There’s already a background API that can wake up your app when it changes locations, either continuously via GPS (very expensive battery wise) or when you switch between cell towers (which means you’ll get notified much less often).
This is actually a much different problem to solve. There are only two possible solutions that I could see.
1. Require the user to keep you application open while periodically checking for location. Then you could fire the event when they were within range.
2. Read up on background processing and subscribe to the location based background processing protocol. Then have the device periodically send the location of the user to a server. Once the server detects that the user is in range, send them a push notification to open the app.
I know that Solution 2 seems pretty complex, however it is most likely your best bet as Apple has this process fairly locked down.
Great Tutorial!!! how can i launch my application automatically with out the help of Alert view that launches when the notification fires locally…
And one more question How can i play a continuos sound in the background when the notification arrives….
I have a serious issue in handling local notification, I scheduled 3 local notifications each 1 minute duration, and I locked my device for 5 minutes, I received all three local notifications in locked state, but I am able to handle only last local notification i.e. I can get control inside didReceiveLocalNotification event but for other two, popup generated but it did not go to didReceiveLocalNotification.
Nice tutorial!
I would like to do one thing in my app: setting the app’s badge to zero automatically every midnight (without opening the app). Is this possible?
Thanks you very much for sharing this tutorial about this Iphone application development. fresher can learn understand to see this video and this content.
No, I’m sure inside of Apple’s UILocalNotification.m’s dealloc method, they release their userInfo dict. You are never responsible for releasing properties of Apple’s classes (unless YOU retain them).
Also the dictionary that we pass to userInfo (infoDict) is an auto-release object since we initialized it with [NSDictionary dictionaryWithObject:], so we don’t need to release it either.
Also I’ve downloaded the project from this page and ran it in a XCode 3.2.3 with SDK4, no errors but to me:
[[UIApplication sharedApplication] scheduleLocalNotification:localNotif];
does not seems to add any notification… not sure why.
Querying UIApplication states that it can respond to that message.
It would intuitive for me for the iPhone to increase the current app’s badge number by 1 and not, like it’s actually doing it, setting it to 1.
So in this example how can we actually increase it by 1 everytime a LocalNotification fires up?
We can’t do localNotif.applicationIconBadgeNumber = 1 + [[UIApplication sharedApplication] applicationIconBadgeCount]; cause if, for instance, if I start from 0 and schedule 2 notification they will both encapsulate 1 and so the badge icon will not show 2 after they’re both fired.
Sure, you can handle this however you want. I was just providing a simple example. You can modify the badge count however you like to fit your application’s needs.
I do have a problem with this app i’ve create the interface added all the code but when i try to save any notification it just doesn’t anything. can someone help me pls?? i’m using xcode_3.2.3_and_ios_sdk_4.0.2.
Great tutorial!Thanks!I love it and I love you very very very much!
But I have a question.How can I remove(delete) a local notification.
May you tell me the code.Or add a action of “delete a saved notification” in your tutorial?
I did everything right, and checked with the source code, but the table doesn’t actually show the notification! They occur, but not shown in the cell. How can I add this feature (like in your screenshot)?
Thank very much for this tutorial .
I have a question : how should i handle for example an event ( alarm ) to be lunched evert Monday and every Tuesday . I know how to handle a repeat Local Notification , but what i’m wondering if there is a possibility to handle with only one Local Notifications different types of repeating mode .
If it’s not possible with just only one , i have to make create from 1 to 6 types of local notifications just for one reminder ( alarm ) .
Very very good tutorial, but unfortunately the program is unable to build due to the first file, “NotifierViewController.h”.
The error given was “Expected identifier or ‘(‘ before ‘&’ token”
I’m a newbie here so I guess i’m not familiar with what I’ve went wrong. I’ve checked/copy past the whole code a few times and i still can’t manage to find out my error. Help would be greatly appreciated!!
Hi your tutorial helped me a lot…But i need to know whether we can Auto send SMS when the local notification fires…..Please give me your suggestions..I want to send SMS automatically at particular date and time…
Brilliant tutorial brandontreb…..thanks a lot!!! I have tested out the code and it work beautifully.
