If you use AVFoundation playback or recording objects, some of these steps are handled automatically by the system. Table summarizes how to handle audio interruptions according to technology.
The rest of this chapter provides details. The system automatically pauses playback or recording upon interruption and reactivates your audio session when you resume playback or recording. If you want to save and restore the playback position between app launches, save the playback position on interruption as well as on app quit. These technologies put your app in control of handling interruptions.
You are responsible for saving playback or recording position and for reactivating your audio session after the interruption ends. Sounds played using System Sound Services go silent when an interruption starts. The sounds are eligible to be played again if the interruption ends. Apps cannot influence the interruption behavior for sounds that use this playback technology. During the interruption, keep track of any commands issued by Siri and respond accordingly when the interruption ends.
When your app is notified that the interruption has ended, it should not automatically resume playing. To handle audio interruptions, begin by registering to observe notifications of type AVAudioSessionInterruptionNotification. The posted NSNotification instance contains a populated userInfo dictionary providing the details of the interruption.
OTHER WORDS FROM interruption
The interruption type indicates whether the interruption has begun or has ended. An options value of AVAudioSessionInterruptionOptionShouldResume is a hint that indicates whether your app should automatically resume playback if it had been playing when it was interrupted. Media playback apps should always look for this flag before beginning playback after an interruption. The media server provides audio and other multimedia functionality through a shared server process.
After receiving the notification, your app needs to do the following:.
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Dispose of orphaned audio objects such as players, recorders, converters, or audio queues and create new ones. Reset any internal audio states being tracked, including all properties of AVAudioSession.nirighcartfebvword.ga
Audio Session Programming Guide
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