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push notification handling
(2 answers)
Closed 9 years ago.
Is it any way to known when an iOS app is launched, if Push notifications were sent to the device ? ( I want to access to the payload to retrieve information from the notification )
Thanks,
You should add something like this to your code :
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary
*)launchOptions {
NSDictionary *remoteNotif = [launchOptions objectForKey: UIApplicationLaunchOptionsRemoteNotificationKey];
//Accept push notification when app is not open
if (remoteNotif) {
[self handleRemoteNotification:application userInfo:remoteNotif];
return YES;
}
return YES;
}
Note that you will only get the push notification payload if the app was launched by tapping the notification. If it was launched by tapping the app icon, you won't get the payload.
There are methods from UIApplicationDelegate from where you see if there is notification received
You could see in your AppDelegate didFinishLaunchingWithOptions method if user has launced the app with the notifications e.g
UILocalNotification *notif =
[launchOptions objectForKey:UIApplicationLaunchOptionsLocalNotificationKey];
if (localNotif) {
irLog(#"Recieved Notification");
}
for local notification you have posted you can have a look at this method
- (void)application:(UIApplication *)app didReceiveLocalNotification:(UILocalNotification *)notif
for remote notifications you can have a look at this method
-(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
Related
I receive a push notification when the my app is closed or canceled. Is there a way to set an nsuserdefault when this happens? I know if a user taps the notification or opens the app from the notification you can check if the app was inactive or canceled but what if they don't open the app from the notification but rather just launch the app by clicking on the icon?
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {
I know this method is called but it seems like I can not save to nsuserdefaults if the app is terminated or canceled.
If the app is closed or inactive and user opens the app through the icon ,
you will get the remote notification in "didFinishLaunchingWithOptions" method if any notification is available , there you can set you userdefault if you want .
Here is the code to get the remote notification in "didFinishLaunchingWithOptions"
(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
if (launchOptions) { //launchOptions is not nil
NSDictionary *userInfo = [launchOptions valueForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
NSDictionary *apsInfo = [userInfo objectForKey:#"aps"];
if (apsInfo) { //apsInfo is not nil
[self performSelector:#selector(postNotificationToPresentPushMessagesVC)
withObject:nil
afterDelay:1];
}
}
return YES;
}
For more help please visit this link #staticVoidMan have answered it very well .
Hope this Helps!
I have searched for hours but somewhere is saying that,
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandlerNotification
is called, regardless of application is in active state or inactive state. Somewhere it says when application is not active it push notification calls your didFinishLaunchingWithOptions and there you can detect notification like this :
NSDictionary *userInfo = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey]`
In my case, both are working if user tap on notification and everything is fine, but the problem occurs when user does not tap on notification and direct open app from its icon, then neither didFinishLaunchingWithOptions detect it has notification nor didReceiveRemoteNotification get called. I need to save messages in database, received from push notification, but without tapping on notification how to call method?
to get notification data in didFinishLaunchingWithOptions do this code
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
if(launchOptions != nil)
{
NSDictionary *remoteNotif = [launchOptions objectForKey: UIApplicationLaunchOptionsRemoteNotificationKey];
if(remoteNotif != nil){
[UIApplication sharedApplication].applicationIconBadgeNumber = [[[remoteNotif objectForKey:#"aps"] objectForKey: #"badge"] integerValue];
//do something here to process notification
}
}
}
Hi Im currently developing an app where i have push notifications activated. I use parse.com. I have got it working so far that i can send a notification and the device receives it and i also get a badge on the app. But when i open the nothing happens and the badge does not disappear. I've set it in my appdelegate.m so parse is handling the push notifications. Heres some code that im using:
- (void)application:(UIApplication *)application
didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)newDeviceToken {
// Store the deviceToken in the current installation and save it to Parse.
PFInstallation *currentInstallation = [PFInstallation currentInstallation];
[currentInstallation setDeviceTokenFromData:newDeviceToken];
[currentInstallation saveInBackground];
}
and also:
- (void)application:(UIApplication *)application
didReceiveRemoteNotification:(NSDictionary *)userInfo {
[PFPush handlePush:userInfo];
}
Thanks
Ok thaks but how to i show the content of the push notification in the alert view? Or is that not a problem do i just have to configure a alertview with no text?
