTask<String, String, String> {
Activity activity;
String name;
public ServerRequestAddChannel(Activity activity, String name) {
this.activity = activity;
this.name = name;
}
#Override
protected String doInBackground(String... params) {
HttpPost httppost = new HttpPost(params[0]);
try {
// i have name and path only left id
int idCounter = MapWithMarkers.id_counter++;
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
String name_of_channel = name;
if (name.equals(Constants.REVIEWS_CHANNEL.NAME)) {
// add special id to reviews channel
nameValuePairs.add(new BasicNameValuePair(Constants.REVIEWS_CHANNEL.ID, Constants.REVIEWS_CHANNEL.ID));
} else {
name_of_channel = name + Integer.toString(idCounter);
// taking off all free space for unique id
name_of_channel = name_of_channel.replaceAll(" ","");
nameValuePairs.add(new BasicNameValuePair(Constants.CHANNEL_REQUESTS.CHANNEL_TAG_ID, name_of_channel));
}
nameValuePairs.add(new BasicNameValuePair(Constants.CHANNEL_REQUESTS.CHANNEL_TAG_NAME, name));
nameValuePairs.add(new BasicNameValuePair(Constants.CHANNEL_REQUESTS.CHANNEL_TAG_ICON, ""));
// adding the channel to my new list
if (!name_of_channel.equals(Constants.REVIEWS_CHANNEL.NAME)) {
MapWithMarkers.channels_map.put(name_of_channel, new ChannelItem(name_of_channel, "", name));
MapWithMarkers.my_subscriptions.add(name_of_channel);
}
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// Execute HTTP Post Request
HttpResponse response = MainActivity.httpClient.execute(httppost);
HttpEntity entity = response.getEntity();
String text = getASCIIContentFromEntity(entity);
return response.getStatusLine().getReasonPhrase().toString();
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
} catch (IOException e) {
// TODO Auto-generated catch block
}
return null;
}
protected void onPostExecute(String result) {
((AddChannelActivity) activity).moveToNextIntent();
}
protected String getASCIIContentFromEntity(HttpEntity entity)
throws IllegalStateException, IOException {
InputStream in = entity.getContent();
StringBuffer out = new StringBuffer();
int n = 1;
while (n > 0) {
byte[] b = new byte[4096];
n = in.read(b);
if (n > 0)
out.append(new String(b, 0, n));
}
return out.toString();
}
}
please help..

Spinner items not showing using Adapter in Android Studio

I'm working on an Android app that uses spinner and was connected to a MySQL server, but it seems that the dropdown list is not showing on the spinner.
package edu.sti.mobileinstructorevaluation;
import android.os.AsyncTask;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
public class MainActivity extends ActionBarActivity {
ArrayList<String> listItems=new ArrayList<>();
ArrayAdapter<String> adapter;
Spinner sp;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
sp=(Spinner)findViewById(R.id.spinner);
adapter=new ArrayAdapter<String>(this,R.layout.spinner_layout,R.id.txt,listItems);
sp.setAdapter(adapter);
}
public void onStart(){
super.onStart();
BackTask bt=new BackTask();
bt.execute();
}
private class BackTask extends AsyncTask<Void,Void,Void> {
ArrayList<String> list;
protected void onPreExecute(){
super.onPreExecute();
list=new ArrayList<>();
}
protected Void doInBackground(Void...params){
InputStream is=null;
String result="";
try{
HttpClient httpclient=new DefaultHttpClient();
HttpPost httppost= new HttpPost("http://10.0.2.2:8080/mobieva/getcourse.php");
HttpResponse response=httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
// Get our response as a String.
is = entity.getContent();
}catch(IOException e){
e.printStackTrace();
}
//convert response to string
try{
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"utf-8"));
String line = null;
while ((line = reader.readLine()) != null) {
result+=line;
}
is.close();
//result=sb.toString();
}catch(Exception e){
e.printStackTrace();
}
// parse json data
try{
JSONArray jArray =new JSONArray(result);
for(int i=0;i<jArray.length();i++){
JSONObject jsonObject=jArray.getJSONObject(i);
// add interviewee name to arraylist
list.add(jsonObject.getString("cname"));
}
}
catch(JSONException e){
e.printStackTrace();
}
return null;
}
protected void onPostExecute(Void result){
listItems.addAll(list);
adapter.notifyDataSetChanged();
}
}
}

