UIRefreshControl 在带有大标题的 UINavigation 后面呈现

Question

I am trying to create a UITableViewController , with a UINavigationBar using large titles.

The trouble I am having is, when using pull to refresh on an empty table view, the loading indicator is behind the text for the large title.

If I pull to refresh a second time it does not have this issue.

I have attached a gif that shows the behaviour.

My view controller is very simple at this point

final class FeedSceneViewController: UITableViewController {

  private var loader: FeedLoader?

  convenience init(loader: FeedLoader) {
    self.init()
    self.loader = loader
  }

  override func viewDidLoad() {
    super.viewDidLoad()

    tableView.refreshControl = .init()
    load()

    configureTableView()
    configureUI()
  }

  func load() {
    tableView.refreshControl?.set(isRefreshing: true)
    loader?.load(then: { [weak self] _ in self?.refreshControl?.set(isRefreshing: false) })
  }

}

private extension FeedSceneViewController {

  func configureTableView() {
    tableView.backgroundColor = .usingHex("fafafa")
    tableView.tableFooterView = .init()
  }

  func configureUI() {
    navigationController?.navigationBar.prefersLargeTitles = true
    navigationItem.title = "Latest content"
  }
}

Answer 1

It looks like you are setting the refresh control after the large navigation has been configured.

Try changing the order to something like this -

  override func viewDidLoad() {
    super.viewDidLoad()

    load()

    configureTableView()
    configureUI()
  }
.......
  func configureTableView() {
    tableView.backgroundColor = .usingHex("fafafa")
    tableView.tableFooterView = .init()
    tableView.contentInsetAdjustmentBehavior = .always
    tableView.refreshControl = .init()
  }

  func configureUI() {
    navigationController?.navigationBar.prefersLargeTitles = true
    navigationItem.title = "Latest content"
  }

Answer 2

Maybe you can try this in your viewDidLoad()

self.edgesForExtendedLayout = []

it makes your table view doesn't conflict with your navigation bar