IOS: Make head view scroll with table view

To make the TableView head view scroll through the presentation diagram, you need to use the grouping style of the set TableView_tableview = [[UITableViewAlloc]initWithFrame: Self.View.boundsstyle:uitableviewstylegrouped];If you group as a group, directly customize the header view, and then set the Headerview to TableView,If there are multiple groups, some groups require a header view, some groups do not need to have the head view of the normal set head view height, do not need to return 0.01, if nil is returned, will be ignored by the system, and then return a default height

IOS: Make head view scroll with table view