Posting a Single image to server locally

I am trying for a simple image upload to local server
What I am trying to do :: I am trying to upload one image to server on click of button
I have referred this link
But i don't know how to implement the postData() function
Link i am trying to post the image::
http://10.0.2.2/Details/
with a name key for the image
MainActivity.java
public class MainActivity extends Activity {
Button submit;
ProgressDialog pDialog;
ImageView imageView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
submit = (Button) findViewById(R.id.SUBMIT_BUTTON_ID);
imageView = (ImageView) findViewById(R.id.imageView1);
submit.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
new MainTest().execute();
}
});
}
public void postData() {
}
/**
* Method to post the image to the server.
* U will have to change the url which will accept the image data.
*/
public class MainTest extends AsyncTask<String, Integer, String> {
#Override
protected void onPreExecute() {
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage("Loading..");
pDialog.setIndeterminate(true);
pDialog.setCancelable(false);
pDialog.show();
}
#Override
protected String doInBackground(String... params) {
postData();
return null;
}
#Override
protected void onPostExecute(String result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
// data=jobj.toString();
pDialog.dismiss();
}
}
}
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_marginTop="32dp"
android:clickable="false"
android:src="#drawable/image" />
<Button
android:id="#+id/SUBMIT_BUTTON_ID"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="47dp"
android:text="SUBMIT" />
</LinearLayout>
Any help on resolving this !
[EDIT- What i tried before]- I was not successful in getting the result
public class MainActivity extends Activity {
Button submit;
ProgressDialog pDialog;
ImageView imageView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
submit = (Button) findViewById(R.id.SUBMIT_BUTTON_ID);
imageView = (ImageView) findViewById(R.id.imageView1);
submit.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
new MainTest().execute();
}
});
}
/**
* Method to post the image to the server.
* U will have to change the url which will accept the image data.
* #throws IOException
*/
public void postImageData() throws IOException
{
Drawable myDrawable = getResources().getDrawable(R.drawable.image);
Bitmap bitmap = ((BitmapDrawable)myDrawable).getBitmap();
HttpClient httpClient = new DefaultHttpClient();
HttpPost postRequest = new HttpPost("http://10.0.2.2:7002/Details/");
MultipartEntity reqEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
try{
ByteArrayOutputStream bos = new ByteArrayOutputStream();
bitmap.compress(CompressFormat.JPEG, 75, bos);
byte[] data = bos.toByteArray();
ByteArrayBody bab = new ByteArrayBody(data, "forest.jpg");
reqEntity.addPart("key", bab);
}
catch(Exception e){
Log.v("MY-Error-Tag", "I got an error"+e);
reqEntity.addPart("key", new StringBody(""));
}
postRequest.setEntity(reqEntity);
HttpResponse response = httpClient.execute(postRequest);
BufferedReader reader = new BufferedReader(new InputStreamReader(response.getEntity().getContent(), "UTF-8"));
String sResponse;
StringBuilder s = new StringBuilder();
while ((sResponse = reader.readLine()) != null) {
s = s.append(sResponse);
}
}
public class MainTest extends AsyncTask<String, Integer, String> {
#Override
protected void onPreExecute() {
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage("Loading..");
pDialog.setIndeterminate(true);
pDialog.setCancelable(false);
pDialog.show();
}
#Override
protected String doInBackground(String... params) {
try {
postImageData();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(String result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
// data=jobj.toString();
pDialog.dismiss();
}
}
}
[FINAL-EDIT]
package com.example.datapostingproject;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.ParseException;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.mime.HttpMultipartMode;
import org.apache.http.entity.mime.MultipartEntity;
import org.apache.http.entity.mime.content.ByteArrayBody;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.entity.mime.content.StringBody;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import android.app.Activity;
import android.app.ProgressDialog;
import android.graphics.Bitmap;
import android.graphics.Bitmap.CompressFormat;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Environment;
import android.util.Base64;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
public class MainActivity extends Activity {
Button submit;
ProgressDialog pDialog;
InputStream is;
