SwiftUI中形状的动态高度

Question

这是我要执行的操作的最小示例。

我有一系列的段落。

var notes = [
    "One line paragraph",
    "This is a small paragraph. This is a small paragraph. This is a small paragraph. This is a small paragraph.",
    "This is a big paragraph. This is a big paragraph. This is a big paragraph. This is a big paragraph. This is a big paragraph. This is a big paragraph. This is a big paragraph. This is a big paragraph. This is a big paragraph. This is a big paragraph. This is a big paragraph."
]

这就是我要显示的方式：

这是我的代码。

struct ContentView: View {
    var notes = [
        "One line paragraph",
        "This is a small paragraph. This is a small paragraph. This is a small paragraph. This is a small paragraph.",
        "This is a big paragraph. This is a big paragraph. This is a big paragraph. This is a big paragraph. This is a big paragraph. This is a big paragraph. This is a big paragraph. This is a big paragraph. This is a big paragraph. This is a big paragraph. This is a big paragraph."
    ]

    var body: some View {
        VStack(alignment: .leading) {
            ForEach(self.notes, id: \.self) {note in
                HStack {
                    Capsule()
                        .fill(Color.blue)
                        .frame(width: 4.5)

                    Text(note)
                    .lineLimit(nil)
                }
                .padding()
            }

        }
    }
}

这是我得到的输出：

我什至尝试在Spacer()的底部（在VStack之后）添加一个ForEach，但是输出仍然相同。

我想知道的是如何将这些蓝色竖线的高度更改为其相应段落的高度。

Answer 1

这是可行的方法。使用Xcode 11.4 / iOS 13.4进行了测试

var body: some View {
    VStack(alignment: .leading) {
        ForEach(self.notes, id: \.self) {note in
            HStack {
                Text(note)
                    .padding(.leading)
            }
            .overlay(Capsule()       // also can be .background
                        .fill(Color.blue)
                        .frame(width: 4.5), alignment: .leading)
            .padding()
        }
    }
}