I want to implement an effect that when the iOS app start, it popup an alert dialog in the screen and display some messages. But during the process, i meet […]
If you want to import objective-c class’s .h and .m file into swift project, Xcode will create an Objective-C Bridging Header file in the swift project automatically. But sometimes you […]
When you develop iOS app use swift, if you have some older function wrote by objective-c language, you can use Objective-C bridging header file to import your objective-c header files […]
When we define a swift function, we can provide function parameters to it, and each function parameter can has an external name and an internal name. External name is used […]
Xcode project organize project resource files use Asset Catalog. Each asset catalog can contain multiple asset sets, for example app icon set, image set, color set etc. When you create […]
This article will tell you how to add text font library from external .ttf font file to swift Xcode project, and how to use the .ttf file provided text font […]
Swift UIKit.UIFont class is used to specify the label text font. You can use system built-in text font, or you can customize the text font by provide the font name […]
UIKit.UILabel class is used to create a label in iOS swift source code programmatically. You can change label text, label text color, label background color, label border width, label border […]
This example will show you how to implement animation for UIView object in swift. It will display three swift UIView animations. The first animation is a spring animation which will […]
Swift view can has subviews, the subview can has it’s own subview also. So you can implement a view tree in swift, all the subview is saved in a subview […]
