LazyVGrid中的SwiftUI中心项目

Question

我是SwiftUI的新手，正在尝试在LazyVGrid视图中居中放置元素。

这是我目前所拥有的：

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使用：

var body: some View {
    ZStack {
        Color(red: 75/255, green: 0, blue: 130/255).ignoresSafeArea()
        VStack {
            LazyVGrid(columns: [GridItem(.adaptive(minimum: 30))], alignment: .center, spacing: 10) {
                let letters = wordToArray(word: testWord)
                ForEach(Array(letters.enumerated()), id: \.offset) { letter in
                    Text(String(letter.element).capitalized)
                        .foregroundColor(.blue)
                        .frame(width:30, height: 40)
                        .background(Color.yellow)
                        .cornerRadius(5)
                }
            }
            .padding()
        }
    }
}

但正如您所看到的，这只会使元素向左对齐-我也不知道可能需要显示的字符数。我也希望他们之间的间距保持不变。

任何帮助都将不胜感激！

谢谢。

Answer 1

2个选项

struct CenteredLVSView: View {
    @State var letters: [String] = ["A", "B", "C", "D", "E","A", "B", "C", "D", "E","A", "B", "C", "D", "E"]
    //Specify column count and it will justify/center by width
    @State var columnCount: Int = 5
    var body: some View {
        ZStack {
            Color(red: 75/255, green: 0, blue: 130/255).ignoresSafeArea()
            LazyVGrid(columns: Array(repeating: GridItem(.flexible(minimum: 30
                 //If you set max it will center on width if smaller than max, uncomment below
                 //, maximum: 40
            )), count: columnCount), spacing: 10){
                ForEach(Array(letters.enumerated()), id: \.offset) { letter in
                    Text(String(letter.element).capitalized)
                        .foregroundColor(.blue)
                        .frame(width:30, height: 40)
                        .background(Color.yellow)
                        .cornerRadius(5)
                }
            }
            .padding()
        }
    }
}

​

​

更改为LazyHGrid

struct CenteredLVSView: View {
    @State var letters: [String] = ["A", "B", "C", "D", "E","A", "B", "C", "D", "E","A", "B", "C", "D", "E"]
    //Specify row count and it will justify/center height
    @State var rowCount: Int = 5
    var body: some View {
        ZStack {
            Color(red: 75/255, green: 0, blue: 130/255).ignoresSafeArea()
            LazyHGrid(rows: Array(repeating: GridItem(.flexible(minimum: 30
                //If you set max it will center if smaller than max, height uncomment below
                //, maximum: 40
            )), count: rowCount), spacing: 10){
                ForEach(Array(letters.enumerated()), id: \.offset) { letter in
                    Text(String(letter.element).capitalized)
                        .foregroundColor(.blue)
                        .frame(width:30, height: 40)
                        .background(Color.yellow)
                        .cornerRadius(5)
                }
            }
            .padding()
        }
    }
}

​

​

正如注释中所提到的，如果您设置了maximum，它们将居中/对齐到该最大值

LazyHGrid，带3行，最多40行

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LazyVGrid w/ 5列，最多40列

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