how to set constraints to tableview in swift

Question

I have searched SO, but could not find any helpful answer.

I have a storyboard with three (3) textfields, to these textfields I want to make autocomplete textfields.

Am creating tableviews like this

let tblNumbers = UITableView(frame: CGRectMake(16,140,74,200), style: UITableViewStyle.Plain)
var arrStrNo = [String]()
var arrStrNum = [String]()

let tblYears = UITableView(frame: CGRectMake(120,140,74,200), style: UITableViewStyle.Plain)
var arrStrYr = [String]()
var arrStrYears = [String]()

let tblType = UITableView(frame: CGRectMake(222,140,74,200), style: UITableViewStyle.Plain)
var arrStrTyp = [String]()
var arrStrType = [String]()

So programmatically am showing tableviews to just below textfields in shouldChangeCharactersInRange.

table.reloadData()

In storyboard am setting constraints to textfields, now am wondering how can I set constraints to these tableviews, so it should be exactly below the textfields in all size screens.

Programmitically, am trying like below to set constraints to tableviews in viewDidLoad method but its not working

func setConstraintsToYearTableView(){

        let topConstraint = NSLayoutConstraint(item: self.tblYears, attribute: NSLayoutAttribute.Top, relatedBy: NSLayoutRelation.Equal, toItem: self.view, attribute: NSLayoutAttribute.Top, multiplier: 1.0, constant: 190)
        let leadingContraint = NSLayoutConstraint(item: self.tblYears, attribute: NSLayoutAttribute.Leading, relatedBy: NSLayoutRelation.Equal, toItem: self.view, attribute: NSLayoutAttribute.Leading, multiplier: 1.0, constant: 120)
        let trailingConstraint = NSLayoutConstraint(item: self.tblYears, attribute: NSLayoutAttribute.Trailing, relatedBy: NSLayoutRelation.Equal, toItem: self.view, attribute: NSLayoutAttribute.Trailing, multiplier: 1.0, constant: 0)
        let bottomConstraint = NSLayoutConstraint(item: self.tblYears, attribute: NSLayoutAttribute.Bottom, relatedBy: NSLayoutRelation.Equal, toItem: self.view, attribute: NSLayoutAttribute.Bottom, multiplier: 1.0, constant: 0)

        NSLayoutConstraint.activateConstraints([topConstraint, leadingContraint, trailingConstraint, bottomConstraint])

}

Use only single tableView, and change dataSource according to your need. Pin tableView in storyboard it self. — Mohammad Zaid Pathan, Dec 14 '16 at 10:06
but i want to have tableview under three textfields, my question is "how to set constraints to tableview programmatically" ? — Abdul Rafay, Dec 14 '16 at 10:09
Yes you can pin tableView's top from textField's bottom then update that constraint to negative value, so tableView will go under textField. — Mohammad Zaid Pathan, Dec 14 '16 at 10:11
Am new to iOS,swift, can you provide any sample code. i will be very thankfull for that — Abdul Rafay, Dec 14 '16 at 10:12
You can check sample code from here : http://stackoverflow.com/a/26181982/5580393 i hope it will help — Aditya, Dec 14 '16 at 11:05
yeah tried that. but could not achieve required functionality — Abdul Rafay, Dec 14 '16 at 12:14
place only single tableview in storyboard and don't assign any constraint, now when user click on text field set tableview frame programmatically bellow the textfiled according to textfield's frame. — Pankaj K., Dec 24 '16 at 09:54

how to set constraints to tableview in swift

0 Answers0