I want to get the reminder at each notification comes from the web service in the application for the different tasks. For that what i have used the following methods.
but i am not getting push notific
- (void)application:(UIApplication *)app didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken
{
}
- (void)application:(UIApplication *)app didFailToRegisterForRemoteNotificationsWithError:(NSError *)err {
}
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {
}
Receiving push messages in the app
So what happens when your iPhone receives a push notification? There are three possible situations:
The app is currently running in the foreground. Nothing happens on the screen and no sound is played, but your app delegate gets a notification. It is up to the app to do something in response to the notification.
The app is closed, either the iPhone’s home screen is active or some other app is running. An alert view pops up with the message text and a sound is played. The user can press Close to dismiss the notification or View to open your app. If the user presses Close, then your app will never be told about this notification.
The iPhone is locked. Now also an alert view pops up and a sound is played but the alert does not have Close/View buttons. Instead, unlocking the phone opens the app.
I ran into a lot of problems on Push notification. Please note: if you are not getting the device token back, check to make sure the device is connected to the internet. If not device cannot contact the APN server. It took me days to find this out
Related
I was trying to fetch remote notification info when the app was not running,so I was told that I can get from :
UILocalNotification *localNotification = [launchOptions
objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey]
in method:
- (BOOL)application:(UIApplication *)application
didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
,but still can't get info.
Then I use alertView to show the info on iPhone(launch without Xcode),still can't get the info.
Any other issue would cause this? Please let me know if you have any ideas.
How to retrieve and handle remote notifications:
app is running
The userInfo in below method already includes the push notification
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
{
}
app not running
The value for key in launchOptions includes the push notification,under two circumstance:
1.screen is locked,when receive the remote push notification,screen is lighted and user unlock the screen then directly launch the app.
2.user tap on the notification on the drop-down menu to launch the app.
If user tap on the app directly,then the notification will be gone and missed.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
[launchOptions valueForKey:UIApplicationLaunchOptionsRemoteNotificationKey] description];
}
That key is only in the launch options when the user starts your app from the notification (e.g. taps on it in notification center). Incidentally, I don't think a remote notification would be the class you're using (UILocalNotification).
If your app wasn't in the foreground when the device received the push, and the user didn't launch your app from the notification, the notification is gone. You have to check your own servers to see if you missed anything.
With iOS 5, push notifications can appear as banner and disappear after a few seconds.
I understand that didReceiveRemoteNotification will be called when user taps on the banner.
My question is, if the banner has disappeared and my user sees that there is a badge number on the app, they will tap on the app icon to start the app. Now if the app is running in the background, how do I check that the app is brought to foreground and there has been a notification, and do the necessary?
The purpose of my notification is basically to inform user there has been an update to the app content and encourage them to run the app to get the latest contents. My app only checks for latest contents at launch time and doesn't check for updates periodically.
This question is a bit old, but I'll pop what I've found in here anyway.
There are two methods you need to implement in your app delegate to check if your app was either launched from the remote notification (From when the app is not running on your device), or received the remote notification while running (in the background or foreground).
First is a method that is already in your App Delegate:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
To check if this was launched from a remote notification, have some code similar to this:
// Check to see if launched from notification
if (launchOptions != nil)
{
NSDictionary* dictionary = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
if (dictionary != nil)
{
NSLog(#"Launched from push notification: %#", dictionary);
// DO SOMETHING HERE
}
}
The other method you will need to implement is specifically for the case that your application for when your application is running:
-(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
{
NSLog(#"Received notification: %#", userInfo);
}
How you handle the notification from there is up to you, but that's how your app knows about it!
In this second method, you can check the UIApplicationState of the passed application to find out if you were in the foreground or background.
Can I get list of push notifications (APNS notifications) for my app when app became from background to foreground mode?
In foreground mode i can receive info about push notification in callback
-(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
Other case:
My app receive push notification, when app in background mode.
After this i click on app icon, and i want to get info about received notification. How can i get this info?
If i click directly on the notification (not on app icon), in background mode, then callback didReceiveRemoteNotification is call.
Can I get list of push notifications (APNS notifications) for my app when app became from background to foreground mode?
No. There is no list. You can only get one notification at once. When the users iPhone is offline and you send 5 notifications the user will only get the last one you have send.
If the user starts your app using the open action on the notification you will get it on start using:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
Other Case
My app receive push notification, when app in background mode. After this i click on app icon, and i want to get info about received notification. How can i get this info?
You can't. When the user closes the notification and opens you app later it is already gone and there is no way to access it.
When you send push notifications you probably have a server reachable over the internet, where you register the devices of the user.
The usual way to handle this is to store the notifications on this server and query it on app launch... so use the notification just to notify the user to start your app and then check your server on launch of the app for whatever you want.
Once your application reaches foreground and actively running, the notification alerts like sound, alert won't be displayed or you wont be notified.
But you will get a call back in the UIApplication Delegate that you can make use of it.
The api is,
- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken;
And, if your application is running in background, then the notification appears and only when you click on "View" button, you will get the call back in UIApplication delegate.
If you click on Close button, you won't get the call back in the application.
My iPhone app's delegate has push notifications all set up:
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {
for (id key in userInfo) {
NSLog(#"key: %#, value: %#", key, [userInfo objectForKey:key]);
}
}
Now, I launch it, then suspend by pressing the home button. I then send a notification to the device, and the notification is received. A dialog appears with two buttons - "Close", and "View". Now, when I click "View", the app gets resumed, and didReceiveRemoteNotification is sent to the delegate.
But if I click "Close", the app remains in the background. If I then manually launch the app, neither "didReceiveRemoteNotification", nor "didFinishLaunchingWithOptions" are sent. So - where is my payload? How do I get the payload in this case?
If the user closes the notification and launches the application using the app icon you won't get the payload anymore.. it is lost forever then.
This is described at http://developer.apple.com/library/ios/#documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/IPhoneOSClientImp/IPhoneOSClientImp.html in the "Handling Local and Remote Notifications" section.
Also notice that the server only saves one notification for your app for a user. If the device is offline and your notification is not received but you send another one the first one will never reach the user because it replaces the first one.
As i said in the title of this thread, I have a problem with Push notification of my application.
There is 2 cases :
When the app asks you if you want push notification and you push OK, it's working great.
This function :
- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)devToken
is called when registerForRemoteNotificationTypes is called :
- (void)applicationDidFinishLaunching:(UIApplication *)application {
// Add registration for remote notifications
[[UIApplication sharedApplication] registerForRemoteNotificationTypes:(UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound)];
...
}
But when you select NO at the beginning, and then you change your settings to accept push notification, nothing append and this function didRegisterForRemoteNotificationsWithDeviceToken is never called.
Please help me, i'm getting crazy!
I see you register for remote notifications in:
- (void)applicationDidFinishLaunching:(UIApplication *)application
If your application is running on a iOS device with support for multitasking that might not be the right place.
The above method is called when you initially launch your app from cold. This is when you are prompted to accept or decline Push Notifications - and in your case decline.
When you later exit the application to change the settings in the device wide control panel the application is not quit - it is merely resigning as the foreground application. When you have enabled Push Notifications in the control panel and return to your application - the application is not launched again but moves from being backgrounded to the foreground.
Your application delegate will at this point receive an:
- (void) applicationDidBecomeActive:(UIApplication *)application
try registering for Push Notifications there instead using:
- (void)registerForRemoteNotificationTypes:(UIRemoteNotificationType)types
You could also prevent backgrounding by setting the “Application does not run in background” property in the application’s Info.plist file (UIApplicationExitsOnSuspend).