How to handle iOS remote notification while app is in background - ios

Question

I am working on iOS push notification functionality through apple push notification,right now i am getting proper notification while my app is in background or foreground,but i want to handle remote notification when my app is in background basically when my app is in background it is simply showing alert message from payload.Actually i just want to customize my remote notification.
code:
- (BOOL)application:(UIApplication )application didFinishLaunchingWithOptions:(NSDictionary )launchOptions {
// Override point for customization after application launch.
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0)
{
// [[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]];
[[UIApplication sharedApplication] registerForRemoteNotifications];
}
else
{
[[UIApplication sharedApplication] registerForRemoteNotificationTypes:
(UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert)];
}
return YES;
}
- (void)application:(UIApplication *)application
didFailToRegisterForRemoteNotificationsWithError:(NSError *)error
{
NSLog(#"Did Register for Remote Notifications with Device Token (%#)", error);
}
- (void)application:(UIApplication )application didRegisterForRemoteNotificationsWithDeviceToken:(NSData )deviceToken {
NSLog(#"Did Register for Remote Notifications with Device Token (%#)", deviceToken);
}
-(void)application:(UIApplication )application didReceiveRemoteNotification:(NSDictionary )userInfo fetchCompletionHandler:(void (UIBackgroundFetchResult))completionHandler
{
NSDictionary * aps=[userInfo valueForKey"aps"];
NSLog(#"did recevie %#",aps);
NSLog(#"userinfo details %#",[aps valueForKey"alert"]);
}

Answer 1

In iOS 10 first you have to set UNUserNotificationCenterDelegate in AppDelegate.h file
#interface AppDelegate : UIResponder <UIApplicationDelegate,CLLocationManagerDelegate,UNUserNotificationCenterDelegate>
After that in AppDelegate.m write code like this
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.1) {
// iOS 7.1 or earlier. Disable the deprecation warnings.
UIRemoteNotificationType allNotificationTypes =
(UIRemoteNotificationTypeSound |
UIRemoteNotificationTypeAlert |
UIRemoteNotificationTypeBadge);
[application registerForRemoteNotificationTypes:allNotificationTypes];
[[UIApplication sharedApplication] registerForRemoteNotifications];
} else {
// iOS 8 or later
// [START register_for_notifications]
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 9.0)
{
UIUserNotificationType allNotificationTypes =
(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge);
UIUserNotificationSettings *settings =
[UIUserNotificationSettings settingsForTypes:allNotificationTypes categories:nil];
[application registerForRemoteNotificationTypes:(UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound)];
[[UIApplication sharedApplication] registerUserNotificationSettings:settings];
[[UIApplication sharedApplication] registerForRemoteNotifications];
[application registerForRemoteNotifications];
} else {
// iOS 10 or later
#if defined(__IPHONE_10_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_10_0
UNAuthorizationOptions authOptions =
UNAuthorizationOptionAlert
| UNAuthorizationOptionSound
| UNAuthorizationOptionBadge;
[[UNUserNotificationCenter currentNotificationCenter]
requestAuthorizationWithOptions:authOptions
completionHandler:^(BOOL granted, NSError * _Nullable error) {
}
];
// For iOS 10 display notification (sent via APNS)
[[UNUserNotificationCenter currentNotificationCenter] setDelegate:self];
[[UIApplication sharedApplication] registerForRemoteNotifications];
return YES;
}
Now implement this method for below iOS10 version
- (void)application:(UIApplication *)application
didReceiveRemoteNotification:(NSDictionary *)userInfo
fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))handler {
NSLog(#"Notification received: %#", userInfo);
if( SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO( #"10.0" ) )
{
NSLog( #"iOS version >= 10. Let NotificationCenter handle this one." );
return;
}
NSLog( #"HANDLE PUSH, didReceiveRemoteNotification: %#", userInfo );
else{
handler( UIBackgroundFetchResultNewData );
}
}
Apple introduces these two methods in iOS10 to receive push notifications.
Write these methods also
// Receive displayed notifications for iOS 10 devices.
#if defined(__IPHONE_10_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_10_0
- (void)userNotificationCenter:(UNUserNotificationCenter *)center
willPresentNotification:(UNNotification *)notification
withCompletionHandler:(void (^)(UNNotificationPresentationOptions))completionHandler {
NSDictionary *userInfo = notification.request.content.userInfo;
NSLog(#"%#", userInfo);
completionHandler( UNNotificationPresentationOptionAlert );
}
-(void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void(^)())completionHandler{
NSLog(#"Userinfo %#",response.notification.request.content.userInfo);
// completionHandler(UNNotificationPresentationOptionAlert);
}
That's it.
Try this