objective C FCM how to get remote message when app in background - objective-c

Question

my code can get remote notification and remote message, the last problem is can not getting remote message when app in background ( just open app then got it)
When i push remote notification and app in background, it's seem notification message show like expect, click to this notification then it bring me to my app. I dont know why remote message does not have some behavior like that( I using postman and "https://fcm.googleapis.com/fcm/send" to send remote message)
. Plz someone help me
Here is my code
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Register for remote notifications
if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_7_1) {
// iOS 7.1 or earlier. Disable the deprecation warnings.
UIRemoteNotificationType allNotificationTypes =
(UIRemoteNotificationTypeSound |
UIRemoteNotificationTypeAlert |
UIRemoteNotificationTypeBadge);
[application registerForRemoteNotificationTypes:allNotificationTypes];
} else {
// iOS 8 or later
// [START register_for_notifications]
if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_9_x_Max) {
UIUserNotificationType allNotificationTypes =
(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge);
UIUserNotificationSettings *settings =
[UIUserNotificationSettings settingsForTypes:allNotificationTypes categories:nil];
[[UIApplication sharedApplication] registerUserNotificationSettings:settings];
} else {
// iOS 10 or later
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];
// For iOS 10 data message (sent via FCM)
[[FIRMessaging messaging] setRemoteMessageDelegate:self];
}
[[UIApplication sharedApplication] registerForRemoteNotifications];
// [END register_for_notifications]
}
// [START configure_firebase]
[FIRApp configure];
// [END configure_firebase]
// Add observer for InstanceID token refresh callback.
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(tokenRefreshNotification:)
name:kFIRInstanceIDTokenRefreshNotification object:nil];
return YES;
}
// [START receive_message]
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {
// If you are receiving a notification message while your app is in the background,
// this callback will not be fired till the user taps on the notification launching the application.
// TODO: Handle data of notification
// Print message ID.
NSLog(#"didReceiveRemoteNotification1 ID: %#", userInfo[#"gcm.message_id"]);
// Print full message.
NSLog(#"didReceiveRemoteNotification1 %#", userInfo);
}
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler {
// If you are receiving a notification message while your app is in the background,
// this callback will not be fired till the user taps on the notification launching the application.
// TODO: Handle data of notification
// Print message ID.
NSLog(#"didReceiveRemoteNotification2 ID: %#", userInfo[#"gcm.message_id"]);
// Print full message.
NSLog(#"didReceiveRemoteNotification2 %#", userInfo);
}
- (void)userNotificationCenter:(UNUserNotificationCenter *)center
willPresentNotification:(UNNotification *)notification
withCompletionHandler:(void (^)(UNNotificationPresentationOptions))completionHandler {
// Print message ID.
NSDictionary *userInfo = notification.request.content.userInfo;
NSLog(#"willPresentNotification: %#", userInfo[#"gcm.message_id"]);
// Print full message.
NSLog(#"willPresentNotification %#", userInfo);
}
- (void)userNotificationCenter:(UNUserNotificationCenter *)center
didReceiveNotificationResponse:(UNNotificationResponse *)response
withCompletionHandler:(void (^)())completionHandler {
NSDictionary *userInfo = response.notification.request.content.userInfo;
NSLog(#"didReceiveNotificationResponse: %#", userInfo);
}
- (void)applicationReceivedRemoteMessage:(FIRMessagingRemoteMessage *)remoteMessage {
NSLog(#"%#", [remoteMessage appData]);
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Alert" message:[NSString stringWithFormat:#"%#", [remoteMessage appData]] delegate:self cancelButtonTitle:#"Cancel" otherButtonTitles:#"Ok", nil];
[alert show];
}
- (void)tokenRefreshNotification:(NSNotification *)notification {
NSString *refreshedToken = [[FIRInstanceID instanceID] token];
NSLog(#"InstanceID token: %#", refreshedToken);
[self connectToFcm];
}
- (void)connectToFcm {
[[FIRMessaging messaging] connectWithCompletion:^(NSError * _Nullable error) {
if (error != nil) {
NSLog(#"Unable to connect to FCM. %#", error);
} else {
NSLog(#"Connected to FCM.");
}
}];
}
- (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error {
NSLog(#"Unable to register for remote notifications: %#", error);
}
- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {
NSLog(#"APNs token retrieved: %#", deviceToken);
[[FIRMessaging messaging] setAPNSToken:deviceToken];
}
- (void)applicationDidBecomeActive:(UIApplication *)application {
[self connectToFcm];
}
- (void)applicationDidEnterBackground:(UIApplication *)application {
[[FIRMessaging messaging] disconnect];
NSLog(#"Disconnected from FCM");
}

Answer 1

For other people who face same problem.
Finally after a lot of searching, i found the solution, very simple, u need to follow the content of firebase app message to make it readable by push notification service. U can see here
and here
this is sample to make it show to device when in background mode :)
{
"condition": "'condition1' in topics && 'condition2' in topics",
"notification": {
"category": "notification_category",
"title_loc_key": "notification_title",
"body_loc_key": "notification_body",
"badge": 1
},
"data": {
"data_type": "notification_data_type",
"data_id": "111111",
"data_detail": "FOO",
"data_detail_body": "BAR"
}
}
Now everything work like expect, then the second job is just modify message content like whatever u want :)