UITableView+textView+dynamicCellHeight.swift

//
//  Created by Egzon Pllana on 5/15/20.
//  Copyright © 2020 Native Coders. All rights reserved.
//

import UIKit

class HomeTableViewController: UITableViewController {

    // MARK: - Outlets

    @IBOutlet weak var commentTextView: UITextView!

    // MARK: - View lifecycle

    override func viewDidLoad() {
        super.viewDidLoad()

        /* Dynamic height with UITextView
        // commentTextView should not have height constraint
        // commentTextView must have top and bottom constraint connected to cell view
        // Disable textView scroll to enable auto layout
         */
        tableView.estimatedRowHeight = 150
        commentTextView.isScrollEnabled = false
    }
}

// MARK: - Table view data source
extension HomeTableViewController {
    override func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }

    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return 1
    }

    override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
        return UITableView.automaticDimension
    }
}

// MARK: - Text view delegates
extension HomeTableViewController: UITextViewDelegate {
    func textViewDidChange(_ textView: UITextView) {
        // Refresh tableView cell
        // Animated height update
        DispatchQueue.main.async {
            self.tableView?.beginUpdates()
            self.tableView?.endUpdates()
        }
    }
}