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Sound control

Stories can contain videos for which the playback function with sound is enabled. For such cards, a sound switch button is displayed in the bottom panel. Audio playback is disabled by default

Button customization​

To change the sound button icons, you need to set the images in the soundImage and soundSelectedImage parameters at InAppStory

AppDelegate.swift​

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool
{
    // library initialization
    InAppStory.shared.initWith(serviceKey: <String>)

    // settings can also be specified at any time before creating a StoryView or calling individual stories
    InAppStory.shared.settings = Settings(userID: <String>, tags: <Array<String>>)

    // Change sound button icons
    InAppStory.shared.soundImage = <UIImage> // Sound on
    InAppStory.shared.soundSelectedImage = <UIImage> // Sound off

    return true
}

Control​

By default, the sound in the story is turned off, this can be changed by setting the InAppStory parameter muted with the required value.

ViewController.swift​

...

func changeSound(value: Bool) {
    InAppStory.shared.muted = value
}
...

Remark
If you specify muted while a story with sound is open, the sound will stop or start, depending on the value passed. So you can control the sound from the application that has a built-in library.