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
Related
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;
}
Once i click a notification, all the notifications are cleared.In ios, is there any option to clear a single notification after tapping on it? i have received 4 notifications. now i need the clicked notification alone to get cleared and retain the other ones.Can anyone help me on this?
- (void) clearNotifications {
[[UIApplication sharedApplication] setApplicationIconBadgeNumber: 0];
[[UIApplication sharedApplication] cancelAllLocalNotifications];
}
- (void)application:(UIApplication*)application didReceiveRemoteNotification:(NSDictionary*)userInfo
{
NSLog(#"Received notification: %#", userInfo);
[self clearNotifications];
}
-(void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification
{
// when you tap on any of notification this delegate method will call...
[[UIApplication sharedApplication] cancelLocalNotification:notification];
}
Is there a way to programmatically remove/dismiss UILocalNotification from Notification Tray.
I am able to cancel the notification which removes the notifications from
[[UIApplication sharedApplication] scheduledLocalNotifications]
Here is what i need to do
I need to dismiss the UILocalNotification from NotificationTray after the action has been performed(ie after the user taps the notification)
EDIT:
I can remove the notifications from the NSNotificationCenter. I want to remove specific notifications from the Notification Tray .Like the user presses the clear button to clear all the notifications belonging to a particular application.
You can cancel all notifications using:
[[UIApplication sharedApplication] cancelAllLocalNotifications];
If you want to remove a particular notification, you can use userinfo of notification object, when you create a local notification add a unique ID to that. Later you can use that ID for removing local notification.
For that you can use the following code:
NSString *notificationId = #"id_to_cancel";
UILocalNotification *notification = nil;
for(UILocalNotification *notify in [[UIApplication sharedApplication] scheduledLocalNotifications])
{
if([[notify.userInfo objectForKey:#"ID"] isEqualToString:notificationId])
{
notification = notify;
break;
}
}
[[UIApplication sharedApplication] cancelLocalNotification:notification];
I believe I had a similar issue. When the app entered the foreground I attempted to clear past notifications to remove any old notifications from the notifications tray.
I did something like this to grab old notifications and remove them:
NSArray *activeNotifications = [[UIApplication sharedApplication] scheduledLocalNotifications];
NSArray *pastNotifications = [activeNotifications filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:#"firDate < %#", [NSDate date]]];
for (UILocalNotification *notification in pastNotifications) {
[[UIApplication sharedApplication] cancelLocalNotification:notification];
}
However, it seems that scheduledLocalNotifications does not include locations whose fire date is already past even though they still appear in notification center.
Calling cancelAllLocalNotifications does seem to remove past notifications as well. So we can grab all the current notifications, cancel everything, and then add the ones we're still interested in back.
// Grab all the current notifications
NSArray *activeNotifications = [[UIApplication sharedApplication] scheduledLocalNotifications];
// Clear all notifications to remove old notifications
[[UIApplication sharedApplication] cancelAllLocalNotifications];
// Add back the still relevant notifications
for (UILocalNotification *notification in activeNotifications) {
[[UIApplication sharedApplication] scheduleLocalNotification:notification];
}
Additionally we can do some filtering of the notifications before adding them back if some are no longer needed, and we can grab the active notifications when the app becomes active, store them in an instance variable, and only add them back when the app moves to the background
[UIApplication sharedApplication].applicationIconBadgeNumber = 0;
will do some trick too
but if you didnot use applicationIconBadgeNumber, it will not work, so trick is set
applicationIconBadgeNumber first :)
[[UIApplication sharedApplication] setApplicationIconBadgeNumber:1];
If the Application is not running, you will be receiving the Local Notification object in the
-applicationDidFinishLaunchingWithOptions:
like:
UILocalNotification *localNotif = [launchOptions objectForKey: UIApplicationLaunchOptionsLocalNotificationKey];
or else you can get it in
(void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification
Now you can remove it from the Notification Center using
[[UIApplication sharedApplication]
cancelLocalNotification:notificationToCancel];
// deletes a pushnotification with userInfo[id] = id
-(void)deleteLocalPushNotificationWithId:(NSString*)id{
for(UILocalNotification *notification in [[UIApplication sharedApplication] scheduledLocalNotifications]){
if([[notification.userInfo objectForKey:#"id"] isEqualToString:id]){
[[UIApplication sharedApplication] cancelLocalNotification:notification];
}
}
}
// deletes all fired pushnotifications
-(void)clearLocalPushNotifications{
NSArray *activeNotifications = [[UIApplication sharedApplication] scheduledLocalNotifications];
// Clear all notifications to remove old notifications
[[UIApplication sharedApplication] cancelAllLocalNotifications];
// Add back the still relevant notifications
for (UILocalNotification *notification in activeNotifications) {
[[UIApplication sharedApplication] scheduleLocalNotification:notification];
}
}
I was fiddling with some code and I was wondering why local notifications are stored in the notification center if the application is in the foreground. It's probably because Apple doesn't know what you are doing with them and honestly doesn't care; so they do their job.
