Well the title is self explained. I want to create an App that can manage programmed local notifications when App is in background mode. Notifications works smoothly but I want to fire a custom method when the alert is fired.
Is it possible?
Thank you.
Yes it can be done. You can do somethng like this:
- (void)applicationDidEnterBackground:(UIApplication *)application {
[NSTimer scheduledTimerWithTimeInterval:17.0 target:self selector:#selector(makeNotificationRequest:) userInfo:nil repeats:YES];
}
-(void)makeNotificationRequest:(NSTimer *)timer
{
CLLocation *location = [[AppHelper appDelegate] mLatestLocation];
NSMutableDictionary *paramDic = [[NSMutableDictionary alloc] init];
#ifdef _DEBUG
[paramDic setValue:[NSString stringWithFormat:#"77.586"] forKey:#"Lat"];
[paramDic setValue:[NSString stringWithFormat:#"12.994"] forKey:#"long"];
#else
[paramDic setValue:[NSString stringWithFormat:#"%f",location.coordinate.latitude] forKey:#"Lat"];
[paramDic setValue:[NSString stringWithFormat:#"%f",location.coordinate.longitude] forKey:#"long"];
#endif
WNetwork *mNetwork = [[WNetwork alloc] init];
[mNetwork makeRequsetWithURL:URL_Showbeeps type:JBJsonParser paramDictionary:paramDic delegate:self];
[mNetwork autorelease];
NSLog(#"URL HIT%#",paramDic);
[paramDic autorelease];
}
And to customize your action on alert you can use this:
- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification {
UIApplicationState state = [application applicationState];
if (state == UIApplicationStateActive) {
;
}
}
If the app were in the foreground then you would want the - (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification method of UIApplicationDelegate, however the documentation suggests that this will not be called when the app is in the background.
You can get a list of local notifications by calling scheduledLocalNotifications on your UIApplication instance - you can then poll these for their times and schedule a function to call at that time in your background mode. This won't necessarily 100% match up with when the Local Notification fires though, but I think it's as close as the App Store guidelines will let you get.
You can also present your own Local Notifications when you are in background mode by calling the presentLocalNotificationNow: method:
https://developer.apple.com/library/IOS/#documentation/UIKit/Reference/UIApplication_Class/Reference/Reference.html#//apple_ref/occ/instm/UIApplication/presentLocalNotificationNow:
so you could work around this by just presenting your own notifications and not scheduling them for the OS to deliver.
If you are trying to access Local Notifications from other applications then I don't think this is allowed.
No ..no custom methods are defined while app is running in background..Once an notification is fired we can;t change the alert message also. But nice when we show the alert message then by clicking the yes button to the alert take you to the one method called app is Running in Background which is in AppDelegate.m file
Related
I have this code to schedule a UILocalNotification:
UILocalNotification* localNotification = [[UILocalNotification alloc] init];
localNotification.userInfo = #{PLANNED_EVENT_ID : #"some id"};
localNotification.fireDate = someStartDate;
localNotification.alertBody = #"Some text";
localNotification.timeZone = [NSTimeZone defaultTimeZone];
localNotification.soundName = UILocalNotificationDefaultSoundName;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
This method works as expected when I set the above when application is in foreground, but if I use this code when application is in background (pressed home button), then it is not fired at all?
Why on earth will this not work? How can I get the result I need? I need to able to use this code when application is in background.
Thanks!
To be more clear, in my AppDelegate i have the method
- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)
When I get the first notification inside this method (which works, it is scheduled in a view controller), I schedule another notification in the same way (1 min from now). So I tried to have the application in foreground, then it worked, but when I had it in background, it didn't.
Tested on Simulator though.
The method
- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)
is called when the app opens after a local notification has been shown to the user and the user has opened the app from the notification. If the user doesn't open the app from the notification then this method will not be called. So your next notification is never actually added.
