我正在使用
ScrollView
和 LazyHStack
创建水平轮播。
我想要达到的目标是这样的:
我想要的是:
到目前为止我能够实现的是:
如您所见,图像未对齐,文本也因此未对齐。
这是我的代码
轮播:
struct CarouselView<Content: View>: View {
let content: Content
@State private var currentIndex = 0
@State private var contentSize: CGSize = .zero
private let showsIndicators: Bool
private let spacing: CGFloat
private let shouldSnap: Bool
init(showsIndicators: Bool = true,
spacing: CGFloat = .zero,
shouldSnap: Bool = false,
@ViewBuilder content: @escaping () -> Content) {
self.content = content()
self.showsIndicators = showsIndicators
self.spacing = spacing
self.shouldSnap = shouldSnap
}
var body: some View {
ScrollView(.horizontal, showsIndicators: showsIndicators) {
LazyHStack(spacing: spacing) {
content
}.apply {
if #available(iOS 17.0, *), shouldSnap {
$0.scrollTargetLayout()
} else {
$0
}
}
}
.apply {
if #available(iOS 17.0, *), shouldSnap {
$0.scrollTargetBehavior(.viewAligned)
} else {
$0
}
}
}
}
extension View {
func apply<V: View>(@ViewBuilder _ block: (Self) -> V) -> V { block(self) }
}
然后我像这样使用轮播:
struct ContentView: View {
let imagesNames = ["img-1", "img-2", "img-3", "img-4"]
let numberOfLines = [2, 1, 3, 2]
var body: some View {
VStack(spacing: 40) {
continuousCarousel
}
}
private var continuousCarousel: some View {
CarouselView(showsIndicators: true,
spacing: 20) {
ForEach(0 ..< imagesNames.count, id: \.self) { index in
createImageTile(with: imagesNames[index],
height: 70,
numberOfLines: numberOfLines[index])
}
}
}
private func createImageTile(with image: String,
height: CGFloat,
numberOfLines: Int) -> some View {
VStack(spacing: .zero) {
Image(image)
.resizable()
.cornerRadius(30)
.scaledToFit()
.aspectRatio(contentMode: .fill)
.frame(width: 200, height: 100)
.padding(.bottom, 30)
Text("Headline")
.bold()
.padding(.bottom, 10)
ForEach(0 ..< numberOfLines, id: \.self) { _ in
Text("Some description here")
.padding(.bottom, 5)
}
}
}
}
我觉得在某处应用对齐或垫片可能会解决这个问题,但我不知道在哪里。
在我的
lazyHStack
上应用底部对齐不起作用,因为它将主要内容区域移动到滚动视图的底部。
我怎样才能实现我所需要的?
你可以试试
VStack(spacing: .zero) {
Image(image)
.resizable()
.cornerRadius(30)
.scaledToFit()
.aspectRatio(contentMode: .fill)
.frame(width: 200, height: 100)
.padding(.bottom, 30)
HStach {
Text("Headline")
.bold()
.padding(.bottom, 10)
ForEach(0 ..< numberOfLines, id: \.self) { _ in
Text("Some description here")
.padding(.bottom, 5)
}
Spacer()
}
Spacer()
}