我有一个录制视频的应用。为了处理手机旋转,我有以下代码://calledonphonerotationAVCaptureConnection*previewLayerConnection=[[selfpreviewLayer]connection];if([previewLayerConnectionisVideoOrientationSupported]){[previewLayerConnectionsetVideoOrientation:[selfgetVideoOrientation]];}和getVideoOrientation函数:-(AVCaptureVideoOrien