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| // | |
| // BadTableViewController.swift | |
| // TableViewMemoryManagement | |
| // | |
| // Created by Nicholas Swift on 1/24/17. | |
| // Copyright © 2017 Nicholas Swift. All rights reserved. | |
| // | |
| import UIKit | |
| class BadTableViewController: UIViewController { | |
| // MARK: - Instance Vars | |
| @IBOutlet weak var tableView: UITableView! | |
| // NOTE: - Creating a var to hold all cells is bad, takes up too much memory | |
| var cells: [UITableViewCell] = [] | |
| // MARK: - View Lifecycle | |
| override func viewDidLoad() { | |
| super.viewDidLoad() | |
| cellsSetup() | |
| tableViewSetup() | |
| } | |
| } | |
| // MARK: - Setup | |
| extension BadTableViewController { | |
| // NOTE: - Here we pre-create all the cells we need and add them to the cells array. Not good! | |
| func cellsSetup() { | |
| for _ in 0...1000 { | |
| let cell = UITableViewCell() | |
| cell.textLabel?.text = "Wow so bad" | |
| cells.append(cell) | |
| } | |
| } | |
| func tableViewSetup() { | |
| tableView.rowHeight = UITableViewAutomaticDimension | |
| tableView.estimatedRowHeight = 350 | |
| } | |
| } | |
| // MARK: - Table View Delegate | |
| extension BadTableViewController: UITableViewDelegate { | |
| } | |
| // MARK: - Table View Data Source | |
| extension BadTableViewController: UITableViewDataSource { | |
| func numberOfSections(in tableView: UITableView) -> Int { | |
| return 1 | |
| } | |
| func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int { | |
| return cells.count | |
| } | |
| func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell { | |
| // NOTE: - Now we only need to specify a cell from the array based on index, but not worth it | |
| let cell = cells[indexPath.row] | |
| return cell | |
| } | |
| } |
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