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
}
Related
My iPhone's screen is locked and sometimes, when I send push notifications a from PHP script, it disappears automatically. What can be the reason for this issue?
I use background fetch execution for didReceiveRemoteNotification:
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
fetchCompletionHandler:(void (^) (UIBackgroundFetchResult))completionHandler {
NSLog(#"Notification received: %#", userInfo);
completionHandler(UIBackgroundFetchResultNewData);
// 100 lines of code
}
My problem seems to be duplicate of this one,but it's not. While application is killed and not running in the background, if I receive push notification and clicked the notification banner, it works fine. "userInfo" isn't empty and application handles the notification. BUT if i dismiss the notification banner and open the app via clicking the application icon, this "userInfo" returns nil.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions: (NSDictionary *)launchOptions {
NSDictionary* userInfo = [launchOptions valueForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
if(userInfo != nil){
//Handling notification
}
}
and also
-(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler{
if([application applicationState] == UIApplicationStateActive) {
NSLog(#"...1");
}else if([application applicationState] == UIApplicationStateInactive){
NSLog(#"...2");
}else if([application applicationState] == UIApplicationStateBackground){
NSLog(#"...2");
}
completionHandler(UIBackgroundFetchResultNoData);
}
Is there any way to handle these notifications or should I handle them by my own ?
No your app is only informed about the notification that is used to open/launch your app.
There is no way to detect of there are any notification in the notification center for your app. You need to build this yourself in your apps server.
I am trying to implement the silent push notification for my background fetch.
Now i am facing an issue while implementing the necessary code in my AppDelegate.
Before i had the following function in order to handle the push notification:
-(void) application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
{
NSLog(#"Just Received a push!");
...
}
I added mow the below function to handle the background fetch silent notification:
//backgroundDownloadTask
- (void) application:(UIApplication *)application
didReceiveRemoteNotification:(NSDictionary *)userInfo
fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler
{
NSLog(#"Just Received a push!");
....
}
The weird thing is that when i receive a normal notification, it also entered the second function and the first one (old) is seems top be useless now, so I added the following to differenciate between the normal and silent one:
//backgroundDownloadTask
- (void) application:(UIApplication *)application
didReceiveRemoteNotification:(NSDictionary *)userInfo
fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler
{
NSLog(#"Just Received a push!");
NSDictionary *dict = [userInfo objectForKey:#"aps"];
if([dict objectForKey:#"content-available"])
{
//silent
}
else
{
//normal push
}
}
but the issue is when i am in the foreground and I receive a push, No function is executing as no push is received(Maybe because the second function is just for background).
So how am I able to handle both pushes? any idea ?
Thank you,
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 check for new message in AppDelegate class in 3 places, in didFinishLaunchingWithOptions:(NSDictionary *)launchOptions using code:
if (launchOptions != nil)
{
NSDictionary* dictionary = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
if (dictionary != nil)
{
//NSLog(#"Launched from push notification: %#", dictionary);
//notification pending ... so pull from server the new message
[self addMessageFromRemoteNotification:dictionary updateUI:YES];
}
}
and in didReceiveRemoteNotification:(NSDictionary*)userInfo using code:
// notification pending ... so pull from server the new message
[self addMessageFromRemoteNotification:userInfo updateUI:YES];
and in - (void)applicationDidBecomeActive:(UIApplication *)application using code
if(application.applicationIconBadgeNumber>0)
{
application.applicationIconBadgeNumber = 0;
// notification pending ... so pull from server the new message
[self openMessageViewForNewMessage];
}
However, still I notice there is some cases where my app still dont "catch" notification, meaning, it still not aware that it receive notification. Did I message something? or I should all the time check "my server" for new messages becouse app might not all the times be informed by iOS that there is new notification.
Quick overview...
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
Here you specify what kind of notifications you want your app to receive. For Example, if you want badge, sound and alert you would include this:
[[UIApplication sharedApplication] registerForRemoteNotificationTypes:(UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert)];
In the:
-(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
You can add something like this to make sure to update your badge:
NSString *badge = [apsInfo objectForKey:#"badge"];
application.applicationIconBadgeNumber = [badge intValue];
I personally also add this code and do my processing where appropriate:
[[NSNotificationCenter defaultCenter] postNotificationName:#"ReceivedNotificationAlert" object:self];
The above works well for all my apps. You mentioned there are some cases when your app misses APNs. Can you share exactly what kind of cases?