AVSession Kit API Reference ArkTS APIs @ohos.multimedia.avsession (AVSession Management) @ohos.multimedia.avCastPickerParam (AVCastPicker Parameters) @ohos.app.ability.MediaControlExtensionAbility (ExtensionAbility for Media Playback Control) (System API) @ohos.multimedia.avsession (AVSession Management) (System API) application MediaControlExtensionContext (ExtensionAbility Context for Media Playback Control) (System API) ArkTS Components @ohos.multimedia.avCastPicker (AVCastPicker) Error Codes AVSession Management Error Codes