Wsrtjtyk

I am trying to make an iOS app, using Xcode 10.1 (10B61) and Swift4.

I have an issue about UIRefreshControl Indicator appearance, like the image below.

UIRefreshControl script is written in each TableViewController class (same code about refresh func).

class TableViewController1: UITableViewController  {



override func viewDidLoad() {

    super.viewDidLoad()



    refreshControl = UIRefreshControl()

    refreshControl?.addTarget(self, action: #selector(onRefresh), for: .valueChanged)

}

class TableViewController2: UITableViewController  {



override func viewDidLoad() {

    super.viewDidLoad()



    refreshControl = UIRefreshControl()

    refreshControl?.addTarget(self, action: #selector(onRefresh), for: .valueChanged)

}

Anybody please give me some advise.

Thank you.

This happens because of combination of things.

1. You're using large headers for navigation controller. That makes TableViewController (actually any scrollable view) to put its refreshControl on navigation bar . This behaviour was introduced in iOS 11 https://developer.apple.com/documentation/uikit/uinavigationbar/2908999-preferslargetitles




2. You're using two scrollable views and one of them binds to navigation bar and another is not. During debug I've found out that the first scrollable view in hierarchy attached its refreshControl to navigation bar.

So, that's means we can fix it by putting some fake or dummy scrollable view somewhere on the bottom of hierarchy in order to it binds its refreshControl to navigation bar first. Starting from iOS 11 any scrollable view may have refreshControl and its "binded" even if you don't declare it explicitly.

In your case you might just add UIScrollView before container in this way:


- View
-- Safe Area
-- UIScrollView (dummy)
-- ContainerView
---- TableView 1
---- TableView 2
...


Try this--

class TableViewController2: UITableViewController  {



override func viewDidLoad() {

    super.viewDidLoad()



    refreshControl = UIRefreshControl()

    refreshControl?.addTarget(self, action: #selector(onRefresh), for: .valueChanged)

  //Updated code.. this will fix it

  self.tableView.addSubview(refreshControl)



}

Let us know .. is working ?

TableviewController 1

class TableViewController1: UITableViewController  {



    var refreshControl = UIRefreshControl()



    override func viewDidLoad() {

    super.viewDidLoad()





    refreshControl?.addTarget(self, action: #selector(onRefresh), for: .valueChanged)

    tableView1.addSubview(refreshControl)    // Added Line



}

TableviewController 2

class TableViewController2: UITableViewController  {



    var refreshControl = UIRefreshControl()



    override func viewDidLoad() {

    super.viewDidLoad()





    refreshControl?.addTarget(self, action: #selector(onRefresh), for: .valueChanged)



    tableView2.addSubview(refreshControl)    // Added Line



}