I’m able to send and receive the push notification…In the push notification i will be sending some json encoded data…
Once my device receives the push notification,then if the user taps on the notification banner device can get the json data received by the push notification.…But what if user clears the notification banner,how can the iOS device receive the json data?…Any suggestion guys?…
You can set the content-available flag to 1 and iOS will call your app's delegate.
There are just 2 ways to get push notification details, when application is not working. First one is not very reliable since it will provide you latest push notification only. Second one, you can't really use if you want banner and you want to notify user. Third one is just an alternate way to get latest updates from server.
Get details of last push notification in application Launch method :
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
NSDictionary *dicAPNS = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
Use silent Push notification, where user wont get any notification but you will be able to get notified. This is done by sending "content-available:1" in APNS Payload.
Call an server call to check if you have any update. So you can grab data from server what you might have received in missed push notification.
I think iOS push notification fully depends on user's wish.I think the another web service needs to load all the content of data in push notification, if push notification is disabled or deleted by user.
Related
I have an app to work on. And I need to know if there is already some push notifications before the app is opened. Is there a way to solving the issue?
Thanks
You can't push a notification to a device when your application hasn't been opened at least once - the user has to authorize push notifications and you need get the push token value - returned after calling registerForRemoteNotifications - and send it to your server.
There's no guarantee that your app will see multiple push notifications if they all arrived when the application wasn't running. Often you'll just see the most recent notification. You should store all of the notifications on your server and have your application request them when it becomes active if there's at least one notification waiting for you.
Once you've registered for notifications you need to setup didReceiveRemoteNotification method in your AppDelegate. There you can handle any information received from a Push Notification. Here's a link to there relevant documentation.
I build xcode app that get push notification, the main problem is that the push notification is very critical for me.
so I want to check if the push notification is delivered to the device with the app installed, I understand that if the iphone dosn't have internet connecction / 3G the push notification is not getting to the device.
how can I check if the device get the notification or not?
how can I check if the APNS successful to deliver the push notification?
I want to send sms if the push notification is not deliver to the device so I think about the idea to get the notification event when it's open by the push notification, and to send request to my server so i can know if the push notification is successful deliver or not. the main problem is that the user need to open the app every time he get the notification and in the night it's a problem. so this option is not good for me.
I check the feedback server push notification but i don't find any info that I can get if the push notification is delivered or not
any idea??
With iOS7 you have a new method called
application:didReceiveRemoteNotification:fetchCompletionHandler:
which you probably could use for your task. From Apple's Docs:
Implement this method if your app supports the remote-notification background mode.
...
When a push notification arrives, the system displays the notification to the user and
launches the app in the background (if needed) so that it can call this method. Use this
method to download any data related to the push notification. When your method is done,
call the block in the handler parameter.
Unlike the application:didReceiveRemoteNotification: method, which is called only when
your app is running, the system calls this method regardless of the state of your app.
The short answer, you can't, since APNS is one way. However, since an app can execute arbitrary code upon receipt of a notification, you can use this to say, send an http request to your own server when the notification is recieved.
There are any number of reason why push notifications might not get delivered to your user, or might not be delivered in a timely manner. Apple does not provide any mechanism for you to query the status of a push notification that you have sent.
If your app is currently running on the user's device and the user is accepting notifications for your app, you can implement the following method in your app delegate. It would be called whenever a push notification is received and in this method you could send a request back to your server to indicate the message was received. However this will only work while the user is running your app.
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
In general though, it sounds like you'e relying on push notifications for something you shouldn't. From Apple's Local and Push Notification Programming Guide:
Important Because delivery is not guaranteed, you should not depend on
the remote-notifications facility for delivering critical data to an
application via the payload. And never include sensitive data in the
payload. You should use it only to notify the user that new data is
available.
There is no way to find out whether the notification was delivered to the device or no. APNS is a one way service. If there is no internet connection on the device then the APNS server will hold the last notification for some period of time which is no specified by Apple. If a new notification is sent to APNS for delivery then the old notification data is lost and replaced by the new data if its undelivered. If the notification is delivered then also the old notification data is deleted on the APNS server.
Please go through the following link : Apple Push Notification
Hope this helps you...........
If you are using JAVAPNS to send the APNS notification, you can use the below:
List<PushedNotification> notifications =
Push.combined("alert", badge, "default", "cert.p12", "certpassword", true, deviceToken);
for (PushedNotification notification : notifications) {
if (notification.isSuccessful()) {
//Push is successful. Do your thing...
}
else {
//Push is not successful. Do your thing...
}
}
I trying silent push notification to wake app in background and calling a specific Api but it doesn't work properly
-(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler{//Fetching data using AfNetworking
completionHandler(UIBackgroundFetchResultNewData);}
By the way : whatsApp doing something like this:
notify the sending user that the message is delivered to receiving user
Silent notifications will NOT arrive when:
- background fetching is disabled
- the user has killed the app by sliding up from the app chooser screen
WhatsApp most likely sends notifications that has an 'aps' payload (which will cause iOS to display it on the notification screen), and the 'content-available' flag present (which will cause iOS the forward it immediately to you app, if not prevented by the 2 conditions above).
