爲什麼didReceiveRemoteNotification：fetchCompletionHandler被調用，但通常didReceiveRemoteNotification不是？

Question

在我的應用程序中，我有兩種類型的推送通知：帶有content-available = 1標誌的遠程安全通知以及帶有body，badge和其他內容的常規推送通知。

我還定義了兩個代表方法didReceiveRemoteNotification:fetchCompletionHandler和通常的didReceiveRemoteNotification。

但是，如果沒有content-available標誌的推送通知到達didReceiveRemoteNotification:fetchCompletionHandler被調用，而不是didReceiveRemoteNotification。

如何解決這個問題？
爲什麼我不能有兩個委託方法用於背景和通常的推送？

Answer 1

的iOS 7只調用新的，這是我如何處理它在我的應用程序：

-(void) application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo { 

    // Pass on 
    [self application:application didReceiveRemoteNotification:userInfo fetchCompletionHandler:nil]; 

} 

-(void) application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler { 

    // Check if in background 
    if ([UIApplication sharedApplication].applicationState == UIApplicationStateInactive) { 

     // User opened the push notification 

    } else { 

     // User hasn't opened it, this was a silent update 

    } 

}