I know I can cancel the notification when user tap this notification in notification center . But can I cancel the notification in other palce where I can't get the related local notification from system. Can I serialize the local notification, and cancel it when the app runs next time?
Sorry for make you misunderstand!
I want to dismiss a posted notification in the notification center, but not a scheduled one.
So what I want to ask is how to save the local notification object, then I can use it dismiss itself when next time the app launch. Maybe this job can't be done with current sdk.
If you need to cancel all notification you can use:
[[UIApplication sharedApplication] cancelAllLocalNotifications];
For cancelling a particular notification:
[[UIApplication sharedApplication] cancelLocalNotification:aNotification];
For getting the particular Notification you can use:
NSArray *notifArray = [[UIApplication sharedApplication] scheduledLocalNotifications];
for (int i = 0; i < [notifArray count]; i++)
{
UILocalNotification *aEvent = [notifArray objectAtIndex:i];
NSDictionary *userInfo = aEvent.userInfo;
NSString *notifId=[NSString stringWithFormat:#"%#",[userInfo valueForKey:#"id"]];
if ([id isEqualToString:cancelId])
{
[[UIApplication sharedApplication] cancelLocalNotification:aEvent];
break;
}
}
Here:
You need to store a id key value pair in the userInfo of your notification for identifying particular local notification
cancelId is the id of notification which you want to cancel (Stored in user info)
If you save a link to your notification, then you will can cancel it before it fires.
[[UIApplication sharedApplication]cancelLocalNotification:yourNotification];
Use this Code to get all scheduled notifications:
NSArray *reminderArray=[[UIApplication sharedApplication]scheduledLocalNotifications];
Then you can select the notification required and delete it.
[[UIApplication sharedApplication]cancelLocalNotification:yourNotification];
Related
I am displaying all user scheduling local notifications in a tableview. In the tableview I am using UISwitches. If the user sets switch OFF in particular index in tableview then that local notification should not fire (Here, I cancel the notification). My question is how to reschedule the particular local notification?
Here is the code in which you can switch off the particulat notification on basis of unique id
for(UILocalNotification *notification in notificationArray)
{
NSLog(#"%#",[notification.userInfo valueForKey:#"alarmUiqueId"]);
NSLog(#"%#",alrm.uniqueId);
if ([[notification.userInfo valueForKey:#"alarmUiqueId" ] isEqualToNumber: alrm.uniqueId])
{
[[UIApplication sharedApplication] cancelLocalNotification:notification ] ;
}
}
How do i handle (open alert for) all the UILocalNotification on click of one notification since apple clears other notification from notification center on click of one notification...also if the user opens the app ignoring the notifications in notification center, how do i handle(open UIAlertView for) them as well? i have seen this working perfectly in Calminder app
You can use [[UIApplication sharedApplication] scheduledLocalNotifications]; to get all the notifications that are previously scheduled. This method returns an NSArray instance so you can run a for loop to handle these:
for (UILocalNotification *notification in [[UIApplication sharedApplication] scheduledLocalNotifications]) {
// Handling codes goes here.
}
If you wants to have some extra informations in the notification you can use the userInfo property. It is a dictionary to store additional informations along the notification. You can set it like this:
notification.userInfo = // The dictionary goes here.
So now you can do this:
for (UILocalNotification *notification in [[UIApplication sharedApplication] scheduledLocalNotifications]) {
NSDictionary *userInfo = notification.userInfo;
// Handling codes goes here. Now you can use the user info dictionary to
// get what you stored into the userInfo dictionary when you are
// initializing the user info.
}
After this you can get all the informations and you can present it in an UIAlertView.
To call these codes above at app's launch you can use two methods:
-application:didFinishLaunchingWithOptions:
or
-applicationDidBecomeActive:
Hope this helps.
I have noticed that when a local notification is being received in an ios device, the notification appears in the Notification Center but the app badge number is not updated when the app is closed.
I need to touch the notification in the Notification Center for the local push message to be transferred to the app.
Is this the normal behavior? Can this be solved by using remote push notifications?
You can utilize the applicationIconBadgeNumber parameter in a UILocalNotification object.
