iphone - 推沃什 : Swift Code

Question

我在下面使用了 push whoosh swift 代码，但它崩溃了。

        if(UIApplication.instancesRespondToSelector(Selector("registerUserNotificationSettings:")))
        {
            application.registerUserNotificationSettings(UIUserNotificationSettings(forTypes: UIUserNotificationType.Sound | UIUserNotificationType.Alert | UIUserNotificationType.Badge, categories: nil))
        }
        else //iOS7
        {
            application.registerForRemoteNotificationTypes( UIRemoteNotificationType.Badge |
                UIRemoteNotificationType.Sound |
                UIRemoteNotificationType.Alert )
        }

     var pushManager:PushNotificationManager  = PushNotificationManager.pushManager();
    pushManager.delegate = self;

    // handling push on app start
    PushNotificationManager.pushManager().handlePushReceived(launchOptions);

    // make sure we count app open in Pushwoosh stats
    PushNotificationManager.pushManager().sendAppOpen();

    // register for push notifications!
    PushNotificationManager.pushManager().registerForPushNotifications();

    UIApplication.sharedApplication().applicationIconBadgeNumber = 1;
    UIApplication.sharedApplication().applicationIconBadgeNumber = 0;

这是屏幕截图:

错误:EXE_BAD_INSTRUCTION for var pushManager:PushNotificationManager = PushNotificationManager.pushManager()

Answer 1

除非您按照 the documentation 中的这些重要步骤进行操作:

1. Add Pushwoosh.framework to your project.

2. Add -ObjC flag to the Linker Flags in your project.

3. In your Info.plist add the following key Pushwoosh_APPID with your Pushwoosh Application ID string value

...那么您的问题很可能是 PushNotificationManager.pushManager() 正在返回 nil，当您尝试分配结果为非可选值。