Add a button that scrolls with a UITableView in Swift - ios

Question

I am trying to make a UIButton (or tappable UIView) appear above a UITableView. That is easy. The hard part is making it scroll when the user scrolls down the table view.
I have tried using a UIScrollView like so:
private var scroll = UIScrollView();
private var table = UITableView();
override func viewDidLoad()
{
super.viewDidLoad()
scroll = UIScrollView(frame: CGRect(x: 0, y: 0, width: self.view.frame.width, height: self.view.frame.height));
table = UITableView(frame: CGRect(x: 0, y: 0, width: self.view.frame.width, height: self.view.frame.height));
table.register(ATableCell.self, forCellReuseIdentifier: "reuseIdentifier");
table.contentInset = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0);
table.backgroundColor = UIColor.clear;
table.separatorInset = .zero;
table.layoutMargins = UIEdgeInsets(top: 0, left: 10, bottom: 0, right: 10);
table.rowHeight = UITableViewAutomaticDimension;
// table.estimatedRowHeight = 100;
table.dataSource = self;
table.delegate = self;
scroll.addSubview(table);
self.view.addSubview(table);
}
The scrollbar space at the top can hold a button but will always be there. I want it to stay above the table view but be out of focus when the user scrolls down (like a web page or like the standard mail app in the iphone which does this with the search bar and a table view). Thanks.

Answer 1

You can use the following 2 approaches to add a button above your tableview:
1. Section Header:
Add a section header in your top most section of your tableview. Do not forget to change the UITableViewStyle to plain or else the section header will stick on top.
2. Table Header View:
Add a tableHeaderView and place anything you want here. It will scroll as you scroll the tableview.
Hope it helps.

Answer 2

You can detect scrolling of UITableView using delegate method, where you can set position of UIButton so it can move according to your UITableView scrolling.
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView {
if (scrollView == myTableView){
// Your code here.....
}
}