Basically:
localNotificationObject.applicationIconBadgeNumber++;
Example:
UILocalNotification *localNotification = [[UILocalNotification alloc] init];
localNotification.fireDate = [[NSDate date] dateByAddingTimeInterval:20];
localNotification.alertBody = #"Some Alert";
//the following line is important to set badge number
localNotification.applicationIconBadgeNumber++;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
But the issue with this is that the badge number doesn't increment on subsequent (multiple) local notifications (there's a scenario here but for simplicity sake, lets just say the badge stays 1 even after 2 or more, back to back, local notifications).
In this case, Yes... Push Notification seems to be the way to go
(but be aware that Push Notifications aren't always reliable... check: link)
Well... to use Push Notifications for proper badge number updates, you should know that you can send a badge count in the Push Notification's payload.
When this push notification is received, the badge count is changed by iOS to the badge count specified in the Push Notification (& the app need not be open for this).
Example (continued):
Set applicationIconBadgeNumber to 0 as it helps in certain scenarios (optional)
- (void)applicationWillResignActive:(UIApplication *)application {
[[UIApplication sharedApplication] setApplicationIconBadgeNumber:0];
}
- (void)applicationWillTerminate:(UIApplication *)application {
[[UIApplication sharedApplication] setApplicationIconBadgeNumber:0];
}
Extra:
You can also manually set the badge number when you terminate/close or resign the application.
Generally... in any or all of the following methods:
-applicationWillResignActive
-applicationDidEnterBackground
-applicationWillTerminate (set badgeNumber when app closes)
Example:
- (void)applicationWillResignActive:(UIApplication *)application {
//Called when the application is about to move from active to inactive state.
[[UIApplication sharedApplication] setApplicationIconBadgeNumber:[[[UIApplication sharedApplication] scheduledLocalNotifications] count]];
//...
}
- (void)applicationWillTerminate:(UIApplication *)application {
// Called when the application is about to terminate.
[[UIApplication sharedApplication] setApplicationIconBadgeNumber:[[[UIApplication sharedApplication] scheduledLocalNotifications] count]];
//...
}
iPhone: Incrementing the application badge through a local notification
It is not possible to update dynamically the badge number with local notifications while your app is in the background. so You have to use push notifications. You can only increment badge while application is running in foreground and look for alternative solution you can go with here
iPhone: Incrementing the application badge through a local notification
It could be a possible duplicate link of.
Remove single remote notification from Notification Center
According to this post we can't delete single notification from notification center(NC).
For canceling notification we have below methods.
1).cancelAllLocalNotifications : it remove all notification.
2).cancelLocalNotification : it require notification as input.
I tried both methods, using first one it remove all notification from NC and the second one not seems work.
Here is the second snippet which I am applying on didRecivedRemoteNoitification method.
UIApplication *app = [UIApplication sharedApplication];
NSArray *eventArray = [app scheduledLocalNotifications];
for (int i=0; i<[eventArray count]; i++)
{
UILocalNotification* oneEvent = [eventArray objectAtIndex:i];
NSDictionary *userInfoCurrent = oneEvent.userInfo;
NSLog(#"userInfoCurrent : %#", userInfoCurrent);
int notiid=[[userInfoCurrent valueForKey:#"notificationID"] intValue];
if (notiid ==deletenotiid)
{
//Cancelling local notification
[app cancelLocalNotification:oneEvent];
break;
}
}
So my question is I am seeing couple of application that remove the tapped one notification from NC for example skype
Is there something which I am missing to apply.
Thanks for your valuable time.
You wrote that you included the above code in didRecivedRemoteNoitification. However, didRecivedRemoteNoitification is called only when a push notification arrives while the app is running in the foreground, in which case no notification is displayed and there is nothing to clear.
For notifications that arrive while the app is not running, when a user taps the notification, the notification data is passed to application:didFinishLaunchingWithOptions:. I think the tapped notification will be cleared if you clear the badge number.
- (void)application:(UIApplication *)app didFinishLaunchingWithOptions:(NSDictionary *)opts {
// check launchOptions for notification payload and custom data, set UI context
[self startDownloadingDataFromProvider]; // custom method
app.applicationIconBadgeNumber = 0;
// other setup tasks here....
}
Is it possible to do this? UIApplication's scheduledLocalNotifications doesn't seem to return notifications that have already been delivered to the user's notification center, so I think this may be by design, but I can't find any documented evidence of this.
