Develop Reference

Robovm Local notifications not showing up. Scheduling seems successful. Am I missing something?

I am trying to get local/scheduled notifications working. With push messages (using Parse) working fine I though local would be easy, but even though the registration seems to go fine (didRegisterUserNotificationSettings is fired) and the scheduling seems to work too, the notification does not show up. I have tested on iOS 7 (iphone 4) and iOS 9 (iphone simulator). What am I missing?
here is my code:
#Override
public boolean didFinishLaunching(UIApplication application,UIApplicationLaunchOptions launchOptions)
{
boolean retval = super.didFinishLaunching(application, launchOptions);
//some other stuff happens here regarding parse push. But since this works I have cut it out
registerForPush();
return retval;
}
public void registerForPush()
{
if (IOSLauncher.getOSMajorVersion() >= 8)
{
UIUserNotificationType userNotificationTypes = UIUserNotificationType.with(UIUserNotificationType.Alert, UIUserNotificationType.Badge, UIUserNotificationType.Sound);
UIUserNotificationSettings settings = new UIUserNotificationSettings(userNotificationTypes, null);
application.registerUserNotificationSettings(settings);
application.registerForRemoteNotifications();
}
else
{
UIRemoteNotificationType type = UIRemoteNotificationType.with(UIRemoteNotificationType.Alert, UIRemoteNotificationType.Badge, UIRemoteNotificationType.Sound);
application.registerForRemoteNotificationTypes(type);
}
}
public void scheduleNotification(String title, String text, Date date, int ID)
{
UILocalNotification notification = new UILocalNotification();
if(getOSMajorVersion() >= 8 && getOSMinorVersion() >= 2)
notification.setAlertTitle(title);
notification.setAlertBody(text);
notification.setFireDate(new NSDate(date));
NSMutableDictionary<NSObject, NSObject> dict = new NSMutableDictionary<>();
dict.put("id",NSNumber.valueOf(ID));
notification.setUserInfo(dict);
UIApplication.getSharedApplication().scheduleLocalNotification(notification);
}
Edit:
After settting the notification it is present in the array returned by:
UIApplication.getSharedApplication.getScheduledLocalNotifications();

The problem was resolved after Adding:
notification.setTimeZone(NSTimeZone.getLocalTimeZone());
and setting the expire time of my test timer from 1 minute to 5 minutes
I'm not sure which is the actual solution, but the problem is gone, so I'm happy!
EDIT:
UILocalNotification notification = new UILocalNotification();
notification.setAlertTitle("title");
notification.setAlertBody("text");
NSMutableDictionary<NSObject, NSObject> dict = new NSMutableDictionary<>();
//add any customer stuff to your dictionary here
notification.setUserInfo(dict);
notification.setFireDate(new NSDate(date)); //date is some date in the future. Make sure it is in the correct TZ. If it does not work, try to make it at least 5 minutes in the future. I remember this helping my situation
notification.setTimeZone(NSTimeZone.getLocalTimeZone());
UIApplication.getSharedApplication().scheduleLocalNotification(notification);

Warn user before session time out in spring mvc

I have a web application implemented in Spring MVC, JSP having default timeout is 30 minutes.
I need to show alert in UI saying "Your session is going to end in 5 minutes. Please click OK to continue" if the session is going to expire in another 5 minutes.
How to achieve this in better way?
I found few answers here
Just interested to know if there is any other better way to do this.

try this out,below code works me fine
var cookieName = 'sessionMsg';
var message = 'Your session is Expires 5 min, click OK to continue';
function getCookie(name)
{
var name = name + "=";
var ca = document.cookie.split(';');
for(var i=0; i<ca.length; i++)
{
var c = ca[i].trim();
if (c.indexOf(name)==0) return c.substring(name.length,c.length);
}
return "";
}
function setSessionPrompt() {
var timeout = getCookie(cookieName) - new Date().getTime();
setTimeout(function(){
if (new Date().getTime() < getCookie(cookieName)) {
setSessionPrompt();
} else {
if(confirm(message)) {
// do your action here
}
}
}, timeout);
}
setSessionPrompt();

I want to log out my application after browser close in every browser?

