IOS UITableView dynamically changing the height of Tableheaderview

Project needs to display some content at the top of the TableView, we can easily use Tableheaderview to achieve, but sometimes need to dynamically adjust the height of tableheaderview, we will find that even if the height of the header reset, frame, etc. , but the actual headerview height does not change, it can be seen that simply setting the header frame is useful for wood.

To change the height of a headerview dynamically, it's very simple:

UIView *headerview = _tableview.tableheaderview;
headerview.height = 0;
[_tableview beginupdates];
[_tableview settableheaderview:headerview];//Key is this sentence
[_tableview endupdates];

[_tableview beginupdates];

[_tableview endupdates];

These two words can make the transition have animation effect