UIDevice *device = [UIDevice currentDevice];  switch (device.orientation;) {           case UIDeviceOrientationFaceUp:               NSLog(@"螢幕朝上平躺");               break;                           case UIDeviceOrientationFaceDown:               NSLog(@"螢幕朝下平躺");               break;                           //系統無法判斷目前Device的方向，有可能是斜置            case UIDeviceOrientationUnknown:               NSLog(@"未知方向");               break;                           case UIDeviceOrientationLandscapeLeft:               NSLog(@"螢幕向左橫置");              //imgView.transform = CGAffineTransformMakeRotation((CGFloat)(-90 * M_PI / 180.0));              break;                           case UIDeviceOrientationLandscapeRight:               NSLog(@"螢幕向右橫置");               //imgView.transform = CGAffineTransformMakeRotation((CGFloat)(90 * M_PI / 180.0));              break;                           case UIDeviceOrientationPortrait:               NSLog(@"螢幕直立");               break;                           case UIDeviceOrientationPortraitUpsideDown:               NSLog(@"螢幕直立，上下顛倒");               break;                           default:               NSLog(@"無法辨識");               break;       }