I am calling this code by this window.onbeforeunload=HandleOnClose;
This is working fine in IE but not in other browsers. This code is specific for IE but this is not working in other browsers. How can we detect close event of browser in all the browser ?
function ConfirmClose()
{
if (isIE7Min) //To check for IE Version 7.0 and above
{
var n = window.event.screenX - window.screenLeft;
var b = n > document.documentElement.scrollWidth-20;
if ((b && window.event.clientY < 0) || window.event.altKey)
{
if (!self.closed)
{
refresh = true;
}
}
}
else //IE Version 6.0 and below
{
if (event.clientY < 0 && event.clientX < 0)
{
if (!self.closed)
{
refresh = true;
}
}
}
}
/*Function for onunload*/
function HandleOnClose()
{
ConfirmClose();
if (isIE7Min)
{
if ((window.event.clientX > 0 && window.event.clientY < 0) || window.event.altKey)
{
if (refresh == true)
{
window.open("/DealPricingJavaUAT/DealPricingJsp/Home/logout.jsf");
//Code That redirects to the Session Invalidation Page
}
}
}
else
{
if (event.clientY < 0 && event.clientX < 0 || window.event.altKey)
{
if (refresh == false)
{
window.open("/DealPricingJavaUAT/DealPricingJsp/Home/logout.jsf");
// Code That redirects to the Session Invalidation Page
}
}
}
}

I don't think it is possible to always log user out. If there is a crash on user's web browser, the client-side code will never get executed. Some web browsers shutdown itself very fast and don't wait to execute the client-side code.
You should find an alternative solution, like logging out on server side if user is not active for certain period of time.

Its not possible to detect when the user closes the browser.
If you are using java and using cookies to check if the user is logged-in, you can
do cookie.setMaxAge(-1).
This will make sure that cookies are deleted when browser closes.

Frontend Instance Hours - How can I decrease the usage?

I'm trying to use the free Google App Engine as a backend for Google Cloud Messages for my next Android app but when I have "finished" writing the server it already uses almost 100% of the free frontend instance hours. The question I have is if and how I can improve this?
The application is a servlet that is called every 15 minutes from a cron job, the servlet downloads and parses 3 RSS feeds and checks if anything has changed since the last call, saves the dates to the database (JDO and memcache, 3 calls) to know when the last running was and if any changes have happend since the last call sends that information out the the connected phones, right now 3 phones are connected, it's just one call to Googles servers. No data is returned from the servlet.
Here is the code
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException
{
boolean sendMessage = false;
String eventsFeedUrl = "http://rss.com";
String newsFeedUrl = "http://rss2.com";
String trafficFeedUrl = "http://rss3.com";
response.setContentType("text/plain");
Message.Builder messageBuilder = new Message.Builder();
String messageData = getFeedMessageData(eventsFeedUrl);
if (!messageData.equals(StringUtils.EMPTY))
{
messageBuilder.addData("event", messageData);
sendMessage = true;
}
messageData = getFeedMessageData(newsFeedUrl);
if (!messageData.equals(StringUtils.EMPTY))
{
messageBuilder.addData("news", messageData);
sendMessage = true;
}
messageData = getFeedMessageData(trafficFeedUrl);
if (!messageData.equals(StringUtils.EMPTY))
{
messageBuilder.addData("traffic", messageData);
sendMessage = true;
}
if (sendMessage)
{
sendMessage(messageBuilder.build(), response, debug);
}
}
private void sendMessage(Message message, HttpServletResponse response, boolean debug)
throws IOException
{
SendResult sendResult = GCMService.send(message, Device.list());
int deleteCount = 0;
for (MessageResult errorResult : sendResult.getErrorResults())
{
if (deleteCount < 200 && (errorResult.getErrorName().equals(Constants.ERROR_NOT_REGISTERED) || errorResult.getErrorName().equals(Constants.ERROR_INVALID_REGISTRATION)))
{
Device.delete(errorResult.getDeviceId());
deleteCount++;
}
}
}
private String getFeedMessageData(String feedUrl)
{
String messageData = StringUtils.EMPTY;
FeedHistory history = FeedHistory.getFeedHistoryItem(feedUrl);
Feed feedContent = RssParser.parse(feedUrl);
if (feedContent != null && feedContent.getFeedItems().size() > 0)
{
if (history == null)
{
history = new FeedHistory(feedUrl);
history.setLastDate(new Date(0));
history.save();
}
for (FeedItem item : feedContent.getFeedItems())
{
if (item.getDate().after(history.getLastDate()))
{
messageData += "|" + item.getCountyId();
}
}
if (!messageData.equals(StringUtils.EMPTY))
{
messageData = new SimpleDateFormat("yyyyMMddHHmmssZ").format(history.getLastDate()) + messageData;
}
history.setLastDate(feedContent.getFeedItem(0).getDate());
history.save();
}
return messageData;
}
The call Device.list() uses memcache so after one call it will be cached, the RSS parser is a simple parser that uses org.w3c.dom.NodeList and javax.xml.parsers.DocumentBuilder. According to the log file I use the same instance for days so there are no problems with instances starting up and taking resources. A normal call to the servlet looks like this in the log,
ms=1480 cpu_ms=653 api_cpu_ms=0 cpm_usd=0.019673
I have some ideas of what to try next, try to do the RSS download calls async to minimize the request time. Move the RSS parsing to a backgroud job. What else can be done? It feels like I have done some fundamental errors with my code here because how can a normal web app work if this servlet can't be called 100 times during 24 hours without consuming 100% of the frontend hours.
/Viktor

Your idle instances hang around for a little while before shutting themselves down. I don't know how long this is, but I'm guessing it's somewhere in the 5-15 minute range. If it is in fact 15 minutes, then your cron job hitting it every 15 minutes will keep it alive indefinitely, so you'll end up using 24 instance hours a day.
You can test this theory by setting your cron job to run every 30 minutes, and see if it halves your instance hour usage.

