iOS 8 : Sound setting doesn't work for UIUserNotificationType

Question

我正在尝试本地通知演示，在我的 iPhone 中，除了声音之外，角标(Badge)和警报通知效果很好。这是我的代码，

class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?

       func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject : AnyObject]?) -> Bool {

            let notificationType = UIUserNotificationType.Alert | UIUserNotificationType.Badge | UIUserNotificationType.Sound
            let settings = UIUserNotificationSettings(forTypes: notificationType, categories: nil)
            application.registerUserNotificationSettings(settings)

            application.applicationIconBadgeNumber = 0  // resetting the badge number to again 0

            return true
        }

        func application(application: UIApplication, didReceiveLocalNotification notification: UILocalNotification) {

            application.applicationIconBadgeNumber = 0  //resetting the badge number to again 0

        }

这是主视图 Controller 代码片段

class ViewController: UIViewController {


    @IBAction func startNotification(sender: UIButton) {

        var localNotification = UILocalNotification()
        localNotification.fireDate = NSDate(timeIntervalSinceNow: 5)  // notification will be sent after 5 seconds from clicking
        localNotification.alertBody = "Notification came"
        localNotification.timeZone = NSTimeZone.defaultTimeZone() // Time zone of the notfication's fire date
        localNotification.applicationIconBadgeNumber = UIApplication.sharedApplication().applicationIconBadgeNumber + 1 //The number to diplay on the icon badge. We will increment this number by one.

        UIApplication.sharedApplication().scheduleLocalNotification(localNotification) // scheduling the notification

    }

注意:即使我进入设置--> demoApp-->通知并启用警报、角标(Badge)和声音，即使这样也没有发生声音通知

如有任何帮助，我们将不胜感激。

Answer 1

尝试在模拟器上测试它吗？如果它在模拟器中工作，但在设备中不起作用，请确保静音开关未打开