CODEWITHSUNDEEP
iosswiftuitableviewuitextview
Nitesh
Nitesh

Reputation: 2034

Dynamic TextView height in TableView

I'm having TextView inside my TableView and its height has to be increased according to content. I'm doing it by this

override func viewDidLoad() {
    super.viewDidLoad()

    tableView.estimatedRowHeight = 70
    tableView.rowHeight = UITableViewAutomaticDimension
    textView.delegate = self
    textView.text = "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."

}
extension TableViewController: UITextViewDelegate {
  func textViewDidChange(_ textView: UITextView) {
    let currentOffset = tableView.contentOffset
    UIView.setAnimationsEnabled(false)
    tableView.beginUpdates()
    tableView.endUpdates()
    UIView.setAnimationsEnabled(true)
    tableView.setContentOffset(currentOffset, animated: false)
  }
}

TableView are having static cells. Have given Constraints to the TextView properly. My main concern over here is the delegate of textView is not getting called. I have added breakpoint to check it.

Upvotes: 0

Views: 400

Answers (1)

BEN MESSAOUD Mahmoud
BEN MESSAOUD Mahmoud

Reputation: 736

When manually setting the text of a UITextView with code, the textViewDidChange: method does not get called. (If you have your text view's delegate set, it will get called when the user edits it, though.)

One possible workaround would be to manually call textViewDidChange: anytime you edit the text. For example:

textView.delegate = self
textView.text = "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."
self.textViewDidChange(self.textView)

Kind of a hackish way of doing it, but it gets the job done

Hope this help you.

Edit

try this it's work for me 

class TableViewController: UITableViewController {

@IBOutlet weak var textView: UITextView!
override func viewDidLoad() {
    super.viewDidLoad()
    tableView.estimatedRowHeight = 70
    tableView.rowHeight = UITableViewAutomaticDimension
    textView.delegate = self
    textView.text = "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."
    self.textViewDidChange(self.textView)
}

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

override func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
    return 70
}
override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
    if indexPath.item == 1{//****Or index of your textView****
        return textView.contentSize.height;
    }
    return 70

}

}

extension TableViewController: UITextViewDelegate {
func textViewDidChange(_ textView: UITextView) {
        tableView.reloadData()
       }
}

Update

class TableViewController: UITableViewController {

@IBOutlet weak var textView: UITextView!
override func viewDidLoad() {
    super.viewDidLoad()
    tableView.estimatedRowHeight = 70
    tableView.rowHeight = UITableViewAutomaticDimension
    textView.delegate = self
    textView.text = "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."
    self.textViewDidChange(self.textView)
    tableView.reloadData()

}

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

override func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
    return 70
}
override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
    if indexPath.item == 0{//****Or index of your textView****
        return textView.contentSize.height;
    }
    return 70

}

}

extension TableViewController: UITextViewDelegate {
func textViewDidChange(_ textView: UITextView) {

}

func textViewDidEndEditing(_ textView: UITextView) {
    tableView.reloadData()
}
}

Upvotes: 1

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