There are two scenarios:
App closed
When the app is closed and the user taps on a notification it's like when taps on the app icon. The app starts from application:didFinishLaunchingWithOptions:. To know if the app is opened normal (tap icon) or with a notification, just check the dictionary launchOptions for the key UIApplicationLaunchOptionsRemoteNotificationKey.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
NSDictionary * pushDictionary = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
if (pushDictionary)
{
//AlertView
}
}
App opened
When the app is opened there are two possible case
App in background UIApplicationStateInactive
App in foreground UIApplicationStateActive
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
{
if (application.applicationState == UIApplicationStateInactive)
{
//AlertView
}
else if (application.applicationState == UIApplicationStateActive)
{
// AlertView
}
}
pushDictionary and userInfo are exactly the same dictionary that represents the notification.
Edit 1
A push notification is a JSON file that iOS automatically convert into a NSDictionary. The standard configuration is:
{"aps":
{
"alert":"Text message",
"sound":"default",
"badge":"1" //the number shown on the app's icon
}
}
From this base you can extend the JSON and put inside your own content. For example
{"aps":
{
"alert":"Text message",
"sound":"default",
"badge":"1" //the number shown on the app's icon
},
"Name":"Fry"
}
Now you can retrive the name in this very simple way:
NSString * name = userInfo[#"Name"];
and show it in the alert.
Edit 2
To show the content of push in UIAlertView just do this:
UIAlertView *av = [[UIAlertView alloc] initWithTitle:name
message:name
delegate:self
cancelButtonTitle:nil
otherButtonTitles:#"Ok", nil];
[av show];
If you receive push notification while your app isn't active (killed)
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
will not be triggered. Instead of that you will have to use object with key UIApplicationLaunchOptionsRemoteNotificationKey from launchOptions dictionary inside
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
I am using notification in one of my app ,when app is active , notification is received , i process data and everything is fine , but I do not receive any notification when app is in background or killed.What is the issue can any one plz help me ?
Thank you!
Here is what I doing so far
- (void)application:(UIApplication *)app didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {
tokenstring = [[NSString alloc] initWithFormat:#"%#",deviceToken];
tokenstring = [tokenstring stringByTrimmingCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:#"<>"]];
tokenstring = [[NSString alloc]initWithFormat:#"%#",[tokenstring stringByReplacingOccurrencesOfString:#" " withString:#""]];
NSLog(#"TokeinID:>> %#",tokenstring);
}
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {
NSLog(#"didReceiveRemoteNotification: %#",userInfo);
AudioServicesPlaySystemSound(1002);
//Some code or logic
}
- (void)application:(UIApplication *)app didFailToRegisterForRemoteNotificationsWithError:(NSError *)err {
NSLog(#"didFailToRegisterForRemoteNotificationsWithError: %#",err.description);
}
When you receive remote notifications, -application:didReceiveRemoteNotification: is only called when your app is in the foreground. If your app is in the background or terminated, then the OS may display an alert or play a sound (depending on the aps dictionary in the notification), but the delegate method is not called.
The remote notification received in the background will only passed to your application if it is launched with that notification's action button, and then you need to look at the launch options dictionary on -application:didFinishLaunchingWithOptions: to see the content of the notification.
If you're looking at new content fetching/remote notification background support with iOS7, check Will iOS launch my app into the background if it was force-quit by the user? and see if that helps, as there are very specific circumstances that those functions work in.
little code ..
When app is not running
(BOOL)application:(UIApplication *)application
didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
is called ..
where u need to check for push notification
UILocalNotification *notification = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
if (notification) {
NSLog(#"app recieved notification from remote%#",notification);
[self application:application didReceiveRemoteNotification:(NSDictionary*)notification];
}else{
}
i implemented the Remote Notifications in my application! if my App is in Background and a Push Message was send to my Device, i react with this method:
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler
{
...Do Stuff
}
This is working great when App is in Foreground or in Background State! But what if my App is not running at all?! Can´t i react to Push Messages when the app is not running?I mean WhatsApp can do this, right?!
If user clicks on push notification from notification center you will have information in launchOptions with the push notification content and you can use below code to check if application was launched clicking push notification or it was there as well,
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
[[UIApplication sharedApplication] registerForRemoteNotificationTypes:(UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert)];
NSLog(#"LaunchOptions->%#",launchOptions);
NSDictionary *userInfo = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
if (userInfo) {
[self performNotificationAction:userInfo];
}
return YES;
}
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo{
// NSLog(#"userInfo->%#",userInfo);
[self performNotificationAction:userInfo];
}
-(void)performNotificationAction:(NSDictionary*)userInfo{
//Do the stuf whatever you want.
//i.e. fetch the message or whatever extra information sent in push notification
}