Android If-Else-statement stops after else

Android If-Else-statement stops after else - android

So I have below Android code that works. But only until the point pointed out below in the code. The HTTPPost Gets back a JSON string from a webserver. In the postExecute I check the returned JSONObject on the key value "success". If it is 1 then do something. Else do something else. However the "do something else" is not working. Not sure why not. App does not crash but simply goes back to the screen.
Also any tips for better code on below is also appreciated as I am new to this.
import android.app.ProgressDialog;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.AsyncTask;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
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 org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.json.JSONException;
import org.json.JSONObject;
import org.json.JSONTokener;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
public class Registreren extends ActionBarActivity {
EditText inputName;
EditText inputEmail;
EditText inputPass;
TextView textError;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_registreren);
// Importing all assets like buttons, text fields
inputName = (EditText) findViewById(R.id.register_name);
inputEmail = (EditText) findViewById(R.id.register_email);
inputPass = (EditText) findViewById(R.id.register_pass);
textError = (TextView) findViewById(R.id.register_error);
}
public void registreer (View v) {
String serverURL = "http://www.somesite.com";
new LongOperation().execute(serverURL);
}
public void openLogin (View view) {
Intent intent = new Intent(this, Login.class);
startActivity(intent);
}
private class LongOperation extends AsyncTask<String, Void, JSONObject> {
private ProgressDialog Dialog = new ProgressDialog(Registreren.this);
protected void onPreExecute() {
Dialog.setMessage("Een moment geduld aub...");
Dialog.show();
}
protected JSONObject doInBackground(String... urls) {
String naam = inputName.getText().toString();
String email = inputEmail.getText().toString();
String pass = inputPass.getText().toString();
JSONObject finalResult = null;
HttpParams httpParameters = new BasicHttpParams();
//Set the connection timeout and socket timeout parameters (ms)
HttpConnectionParams.setConnectionTimeout(httpParameters, 5000);
HttpConnectionParams.setSoTimeout(httpParameters,5000);
HttpClient httpClient = new DefaultHttpClient(httpParameters);
HttpPost httpPost = new HttpPost("http://www.somesite.com");
try {
List<NameValuePair> nameValuePairs = new ArrayList<>();
nameValuePairs.add(new BasicNameValuePair("username", naam));
nameValuePairs.add(new BasicNameValuePair("email", email));
nameValuePairs.add(new BasicNameValuePair("pass", pass));
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpClient.execute(httpPost);
HttpEntity responseEntity =response.getEntity();
if (responseEntity != null){
BufferedReader reader = new BufferedReader(
new InputStreamReader(responseEntity.getContent(),"UTF-8"));
StringBuilder builder = new StringBuilder();
for (String line ; (line = reader.readLine()) !=null;) {
builder.append(line).append("\n");
}
JSONTokener tokener = new JSONTokener(builder.toString());
try{
finalResult = new JSONObject(tokener);
} catch (JSONException e) {Toast.makeText(getApplicationContext(), "Data error.Probeer het later nog eens", Toast.LENGTH_LONG).show(); }
} else {
Toast.makeText(getApplicationContext(), "Geen response", Toast.LENGTH_LONG).show();
}
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return finalResult;
}
protected void onPostExecute(JSONObject result) {
Integer succes;
String naam;
String pass;
String email;
try {
succes = result.getInt("succes");
naam = result.getString("username");
pass = result.getString("pass");
email = result.getString("email");
if(succes==1){
SharedPreferences userDetails =getSharedPreferences("userdetails", MODE_PRIVATE);
SharedPreferences.Editor edit = userDetails.edit();
edit.clear();
edit.putString("username", naam);
edit.putString("password", pass);
edit.apply();
Intent intent = new Intent (getApplicationContext(),Overzicht.class);
startActivity(intent);
}
else {//in debug i can come until this line
if(naam.equals("user_bestaat")){//this line and below is ignored
TextView t = (TextView)findViewById(R.id.register_error);
t.setText("Gebruikersnaam bestaat al");
}
if(email == "email_bestaat"){
TextView t = (TextView)findViewById(R.id.register_error);
t.setText("Email is al geregistreerd");
}
}
} catch (JSONException e){Toast.makeText(getApplicationContext(), "Data error.Probeer het later nog eens", Toast.LENGTH_LONG).show(); }
Dialog.dismiss();
//SharedPreferences userDetails = getSharedPreferences("userdetails", MODE_PRIVATE);
// System.out.println("value of the userdertails ==========>"+ userDetails);
//String Uname="";
//String pass= "";
// Uname = userDetails.getString("username", "");
//pass = userDetails.getString("password", "");
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_overzicht, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}

