MPVolumeView does not show route button on launch
问题 iOS 9.1 - iPhone 6S MPVolumeView's route button (airplay) is not showing when app launches even when there are wireless routes available. I have tried querying my MPVolumeView after it has been created to check for wireless routes and I get 0. I'm only able to get 1 (and have the route button appear) by disabling and enabling WiFi to trigger a notification. The MPVolumeView in my app is to control the volume of videos played from UIWebView. Also, whenever I activate a wireless route for