Set TableView height by the number or rows

Question

I have got TableView in the MainstoryBoard and the number of rows is random every time. I want the height of the whole TableView to be flexible - by that I mean, for example: if I got 4 rows in the TableView and each TableView row height is 22 so the TableView height will be 88. Another example: number of rows: 2 row height = 22 TableView will be 44.

How can I make it?

Answer 1

You can change the UITableView height as per the contentSize as below:

Swift 2.2

tableView.frame = CGRectMake(tableView.frame.origin.x, tableView.frame.origin.y, tableView.frame.size.width, tableView.contentSize.height)

Swift 3 or 4+

tableView.frame = CGRect(x: tableView.frame.origin.x, y: tableView.frame.origin.y, width: tableView.frame.size.width, height: tableView.contentSize.height)

and make sure you write the above line in viewDidAppear method

You need to write the above line in viewDidLayoutSubviews also.

Swift 2.2

func viewDidLayoutSubviews(){
     tableView.frame = CGRectMake(tableView.frame.origin.x, tableView.frame.origin.y, tableView.frame.size.width, tableView.contentSize.height)
     tableView.reloadData()
}

Swift 3 or 4+

func viewDidLayoutSubviews(){
     tableView.frame = CGRect(x: tableView.frame.origin.x, y: tableView.frame.origin.y, width: tableView.frame.size.width, height: tableView.contentSize.height)
     tableView.reloadData()
}

Answer 2

Take outlet of the Height Constraint of the parent view and assign it the height of table view's content + constant(extra height of other contents in the view)

heightConstraintView.constant = tableView.contentSize.height + constantValue //use the value of constant as required.

and write this code in the cellForRowAt method.