I would like to know, if it is possible to somehow "wake up" a task that is in the background, to quickly check something on the network.. I think that this could be done with UILocalNotification, however, no matter what I tried, I could not get the didReceiveLocalNotification to do ANYTHING when the app is in the background.. After starting up, I immediately close the app by pressing the Home button (there is a 10 second delay for local notification to fire). This code works PERFECTLY when the app is in the foreground, and just kind of sitting there...
In app delegate header file:
UILocalNotification *localNotif;
For testing, I set up local notification to fire quickly in the appDelegate startup.
localNotif = [[UILocalNotification alloc] init];
localNotif.fireDate = [NSDate dateWithTimeIntervalSinceNow:10]; // the date you want the notification to fire.
localNotif.timeZone = [NSTimeZone defaultTimeZone];
[[UIApplication sharedApplication] scheduleLocalNotification:localNotif];
NSLog(#"setup the timer for 10 seconds");
- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification {
UIApplicationState state = [application applicationState];
NSLog(#"getting kicked");
if (state == UIApplicationStateInactive) {
// Application was in the background when notification was delivered.
NSLog(#"INACTIVE..");
} else {
NSLog(#"ACTIVE..");
}
}
The user has a couple of choices: #1) Do they want to see a notification for your app. #2) If notifications are enabled for your app, do they want to click on your notification to launch your app. If they do accept notifications and open your notification while your app is in the background, application:didReceiveLocalNotification is called. To be clear, the user has to accept the notification (such as sliding the slider underneath the notification)... otherwise NOTHING is called.
- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification {
NSLog(#"%#", notification);
}
If your app has been terminated application:didFinishLaunchingWithOptions: is called -
- (BOOL)application:(UIApplication *)
application didFinishLaunchingWithOptions:
(NSDictionary *)launchOptions {
UILocalNotification *theNotification =
[launchOptions
objectForKey:UIApplicationLaunchOptionsLocalNotificationKey];
NSLog(#"%#", theNotification);
return YES;
}
I am making an application in which i want features like as when i run my app on device then it will closed immediately without showing any screen.But Application works in background. When user click on icon of application then it will not show any screen but work in background. After 2 minutes gap it will show a alert message. How do that?
I have used code for this given below:-
-(void)applicationDidFinishLaunching:(UIApplication *)application{
[application cancelAllLocalNotifications];
[self applicationWillTerminate:application];}-(void)applicationWillTerminate:(UIApplication *)application{
/*
Called when the application is about to terminate.
Save data if appropriate.
See also applicationDidEnterBackground:.
*/
UILocalNotification* ln = [[UILocalNotification alloc] init];
ln.fireDate =[NSDate dateWithTimeIntervalSinceNow:30];
ln.alertBody = [NSString stringWithFormat:#"Now app is working in Background."];
ln.soundName = UILocalNotificationDefaultSoundName;
[[UIApplication sharedApplication] scheduleLocalNotification:ln];
ln.hasAction=NO;
[ln release];
exit(0);}
But this is not working as i want. So what is bug in this code? How do that?
Thanks in advance...
You can't put your app away by manually calling [self applicationWillTerminate:application];. It's a delegate method that gets called when your application is about to be terminated, not a method to terminate the app.
You could try to schedule a local notification in didFinishLaunchingWithOptions: and call exit(0); afterwards. Some kind of splah screen (or black screen) will probably be shown for a moment.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
[application cancelAllLocalNotifications];
UILocalNotification* ln = [[UILocalNotification alloc] init];
ln.fireDate =[NSDate dateWithTimeIntervalSinceNow:30];
ln.alertBody = [NSString stringWithFormat:#"Now app is working in Background."];
ln.soundName = UILocalNotificationDefaultSoundName;
[[UIApplication sharedApplication] scheduleLocalNotification:ln];
ln.hasAction=NO;
[ln release];
exit(0); //this line kills the app (and gets your app rejected)
return NO; //this line is just to make compiler happy
}
Please note that this will most definetly not be approved for App Store.
