#pull to refresh

[amazing-jquery-plugins]

7 best jQuery and Vanilla JavaScript pull to refresh libraries that provide a fast and convenient way to load more data or retrieve fresh data in your app by pulling down.

[arthurknopper]

SwiftUI Pull to Refresh Tutorial

The Pull to Refresh functionality can be used to refresh contents of a List by pulling down. SwiftUI introduced the refreshablel() modifier. In this tutorial a JSON file will be fetched from the internet and displayed in a list when the pull to refresh is initiated..This tutorial is built for iOS15 and Xcode 13, which can be download at the Apple developer portal.

Open Xcode and either click Create a new Xcode project in Xcode’s startup window, or choose File > New > Project. In the template selector, select iOS as the platform, select App template in the Application section and then click Next.

Enter SwiftUIPullToRefreshTutorial as the Product Name, select SwiftUI as Interface, SwiftUI App as Life Cycle and Swift as Language. Deselect the Include Tests checkbox and click Next. Choose a location to save the project on your Mac.

In the canvas, click Resume to display the preview. If the canvas isn’t visible, select Editor > Editor and Canvas to show it.

In the Project navigator, click to select ContentView.swift. Above the ContentView struct add a new Contact struct to hold the items of the json file which will be loaded.

struct Contact: Decodable, Identifiable { let id: Int let name: String let email: String }

Change the ContentView struct to

struct ContentView: View { // 1. @State private var contacts = [ Contact(id: 0, name: "SwiftUI", email: "Pull to refresh!")] var body: some View { NavigationView { // 2. List(contacts) { item in VStack(alignment: .leading) { Text(item.name) .font(.title) Text(item.email) .font(.subheadline) } } // 3. .refreshable { do { // 4. let url = URL(string: "https://ioscreator.com/s/contacts.json")! let (jsonData, _) = try await URLSession.shared.data(from: url) contacts = try JSONDecoder().decode([Contact].self, from: jsonData) } catch { // error contacts = [] } } } } }

A state propery array of contacts is declared which will hold the contacts. The first item is a stub item which will display the pull to refresh text in the List.

The List is displayed and contains the name and emall of the contact

The refreshable modifier is added to the List and will display an activity indicator while running the code.

The json file is fetched asynchronously and decoded into the Contacts struct.

Go to the Preview and select Live Preview.

Pull down the Pull to refresh item to load and display the contacts.

The source code of the SwiftUIPullToRefreshTutorial can be downloaded at the ioscreator repository on Github.

[amazing-jquery-plugins]

5 best jQuery and Vanilla JavaScript pull to refresh libraries that provide a fast and convenient way to load more data or retrieve fresh data in your app by pulling down.

[amazing-jquery-plugins]

Simple Pull To Refresh For Desktop & Mobile - mkPullFresh

mkPullFresh is a small and easy jQuery pull/swipe to refresh plugin to load more content into the current page just like the native mobile app.

Demo

Download

[uxuigifs]

The “Pull Down To Refresh” Interface Animation

By Eugene Machiavelli

[uxuigifs]

The “Pull Down To Refresh” Interface Animation

By Eugene Machiavelli

[arthurknopper]

Pull to Refresh iOS Tutorial

A UIRefreshControl object provides a standard control that can be used to initiate the refreshing of a table view’s contents. When pulled,  a little wheel starts spinning at the top, until the refresh has completed.  At that time, the wheel disappears, and the view bounces back into place. In this tutorial a refresh control will be added to a table view. When the control is pulled the sorting order of the rows will be reversed. This tutorial is made with Xcode 10 and built for iOS 12.

Open Xcode and create a new Single View App.

For product name, use IOSPullToRefreshTutorial and then fill out the Organization Name and Organization Identifier with your customary values. Enter Swift as Language and choose Next.

Go to the storyboard. Remove the View Controller from the Storyboard and drag a Navigation Controller to the Scene. This will also add the Table View Controller. Select the Navigation Controller and go to The Attribute inspector. In the View Controller section check the "Is Initial View Controller" checkbox.

Select the Table View Cell and go to the Attributes Inspector. In the Table View Cell section set the Identifier  to "Cell".

The storyboard will look like this.

Since the View Controller is removed from the Storyboard the ViewController.swift file can also be deleted from the project. Add a new file to the project, select iOS->Source->Cocoa Touch Class. Name it TableViewController and make it a subclass of UITableViewController.

The TableViewController class needs to be linked to The Table View Controller object in the Storyboard. Select it and go the Identity Inspector. In the Custom Class section change the class to TableViewController.

Go to TableViewController.swift and create a property containing an array of the first letters of the alphabet.

var alphabet = ["A","B","C","D","E","F","G","H","I"]

The TableViewController class contains some boilerplate code. Change the following delegate methods

override func numberOfSections(in tableView: UITableView) -> Int { // 1 return 1 } override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int { // 2 return alphabet.count } override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell { // 3 let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) cell.textLabel?.text = alphabet[indexPath.row] return cell }

There is only one section in the Table View so 1 needs to be returned in the numberOfSections(in:) method.

The number of rows is equal to the number of items in the array so the count property of the array class is used.

The letter of the alphabet at the current index of the apps array is assigned to the text property of the textLabel property of the current cell.

Build and Run the project.

Now that some rows are filled let's get going with the refresh control. If the pull to refresh is initiated the rows sort in descending/ascending order. First a Boolean is needed to switch the sort order. Add the following property in the interface section.

var isAscending = true

Change the viewDidLoad method.

override func viewDidLoad() { super.viewDidLoad() let refreshControl = UIRefreshControl() refreshControl.addTarget(self, action: #selector(sortArray), for: .valueChanged) self.refreshControl = refreshControl }

Every time the refresh control is pulled the UIControlEvent.ValueChanged event is triggered, which will call the sortArray method. Let's implement this method.

@objc func sortArray() { let sortedAlphabet = alphabet.reversed() for (index, element) in sortedAlphabet.enumerated() { alphabet[index] = element } tableView.reloadData() refreshControl?.endRefreshing() }

First the array is reversed with the reverse function. Then enumerate through the reversed array will be enumerated, where the reversed array will be loaded into the original alphabet array. The Table View is reloaded to update the contents and the RefreshControl animation is ended.

Build and Run, Pull-refresh a few times and the sorting order of the rows in the table view will be reversed.

You can download the source code of the IOSPullToRefreshTutorial at the ioscreator repository on Github

[digressingme-blog]

Pull to Refresh New Chrome OS Feature

Pull to Refresh New Chrome OS Feature

Pull to Refresh New Chrome OS Feature: Recently I was interested in trying out new features of Chrome OS, which is “pull to refresh”. I wondered what this meant? What is being pulled? Where? Apparently, this feature is a feature like the use of Chrome on mobile devices, which we can drag down the browser in order to refresh. But unfortunately, the new features that I can not enjoy. Because this…

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