iOS推送通知可在iOS 8上運行，但不能在iOS SDK 8.1中的iOS 7上運行

Question

if([application respondsToSelector:@selector(registerUserNotificationSettings:)]) { 

         [self registerForiOS8PushSettings]; //for iOS8  

    } else {
//iOS7 or earlier

     [[UIApplication sharedApplication] registerForRemoteNotificationTypes:(UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert)];

    }

無法獲得推送通知到iOS7設備。 didRegisterForRemoteNotificatiosnWithDeviceToken被調用，實際上消息已成功傳遞。 在iOS8上運作良好。

Answer 1

有了iOS8，過程發生了變化。 要使您的應用注冊iOS8和早期版本，請執行以下操作：

-(void)registerAppForNotifications{

    if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0)
    {
        [[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]];
        [[UIApplication sharedApplication] registerForRemoteNotifications];
    }
    else
    {
        [[UIApplication sharedApplication] registerForRemoteNotificationTypes: (UIRemoteNotificationTypeNewsstandContentAvailability| UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert)];
    }

}