I have the following issue: "My app receive some remote notifications from an own server just to show to the user some practical information. I am not using a icon badge, because I don't need it. If the application user touch the remote notification from the iOS Notification Center my application can catch it without any problem, I receive the options from application:didFinishLaunchingWithOptions: or, if the application is open I catch the remote notification with application:didReceiveRemoteNotification: selector. But, now I want to remove these notifications from iOS Notification Center because It is just a message and I have been looking for the answer in another posts and I've tried these solutions in my app and they don't work"
Some solutions were the next:
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {
[application cancelAllLocalNotifications];
application.applicationIconBadgeNumber = 0;
...
}
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
...
if (launchOptions) {
[application cancelAllLocalNotifications];
application.applicationIconBadgeNumber = 0;
}
...
}
And the remote notification still in the iOS Notification Center, how can I remove from that place without any tricky code or is an iOS SDK issue? I don't think that an issue was possible because Tweetbot app remove its remote notifications from iOS Notification Center after you enter to the app.
Regards!
With introduction of UNUserNotificationCenter for iOS 10 and above, it is now possible to remove few or all remote notifications of your app.
UNUserNotificationCenter documentation
With a shared singleton instance of this class, it is possible to manage delivered remote notifications on the device. Specifically, the following methods can be used:
func removeDeliveredNotifications(withIdentifiers: [String]) if you want to remove specific notification of your app, OR func removeAllDeliveredNotifications() to remove all notifications of your app.
First of all make sure you haven't set badge notification to be off in the control panel (I noticed that if the badge has a number to begin with, then badging is turned off in the control panel, it cannot be set to 0).
If its not turned off then in addition to setting applicationIconBadgeNumber to 0, also try canceling all local notifications (even if you haven't queued any, if you have first get a list of them, then cancel them, then register them back again). Yes clearing local notifications can have an effect on being able to clear the badge number for remote notifications.
Related
I have a scenario in which app will get push notification and need to show that messages in home screen of my app, for that i saved the message array into user defaults from my app delegate and everything works well, but in following conditions it's not working
if app is in killed state and a notification came and user triggeres the app through the app icon (not from push notification )
if app is in background and notification came and user enters to app through app icon (not from push message ) in this case also
Then i searched for solutions and came to know about silent push notifications (for background mode) and nothing else so i need to know how to handle all scenarios by push notifications and my appdelegete is
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
NSDictionary *remoteNotif = [launchOptions objectForKey: UIApplicationLaunchOptionsRemoteNotificationKey];
if (remoteNotif) {
[self handlePushMessage:remoteNotif];
}
return YES;
}
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
{
[self handlePushMessage:userInfo];
}
-(void)handlePushMessage :(NSDictionary*)userInfo{
//method to handle push message
}
Thanks in advance
This is a common issue: if the user does not open your app by means of the displayed notification, there is no* way of getting the related information.
* A possible solution employed by many apps is to check with a remote server for unread notifications (e.g. check for an unset read-date field).
In scenario 1. NSDictionary *remoteNotif = [launchOptions objectForKey: UIApplicationLaunchOptionsRemoteNotificationKey]; here remoteNotif return nil as you enter into the app through triggering app icon.
In scenario 2. You can get push notification info through the following method
-(void) application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler
{
if (userInfo) {
[self handlePushMessage:userInfo];
}
}
if app is in killed state and a notification came and user triggeres the app through the app icon (not from push notification )
If the app is in killed state then the push notification payload can only be handed over to the app when the user taps the push notification itself. If the user launches the app from app icon then the notification payload will not be passed to the application
if app is in background and notification came and user enters to app through app icon (not from push message ) in this case also
if you are targeting iOS7 and up then you need to enable background mode for remote notifications. Please check below link in order to get notification payload even when app is in background
didReceiveRemoteNotification not working in the background
The above mentioned app delegate method gets called when the app is in foreground,Background and suspended state.
There is no way to get the notification payload when app is killed and when the app icon is directly clicked instead of push notification in notification center.
Enable "Remote Notifications" under background modes in capabilities in target settings. This will fetch the notification data even when the app is in the background. Also, make sure to implement:
-(void)application:(UIApplication *)application
didReceiveRemoteNotification:(NSDictionary *)userInfo
fetchCompletionHandler:(void (^)(UIBackgroundFetchResult result))handler;
in your app delegate.
In android we can make alert message of push notification dynamically on conditions(data) which comes in push notification payload. i.e piece of code gets executed when push comes and then alert is shown.
Cant we do this in ios? Do we need to send alert message from API all the time? cant we change it on client side(ios)?
