12/17/2023 0 Comments Xcode 11 userinterfacestate git![]() The X value increases as you move the element farther to the right,Īnd Y increases as you move down the screen. Use the X and Y fields-where the top-left of the screen corresponds to (0,0)-to change the element's position. Use the Size inspector to adjust the size and position of the selected element within the scene. Try changing the appearance of your button. In the case of a UIButton, you can change such attributes as the button's text, text color, background, and alignment. The Attributes inspector provides a list of adjustable visual properties for the selected item. You'll learn more about classes in a future lesson. The class of the button that you just added. If you defined a custom button class elsewhere, use the Identity inspector to change ![]() In this example, the button belongs to the UIButton class. Use the Identity inspector to edit the properties that are related to an object's identity, such as its associated class. ToĮxplore these different inspectors and how they can help you customize the objects in your view, select the button that you just added to the scene-either in the Document Outline or in the scene itself. In addition to the File and Quick Help inspectors, which are always available, the top of the utilities area displays four context-sensitive inspectors when you're working in Interface Builder. In the utilities area of Xcode, notice the inspectors. The Button object now appears in the Document Outline as well. Release the Button to drop it into the scene. The layout guides help you place content within appropriate Try to align the button using the layout guides, which appear as blue dotted lines. Use the Object library to add UI elements, such as buttons or views, to your canvas.ĭrag the Button object out of the library and move it to the upper-left corner of the canvas. As you might notice, clicking the view in the outline highlights the corresponding element on the canvas. Click the gray triangles to the left ofĮach item to inspect the contents. The Document Outline displays a list of each view controller in the scene, along with a hierarchical list of the elements within each view controller. To reveal the view, click the Show Document Outline button To the left of the main canvas is the Document Outline view. Of a storyboard by selecting a view controller and selecting the Is Initial View Controller checkbox in the Attributes inspector. You determine the initial view controller ![]() A storyboard has only one initial view controller. The initial view controller is the first view controller that appears when the storyboard loads. The gray arrow indicates the initial view controller of a storyboard. Notice the gray arrow to the left of the view controller. The Main Interface field defines which storyboard file the app loads first upon launch.īecause you created the project using the Single View App template, this field is preconfigured to use Main.storyboard.Ĭlick on the Main storyboard file in the project navigator. To investigate, select the top-most file ( LearningXcode) in the project navigator, and find the Deployment Info section under the General header. ![]() How did the app know to display this screen? The simulator displays the same white screen you saw in the storyboard. Near the bottom of the canvas to get the same result.īuild and run the project. If you don't have a trackpad, you can use the zoom buttons To see more view controllers at the same time, use two fingers on a Multi-Touch trackpad to pinch and zoom the canvas out or to zoom in on a particular view. As you add more scenes to the storyboard, youĬan drag them anywhere on the canvas. In the center of the screen, notice a single scene with a plain white view on an otherwise blank canvas. Same time helps you understand the flow within your app.Ĭlick Main.storyboard in the project navigator to open the file in Interface Builder. As a developer, your ability to see multiple screens at the ![]() In contrast with an XIB, a storyboard file includes multiple pieces of the interface, defining the layout of one or more screens as well as defining the progression from one screen to another. They're still a useful format in certain situations,īut this lesson will focus on storyboards. XIBs were used more often before the introduction of storyboards. storyboard) from the project navigator.Īn XIB file contains the user interface for a single visual element, such as a full-screen view, a table view cell, or a custom UI control. Interface Builder opens when you select an XIB file (. In this unit, you'll learn how to navigate through Interface Builder, add elements onto the canvas, and interact with those elements in code. Xcode has a built-in tool called Interface Builder that you can use to create interfaces visually.
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