iOS Tutorial

This article will tell you how to add one button, two buttons, three buttons, and the editable text fields in an iOS alert dialog in swift. The alert button style type can be UIAlertAction.Style.default, UIAlertAction.Style.cancel and UIAlertAction.Style.destructive. Now let us look at the demo picture below.

WebKit.WKWebView class provides functions to implement a micro web browser. It mainly provides three functions that can be used to load and display local Html file data, local binary file data ( such as an image file ), a remote web resource with provided URL (such as http://google.com, file://1.1.1.1/abc.txt), etc. This article will introduce how

In my iOS app, I add a UITextField in the Main.storyboard file. When I run the app in the iOS simulator, I find I can not input text in the UITextField use my Mac book pro hardware keyboard. And I find the soft keyboard does not prompt in the iOS simulator when I focus on

WebKit.WKWebView class is used to implement a micro web browser in the iOS app or Mac OS app. It provides several methods to load Html URL pages, local Html files, etc. But when I use it to load and display the Html page in iOS version 9 and later, I find it can not display

When I develop an iOS app, I add a UITextField in the app UI programmatically. And I also add some constraints to the UITextField object in swift source code to make it auto layout. But when I run the app, it throws an exception with the error message ‘NSGenericException’, reason: ‘Unable to activate constraint with

This example will tell you how to use the swift UISlider class to create a slider in the iOS app. There are two sliders in this example. The above slider is added in the interface builder. The below slider is added in swift source code programmatically. When you slide the slider, the related slider’s value

When I develop an iOS app with Xcode, I design the user interface by edit the Main.storyboard file. But when I click the Main.storyboard file to edit it, I can not find the View Controller Scene (Document Outline) panel at the center editor’s left side. This confused me a lot. Finally, I find the solution

This example will tell you how to add and use the iOS UISegmentedControl object both in the Main.storyboard visually and programmatically in swift source code. There are two UISegmentedControl objects on the app screen. The above one is added to the Main.storyboard visually, when click it’s item, it will display the item title or image

This example will tell you how to create and use the UISwitch component both in Xcode interface builder and swift source code. It will add one label, one UISwitch to the Main.storyboard. And the other UISwitch component is created and used in ViewController.swift file uses source code programmatically. Let us first look at the example

All the swift interactive UI components ( UITextField, UITextView, etc ) can prompt the keyboard automatically when you focus on it. And you can change the keyboard type both in the interface builder Attributes Inspector panel and programmatically. This article will tell you how to set the keyboard type and how to hide the keyboard