Once the app is opened by the user, the app will let the server know which messages have been displayed on screen. The server could then send a silent push, or have the app poll while active, to update the checkmarks on screen.
The thing to remember is that push notifications are not reliable sources o truth. They are 'pinging' the app, and the app and server need to implemented the actual logic.
Push notifications are fire-and-forget by design, and they're not even guaranteed to be delivered to client device. So no, you cannot confirm delivery of a push message.
WhatsApp and other messengers must be using their own infrastructure to track messages' delivery.
I found Working around on this Problem and Answer it at this question
Silent push notifications only delivered if device is charging and/or app is foreground
The user force killed the application and then receives 3 push notifications from the server.
When clicking on the push notification, the application will relaunch.
Is it possible to read user info dictionary of all push notifications available in the notification bar for that particular application?
No, it is not possible. You need to implement a web service.
The web service will provide all unread notifications.
If your application isn't running then only the notification that the user actually tapped on will be delivered to your application in didFinishLaunchingWithOptions. The content of the other notifications is not available.
If the user launches your application from the app icon rather than from the notification then no notification information is available.
Your app should retrieve any updates whenever it is launched, regardless of the availability of notification data in didFinishLaunchingWithOptions. The presence of notification data should act as a hint as to the behaviour the user is expecting from your app (for example, if they tapped a notification that they had received a message from a specific user they would probably expect the app to open to that message).
Yes it is possible to read the push notification by clicking it from the navigation controller.
First of all when application is open it comes in didFinishLaunching method. And if you trying to open application from the navigation push notification click then you can get the notification in launchOptions variable. It contains the dictionary regarding the Pushnotification.
You can find it by below code.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
NSDictionary *userInfo = [launchOptions valueForKey:#"UIApplicationLaunchOptionsRemoteNotificationKey"];
NSDictionary *apsInfo = [userInfo objectForKey:#"aps"];
if(apsInfo) {
//there is some pending push notification, so do something
}
}
I have implemented the UIApplicationDelegate method -(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler to handle push notifications, it works fine. In some situations, I need to retrieve the payload of the push notification. But sometimes this delegation method is not called.
I have a question about retrieving the payload (userInfo) in this scenario:
The app running either in background or not launched. The app received a push notification, a banner is shown, sound is played, and message is displayed, app icon badge increased, and the push notification can be seen in the iOS notification centers. If the user taps the notification when it's shown or in the notification center, the app launches, and the didReceiveRemoteNotification: method is called.
However, if the user just tap the app icon and launch the app in normal ways, the method is not called, and I can't retrieve the userInfo.
From Apple's documentation on handling push notifications:
The notification is delivered when the app isn’t running in the foreground. In this case, the system presents the notification, displaying an alert, badging an icon, perhaps playing a sound, and perhaps displaying one or more action buttons for the user to tap.
The user taps a custom action button in an iOS 8 notification. In this case, iOS calls either application:handleActionWithIdentifier:forRemoteNotification:completionHandler: or application:handleActionWithIdentifier:forLocalNotification:completionHandler:. In both methods, you get the identifier of the action so that you can determine which button the user tapped. You also get either the remote or local notification object, so that you can retrieve any information you need to handle the action.
The user taps the default button in the alert or taps (or clicks) the app icon. If the default action button is tapped (on a device running iOS), the system launches the app and the app calls its delegate’s application:didFinishLaunchingWithOptions: method, passing in the notification payload (for remote notifications) or the local-notification object (for local notifications). Although application:didFinishLaunchingWithOptions: isn’t the best place to handle the notification, getting the payload at this point gives you the opportunity to start the update process before your handler method is called.
If the notification is remote, the system also calls application:didReceiveRemoteNotification:fetchCompletionHandler:.
If the app icon is clicked on a computer running OS X, the app calls the delegate’s applicationDidFinishLaunching: method in which the delegate can obtain the remote-notification payload. If the app icon is tapped on a device running iOS, the app calls the same method, but furnishes no information about the notification.
The highlighted part kinda saying there is no obvious way to access the payload of the push notification in this way. So is there a way to work around this issue?
Thank you!
It is the default behavior of iOS. You will never know the payload unless user opens your app via tapping on the notification.
You can use silent push notifications if you want to send custom data (max 2048 bytes) or commands to your mobile app.
In the push notification set 'content-available' to 1 so you app gets some time to process data and also add your custom content to the notification.
I also use silent push notifications to trigger my apps to update by REST HTTP calls, since my data can be bigger than the max size... The only downside is that Apple might block your background activities if you are battery or processor intensive. Visual push notifications are always delivered.
Things I hate most are visual push notifications like 'you've got a new message' , on which I click sometimes when no data connection is available and the app will not show me the message... You can solve this by sending a silent push notification with data and only if the data could be fetched from the server, or
stored correctly in case you can send it all in the notification, you set a local notification.
Choose between visual and silent push notifications wisely is my only advise.
Check the following link for more official Apple info: https://developer.apple.com/library/content/documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/CreatingtheNotificationPayload.html