设置通知侦听器

本主题介绍如何为云眼灰度发布（特性标帜）AB实验 Swift SDK 设置和删除通知侦听器。

通知侦听器触发您在 SDK 中触发某些操作时定义的回调函数。

最常见的用例是将所有灰度发布（特性标帜）决策的流发送到分析提供商或内部数据仓库，以将其与您拥有的有关用户的其他数据联接。

通知侦听器类型

有关通知侦听器类型和用例的更多信息，请参阅通知侦听器。

有关代码示例，请参阅以下部分。

添加和删除所有通知侦听器

下面的示例代码演示如何添加侦听器、删除侦听器、删除特定类型的所有侦听器（例如所有决策侦听器）以及删除所有侦听器。

Swift目标-C

// Add a notification listener let notificationId = eyeofcloud.notificationCenter.addDecisionNotificationListener(decisionListener: { (type, userId, attributes, decisionInfo) in // Send data to analytics provider here }) // Remove a specific listener eyeofcloud.notificationCenter.removeNotificationListener(notificationId: notificationId!) // Remove all Notification Listeners eyeofcloud.notificationCenter.clearAllNotificationListeners() // Remove all Notification Listeners of a certain type eyeofcloud.notificationCenter.clearNotificationListeners(type: .decision)

// Add a notification listener NSNumber *notificationId = [self.eyeofcloud.notificationCenter addDecisionNotificationListenerWithDecisionListener:^(NSString *type, NSString *userId, NSDictionary<NSString *,id> *attributes, NSDictionary<NSString *,id> *decisionInfo) { // Send data to analytics provider here }]; // Remove a specific listener [eyeofcloud.notificationCenter removeNotificationListenerWithNotificationId:notificationId]; // Remove all Notification Listeners [eyeofcloud.notificationCenter clearAllNotificationListeners]; // Remove all Notification Listeners of a certain type [eyeofcloud.notificationCenter clearNotificationListenersWithType:NotificationTypeDecision];

设置每种类型的通知侦听器

下面的示例代码演示如何设置每种类型的通知侦听器。

Swift目标-C

// SET UP DECISION NOTIFICATION LISTENER let onDecision : DecisionListener = {[weak self](decisionType, userId, attributes, decisionInfo) in // Add a DECISION Notification Listener for type FLAG if decisionType == "flag" { // Access information about feature, for example, key and enabled status print(decisionInfo["flagKey"]) print(decisionInfo["enabled"]) print(decisionInfo["decisionEventDispatched"]) } } self.eyeofcloudClient?.notificationCenter?.addDecisionNotificationListener(decisionListener: onDecision) // SET UP LOG EVENT NOTIFICATION LISTENER let onLogEvent : LogEventListener = {[weak self] (url, logEvent) in // process the logEvent object here (send to analytics provider, audit/inspect data) } self.eyeofcloudClient?.notificationCenter?.addLogEventNotificationListener(logEventListener: onLogEvent) // SET UP DATAFILE CHANGE NOTIFICATION LISTENER let onDatafileUpdate : DatafileChangeListener = {[weak self] (datafile) in } self.eyeofcloudClient?.notificationCenter?.addDatafileChangeNotificationListener(datafileListener: onDatafileUpdate) // SET UP TRACK LISTENER let onTrack : TrackListener = { [weak self](eventKey, userId, attributes, eventTags, event) in // process the event here (send to analytics provider, audit/inspect data) } self.eyeofcloudClient?.notificationCenter?.addTrackNotificationListener(trackListener: onTrack)

// SET UP ACTIVATE NOTIFICATION LISTENER (void)[self.eyeofcloudClient.notificationCenter addActivateNotificationListenerWithActivateListener:^(NSDictionary<NSString *,id> * _Nonnull experiment, NSString * _Nonnull userId, NSDictionary<NSString *,id> * _Nullable attributes, NSDictionary<NSString *,id> * _Nonnull variation, NSDictionary<NSString *,id> * _Nonnull event) { }]; // SET UP DECISION NOTIFICATION LISTENER (void)[self.eyeofcloudClient.notificationCenter addDecisionNotificationListenerWithDecisionListener: ^(NSString * _Nonnull decisionType, NSString * _Nonnull userId, NSDictionary<NSString *,id> * _Nullable attributes, NSDictionary<NSString *,id> * _Nonnull decisionInfo) { // Add a DECISION Notification Listener for type FEATURE if ([decisionType isEqualToString:@"feature"]) { // Access information about feature, for example, key and enabled status NSLog(decisionInfo[@"featureKey"]); NSLog(decisionInfo[@"featureEnabled"]); NSLog(decisionInfo[@"source"]); } }]; // SET UP LOG EVENT NOTIFICATION LISTENER (void)[self.eyeofcloudClient.notificationCenter addLogEventNotificationListenerWithLogEventListener:^(NSString * _Nonnull url, NSDictionary<NSString *,id> * _Nonnull logEvent) { // process the logEvent object here (send to analytics provider, audit/inspect data) }]; // SET UP DATAFILE CHANGE NOTIFICATION LISTENER (void)[self.eyeofcloudClient.notificationCenter addDatafileChangeNotificationListenerWithDatafileListener:^(NSData * _Nonnull datafile) { }]; // SET UP TRACK LISTENER (void)[self.eyeofcloudClient.notificationCenter addTrackNotificationListenerWithTrackListener:^(NSString * _Nonnull eventKey, NSString * _Nonnull userId, NSDictionary<NSString *,id> * _Nullable attributes, NSDictionary<NSString *,id> * _Nullable eventTags, NSDictionary<NSString *,id> * _Nonnull event) { // process the event here (send to analytics provider, audit/inspect data) }];