I do have a question for you though. Is it possible to push a local notification any time an entry is added to a log file? Could you point me to some useful websites?
[...] w którym wytłumaczona jest cała procedura przygotowania aplikacji z tego typu wiadomościami: iPhone Programming Tutorial – Local Notifications. Zakres tematyczny: Bez kategorii Dodaj komentarz Komentarze (0) Trackbacks (0) ( subskrybuj [...]
By on July 30, 2010 at 12:58 am
[...] Brandon Treb has written a great step-by-step tutorial on exactly how to do just that, which you can find here: iPhone Programming Tutorial Notifications [...]
43 Comments
Okay great, throw an event at a certain time. Can I throw an event when my device is at a certain place??
Why not try throwing an event at a certain time which would check for certain place and then reacted?
There’s already a background API that can wake up your app when it changes locations, either continuously via GPS (very expensive battery wise) or when you switch between cell towers (which means you’ll get notified much less often).
This is actually a much different problem to solve. There are only two possible solutions that I could see.
1. Require the user to keep you application open while periodically checking for location. Then you could fire the event when they were within range.
2. Read up on background processing and subscribe to the location based background processing protocol. Then have the device periodically send the location of the user to a server. Once the server detects that the user is in range, send them a push notification to open the app.
I know that Solution 2 seems pretty complex, however it is most likely your best bet as Apple has this process fairly locked down.
Awesome tutorial!
Awesome Tut!
Great tutorial. Love it.
Great Tutorial!!! how can i launch my application automatically with out the help of Alert view that launches when the notification fires locally…
And one more question How can i play a continuos sound in the background when the notification arrives….
@umer
1. “how can i launch my application automatically with out the help of Alert view that launches when the notification fires locally…”
You Can’t. The only options for launch are push, local, or custom url and the user opening from a link. There is no ‘automatic’ way to open your app
2. “And one more question How can i play a continuos sound in the background when the notification arrives….”
You can’t. The audio that plays when a notification arrives is limited to 30 seconds.
It Comes up with (error:’UILocalNotification’ undeclared (first use in function)) Why?
Are you building your project for 4.0?
Great tut!
It would be highly beneficial for people like me.
Could you also provide a tutorial for push notification
Maybe in the future. You can purchase my book which has a full chapter on push notifications…
Oh… I’ve only got SDK 3.1.3
i have a Doubt
Is it Only Working In IOS4?
I heard Multi threading can only done in IOS4
regards
safil sunny
@safil
1. Local notifications are only supported by iOS4
2. You are thinking of multitasking, multithreading has been supported on every device since release
great tut, love it
, it really is helping me out with my iphone programming,
~newbie here :p~
Hi, Great tutorial. But how would i change the timezone on the table view detailtextlabel?
I have a serious issue in handling local notification, I scheduled 3 local notifications each 1 minute duration, and I locked my device for 5 minutes, I received all three local notifications in locked state, but I am able to handle only last local notification i.e. I can get control inside didReceiveLocalNotification event but for other two, popup generated but it did not go to didReceiveLocalNotification.
Please Help Me, I am stuck in it.
Thanks In Advance.
Great Tutorial!!!
How can i set the local push to repeat every week?
Hey great tutorial, I wondered the same thing, can this be made repeat weekly? Thx.
Great question, I’m not 100% sure. I know you can pass an NSCalendar for the repeate. I will grok the documentation a bit more and get back to that.
Nice tutorial!
I would like to do one thing in my app: setting the app’s badge to zero automatically every midnight (without opening the app). Is this possible?
Thank you.
No, the app must run to set the badge count to 0.
Thanks you very much for sharing this tutorial about this Iphone application development. fresher can learn understand to see this video and this content.
From UILocalNotification.h:
@property(nonatomic,copy) NSDictionary *userInfo;
so after we set localNotif.userInfo = infoDict; in – (IBAction) scheduleAlarm:(id) sender shouldn’t we release userInfo?
No, I’m sure inside of Apple’s UILocalNotification.m’s dealloc method, they release their userInfo dict. You are never responsible for releasing properties of Apple’s classes (unless YOU retain them).
Also the dictionary that we pass to userInfo (infoDict) is an auto-release object since we initialized it with [NSDictionary dictionaryWithObject:], so we don’t need to release it either.
Also I’ve downloaded the project from this page and ran it in a XCode 3.2.3 with SDK4, no errors but to me:
[[UIApplication sharedApplication] scheduleLocalNotification:localNotif];
does not seems to add any notification… not sure why.
Querying UIApplication states that it can respond to that message.
Disregard this, sorry i was accepting the default datetime… in the past.
Also, to nag a bit more
I don’t understand this:
localNotif.applicationIconBadgeNumber = 1;
It would intuitive for me for the iPhone to increase the current app’s badge number by 1 and not, like it’s actually doing it, setting it to 1.
So in this example how can we actually increase it by 1 everytime a LocalNotification fires up?
We can’t do localNotif.applicationIconBadgeNumber = 1 + [[UIApplication sharedApplication] applicationIconBadgeCount]; cause if, for instance, if I start from 0 and schedule 2 notification they will both encapsulate 1 and so the badge icon will not show 2 after they’re both fired.
Any ideas?
Sure, you can handle this however you want. I was just providing a simple example. You can modify the badge count however you like to fit your application’s needs.
how do I get to the beginning of the iPhone tutorials?
I do have a problem with this app i’ve create the interface added all the code but when i try to save any notification it just doesn’t anything. can someone help me pls?? i’m using xcode_3.2.3_and_ios_sdk_4.0.2.
Great tutorial!Thanks!I love it and I love you very very very much!
But I have a question.How can I remove(delete) a local notification.
May you tell me the code.Or add a action of “delete a saved notification” in your tutorial?
I did everything right, and checked with the source code, but the table doesn’t actually show the notification! They occur, but not shown in the cell. How can I add this feature (like in your screenshot)?
Hello ,
Thank very much for this tutorial .
I have a question : how should i handle for example an event ( alarm ) to be lunched evert Monday and every Tuesday . I know how to handle a repeat Local Notification , but what i’m wondering if there is a possibility to handle with only one Local Notifications different types of repeating mode .
If it’s not possible with just only one , i have to make create from 1 to 6 types of local notifications just for one reminder ( alarm ) .
Thanks in advance
Hello,
Very very good tutorial, but unfortunately the program is unable to build due to the first file, “NotifierViewController.h”.
The error given was “Expected identifier or ‘(‘ before ‘&’ token”
I’m a newbie here so I guess i’m not familiar with what I’ve went wrong. I’ve checked/copy past the whole code a few times and i still can’t manage to find out my error. Help would be greatly appreciated!!
Hi your tutorial helped me a lot…But i need to know whether we can Auto send SMS when the local notification fires…..Please give me your suggestions..I want to send SMS automatically at particular date and time…
Great tut!!! Can i to play some sound from my app? How i can did it?
Brilliant tutorial brandontreb…..thanks a lot!!! I have tested out the code and it work beautifully.
I do have a question for you though. Is it possible to push a local notification any time an entry is added to a log file? Could you point me to some useful websites?
Thanks a mill,
samba
Thank you for the great tutorial.
May I ask, this line: NSArray *notificationArray = [[UIApplication sharedApplication] scheduledLocalNotifications]; is not causing a memory leak?
Ok, replying to myself here. It’s not a memory leak, as you don’t own the object. (right? right.)
Hi,
I REALLY need to get this working… I downloaded the source and built and ran it but when I hit save it doesn’t save anything and there are no popups.
what is wrong im using iphone 4.2 sdk
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[...] Original post on iCodeBlog [...]
[...] w którym wytłumaczona jest cała procedura przygotowania aplikacji z tego typu wiadomościami: iPhone Programming Tutorial – Local Notifications. Zakres tematyczny: Bez kategorii Dodaj komentarz Komentarze (0) Trackbacks (0) ( subskrybuj [...]
[...] Brandon Treb has written a great step-by-step tutorial on exactly how to do just that, which you can find here: iPhone Programming Tutorial Notifications [...]