Automatically log push opened event on card view appear.

iOS/FBNotifications/FBNotifications/FBNCardViewController.m

@@ -36,7 +36,7 @@
 
 @interface FBNCardViewController () <FBNCardActionsViewDelegate>
 
-@property (nonatomic, copy, readonly) NSString *campaignIdentifier;
+@property (nullable, nonatomic, copy, readonly) NSString *campaignIdentifier;
 @property (nonatomic, strong, readonly) FBNAssetsController *assetsController;
 
 @property (nonatomic, strong) FBNCardConfiguration *configuration;
@@ -76,6 +76,24 @@ - (instancetype)initWithPushCardPayload:(FBNCardPayload *)payload
 
 - (void)dealloc {
     [self.dismissButton removeTarget:nil action:nil forControlEvents:UIControlEventAllEvents];
+    [[NSNotificationCenter defaultCenter] removeObserver:self];
+}
+
+///--------------------------------------
+#pragma mark - View
+///--------------------------------------
+
+- (void)viewDidAppear:(BOOL)animated {
+    [super viewDidAppear:animated];
+
+    if ([UIApplication sharedApplication].applicationState != UIApplicationStateBackground) {
+        [self _logPushOpen];
+    } else {
+        [[NSNotificationCenter defaultCenter] addObserver:self
+                                                 selector:@selector(_applicationWillEnterForeground)
+                                                     name:UIApplicationWillEnterForegroundNotification
+                                                   object:nil];
+    }
 }
 
 ///--------------------------------------
@@ -246,6 +264,23 @@ - (void)viewWillLayoutSubviews {
     self.loadingIndicatorView.center = CGPointMake(CGRectGetMidX(bounds), CGRectGetMidY(bounds));
 }
 
+///--------------------------------------
+#pragma mark - Application State Changes
+///--------------------------------------
+
+- (void)_applicationWillEnterForeground {
+    [self _logPushOpen];
+    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIApplicationWillEnterForegroundNotification object:nil];
+}
+
+///--------------------------------------
+#pragma mark - Logging Events
+///--------------------------------------
+
+- (void)_logPushOpen {
+    [FBNCardAppEventsLogger logCardOpenWithCampaignIdentifier:self.campaignIdentifier];
+}
+
 ///--------------------------------------
 #pragma mark - Dismiss
 ///--------------------------------------

iOS/FBNotifications/FBNotifications/Internal/AppEvents/FBNCardAppEventsLogger.h

@@ -26,7 +26,8 @@ NS_ASSUME_NONNULL_BEGIN
 
 + (nullable NSString *)campaignIdentifierFromRemoteNotificationPayload:(NSDictionary *)payload;
 
-+ (void)logButtonAction:(FBNCardButtonAction)action forCardWithCampaignIdentifier:(NSString *)identifier;
++ (void)logCardOpenWithCampaignIdentifier:(nullable NSString *)identifier;
++ (void)logButtonAction:(FBNCardButtonAction)action forCardWithCampaignIdentifier:(nullable NSString *)identifier;
 
 @end
 

iOS/FBNotifications/FBNotifications/Internal/AppEvents/FBNCardAppEventsLogger.m

@@ -36,24 +36,34 @@ + (nullable NSString *)campaignIdentifierFromRemoteNotificationPayload:(NSDictio
     return payload[@"fb_push_payload"][@"campaign"];
 }
 
-+ (void)logButtonAction:(FBNCardButtonAction)action forCardWithCampaignIdentifier:(NSString *)identifier {
++ (void)logCardOpenWithCampaignIdentifier:(nullable NSString *)identifier {
     if (!identifier) {
         return;
     }
+    [self _logAppEventWithName:@"fb_mobile_push_opened" campaignIdentifier:identifier];
+}
 
-    Class loggerClass = NSClassFromString(@"FBSDKAppEvents");
-    if (loggerClass && [loggerClass respondsToSelector:@selector(logEvent:parameters:)]) {
-        NSString *eventName = [self _appEventNameForButtonAction:action];
-        if (eventName) {
-            [loggerClass logEvent:eventName parameters:@{ @"fb_push_campaign" : identifier }];
-        }
-    }
++ (void)logButtonAction:(FBNCardButtonAction)action forCardWithCampaignIdentifier:(nullable NSString *)identifier {
+    NSString *eventName = [self _appEventNameForButtonAction:action];
+    [self _logAppEventWithName:eventName campaignIdentifier:identifier];
 }
 
 ///--------------------------------------
 #pragma mark - Private
 ///--------------------------------------
 
++ (void)_logAppEventWithName:(NSString *)name campaignIdentifier:(NSString *)identifier {
+    if (!identifier) {
+        return;
+    }
+
+    Class loggerClass = NSClassFromString(@"FBSDKAppEvents");
+    if (loggerClass && [loggerClass respondsToSelector:@selector(logEvent:parameters:)]) {
+        [loggerClass logEvent:name
+                   parameters:@{ @"fb_push_campaign" : identifier }];
+    }
+}
+
 + (nullable NSString *)_appEventNameForButtonAction:(FBNCardButtonAction)action {
     switch (action) {
         case FBNCardButtonActionPrimary: