[英]UNNotificationContentExtension does not update its default content footer when a new notification arrives
我有一個通知內容擴展的實現,它在打開時使用 iOS 提供的默認通知內容(底部的兩個文本行):
問題是當UNNotificationContentExtension
打開時UNNotificationContentExtension
新通知時,頁腳的標題和正文字符串不會更新。 我已經檢查過UNNotification
didReceive()
方法是否被再次正確調用,並且傳遞的UNNotification
具有正確的更新信息(參數notification.request.content.body
和notification.request.content.title
)。 然而,操作系統似乎只是簡單地忽略了它們,即使我們可以毫無問題地更新內容本身,底部的文本也保持不變。
是否可以強制更新默認內容? 似乎沒有我們可以使用的任何參數和/或方法...
提前感謝您的任何回復。
編輯:我還應該補充一點,通知是在本地生成的(APN 尚未激活)。 代碼如下所示:
UNMutableNotificationContent *notificationContent = [UNMutableNotificationContent new];
notificationContent.categoryIdentifier = @"my.notification.category";
notificationContent.title = @"My notification title";
notificationContent.body = @"My notification body";
UNNotificationRequest *request = [UNNotificationRequest requestWithIdentifier:notificationUUID
content:notificationContent
trigger:notificationTrigger];
UNUserNotificationCenter *notificationCenter = [UNUserNotificationCenter currentNotificationCenter];
[notificationCenter addNotificationRequest:request withCompletionHandler:nil];
您需要實現UNNotificationServiceExtension擴展一樣UNNotificationContentExtension。 然后在 didReceive 方法中您可以訪問您的有效負載並更新它。
didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent)
將在通知內容擴展的方法之前調用。
class NotificationService: UNNotificationServiceExtension {
var contentHandler: ((UNNotificationContent) -> Void)?
var bestAttemptContent: UNMutableNotificationContent?
override func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) {
self.contentHandler = contentHandler
bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent)
if let bestAttemptContent = bestAttemptContent {
// Modify the notification content here...
bestAttemptContent.title = "\(bestAttemptContent.title) [modified]"
contentHandler(bestAttemptContent)
}
}
override func serviceExtensionTimeWillExpire() {
// Called just before the extension will be terminated by the system.
// Use this as an opportunity to deliver your "best attempt" at modified content, otherwise the original push payload will be used.
if let contentHandler = contentHandler, let bestAttemptContent = bestAttemptContent {
contentHandler(bestAttemptContent)
}
}
}
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