Copy and past URL in JSP is giving white page

I am new to this forum. I have a doubt about JSP/servlet in my application
I have developed an application in which user may search some data based on some criteria and he will get data from database(through Hibernate to servlet and to JSP). When some data is displayed on screen based on search he/she may try to copy the URL and forward to anyone or If he try to open in different browser it is showing an empty page.
eg: if i try to paste the link given bellow it is showing blank page
example link
but i need to display the data how this can be achieved.
Edited: After clicking on job search in menu bar as mentioned in comments the page will redirect to a servlet
if(action.equals("searchjob")){
String requireskills=request.getParameter("txt_requireSkills");
String location=request.getParameter("txt_locationName");
session.setAttribute("location",location);
String minexp1=request.getParameter("dd_minimum");
String maxexp1=request.getParameter("dd_maximum");
jobsearchDAO = new JobSearchDAOImpl();
List<JobPostInfo> data=jobsearchDAO.jobsearchlist(requireskills,location,minexp1,maxexp1);
if(data!=null && data.size()!=0){
//save data
if(!(session.getAttribute("LoginObject")==null)){
JobSeeker jobSeeker=(JobSeeker)session.getAttribute("LoginObject");
JobSearchCriteria jobsearchcriteria= new JobSearchCriteria();
jobsearchDAO=new JobSearchDAOImpl();
jobsearchcriteria.setKeyWords(requireskills);
jobsearchcriteria.setLocation(location);
JobSeeker jobseeker=(JobSeeker)session.getAttribute("jobseeker");
//
// jobsearchcriteria.setJobSeeker(jobseeker.getJobSeekerSn());
jobsearchcriteria.setJscTs(new Date());
int value=jobsearchDAO.savesearch(jobsearchcriteria);
System.out.println("savesearch value------>"+value);
}
session.setAttribute("jobsearchlist", data);
// session.setAttribute("success","Search Criteria is saved to database.");
response.sendRedirect("jobsearchresult.jsp");
}else
{
session.setAttribute("error","No Records found");
response.sendRedirect("jobsearch.jsp");
}
}
This is the code in DAOIMPL
public List<JobPostInfo> jobsearchlist(String requireskills,String location,String minexp1,String maxexp1) throws Exception{
long minexp;
long maxexp;
try{
session =getSession();
//Criteria Query
Criteria query=session.createCriteria(JobPostInfo.class,"jpost");
// if(minexp1.equals("0") && (maxexp1.equals("") || maxexp1==null)){
if((minexp1.equals("-1") || minexp1=="-1") && maxexp1==null){
}
else if(minexp1.equals("0")){
minexp=Long.parseLong(minexp1);
long min=1;
query.add(Restrictions.lt("jpost.experienceMin",min));
}else if(!(minexp1.equals("") || minexp1==null) && maxexp1.equals("-1")) {
minexp=Long.parseLong(minexp1);
query.add(Restrictions.ge("jpost.experienceMin",minexp));
}else if(!(minexp1==null && maxexp1==null)){
minexp=Long.parseLong(minexp1);
maxexp=Long.parseLong(maxexp1);
query.add(Restrictions.and(Restrictions.ge("jpost.experienceMin",minexp),Restrictions.le("jpost.experienceMax",maxexp)));
}
//For Location
if(!(location==null|| location.equals(""))){
query.createAlias("jpost.location","location");
query.add(Restrictions.like("location.locationName",location).ignoreCase());
}
//For Keyword
if(!(requireskills==null || requireskills.equals(""))){
query.add(Restrictions.like("jpost.requiredSkills","%"+requireskills+"%").ignoreCase());
}//requireskills
List<JobPostInfo> list = query.setResultTransformer(Criteria.DISTINCT_ROOT_ENTITY).list();
if(list.size()==0){
return null;
}else{
return list;
}
}catch(HibernateException e){
e.printStackTrace();
}finally {
close(session);
}
return null;
}

I solved my problem. It's a very basic mistake and I hope this will help others:
response.sendRedirect("jobsearchresult.jsp") is replaced by request.getRequestDispatcher("studentinformation.jsp").forward(request, response)
or include-method. The second thing is, the session is created and initialized with the servlet. When I copy the link in a different browser, a certain block of the servlet will be executed. Example:
action.equals("searchjob")
So at the time the session is not available yet, I initialize it in every block like separating declaration and initialization.