Comparing with == means compare by reference which is not the case here. You want to compare the value of two strings.
Change to this
if(email.equals("email_bestaat")){
TextView t = (TextView)findViewById(R.id.register_error);
t.setText("Email is al geregistreerd");
}

Related

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);
}

Authenticate Login to Rest api With single click button

i Edited all my previous question . I solved that long time ago .
but now i am here and just getting all things done :
i have a login activity :
which makes a call to rest api with credentials .
i have created the login activity it works ok but i have to press the button two times in order to perform some action . i think there is a mistake in my code :
here is my login activity ... if anyone can help me in this i will accept it as answer and will close this link on my stickies....
login.java:
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.HttpResponse;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.List;
public class login_act extends Activity {
private ProgressDialog pDialog;
List<NameValuePair> params=null;
static String response = null;
private String url = "http://hostname_ip/rest-api/xxxxx/?format=json";
static String u="";
static String p="";
String temp= "";
// User name
private EditText et_Username;
// Password
private EditText et_Password;
// Sign In
private Button bt_SignIn;
// Message
private TextView tv_Message;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.login_layout);
// Initialization
et_Username = (EditText) findViewById(R.id.u_name);
et_Password = (EditText) findViewById(R.id.password);
bt_SignIn = (Button) findViewById(R.id.sign_in);
tv_Message = (TextView) findViewById(R.id.statusop);
bt_SignIn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View view) {
// Stores User name
String username = String.valueOf(et_Username.getText());
u=username;
// Stores Password
String password = String.valueOf(et_Password.getText());
p=password;
new Getlogin().execute();
}
});
}
private class Getlogin extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
super.onPreExecute();
// Showing progress dialog
pDialog = new ProgressDialog(login_act.this);
pDialog.setMessage("Signing In...");
pDialog.setCancelable(false);
pDialog.show();
}
#Override
protected Void doInBackground(Void... arg0) {
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpEntity httpEntity = null;
HttpResponse httpResponse = null;
String credentials = u + ":" + p;
try {
if (params != null) {
String paramString = URLEncodedUtils
.format(params, "utf-8");
url += "?" + paramString;
}
HttpGet httpGet = new HttpGet(url);
String base64EncodedCredentials = Base64.encodeBytes(credentials.getBytes());
httpGet.addHeader("Authorization", "Basic " + base64EncodedCredentials);
httpResponse = httpClient.execute(httpGet);
httpEntity = httpResponse.getEntity();
temp = response = EntityUtils.toString(httpEntity);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
// Dismiss the progress dialog
if (pDialog.isShowing())
try {
pDialog.dismiss();
if(temp.contains("count")){
tv_Message.setText("Logged In");
Intent go = new Intent(login_act.this,Scnd.class);
Bundle extras = new Bundle();
extras.putString("status", response);
extras.putString("user", u);
extras.putString("pass", p);
// 4. add bundle to intent
go.putExtras(extras);
startActivity(go);
finish();
}else
tv_Message.setText("Invalid username or password");
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
}
i only want if user and pass are ok then intent to new activity . if the user pasword are wrong then display response with incorect user password
but the activity performs it by clicking twice a button . i want to make it single click.. any help ?? i would be thankful.

You need to have an installation of Newfies-Dialer in order to use the API, in other words the API url will be the one from your own server.
The documentation clearly say API URL => http://HOSTNAME_IP/rest-api/campaigns/

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..

Android, send string from app to web server

I am trying to make an app where i am supposed to send data from the application to a web server.
So far i've been searching and not been able to find a working example, i've found some using asynctask which does not work, so any help is appreciated!

