使用 UNUserNotificationCenter 后没有调用 didReceiveLocalNotification

Question

我正在安排本地通知。它适用于 iOS 9.x，但从 iOS 10 开始

-(void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification

当应用在 iOS 10 上运行时不会被调用。

我知道 iOS 引入了新的 UserNotifications 框架，但这不应该停止运行 iOS 9 API。

我该如何解决这个问题？

Answer 1

如您所知，iOS 10 引入了UNUserNotifications 框架来处理本地和远程通知。使用此框架，您可以设置一个委托来检测何时呈现或点击通知。

[UNUserNotificationCenter currentNotificationCenter].delegate = yourDelegate;

...

// In your delegate ...

- (void)userNotificationCenter:(UNUserNotificationCenter *)center
       willPresentNotification:(UNNotification *)notification
         withCompletionHandler:(void (^)(UNNotificationPresentationOptions))completionHandler {

    // Notification arrived while the app was in foreground

    completionHandler(UNNotificationPresentationOptionAlert);
    // This argument will make the notification appear in foreground
}

- (void)userNotificationCenter:(UNUserNotificationCenter *)center
didReceiveNotificationResponse:(UNNotificationResponse *)response
         withCompletionHandler:(void (^)())completionHandler {

    // Notification was tapped.

    completionHandler();
}

现在，如果您仍想使用旧的（已弃用）application:didReceiveLocalNotification 和 application:didReceiveRemoteNotification:fetchCompletionHandler，解决方案很简单：只需不要将任何委托设置为 UNUserNotificationCenter。

请注意，即使您设置了委托，静默远程通知（包含content-available 键且不包含alert、sound 或badge 的通知）始终由application:didReceiveRemoteNotification:fetchCompletionHandler 处理。