ImageView imageView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
submit = (Button) findViewById(R.id.SUBMIT_BUTTON_ID);
imageView = (ImageView) findViewById(R.id.imageView1);
submit.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
new MainTest().execute();
}
});
}
/**
* Method to post the image to the server.
* U will have to change the url which will accept the image data.
* #throws IOException
*/
public void postImageData() {
Bitmap bitmapOrg = BitmapFactory.decodeResource(getResources(),R.drawable.ic_launcher);
ByteArrayOutputStream bao = new ByteArrayOutputStream();
bitmapOrg.compress(Bitmap.CompressFormat.JPEG, 90, bao);
byte [] ba = bao.toByteArray();
String ba1=Base64.encodeToString(ba,Base64.DEFAULT);
ArrayList<NameValuePair> nameValuePairs = new
ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("key",ba1));
try{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new
HttpPost("http://10.0.2.2:7002/Details/");
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());
}
}
public class MainTest extends AsyncTask<String, Integer, String> {
#Override
protected void onPreExecute() {
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage("Loading..");
pDialog.setIndeterminate(true);
pDialog.setCancelable(false);
pDialog.show();
}
#Override
protected String doInBackground(String... params) {
postImageData();
return null;
}
#Override
protected void onPostExecute(String result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
// data=jobj.toString();
pDialog.dismiss();
}
}
}
{stack stace on debugging } - in log
12-08 14:47:50.628: I/.......(433): TypeError: Cannot read property 'key' of undefined
12-08 14:47:50.628: I/.......(433): at C:\ExpressPractice\imageUpload\app.js:17:32
12-08 14:47:50.628: I/.......(433): at callbacks (C:\ExpressPractice\imageUpload\node_modules\express\lib\router\index.js:164:37)
12-08 14:47:50.628: I/.......(433): at param (C:\ExpressPractice\imageUpload\node_modules\express\lib\router\index.js:138:11)
12-08 14:47:50.628: I/.......(433): at pass (C:\ExpressPractice\imageUpload\node_modules\express\lib\router\index.js:145:5)
12-08 14:47:50.628: I/.......(433): at Router._dispatch (C:\ExpressPractice\imageUpload\node_modules\express\lib\router\index.js:173:5)
12-08 14:47:50.628: I/.......(433): at Object.router (C:\ExpressPractice\imageUpload\node_modules\express\lib\router\index.js:33:10)
12-08 14:47:50.628: I/.......(433): at next (C:\ExpressPractice\imageUpload\node_modules\express\node_modules\connect\lib\proto.js:193:15)
12-08 14:47:50.628: I/.......(433): at multipart (C:\ExpressPractice\imageUpload\node_modules\express\node_modules\connect\lib\middleware\multipart.js:86:27)
12-08 14:47:50.628: I/.......(433): at C:\ExpressPractice\imageUpload\node_modules\express\node_modules\connect\lib\middleware\bodyParser.js:57:9
12-08 14:47:50.628: I/.......(433): at C:\ExpressPractice\imageUpload\node_modules\express\node_modules\connect\lib\middleware\urlencoded.js:76:7
12-08 14:47:50.639: E/log_tag(433): Error in http connection java.lang.IllegalStateException: Content has been consumed
second-error trace after removing is = entity.getContent();
12-08 15:04:10.971: I/.......(461): TypeError: Cannot read property 'key' of undefined
12-08 15:04:10.971: I/.......(461): at C:\ExpressPractice\imageUpload\app.js:17:32
12-08 15:04:10.971: I/.......(461): at callbacks (C:\ExpressPractice\imageUpload\node_modules\express\lib\router\index.js:164:37)
12-08 15:04:10.971: I/.......(461): at param (C:\ExpressPractice\imageUpload\node_modules\express\lib\router\index.js:138:11)
12-08 15:04:10.971: I/.......(461): at pass (C:\ExpressPractice\imageUpload\node_modules\express\lib\router\index.js:145:5)
12-08 15:04:10.971: I/.......(461): at Router._dispatch (C:\ExpressPractice\imageUpload\node_modules\express\lib\router\index.js:173:5)
12-08 15:04:10.971: I/.......(461): at Object.router (C:\ExpressPractice\imageUpload\node_modules\express\lib\router\index.js:33:10)
12-08 15:04:10.971: I/.......(461): at next (C:\ExpressPractice\imageUpload\node_modules\express\node_modules\connect\lib\proto.js:193:15)
12-08 15:04:10.971: I/.......(461): at multipart (C:\ExpressPractice\imageUpload\node_modules\express\node_modules\connect\lib\middleware\multipart.js:86:27)
12-08 15:04:10.971: I/.......(461): at C:\ExpressPractice\imageUpload\node_modules\express\node_modules\connect\lib\middleware\bodyParser.js:57:9
12-08 15:04:10.971: I/.......(461): at C:\ExpressPractice\imageUpload\node_modules\express\node_modules\connect\lib\middleware\urlencoded.js:76:7
But from POSTMAN when i send image it works for 'key'
Still not successful in getting image posted !

