init<I, P>(url: URL?, scale: CGFloat, content: (Image) -> I, placeholder: () -> P)Loads and displays a modifiable image from the specified URL using a custom placeholder until the image loads.
The URL of the image to display.
Initializerinit(url:
init(url:scale:)
Loads and displays an image from the specified URL.
Availability 有効性
- iOS 15.0+
- iPadOS 15.0+
- macOS 12.0+
- Mac Catalyst 15.0+
- tvOS 15.0+
- watchOS 8.0+
Technology
- Swift
UI
Declaration 宣言
Parameters パラメータ
urlscaleThe scale to use for the image. The default is
1. Set a different value when loading images designed for higher resolution displays. For example, set a value of2for an image that you would name with the@2xsuffix if stored in a file on disk.
Discussion 議論
Until the image loads, SwiftUI displays a default placeholder. When the load operation completes successfully, SwiftUI updates the view to show the loaded image. If the operation fails, SwiftUI continues to display the placeholder. The following example loads and displays an icon from an example server:
AsyncImage(url: URL(string: "https://example.com/icon.png"))If you want to customize the placeholder or apply image-specific modifiers — like resizable(cap — to the loaded image, use the init(url: initializer instead.