Anyone know?
Thanks!
EDIT: Found this:
You can cancel a specific scheduled notification by calling
cancelLocalNotification: on the application object, and you can cancel
all scheduled notifications by calling cancelAllLocalNotifications.
Both of these methods also programmatically dismiss a currently
Here: http://developer.apple.com/library/mac/#documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/IPhoneOSClientImp/IPhoneOSClientImp.html
However, how do I get a reference to an already-delivered notification, if scheduledLocalNotifications doesn't give me notifications that have already been delivered?
EDIT 2:
Here's what I'm trying to do, after I've registered some notifications:
UIApplication *app = [UIApplication sharedApplication];
for (UILocalNotification *localNotification in app.scheduledLocalNotifications)
{
if (someCondition) {
[app cancelLocalNotification:localNotification];
}
}
}
The problem is that once they're delivered, they're no longer in 'scheduledLocalNotifications'.
You can solve this by adding your newly created notifications to your own NSMutableArray of notifications and check that array instead of app.scheduledLocalNotifications.
Something like this:
Add a NSMutableArray to your Viewcontrollers .h file:
NSMutableArray *currentNotifications;
Initiate it when initiating your ViewController
currentNotifications = [[NSMutableArray alloc] init];
When initiating a notification, also add it to your array:
UILocalNotification *notification = [[UILocalNotification alloc] init];
...
[currentNotifications addObject:notification];
[[UIApplication sharedApplication] presentLocalNotificationNow:notification];
Later when you want to cancel that notification, look for it in your array instead.
Also remove it from your array:
for (UILocalNotification *notification in currentNotifications) {
if (someCondition) {
[[UIApplication sharedApplication] cancelLocalNotification:notification];
[currentNotifications removeObject:notification];
}
}
Since iOS10 there is now native support for this if you have transitioned to using UNUserNotificationCenter.
The Apple docs state:
func getDeliveredNotifications(completionHandler: #escaping ([UNNotification]) -> Void)
Provides you with a list of the app’s notifications that are still displayed in Notification Center.
func removeDeliveredNotifications(withIdentifiers: [String])
Removes the specified notifications from Notification Center.
func removeAllDeliveredNotifications()
Removes all of the app’s notifications from Notification Center.
I've been looking for an answer to this as well. My problem was that I wanted to 'clean up' all app-related notifications sitting in the notification center just in case the user opens the app from its dock icon (since that does nothing to the previously fired notifications...)
Fortunately, it would appear that cancelAllNotifications doesn't just cancel scheduled ones, but EVERYTHING. So I simply held on to a reference of the existing scheduled notifications before blasting them, and then rescheduled them accordingly:
UIApplication *app = [UIApplication sharedApplication];
NSLog(#"\nScheduled notif count (prior) = %d", app.scheduledLocalNotifications.count);
NSArray *scheduledNotifs = app.scheduledLocalNotifications; // hold on to a reference
[[UIApplication sharedApplication] cancelAllLocalNotifications]; // blast everything
NSLog(#"\nScheduled notif count (post-wipeout) = %d", app.scheduledLocalNotifications.count);
for (UILocalNotification *notif in scheduledNotifs) {
[app scheduleLocalNotification:notif]; // put them back
}
NSLog(#"\nScheduled notif count (post-repopulation) = %d", app.scheduledLocalNotifications.count);
Not sure if that helps anyone but this worked great for my situation.
Try this links:
Apple doc
Some tutorial
And local notification is registering to device notification center, not in your app.
But, if your app is running, and is a notification time, then you can get notification parameters in game in:
-(void) application:(UIApplication*)app didReceiveLocalNotification:(UILocalNotification*) notification
{
// local notification is geted
}
You can do it when you schedule the notification if you also save it in NSUserDefaults, using NSKeyedArchiver to convert it to NSData.
To get it back as UILocalNotification you use NSKeyedUnarchiver. Then you're able to delete it using the cancelLocalNotification method.
Fully explained here (Swift version + link to original Obj-C solution)
After seeing your updated code, it seems you are interested in cancel all the notifications with-in for loop, so you can use -
[[UIApplication sharedApplication] cancelAllLocalNotifications];