Use the below an try
public void postData() {
Bitmap bitmapOrg = BitmapFactory.decodeResource(getResources(),R.drawable.ic_launcher);
ByteArrayOutputStream bao = new ByteArrayOutputStream();
bitmapOrg.compress(Bitmap.CompressFormat.JPEG, 90, bao);
byte [] ba = bao.toByteArray();
String ba1=Base64.encodeToString(ba,Base64.DEFAULT);
ArrayList<NameValuePair> nameValuePairs = new
ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("image",ba1));
try{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new
HttpPost("http://10.0.2.2:7002/Details/");
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());
}
}
Edit:
Just for testing try uploading image from sdcard using file path
try
{
String filepath= Environment.getExternalStorageDirectory().getAbsolutePath()+File.separator+"Download"+File.separator+"ic_launcher.png";
HttpClient httpclient = new DefaultHttpClient();
httpclient.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1);
HttpPost httppost = new HttpPost("your url");
File file = new File(filepath);
MultipartEntity mpEntity = new MultipartEntity();
ContentBody cbFile = new FileBody(file, "image/jpeg");
mpEntity.addPart("userfile", cbFile);
httppost.setEntity(mpEntity);
System.out.println("executing request " + httppost.getRequestLine());
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
String _response=EntityUtils.toString(entity);
Log.i(".......",_response);
}catch(Exception e){
e.printStacktrace();
}

Finally with the help of Raghunandan ...... from one of the answers .... found the solution
Ill post the complete answer so that .... this might be helpful to some-one
MainActivity.java
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.ParseException;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.mime.HttpMultipartMode;
import org.apache.http.entity.mime.MultipartEntity;
import org.apache.http.entity.mime.content.ByteArrayBody;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.entity.mime.content.StringBody;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import android.app.Activity;
import android.app.ProgressDialog;
import android.graphics.Bitmap;
import android.graphics.Bitmap.CompressFormat;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Environment;
import android.util.Base64;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
public class MainActivity extends Activity {
Button submit;
ProgressDialog pDialog;
InputStream is;
ImageView imageView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
submit = (Button) findViewById(R.id.SUBMIT_BUTTON_ID);
imageView = (ImageView) findViewById(R.id.imageView1);
submit.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
new MainTest().execute();
}
});
}
/**
* Method to post the image to the server.
* U will have to change the url which will accept the image data.
* #throws IOException
*/
public void postImageData() {
try
{
Bitmap bitmapOrg = BitmapFactory.decodeResource(getResources(),R.drawable.ic_launcher);
HttpClient httpClient = new DefaultHttpClient();
HttpPost postRequest = new HttpPost("http://10.0.2.2:7002/Details/");
MultipartEntity reqEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
try{
ByteArrayOutputStream bos = new ByteArrayOutputStream();
bitmapOrg.compress(CompressFormat.JPEG, 75, bos);
byte[] data = bos.toByteArray();
ByteArrayBody bab = new ByteArrayBody(data, "forest.jpg");
reqEntity.addPart("key", bab);
}
catch(Exception e){
//Log.v("Exception in Image", ""+e);
reqEntity.addPart("picture", new StringBody(""));
}
postRequest.setEntity(reqEntity);
HttpResponse response = httpClient.execute(postRequest);
BufferedReader reader = new BufferedReader(new InputStreamReader(response.getEntity().getContent(), "UTF-8"));
String sResponse;
StringBuilder s = new StringBuilder();
while ((sResponse = reader.readLine()) != null) {
s = s.append(sResponse);
}
}catch(Exception e){
e.getStackTrace();
}
}
public class MainTest extends AsyncTask<String, Integer, String> {
#Override
protected void onPreExecute() {
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage("Loading..");
pDialog.setIndeterminate(true);
pDialog.setCancelable(false);
pDialog.show();
}
#Override
protected String doInBackground(String... params) {
postImageData();
return null;
}
#Override
protected void onPostExecute(String result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
// data=jobj.toString();
pDialog.dismiss();
}
}
}
ExpressJS code
app.js
var express=require('express');
var fs=require('fs');
var http=require('http');
var crypto=require('crypto');
var app=express();
app.set('port',process.env.PORT||7002);
app.use('/Details',express.static(__dirname+'/public/images'));
//.use(express.cookieParser());
app.use(express.bodyParser());
app.post('/Details/',function(req,res,next){
var file_name=req.files.key.originalFilename;
console.log(file_name);
crypto.randomBytes(8, function(ex, buf) {
var array = req.files.key.originalFilename.split('.');
var type = array[array.length - 1];
var name = buf.toString('hex') + '.' + type;
fs.rename(req.files.key.path, './public/images/' + name, function(e) {
if (e) {
res.send(500, e.message);
} else
{
res.send("I got the message - This i confirm");
}
});
});
});
app.get('/Details/',function(req,res){
res.send("Image displayed");
});
http.createServer(app).listen(app.get('port'),function(){
console.log('Express server listening on port'+app.get('port'));
});
Point to keep in mind ::
Make sure you send data as multipart from client(android)
Then make sure u accept data on server side also as multipart