try below code :-
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONObject;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import android.app.Activity;
import com.hmkcode.android.vo.Person;
public class MainActivity extends Activity implements OnClickListener {
TextView tvIsConnected;
EditText etName,etCountry,etTwitter;
Button btnPost;
Person person;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// get reference to the views
tvIsConnected = (TextView) findViewById(R.id.tvIsConnected);
etName = (EditText) findViewById(R.id.etName);
etCountry = (EditText) findViewById(R.id.etCountry);
etTwitter = (EditText) findViewById(R.id.etTwitter);
btnPost = (Button) findViewById(R.id.btnPost);
// check if you are connected or not
if(isConnected()){
tvIsConnected.setBackgroundColor(0xFF00CC00);
tvIsConnected.setText("You are conncted");
}
else{
tvIsConnected.setText("You are NOT conncted");
}
// add click listener to Button "POST"
btnPost.setOnClickListener(this);
}
public static String POST(String url, Person person){
InputStream inputStream = null;
String result = "";
try {
// 1. create HttpClient
HttpClient httpclient = new DefaultHttpClient();
// 2. make POST request to the given URL
HttpPost httpPost = new HttpPost(url);
String json = "";
// 3. build jsonObject
JSONObject jsonObject = new JSONObject();
jsonObject.accumulate("name", person.getName());
jsonObject.accumulate("country", person.getCountry());
jsonObject.accumulate("twitter", person.getTwitter());
// 4. convert JSONObject to JSON to String
json = jsonObject.toString();
// ** Alternative way to convert Person object to JSON string usin Jackson Lib
// ObjectMapper mapper = new ObjectMapper();
// json = mapper.writeValueAsString(person);
// 5. set json to StringEntity
StringEntity se = new StringEntity(json);
// 6. set httpPost Entity
httpPost.setEntity(se);
// 7. Set some headers to inform server about the type of the content
httpPost.setHeader("Accept", "application/json");
httpPost.setHeader("Content-type", "application/json");
// 8. Execute POST request to the given URL
HttpResponse httpResponse = httpclient.execute(httpPost);
// 9. receive response as inputStream
inputStream = httpResponse.getEntity().getContent();
// 10. convert inputstream to string
if(inputStream != null)
result = convertInputStreamToString(inputStream);
else
result = "Did not work!";
} catch (Exception e) {
Log.d("InputStream", e.getLocalizedMessage());
}
// 11. return result
return result;
}
public boolean isConnected(){
ConnectivityManager connMgr = (ConnectivityManager) getSystemService(Activity.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
if (networkInfo != null && networkInfo.isConnected())
return true;
else
return false;
}
#Override
public void onClick(View view) {
switch(view.getId()){
case R.id.btnPost:
if(!validate())
Toast.makeText(getBaseContext(), "Enter some data!", Toast.LENGTH_LONG).show();
// call AsynTask to perform network operation on separate thread
new HttpAsyncTask().execute("http://hmkcode.appspot.com/jsonservlet");
break;
}
}
private class HttpAsyncTask extends AsyncTask<String, Void, String> {
#Override
protected String doInBackground(String... urls) {
person = new Person();
person.setName(etName.getText().toString());
person.setCountry(etCountry.getText().toString());
person.setTwitter(etTwitter.getText().toString());
return POST(urls[0],person);
}
// onPostExecute displays the results of the AsyncTask.
#Override
protected void onPostExecute(String result) {
Toast.makeText(getBaseContext(), "Data Sent!", Toast.LENGTH_LONG).show();
}
}
private boolean validate(){
if(etName.getText().toString().trim().equals(""))
return false;
else if(etCountry.getText().toString().trim().equals(""))
return false;
else if(etTwitter.getText().toString().trim().equals(""))
return false;
else
return true;
}
private static 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;
}
}
see below link for more info :-
http://hmkcode.com/android-send-json-data-to-server/
http://androidexample.com/How_To_Make_HTTP_POST_Request_To_Server_-_Android_Example/index.php?view=article_discription&aid=64&aaid=89

