Instance Method インスタンスメソッド

background(_:in:fillStyle:)

Sets the view’s background to an insettable shape filled with a style.

Declaration 宣言 

func background<S, T>(_ style: S, in shape: T, fillStyle: FillStyle = FillStyle()) -> some View where S : ShapeStyle, T : InsettableShape

Return Value 戻り値

A view with the specified insettable shape drawn behind it.

Parameters パラメータ

style

A ShapeStyle that SwiftUI uses to the fill the shape that you specify.

shape

An instance of a type that conforms to InsettableShape that SwiftUI draws behind the view.

fillStyle

The FillStyle to use when drawing the shape. The default style uses the nonzero winding number rule and antialiasing.

Discussion 議論

Use this modifier to layer a type that conforms to the InsettableShape protocol — like a Rectangle, Circle, or Capsule — behind a view. Specify the ShapeStyle that’s used to fill the shape. For example, you can place a RoundedRectangle behind a Label:


Label("Flag", systemImage: "flag.fill")
    .padding()
    .background(.teal, in: RoundedRectangle(cornerRadius: 8))

The teal color fills the shape:

A screenshot of the flag icon and word on a teal rectangle with

This modifier and background(_:in:fillStyle:) are convenience methods for placing a single shape behind a view. To create a background with other View types — or with a stack of views — use background(alignment:content:) instead. To add a ShapeStyle as a background, use background(_:ignoresSafeAreaEdges:).