How To Create Custom Class In Xcode Project
It is very easy to create a custom swift or objective-c class in Xcode project, this article will tell you how to do it step by step.
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How To Create A Swift App Without Storyboard
The storyboard is a very easy-to-use feature in iOS app development. It is visual and user-friendly. But in some cases, we need to know the backend of the storyboard, we should know how the code executing logic at the storyboard backend. This article will show you an example of how to create a swift app
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What Does Operator _ , ! , ? , ?? Means In Swift
If you are a beginner of iOS swift programming, you may be confused by some strange swift operator, such as _, !, ?, ??. This article will tell you what dose those strange swift operator means one by one.
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How To Get Xcode Quick Help Document For iOS API Class Or Method
When we develop iOS applications use Xcode, we always need to get the help document of some iOS API library class or method which we do not remember. This article will tell you how to get the Xcode quick help document of the iOS library class or method.
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How To Show Hidden Files In Mac OS Finder And Select Hidden Files In Html Upload File Form
When you use Mac OS Finder to browse files, you will find it can not display hidden files. This is the Mac OS default settings. But this is not user-friendly when you need to select hidden files in the Mac OS Finder to submit the hidden files to a web server. So this article will
How To View Multiple Pictures On Mac Continuously
When you view pictures on Mac OS, you may find you can only view one picture at one time. If you want to view another image picture, you should close the first image viewer, and then click and open the second image in a new image preview viewer. This is not user-friendly. This article will
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How To Simulate Memory Warning In Xcode 10 iOS Simulator
When you develop an iOS app, you sometimes need to simulate memory warning notifications to test your iOS app in high memory pressure conditions. Xcode simulator just provides such a tool for you to trigger memory warning notifications. Then you can test your source code in ViewController class’s didReceiveMemoryWarning function. This article will tell you
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How To Set iOS App Supported Devices And Orientation In Xcode Target Or Programmatically
When you develop an iOS app, you may want your app to support iPhone, iPad only, or support both of them. And in some cases, if your UI layout is very complex, you can make your iOS app layout fixed by showing the app only in one orientation ( for example Portrait or Landscape orientation
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How To Make iOS App Run At Background Or Exit When Press Home Button
When you press the iOS device’s home button, you may want your iOS app to go to the background and resume running later, or you may want your iOS app to terminate and exit at once. This article will tell you how to implement it with examples. But first, you had better read the article
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How To Add Resource Files Into Xcode Project And iOS App
When you develop an iOS app, you may need to add some resource files ( such as image files, audio files, data files, etc) into it. And when you installed an iOS app binary file, you can open it in the macOS finder by right click the app binary file then click the Show Package
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