Try this,
import java.util.ArrayList;
import java.util.List;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.BasicResponseHandler;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.AsyncTask;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.Toast;
public class AdminLogin extends Activity {
EditText adminUN, adminPass;
CheckBox cb;
Button loginBtn;
HttpPost httppost;
StringBuffer buffer;
HttpResponse response;
HttpClient httpclient;
List<NameValuePair> nameValuePairs;
// Your IP address or your website complete address
String adminLoginURL = "http://192.168.1.1/admin_login.php";
ProgressDialog dialog = null;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.admin_login);
loginBtn = (Button) findViewById(R.id.adminLogin);
adminUN = (EditText) findViewById(R.id.adminUName);
adminPass = (EditText) findViewById(R.id.adminPass);
loginBtn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
new Admin_Login().execute();
}
});
}
class Admin_Login extends AsyncTask<String, String, String> {
#Override
protected void onPreExecute() {
super.onPreExecute();
dialog = new ProgressDialog(AdminLogin.this);
dialog.setMessage("Please Wait..!");
dialog.setIndeterminate(false);
dialog.setCancelable(true);
dialog.show();
}
protected String doInBackground(String... params) {
new Thread(new Runnable() {
public void run() {
login();
}
}).start();
return null;
}
protected void onPostExecute(String file_url) {
// dismiss the dialog once got all details
dialog.dismiss();
}
}
void login() {
try {
httpclient = new DefaultHttpClient();
httppost = new HttpPost(adminLoginURL);
// add your data
nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("username", adminUN
.getText().toString().trim()));
nameValuePairs.add(new BasicNameValuePair("password", adminPass
.getText().toString().trim()));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// Execute HTTP Post Request
response = httpclient.execute(httppost);
ResponseHandler<String> responseHandler = new BasicResponseHandler();
final String response = httpclient.execute(httppost,
responseHandler);
boolean matches = response.startsWith("User Found");
if (matches) {
// Do something start an Activity or do anything you wanted
}
} else {
showAlert();
}
} catch (Exception e) {
dialog.dismiss();
System.out.println("Exception : " + e.getMessage());
}
}
public void showAlert() {
AdminLogin.this.runOnUiThread(new Runnable() {
public void run() {
AlertDialog.Builder builder = new AlertDialog.Builder(
AdminLogin.this);
builder.setTitle("Login Error.");
builder.setMessage("User not Found.")
.setCancelable(false)
.setPositiveButton("OK",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int id) {
}
});
AlertDialog alert = builder.create();
alert.show();
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu items for use in the action bar
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.main_exit, menu);
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle presses on the action bar items
switch (item.getItemId()) {
case R.id.action_exit:
finish();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
Create an .xml file to get the username, password, and login button
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/ic_wall"
android:gravity="center_horizontal"
android:orientation="vertical" >
<EditText
android:id="#+id/adminUName"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:layout_marginTop="50dip"
android:hint="Username"
android:singleLine="true" />
<requestFocus />
<EditText
android:id="#+id/adminPass"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:layout_marginTop="10dip"
android:ems="10"
android:hint="Password"
android:inputType="textPassword"
android:singleLine="true" />
<Button
android:id="#+id/adminLogin"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="20dip"
android:text="Login"
android:textColor="#0b84aa" />
</LinearLayout>
You must have PhpMyAdmin to try this in local system, if you have hosted server part then try use the following php code and run it.
adminLogin.php
<?php
$hostname_localhost ="";
$database_localhost ="";
$username_localhost ="";
$password_localhost ="";
# Make sure above fields are filled with your config values (must)
$localhost = mysql_connect($hostname_localhost,$username_localhost,$password_localhost)
or
trigger_error(mysql_error(),E_USER_ERROR);
mysql_select_db($database_localhost, $localhost);
if (empty($_POST['username'])) {
echo "Please Enter a name";
} else {
$username = $_POST['username'];
}
if (empty($_POST['password'])) {
echo "Please Enter Your Password ";
} else {
$password = SHA1($_POST['password']);
}
$query_search = "select * from adminregister where username = '".$username."' AND password = '".$password."'";
$query_exec = mysql_query($query_search) or die(mysql_error());
$rows = mysql_num_rows($query_exec);
//echo $rows;
if($rows == 0) {
echo "\nNo Such User Found";
}
else {
echo "User Found";
}
mysql_close();
?>
Note: You need to create database and table specified in mysql to feed and retrieve the data
If any errors please leave a comment.

