Instance Property インスタンスプロパティ

horizontalSizeClass

The horizontal size class of this environment. この環境の水平サイズ等級。

Declaration 宣言 

var horizontalSizeClass: UserInterfaceSizeClass? { get set }

Discussion 議論

You receive a UserInterfaceSizeClass value when you read this environment value. The value tells you about the amount of horizontal space available to the view that reads it. You can read this size class like any other of the EnvironmentValues, by creating a property with the Environment property wrapper:


@Environment(\.horizontalSizeClass) private var horizontalSizeClass

SwiftUI sets this size class based on several factors, including:

  • The current device type.

  • The orientation of the device.

  • The appearance of Slide Over and Split View on iPad.

Several built-in views change their behavior based on this size class. For example, a NavigationView presents a multicolumn view when the horizontal size class is UserInterfaceSizeClass.regular, but a single column otherwise. You can also adjust the appearance of custom views by reading the size class and conditioning your views. If you do, be prepared to handle size class changes while your app runs, because factors like device orientation can change at runtime.

See Also 参照

Display Characteristics

var colorScheme: ColorScheme
The color scheme of this environment. この環境のカラースキーム。
var colorSchemeContrast: ColorSchemeContrast
The contrast associated with the color scheme of this environment. この環境のカラースキームと結び付けられたコントラスト。
var displayScale: CGFloat
The display scale of this environment. この環境の表示縮尺。
var imageScale: Image.Scale
The image scale for this environment. この環境に対するイメージ縮尺。
var pixelLength: CGFloat
The size of a pixel on the screen. 画面上のあるピクセルの大きさ。
var verticalSizeClass: UserInterfaceSizeClass?
The vertical size class of this environment. この環境の垂直サイズ等級。
var widgetFamily: WidgetFamily
The template of the widget — small, medium, or large. ウィジェットのテンプレート — 小、中、または大。