In fact, you can. You just need to send a "silent" remote notification, handle the notification in your app and display local notifications depending on the payload. The steps are:
Implement didReceiveRemoteNotification:fetchCompletionHandler:
Make sure to register for remote notifications, see documentation here:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
[[UIApplication sharedApplication] registerForRemoteNotificationTypes:(UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound)];
return YES;
}
Also make sure to edit Info.plist and check the "Enable Background Modes" and "Remote notifications" check boxes:
Additionally, you need to add "content-available":"1" to your push notification payload, otherwise the app won't be woken if it's in the background (see documentation here):
For a push notification to trigger a download operation, the
notification’s payload must include the content-available key with its
value set to 1. When that key is present, the system wakes the app in
the background (or launches it into the background) and calls the app
delegate’s
application:didReceiveRemoteNotification:fetchCompletionHandler:
method. Your implementation of that method should download the
relevant content and integrate it into your app
So payload should at least look like this:
{
aps = {
"content-available" : 1,
sound : ""
};
}
Just leave the sound property empty and omit the alert/text property and your notification will be silent.
Unfortunately, the app won't be woken up, if it's not running at all (force-quit), see this answer.
I am trying to achieve silent push notification.I need to save the silent push notification data in my database in app so that I can show the unseen notification and its count to users when the users uses the app.
I am using Xcode 6.1 and targeting iOS 7 and later devices. Currently, I am using development certificates for push notification.
I have checked remote notification in the background modes of target project capabilities, also the info-list's background mode has "App downloads content in response to push notifications" in required background modes.
In my AppDelegate.m, I am able to register remote notification and also get the device token. Now when I send push notification, my delegate method gets called when app is in foreground but when app is in background/not running, it doesn't get called though I receive the push notification in banner.
I have implemented this method in AppDelegate.m
-(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler{
NSLog(#"Received push notification");
}
The payload I am sending looks like this:
{
aps: {
content-available: 1
}
}
I tried adding priority, sound etc. But nothing helped me.
Can someone help me to figure out how to save silent push notification data in app when app is in running in the background or not running?
Kindly help me to resolve this issue.
So, you should definitely be able to receive them in the background, but be warned that if the user deliberately kills your app from the task switcher then it won't get them anymore.
With iOS 7 and above the callback is as you say, but before that it was
- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken
Seems unlikely you are targeting iOS 6 though so I would go with either a malformed push packet or background push settings not being quite right.
Do you have the apps info.plistUIBackgroundModes set to remote-notificiton?
Then also add this method to help you debug
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult result))handler
{
//Success
handler(UIBackgroundFetchResultNewData);
}
Silent push notifications are different than user-facing notifications. They are treated as low priority and are rate limited by both APNS and iOS. In practice, this means that silent notifications can only be sent infrequently and there may be a very long delay before they are delivered to an application.
The behavior you are describing is likely the wakeup rate limiter on the device. iOS limits how often apps are launched to perform background work. This is to prevent abusive behavior - some apps might want to stay alive in the background draining the battery forever.
The wakeup rate limiter is not active when Xcode is attached, which makes silent notifications appear to be delivered instantly.
My iOS Notifications book has a lengthy chapter describing the rate limiters and how to work with them.
I am receiving a remote push notification, and i need to register a UILocalNotification, within 30 minutes, but i need to do it even if the user do not click in the notification, in the background.
There's any way to do it, like in :
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
{
}
It works fine here, but only if the user clicks in the notification, or if the app is currently running.
You can't handle a remote notification if the application is not running until the user doesn't launch your app. You should deal with the business logic on server-side. Keep track of when the notifications are sent and trigger the appropriate action after the time frame are exceeded.
You need to turn on "background fetch" in the "capabilities" section of your project settings, and use the application:didReceiveRemoteNotification:fetchCompletionHandler delegate method in your ApplicationDelegate file. This way you can handle remote notifications in the background. Don't forget to set the content-available flag in your aps dictionary when sending the push.
I'm setting up Apple push notification for my iOS app.
If several notification are received when the app is not running (or in background), how can all received notifications be taken into account when the app (re)starts ?
In iOS 5 the push notifications accumulate in the tray.
In application:didFinishLaunchingWithOptions:
use UIApplicationLaunchOptionsRemoteNotificationKey. This will give you the notification dictionary.
May be this can help you -
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
NSDictionary* dictionary = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
}
There is no way of getting push notifications programmatically.
The only way to handle these notifications is to implement application:didFinishLaunchingWithOptions: which will contain data about the notification that the user tapped.
The good way to achieve what you want is to have a web service of your own that you call when your application enters foreground.