How can I clear the badge which appears on application icon when I receive Push Notification? I want to clear it once user has either tapped on "View" of Push notification alert or has tapped on the app icon.
I suspect you are talking about the SpringBoard's badge:
[[UIApplication sharedApplication] setApplicationIconBadgeNumber:0]
Badge count set Zero
[[UIApplication sharedApplication] setApplicationIconBadgeNumber:0]
Cancel all local notifications with this code:
[[UIApplication sharedApplication] cancelAllLocalNotifications];
Cancel one local notification with this line of code:
[[UIApplication sharedApplication] cancelLocalNotification:theNotification];
here theNotification is a UILocalNotification object, so in order to cancel a specific notification, you need to hold on to it's UILocalNotification.
Check this.
For Mac OS X Lion, it's:
[NSApp dockTile].badgeLabel = #"";
(Lion supports badge-type push notifications.)
From Apple's documentation, set the application.applicationIconBadgeNumber to the number you want displayed on the badge. If you set it to 0, it will be cleared.
- (BOOL)application:(UIApplication *)app didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
UILocalNotification *localNotif = [launchOptions objectForKey:UIApplicationLaunchOptionsLocalNotificationKey];
if (localNotif) {
NSString *itemName = [localNotif.userInfo objectForKey:ToDoItemKey];
[viewController displayItem:itemName]; // custom method
application.applicationIconBadgeNumber = localNotif.applicationIconBadgeNumber-1;
}
[window addSubview:viewController.view];
[window makeKeyAndVisible];
return YES;
}
Reference - Scroll down to the Handling Local and Remote Notifications section just above listing 2.4
I have implemented Apple Push Notification service using Urban Airship and successfully received the notification in my application. If i receive the notification the alert view comes, If i click the view button in alert view, it goes to start the application. Generally it happens in APNS. But my client wants, If any updates happened in the RSS feed and alert view comes, If we click the view in alert view, it should go to the particular feed in the application, doesn't start the application. SO is it possible to do that?. Is any possible to write the events for the particular alert view buttons in my application.
Here my sample code is,
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
[[UIApplication sharedApplication] registerForRemoteNotificationTypes: UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert];
[window addSubview:viewcontrollers.view];
[window makeKeyAndVisible];
NSLog(#"remote notification2: %#",[launchOptions description]);
return YES;
}
In this method didFinishLaunchingWithOptions, i cant get the dictionary values and it always get the Null Value. Is any possible to get the dictionary value in this method(Notification comes).
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo{
NSString *message = [userInfo descriptionWithLocale:nil indent: 1];
NSLog(#"The message string is %#",message);
UIAlertView *alert = [[UIAlertView alloc] initWithTitle: #"Remote Notification" message: message delegate: nil cancelButtonTitle: #"ok" otherButtonTitles: nil];
[alert show];
[alert release];
}
In this method, i could get the dictionary value. But this method calls only,if any update happens while running in the application.
Please guide me!
Thanks
It is indeed possible to do that. In your application:didReceiveRemoteNotification method you'll be passed an NSDictionary with all of the push notification's data. What you'll want to do is send some ID or URL in the payload to Urban Airship. Something like:
{
"aps": {
"alert": "New RSS entry"
},
"entry_id": "XYZ123"
}
And then you can write code to go and fetch the proper feed entry in your application.
When the application isn't running or has been terminated by the system and the app is launched via the notification:
In this case you have to get the notification dictionary (which is itself a value of the launchOptions):
http://developer.apple.com/iphone/library/documentation/UIKit/Reference/UIApplicationDelegate_Protocol/Reference/Reference.html#//apple_ref/doc/uid/TP40006786-CH3-SW18
I imagine the code would be something like this:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
NSDictionary *remoteNotification = (NSDictionary *) [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
if (remoteNotification != nil) {
NSString *message = [remoteNotification descriptionWithLocale:nil indent: 1];
}
}