if #available(iOS 11.0, *) {
self.videoCollectionView.contentInsetAdjustmentBehavior = .never
}else{
self.automaticallyAdjustsScrollViewInsets = false//往下偏移20(電池條的高度)
}
if #available(iOS 11.0, *) {
self.videoCollectionView.contentInsetAdjustmentBehavior = .never
}else{
self.automaticallyAdjustsScrollViewInsets = false//往下偏移20(電池條的高度)
}