我构建了一个RSS提要应用程序，在其中我有一个Pull To refresh功能，它最初有上面列出的一些问题。

但是为了补充上面用户的答案，我到处寻找我的用例，但没有找到它。我正在从网络(RSSFeed)下载数据，我想下拉我的故事tableView来刷新。

上面提到的内容涵盖了正确的领域，但人们遇到了一些问题，以下是我所做的，它很有效:

我采取了@Blankarsch的方法，去了我的主。然后选择表视图来使用刷新，然后没有提到的是创建IBOutlet和IBAction来有效地使用刷新

//Created from main.storyboard cntrl+drag refresh from left scene to assistant editor @IBOutlet weak var refreshButton: UIRefreshControl override func viewDidLoad() { ...... ...... //Include your code ...... ...... //Is the function called below, make sure to put this in your viewDidLoad //method or not data will be visible when running the app getFeedData() } //Function the gets my data/parse my data from the web (if you havnt already put this in a similar function) //remembering it returns nothing, hence return type is "-> Void" func getFeedData() -> Void{ ..... ..... } //From main.storyboard cntrl+drag to assistant editor and this time create an action instead of outlet and //make sure arguments are set to none and note sender @IBAction func refresh() { //getting our data by calling the function which gets our data/parse our data getFeedData() //note: refreshControl doesnt need to be declared it is already initailized. Got to love xcode refreshControl?.endRefreshing() }

希望这能帮助到和我处境相同的人

由于可定制性较差，代码重复和刷新控件带来的错误，我创建了一个库PullToRefreshDSL，它使用DSL模式，就像SnapKit一样

// You only have to add the callback, rest is taken care of
tableView.ptr.headerCallback = { [weak self] in // weakify self to avoid strong reference
    DispatchQueue.main.asyncAfter(deadline: .now() + .seconds(2)) { // your network call
        self?.tableView.ptr.isLoadingHeader = false // setting false will hide the view
    }
}

你只需要在任何UIScrollView子类后添加神奇的关键字ptr，即UITableView/UICollectionView

你不需要下载库，你可以探索和修改源代码，我只是指向一个可能的实现拉动刷新iOS

您可以通过使用几行代码来实现这一点。所以为什么你会困在第三方库或UI中。 拉动刷新是iOS内置的。你可以像这样快速完成

var pullControl = UIRefreshControl()

override func viewDidLoad() {
   super.viewDidLoad()

   pullControl.attributedTitle = NSAttributedString(string: "Pull to refresh")
   pullControl.addTarget(self, action: #selector(pulledRefreshControl(_:)), for: UIControl.Event.valueChanged)
   tableView.addSubview(pullControl) // not required when using UITableViewController
}

@objc func pulledRefreshControl(sender:AnyObject) {
   // Code to refresh table view  
}

斯威夫特5

private var pullControl = UIRefreshControl()

pullControl.attributedTitle = NSAttributedString(string: "Pull to refresh")
        pullControl.addTarget(self, action: #selector(refreshListData(_:)), for: .valueChanged)
        if #available(iOS 10.0, *) {
            tableView.refreshControl = pullControl
        } else {
            tableView.addSubview(pullControl)
        }
// Actions
@objc private func refreshListData(_ sender: Any) {
        self.pullControl.endRefreshing() // You can stop after API Call
        // Call API
    }

使用storyboard和Swift的解决方案:

Open your .storyboard file, select a TableViewController in your storyboard and "Enable" the Table View Controller: Refreshing feature in the Utilities. Open the associated UITableViewController class and add the following Swift 5 line into the viewDidLoad method. self.refreshControl?.addTarget(self, action: #selector(refresh), for: UIControl.Event.valueChanged) Add the following method above the viewDidLoad method func refresh(sender:AnyObject) { // Updating your data here... self.tableView.reloadData() self.refreshControl?.endRefreshing() }

我建议在每个类中使用pull to Refresh的扩展。

1)创建一个空的swift文件:文件-新建-文件- swift文件。

2)添加以下内容

    //  AppExtensions.swift

    import Foundation
    import UIKit    

    var tableRefreshControl:UIRefreshControl = UIRefreshControl()    

    //MARK:- VIEWCONTROLLER EXTENSION METHODS
    public extension UIViewController
    {
        func makePullToRefreshToTableView(tableName: UITableView,triggerToMethodName: String){

            tableRefreshControl.attributedTitle = NSAttributedString(string: "TEST: Pull to refresh")
            tableRefreshControl.backgroundColor = UIColor.whiteColor()
            tableRefreshControl.addTarget(self, action: Selector(triggerToMethodName), forControlEvents: UIControlEvents.ValueChanged)
            tableName.addSubview(tableRefreshControl)
        }
        func makePullToRefreshEndRefreshing (tableName: String)
        {
            tableRefreshControl.endRefreshing()
//additional codes

        }
    }    

3)在你的视图控制器中调用这些方法:

  override func viewWillAppear(animated: Bool) {

self.makePullToRefreshToTableView(bidderListTable, triggerToMethodName: "pullToRefreshBidderTable")
}

4)在某些时候，你想要结束刷新:

  func pullToRefreshBidderTable() {
self.makePullToRefreshEndRefreshing("bidderListTable")    
//Code What to do here.
}
OR    
self.makePullToRefreshEndRefreshing("bidderListTable")