Develop Reference

Update and retrieve chat history in smack with openfire -Android

I am making a chat application with smack library and openfire as a server but everytime i exit the chat conversation activity between two users and come back, the whole chat gets erased. I have already enabled archive settings to store one to one messages in the server but i do not know how to implement it in the app.
I want to show chats history in recyclerview by the sender and the receiver in the recyclerview.
currently i have implemented this function which caused error
private void setChatHistory(String entityBareId) {
EntityBareJid jid = null;
try {
jid = JidCreate.entityBareFrom(entityBareId);
} catch (XmppStringprepException e) {
e.printStackTrace();
}
MamManager manager = MamManager.getInstanceFor(mConnection);
MamManager.MamQueryResult r = null;
try {
try {
r = manager.mostRecentPage(jid, 10);
} catch (SmackException.NotConnectedException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
} catch (XMPPException.XMPPErrorException e) {
e.printStackTrace();
} catch (SmackException.NotLoggedInException e) {
e.printStackTrace();
} catch (SmackException.NoResponseException e) {
e.printStackTrace();
}
if (r.forwardedMessages.size() >= 1) //printing first of them
{
Message message = (Message) r.forwardedMessages.get(0).getForwardedStanza();
Log.i("mam", "message received" + message.getBody());
MessagesData data = new MessagesData("send",message.getBody());
mMessagesData.add(data);
mAdapter = new ConversationAdapter(mMessagesData);
recyclerView.setAdapter(mAdapter);
}
}
Error was
Attempt to read from field 'java.util.List org.jivesoftware.smackx.mam.MamManager$MamQueryResult.forwardedMessages' on a null object reference
At r.forwardedmessages.size()>=1.
Thanks in advance

If you want to keep history of conversation, you must save them in database. MAM just for fetching old conversation from server like when you uninstall or logout the app and decide to reinstall and get old messages.
For getting messages from server be sure you already enabled it, then forwarded messages shouldnt be null. here is a guide to enable it.

Stripe payment gateway in android

I am integrating Stripe in my android application.
I have found two issues and I am stuck.
First (and major) issue is -
I have got token key from the card information. But when I tried to make my first charge, it shows error in following line.
Stripe.apiKey = "sk_test_0000000000000";
I have googled also but couldn't find any solution.
Creating Stripe Customer - cannot resolve symbol apiKey
I have even seen this kind of question too. But I failed to understand its solution.
Following is my code for making charge:
final String publishableApiKey = BuildConfig.DEBUG ?
"pk_test_000000000000000000" :
//"sk_test_00000000000000000000000" :
getString(R.string.com_stripe_publishable_key);
final TextView cardNumberField = (TextView) findViewById(R.id.cardNumber);
final TextView monthField = (TextView) findViewById(R.id.month);
final TextView yearField = (TextView) findViewById(R.id.year);
TextView cvcField = (TextView) findViewById(R.id.cvc);
Card card = new Card(cardNumberField.getText().toString(),
Integer.valueOf(monthField.getText().toString()),
Integer.valueOf(yearField.getText().toString()),
cvcField.getText().toString());
Stripe stripe = new Stripe();
stripe.createToken(card, publishableApiKey, new TokenCallback() {
public void onSuccess(Token token) {
// TODO: Send Token information to your backend to initiate a charge
Toast.makeText(
getApplicationContext(),
"Charge Token created: " + token.getId(),
Toast.LENGTH_LONG).show();
/*make a charge starts*/
// Set your secret key: remember to change this to your live secret key in production
// Create the charge on Stripe's servers - this will charge the user's card
Stripe.apiKey = "sk_test_0000000000000000000000";
try {
Map<String, Object> chargeParams = new HashMap<String, Object>();
chargeParams.put("amount", 100); // amount in cents, again
chargeParams.put("currency", "usd");
chargeParams.put("source", token.getId());
chargeParams.put("description", "Example charge");
Charge charge = Charge.create(chargeParams);
System.out.println("Charge Log :" + charge);
} catch (CardException e) {
// The card has been declined
} catch (APIException e) {
e.printStackTrace();
} catch (AuthenticationException e) {
e.printStackTrace();
} catch (InvalidRequestException e) {
e.printStackTrace();
} catch (APIConnectionException e) {
e.printStackTrace();
}
/*charge ends*/
}
I have tried these code from different examples. I followed Stripe doc too.
But I got this error:
com.stripe.exception.AuthenticationException: No API key provided. (HINT: set your API key using 'Stripe.apiKey = '.
Second Issue is - about validation.
If I am entering my own card details, and if I write wrong cvv number. It still generates token key.
I have already implemented validation of fields using Stripe's official doc. I don't know how to validate it with real time data.
Solution for the First Issue:
com.stripe.Stripe.apiKey = "sk_test_xxxxxxxxxxxxxxxxxxx";
try {
final Map<String, Object> chargeParams = new HashMap<String, Object>();
chargeParams.put("amount", 500); // amount in cents, again
chargeParams.put("currency", "usd");
chargeParams.put("source", token.getId());
chargeParams.put("description", "Example charge");
new Thread(new Runnable() {
#Override
public void run() {
Charge charge = null;
try {
charge = Charge.create(chargeParams);
} catch (AuthenticationException e) {
e.printStackTrace();
} catch (InvalidRequestException e) {
e.printStackTrace();
} catch (APIConnectionException e) {
e.printStackTrace();
} catch (CardException e) {
e.printStackTrace();
} catch (APIException e) {
e.printStackTrace();
}
System.out.println("Charge Log :" + charge);
}
}).start();
} catch (Exception e) {
e.printStackTrace();
}

Stripe's Android bindings only let you tokenize card information. Once the token has been created, it must be sent to an external server where you can use it in API requests.
You cannot use the token directly from the app as the app must never have access to your secret key, where it could easily be extracted by an attacker who would then have access to your account.
Re. your second question, the card isn't validated with the bank when the token is created (there are still some basic sanity checks, such as checking the number of digits, the fact that the expiry date is in the future, etc.). It is only when you use the token in a server-side API request that the card will be checked with the bank.

