ZegoAVEngineDelegate Protocol Reference Conforms to NSObject Declared in ZegoLiveRoomApi.h – onAVEngineStart required method 音视频引擎开始时回调 - (void)onAVEngineStart Declared In ZegoLiveRoomApi.h – onAVEngineStop required method 音视频引擎停止时回调 - (void)onAVEngineStop Declared In ZegoLiveRoomApi.h