As far as the question is concerned, I do the following:
- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification
{
if (application.applicationState == UIApplicationStateActive)
{
NSLog(#"active");
// display some foreground notification;
[application cancelLocalNotification:notification];
}
else
{
NSLog(#"inactive");
}
}
So I just read this thread about how to close/remove all the already fired local notifications from the Notification center, if the user opens the app by clicking the app icon, not the notification. But after all of this, the other scheduled local notification should fire in the future.
Here is my easy solution for this, which should be triggered on application did becomeActive:
UIApplication* application = [UIApplication sharedApplication];
NSArray* scheduledNotifications = [NSArray arrayWithArray:application.scheduledLocalNotifications];
application.scheduledLocalNotifications = scheduledNotifications;
I ve tried the [[UIApplication sharedApplication] cancelLocalNotification:notification]; but it did not clear the already fired local notifications from the Notification center (outside of the app).
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.
I would like to remove old notifications that my app has made from the iOS 5 Notification Center. Can I do this? If so, how?
To remove notifications from the Notification Center simply set your icon badge number to zero.
[[UIApplication sharedApplication] setApplicationIconBadgeNumber:0];
This only works if the number changes, so if your app doesn't use the badge number you have to first set, then reset it.
[[UIApplication sharedApplication] setApplicationIconBadgeNumber:1];
[[UIApplication sharedApplication] setApplicationIconBadgeNumber:0];
A more straightforward method that I use (and doesn't require badges) is to reset the array of scheduled local notifications to itself, as follows:
UIApplication* application = [UIApplication sharedApplication];
NSArray* scheduledNotifications = [NSArray arrayWithArray:application.scheduledLocalNotifications];
application.scheduledLocalNotifications = scheduledNotifications;
This has the effect that any scheduled notifications remain valid, while all "old" notifications that are present in Notification Center are removed. However, it also has the feel of something that might change in a future release of iOS, as I haven't seen any documentation for this behavior.
Of course, if you want to remove all notifications, it's simply the following:
[[UIApplication sharedApplication] cancelAllLocalNotifications];
Yes, you can cancel specific or all local notifications by calling
[[UIApplication sharedApplication] cancelLocalNotification:...];
or
[[UIApplication sharedApplication] cancelAllLocalNotifications];
If you want to clear notifications in swift and iOS 10.0
import UserNotifications
if #available(iOS 10.0, *) {
let center = UNUserNotificationCenter.current()
center.removeAllPendingNotificationRequests() // To remove all pending notifications which are not delivered yet but scheduled.
center.removeAllDeliveredNotifications() // To remove all delivered notifications
}
For me it only worked with sending a local notification with only a badge like this:
if([UIApplication sharedApplication].applicationIconBadgeNumber == 0) {
UILocalNotification *singleLocalPush = [[UILocalNotification alloc] init];
singleLocalPush.fireDate = [NSDate dateWithTimeIntervalSinceNow:1];
singleLocalPush.hasAction = NO;
singleLocalPush.applicationIconBadgeNumber = 1;
[[UIApplication sharedApplication] scheduleLocalNotification:singleLocalPush];
[singleLocalPush release];
} else {
[[UIApplication sharedApplication] setApplicationIconBadgeNumber:0];
}
And in the method
-(void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification
I can set the badge to 0 again.