Getting SmackException NoResponseException while creating a new group using Smack 4.1

I am using the below code to create Multi user group but getting Timeout error, even if my timeout error is 10sec.
public void createGroup() {
String roomId = "Group_test003" + "#icoveri.com";
String nick = "Grouptest";
try {
MultiUserChatManager manager = multiUserChatManager.getInstanceFor(connection);
MultiUserChat muc = manager.getMultiUserChat(roomId);
muc.create(nick);
Form form = muc.getConfigurationForm();
Form submitForm = form.createAnswerForm();
List<FormField> fields = form.getFields();
for (int i = 0; i < fields.size(); i++) {
FormField field = (FormField) fields.get(i);
if (!FormField.Type.hidden.equals(field.getType()) && field.getVariable() != null) {
submitForm.setDefaultAnswer(field.getVariable());
}
}
List owners = new ArrayList();
owners.add(user1234 + "#icoveri.com");
submitForm.setAnswer("muc#roomconfig_roomowners", owners);
muc.sendConfigurationForm(submitForm);
} catch (XMPPException e) {
e.printStackTrace();
} catch (SmackException.NoResponseException e) {
e.printStackTrace();
} catch (SmackException.NotConnectedException e) {
e.printStackTrace();
} catch (SmackException e) {
e.printStackTrace();
}
}
The error which I am getting is
org.jivesoftware.smack.SmackException$NoResponseException: No response
received within reply timeout. Timeout was 10000ms (~10s). Used
filter: AndFilter: (FromMatchesFilter (full):
Group_test003#iscoveri.com/Grouptest, StanzaTypeFilter:
org.jivesoftware.smack.packet.Presence).
at
org.jivesoftware.smack.PacketCollector.nextResultOrThrow(PacketCollector.java:229)
at
org.jivesoftware.smackx.muc.MultiUserChat.enter(MultiUserChat.java:311)
at
org.jivesoftware.smackx.muc.MultiUserChat.createOrJoin(MultiUserChat.java:400)
at
org.jivesoftware.smackx.muc.MultiUserChat.createOrJoin(MultiUserChat.java:376)

I have got the solution. The problem was in my service i.e. iscoveri.com. I had to use different service name to create the group.

I also have spent a couple hours trying to correct the same error; in my case, the problem happened when I used XMPPBOSHConnection, but not when using XMPPTCPConnection.

Trying to verify person specific url then bring up login screen in Android

I'm trying to make an application where the person connects to their specific website and can then access the data from it. The first page asks them to put in the url. I then parse this and need to verify the url's existence so I can move them to the login screen. How do I go about doing this? I'm trying HttpURLConnections but I'm not having much luck. Thoughts?

Try the below code :
try {
int status = 0;
try {
HttpURLConnection httpConnection = (HttpURLConnection) new URL(
"http://www.google.com").openConnection();
httpConnection.setRequestMethod("HEAD");
Log.e("StatusCode",httpConnection.getResponseCode());
if ((httpConnection.getResponseCode() == 200)||(httpConnection.getResponseCode() == 302)) {
status = 1;
}
} catch (Exception ex) {}
if (status == 1) {
Log.e("WebSite","Found");
} else {
Log.e("WebSite","NotFound");
}
} catch (Exception ex1) {
Log.e("Error",ex1.getMessage().toString());
}

Can't receive mails with Pop in Android

I can receive my mails with Imap with this code sample :
URLName server = new URLName("imaps://" + username + ":"+ password + "#imap.gmail.com/INBOX");
Session session = Session.getDefaultInstance(new Properties(), null);
Folder folder = session.getFolder(server);
if (folder == null)
{
System.exit(0);
}
folder.open(Folder.READ_ONLY);
Message[] messages = folder.getMessages();
But sometimes Imap doesn't give any service and at those times I want to use Pop but I couldn't use it with my code. It is different the other codes for using receive mail. But in Android only this code is working.
What should I change in this code to work with Pop?

First, there's a nice URLName constructor that takes all the component pieces as separate parameters, so you don't have to do string concatenation.
Switch from IMAP to POP3 requires changing the protocol name as well as the host name. See the JavaMail FAQ for examples. The protocol name is "pop3s" and the host name is "pop.gmail.com".
Finally, you should use Session.getInstance instead of Session.getDefaultInstance. Compare the javadocs for the two methods to understand why.

How about this one.Really worked for me!!(Source:here)
String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";
Properties pop3Props = new Properties();
pop3Props.setProperty("mail.pop3.socketFactory.class", SSL_FACTORY);
pop3Props.setProperty("mail.pop3.socketFactory.fallback", "false");
pop3Props.setProperty("mail.pop3.port", "995");
pop3Props.setProperty("mail.pop3.socketFactory.port", "995");
URLName url = new URLName("pop3", "pop.gmail.com", 995, "","youremailid#gmail.com",yourpassword);
Session session = Session.getInstance(pop3Props, null);
Store store = new POP3SSLStore(session, url);
try {
store.connect();
} catch (MessagingException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
Folder folder = null;
try {
folder = store.getDefaultFolder();
folder = folder.getFolder("INBOX");
} catch (MessagingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if (folder == null) {
System.exit(0);
}
try {
folder.open(Folder.READ_ONLY);
} catch (MessagingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Try retreiving folder via store object.And also mention that the folder you wish to retreive is INBOX!Also note that in settings,port number is 995 form pop.(You may leave the first six lines as they are.)