Is it possible to retrieve the time when we start the application for the first time
Save this time at first startApp in RMS and then check it. There is no system property if you mean this.
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I'm just starting to use RMS and I noticed that the emulator only keeps the data that was "supposedly" saved , if the application was executed via OTA.
If I run the application via Regular Execution, the data is only there while I'm using the application. Once I close it, all the data is gone.
Is that normal?? What exactly represents OTA?? Why are there some features that are only perceptible when the app is executed via OTA??
Thanks in advance.
I am using SailsJS for a web application which basically lets the user download and process any video from the internet(say youtube). The user enters a link to the video and my sails app downloads the video if available and then starts processing the downloaded video using a shell script(Come OpenCV processing to find different frames).
This process takes a very long time to complete, and the user can navigate away from the page and do whatever he wants. Now, to check on the progress by visiting this page later I need to be able to connect with the child process that was created earlier for this video file.
I have come up with two possible solutions:
1) Using gearman to implement a job server and connect to it every time the user navigates to the page and start getting the callback events and show the progress based on them. This is the first time I'll be using gearman.
2) Somehow storing the processID of the child process in the session/db and then using it to find the process using ps-node.
Which of these is the better approach(if you think they'll work fine)? Or is there any other solution I don't know about? Any pointers in the right direction will be appreciated.
Let's start with the second option. Don't use it. Simply because this way your site users will have sort of more control over the number of processes running on your server then you will.
Number one is way better, but using a separate job server seems like a bit of overkill to me (I have to admit though that I'm not fully informed the scale of your plans).
Bottom line, I would use a message/job queue (kue seems like a perfect fit to me) and store the progress in DB or (preferably) Redis (or whatever cache you are using).
Team,
i'm developing an iOS application.
My requirement is to query for specific news service(REST API) in regular time interval.I wanted query the service twice for a day and update my sqllite db, even the applciation is in background state. My UI will be updated with data fetched from sqllite db, while the application is in foreground.
My question are,
Is it possible to run NSTimer in background continuously? if yes, is
there any maximum time limit for timer to run in background (say 10
mins or 60 mins)?
Is it possible to send request to download a file using
NSUrlConnection and save the file to documents directory, when the
application is in background ?
Your suggestions will be much helpful for my project design.
Thanks in advance.
What you are aiming for cannot be achieved on iOS:
Arbitrary apps cannot run in the background for an arbitrary amount of time.
You can try to mitigate some of this by using local notifications instead of NSTimer to schedule your updating. This will, however, only buy you a very limited amount of time to do your networking.
The question you should ask yourself at this point probably is:
If you are only updating twice a day, how bad can it be to initiate the download when your app becomes active?
Answering my own question, so that it will be helpful for others.
Ques 1: Is it possible to run NSTimer in background continuously?
Ans: Nstimer will not run while the application in background state. So there is no point of maximum allowed timer value in background. If the application enters into background while there is an ongoing process, [UIApplication beginBackgroundTaskWithExpirationHandler:] can be used to complete the ongoing process. The maximum time allowed by the OS with this handler is 10mins.
Ques 2: Is it possible to send request to download a file using NSUrlConnection and save the file to documents directory, when the application is in background ?
Ans:
Below given information is from Apple documentation. Detail info is found here
In iOS, only specific app types are allowed to run in the background:
Apps that play audible content to the user while in the background,such as a music player app
Apps that keep users informed of their location at all times, such as a navigation app
Apps that supportVoice over Internet Protocol (VoIP)
Newsstand apps that need to download and process new content
Apps that receive regular updates from external accessories
Info about running background process using VOiP type application can be found here
I need guidance in creating a Multi Threaded Windows Service.
The Service needs to read records from a database Table and saves it to
another service(ServiceB). The table might contain thousands of records which
the service needs to read 100 at a time and do something and saves
it to ServiceB and again take another 100 records from the table
and process it and saves it to Service B. And the process should continue
like that till it finishes all the records.
At the same time this service will get the results from ServiceB.
and update the table with the result from ServiceB.
So this service needs to do two thing simultaneously.
Any idea what is the best method to do it or any help is appreciated.
I think you need to check about Thread. Microsoft has a good Tutorial for Thread.
i have created an application which stores lots of data around 100 mb in rms and application process on this data
now when i am un-installing application from Nokia e-72 some times it remove application many time it cant remove application
when it cant remove at that time i have to go in control panel --> installed application --> uninstall application.
even i can't able to un-install from there.
some times it hang phone at time of un-installing application.
if i have less data in RMS then that app can removed easily.
what could be problem and how i can solve this problem??
Basically RMS designed for small amount of data. If you want to store huge amount of data means you can store into card or store into database through GPRS. See this existing discussion same in this forum.
Better option is choose file system(JSR-75). But signing required for accessing the file system. It will be cost.
As a temporary solution i am un-installing application in following way
first removing all RMS Data from application it self
now when application is without any rms data i can remove it like
option--> remove