This example will show you how to implement animation for the UIView object in swift. It will tell you how to implement the below three swift UIView animations. The first uiview animation moves a red view from the screen top left to the bottom right use swift code. It is a spring animation. The second […]
Swift UIView Animation Example Read More »
A swift view can have subviews, the subview can have it’s own subview also. So you can implement a view tree in swift, all the subviews are saved in a subview array, later added subview will override previously added subview. This article will show you an example to tell you how to add, insert, move
How To Add, Insert, Move, Remove Sub View In iOS Swift Read More »
When I develop an iOS example application use swift, I meet a strange situation. When I click the run button to start my iOS example, it runs well. My example iOS app has a button, so I click it to trigger a Touch Up Inside event for this button, but this action makes my iOS
How To Fix Swift Unrecognized Selector Sent To Instance Error Read More »
After you create a swift project in Xcode and write some swift source code, you must want to debug your iOS app to help you to find out and fix errors that exist in your app. Debug and find error messages in Xcode is very easy, this article will tell you how to do it.
How To Debug And Get Error Messages In Xcode Step By Step Read More »
If you have a WordPress website, you may find your website always automatically upgrade to a newer version. This has both advantages and disadvantages. The advantage is that it can make your website update to date to avoid security issues. But the disadvantage is that if you have installed WordPress plugins which is not compatible
How To Enable / Disable WordPress Version Auto Upgrade Read More »
In the previous article How To Use Python Requests Module To Send Get Or Post Request Example, we have learned how to install and use the python requests module to send HTTP Get and Post request to a web server. It also tells you how to post form data or pass query string parameters use
How To Get / Set Http Headers, Cookies And Manage Sessions Use Python Requests Module Read More »
When I run Python code in Mac OS, I meet a certificate verify failed error like this ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1056). This error confused me a lot of time. And after googling the error, I finally found the solution to fix it, below are the steps.
This example will tell you how to create a rounded border button in swift. It will also tell you how to align buttons in the iOS app’s main screen, how to set the button background color, how to set button width and height etc.
How To Make Rounded Border Button In Swift Read More »
When we develop iOS app use Xcode, we design the app GUI ( graphical user interface ) in Main.storyboard file. And the swift source code is edited in ViewController.swift file. But how to use swift source code in ViewController.swift file to modify storyboard UI component’s attributes or process UI component’s action event? This article will
How To Connect Storyboard UI Component To ViewController Class Code Read More »
This article will tell you what is Xcode Library, Assistant Editor, and Inspector. It will also tell you how to display Xcode Library, Assistant Editor, and Inspector window when you need them. Because for Xcode beginners, you may find you can not find them at some time.
How To Display Xcode Library, Assistant Editor, Inspectors Window Read More »