ProgressDialog is invisible

Hy!!
I have a problem with the progressdialog.
My used code:
package com.android.skiptvad;
import java.io.InputStreamReader;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.graphics.LightingColorFilter;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import com.android.skiptvad.*;
public class Login extends Activity {
/** Called when the activity is first created. */
TextView tvuser;
String sessionid;
ProgressDialog pd = null;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.login);
tvuser = (TextView) findViewById(R.id.tvuser);
TextView tvpw = (TextView) findViewById(R.id.tvpw);
final EditText etuser = (EditText) findViewById(R.id.etuser);
final EditText etpw = (EditText) findViewById(R.id.etpw);
Button btlogin = (Button)findViewById(R.id.btlogin);
btlogin.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
if (etuser.getText() != null && etpw.getText()!= null)
{
runOnUiThread(new Runnable() {
#Override
public void run() {
pd = ProgressDialog.show(Login.this,"","Loading. Please wait...", true);
pd.show();
Thread t = new Thread() {
public void run(){
download(etuser.getText().toString(), md5(etpw.getText().toString()));
pd.dismiss();
}
};
t.run();
}
});
}
}
});
}
public void download (final String user, final String pw)
{
try{
HttpClient client = new DefaultHttpClient();
String postURL = "link_deleted";
HttpPost post = new HttpPost(postURL);
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("username", user));
params.add(new BasicNameValuePair("password", pw));
UrlEncodedFormEntity ent = new UrlEncodedFormEntity(params,HTTP.UTF_8);
post.setEntity(ent);
HttpResponse responsePOST = client.execute(post);
HttpEntity resEntity = responsePOST.getEntity();
final JSONObject jObject = new JSONObject(EntityUtils.toString(resEntity));
JSONObject menuObject = jObject.getJSONObject("responseData");
if (jObject.getInt("responseStatus")== 200 && jObject.get("responseDetails")!= null)
{
sessionid = menuObject.getString("session_id");
finish();
}
else
{
//dismissDialog(DIALOG_LOADING);
if (jObject.getInt("responseStatus")== 500)
{
throw new Exception("Server Error");
}
else if (jObject.getInt("responseStatus")== 400)
{
throw new Exception("Wrong User/Password");
}
else
{
throw new Exception();
}
}
//pd.dismiss();
} catch (Exception e) {
//dismissDialog(DIALOG_LOADING);
Toast toast ;
toast = Toast.makeText(getApplicationContext(), e.getMessage(), 500);
toast.show();
}
}
private String md5(String in) {
MessageDigest digest;
try {
digest = MessageDigest.getInstance("MD5");
digest.reset();
digest.update(in.getBytes());
byte[] a = digest.digest();
int len = a.length;
StringBuilder sb = new StringBuilder(len << 1);
for (int i = 0; i < len; i++) {
sb.append(Character.forDigit((a[i] & 0xf0) >> 4, 16));
sb.append(Character.forDigit(a[i] & 0x0f, 16));
}
return sb.toString();
} catch (NoSuchAlgorithmException e) { e.printStackTrace(); }
return null;
}
}
No error occurs in the Dalvik Debug Monitor.
Please help

I would recommend to use AsyncTask for this case. So in your AsyncTask.onPreExecute() you call Activity.showDialog(int id), do your networking job in AsyncTask.doInBackground() and Activity.dismissDialog(int id) the dialog in AsyncTask.onPostExecute().
I think that's the most correct way of doing such "under-popup" things.