The buttonPressed method of our ViewController will be invoked when the button is pressed. In ViewController.swift, we’ll implement an Alert function that wraps UIAlertController to provide a JavaScript like alert. When we run the app, the background is indeed blue. Let’s try something really simple, like changing the screen background to blue. We will create our UI by editing the ViewController.swift file. When we run this version of the app, we get a blank white screen, but it’s being displayed with code and not by the Main.storyboard file. We also set the window’s background color to white and made the window visible. We set the rootViewController to this ViewController. There is always one UIWIndow per application unless your app will display on an external device screen.ĪppCode generated a ViewController.swift file for us that defines a default ViewController that basically does nothing. We set the window member to a created UIWIndow element. We’ll need to edit the AppDelegate.swift file to set the window and its rootViewController. The application will only show a blank black screen because we have not specified a View to be displayed. We want to remove it from the project.ĭelete these two lines in the ist file.ĭelete the Main.storyboard file from your project. This contains the blank white screen that we are seeing in the simulator. Notice in the project tree there’s a Main.storyboard file. This is all that the default application does. The simulator will launch (if it’s not already running) and you’ll get a blank white screen. From the Run menu, choose Run, and then select a simulator or device target on which to run. Now that the project is created, we can run the default application generated by AppCode to see what it does. On the next screen, we choose a product name and Swift as the Language for the project. Note: we choose iOS Application and Single View Application. Selecting “File”, then “New Project” brings up the following dialog. The first thing we need to do is create our project in AppCode. In this post, we will demonstrate how to create a Swift project in JetBrains’ AppCode, eliminate the Main.storyboard, and generate a view with a button that is centered on the screen horizontally. In doing so, you may dynamically layout your screen based upon screen dimensions and business logic that dictates elements be hidden or shown. The alternative is to instantiate the UI element classes and to configure the elements’ properties in code. There’s no requirement that you use Storyboards at all. There are point and click features for connecting events to methods in your classes, though you will be switching between source code for your classes and the WYSIWYG editor to do so. This editor allows you to design the user interface for your app with a drag and drop WYSIWYG view and form based entry to configure the properties of the user interface elements. For the most part you can do your work in AppCode. You still need to use Xcode for things like adding images to xcassets, and working with Storyboards. You get the added bonus of JetBrains’ HTML, JavaScript, and CSS editors. JetBrains’ AppCode brings all of their excellent IDE functionality to building Objective-C and Swift applications. The interface for setting the various options for building and linking your program can be overwhelming. The editor has its own idiosyncrasies, like hitting the tab key with a range of lines selected replaces the lines with a tab character instead of the expected behavior of indenting the lines. If you’ve ever set up a continuous integration system, you’re familiar with the command line tools.Īpple’s Xcode is a full featured IDE for developing C, C++, Objective-C, and Swift applications. You can use a traditional text editor (like vim or emacs) to edit your source and use the command line compilers to compile and build your application. There are at least three ways to develop GUI applications for iOS and OSX. Swift has a much easier syntax to learn than Objective-C, and is more secure and less prone to latent bugs like stack overflow errors. Apple announced Swift at WWDC a year ago and Swift 2.0 at this year’s WWDC. For years, the only language for developing UI applications for OSX and iOS was Objective-C and the only IDE was Apple’s Xcode.
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