android text not visible

I am sending some information from my application to server and waiting for the response. Before i send i set my textview for message to display "processing request" and after getting response i display a different message.
This processing message is not getting displayed. Is it beacuse the UI is getting blocked due to other operation.
How to handle this. Threading is not giving correct result as need to display the response.
SO that involve UI in the thread .
package com.PandG.app.android.activities;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
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.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.params.HttpConnectionParams;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.content.Intent;
import android.os.Bundle;
import android.text.Html;
import android.util.Log;
import android.view.View;
import android.view.Window;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import com.PandG.app.android.R;
import com.PandG.app.android.dataAccess.SettingsDBAccess;
import com.PandG.app.android.entity.Job;
import com.PandG.app.android.entity.Settings;
import com.PandG.app.android.services.JobsManager;
import com.lib.android.Utils.Utils;
import com.lib.android.activity.BaseActivity;
import com.lib.android.dataAccess.DatabaseManager;
public class JobCheckoutActivity extends BaseActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setViewContent();
}
private void setViewContent() {
Settings setting = getSettings();
requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
setContentView(R.layout.job_checkout);
getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.customtitle);
//new DataProcess().execute(null);
TextView text1 = (TextView)findViewById(R.id.checkoutmessage);
text1.setText("Processiong Job Cart ...");
if(setting!=null){
TextView text2 = (TextView)findViewById(R.id.checkoutheading);
text2.setVisibility(View.GONE);
Button homeButton = (Button)findViewById(R.id.gohome);
homeButton.setVisibility(View.GONE);
JSONObject jobObject =encodeData(setting);
sendDataToServer(jobObject);
}
}
private void sendDataToServer(JSONObject jobObject) {
TextView text1 = (TextView)findViewById(R.id.checkoutmessage);
text1.setText("Processiong Job Cart ...");
HttpClient client = new DefaultHttpClient();
HttpConnectionParams.setConnectionTimeout(client.getParams(), 10000); // Timeout
// Limit
HttpResponse response;
try {
HttpPost post = new HttpPost(Utils.getPostUrl());
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("orderparameters",
jobObject.toString()));
Log.i("Job ORDER", jobObject.toString());
post.setEntity(new UrlEncodedFormEntity(nameValuePairs));
response = client.execute(post);
checkResponseFromServer(response);
ClearCart();
} catch (Exception e) {
Log.w("error", "connection failed");
Toast.makeText(this, "Order not placed due to connection error",
Toast.LENGTH_LONG);
e.printStackTrace();
}
}
private void ClearCart() {
JobsManager.JobsCartList.clear();
}
private void checkResponseFromServer(HttpResponse response) {
try {
if (response != null) {
InputStream in = response.getEntity().getContent();
BufferedReader reader = new BufferedReader(
new InputStreamReader(in));
String line;
StringBuffer buffer = new StringBuffer();
while ((line = reader.readLine()) != null) {
buffer.append(line);
}
in.close();
JSONObject jsonResponse = new JSONObject(buffer.toString());
Log.i("Status", jsonResponse.getString("status"));
Log.i("Status", jsonResponse.getString("message"));
Log.i("Status", jsonResponse.getString("debug"));
TextView text1 = (TextView)findViewById(R.id.checkoutheading);
text1.setVisibility(View.VISIBLE);
TextView text = (TextView) findViewById(R.id.checkoutmessage);
if (jsonResponse.getString("status").equals("SUCC")) {
text.setText( Html.fromHtml(getString(R.string.checkout_body1)));
} else
text.setText(jsonResponse.getString("message")
+ jsonResponse.getString("debug"));
}
} catch (Exception ex) {
}
}
private JSONObject encodeData(Settings setting) {
JSONObject jobObject = new JSONObject();
try {
JSONObject jobject = new JSONObject();
jobject.put("name", setting.getName());
jobject.put("email", setting.getEmail());
jobject.put("phone", setting.getPhone());
jobject.put("school", setting.getSchool());
jobject.put("major", setting.getMajor());
jobObject.put("customer", jobject);
JSONArray jobsarray = new JSONArray();
for (Job job : JobsManager.JobsCartList) {
JSONObject jobEntry = new JSONObject();
jobEntry.put("jobtitle",job.getTitle());
jobEntry.put("qty","1");
jobsarray.put(jobEntry);
}
jobObject.put("orders", jobsarray);
} catch (JSONException ex) {
}
return jobObject;
}
private Settings getSettings() {
SettingsDBAccess settingsDBAccess = new SettingsDBAccess(
DatabaseManager.getInstance());
Settings setting = settingsDBAccess.getSetting();
if (setting==null){
startActivityForResult((new Intent(this,SettingsActivity.class)),Utils
.getDefaultRequestCode());
}
return setting;
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
Settings setting = new SettingsDBAccess(
DatabaseManager.getInstance()).getSetting();
if(setting!=null){
JSONObject jobObject = encodeData(setting);
sendDataToServer(jobObject);
}
}
/* private class DataProcess extends AsyncTask {
#Override
protected void onPostExecute(Object result) {
}
#Override
protected Object doInBackground(Object... arg0) {
processDataandsend();
return null;
}
private void processDataandsend() {
Settings setting = getSettings();
if(setting!=null){
TextView text2 = (TextView)findViewById(R.id.checkoutheading);
text2.setVisibility(View.GONE);
Button homeButton = (Button)findViewById(R.id.gohome);
homeButton.setVisibility(View.GONE);
JSONObject jobObject =encodeData(setting);
sendDataToServer(jobObject);
}
}
} */
}

You should not perform HTTP-work on the UI-thread. Instead use AsyncTask
In your AsyncTask you are only allowed to update the UI in two places:
#Override
protected void onPreExecute()
TextView.setText("Beginning HTTP-work..Please wait");
{
and
#Override
protected void onPostExecute(Void v) {
TextView.setText("Done..SUCCESS!");
}
Use these two to update the UI before and after the HTTP-work has been done.

Long operations must be in background. Best way to implement this on Android, use AsyncTask, for more information: http://developer.android.com/reference/android/os/AsyncTask.html

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

Android If-Else-statement stops after else - android

Comparing with == means compare by reference which is not the case here. You want to compare the value of two strings. Change to this if(email.equals("email_bestaat")){ TextView t = (TextView)findViewById(R.id.register_error); t.setText("Email is al geregistreerd"); }

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