// tableView 偏移20/64适配
if(@available(iOS11.0, *)) {
self.tableView.contentInsetAdjustmentBehavior=UIScrollViewContentInsetAdjustmentNever;//UIScrollView也适用
}else{
self.automaticallyAdjustsScrollViewInsets=NO;
}
// tableView 偏移20/64适配
if(@available(iOS11.0, *)) {
self.tableView.contentInsetAdjustmentBehavior=UIScrollViewContentInsetAdjustmentNever;//UIScrollView也适用
}else{
self.automaticallyAdjustsScrollViewInsets=NO;
}