Xcode - SwiftUI center items in LazyVGrid

James
July 14, 2021
189 views
1 vote
2 Answers

I am new to SwiftUI and am trying to center elements inside the LazyVGrid View.

Here is what I have currently:

Using:

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()
        }
    }
}

But as you can see, this only aligns the elements to the left – I also do not know the number of characters that I may need to display. I would also like the keep the spacing between them the same as above.

Any help would be greatly appreciated!

Thanks.

Answers

2 options

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()
        }
    }
}

Change to 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()
        }
    }
}

And as mentioned in the comments if you set a maximum they will be centered/justified to that max

LazyHGrid w/ 3 rows with a maximum of 40

LazyVGrid w/ 5 columns with a maximum of 40

I faced the same issue and couldn’t solve it so I used a ScrollView and foreach to achieve the same way I need it

struct Subview: View {
var Items = ["a","b","c","d","e"]
var body: some View {
    ZStack(){
        Color("AccentColor").edgesIgnoringSafeArea(.all)
        VStack{
            HStack(alignment:.center){
            GeometryReader { geo in
                ScrollView(.horizontal,showsIndicators: false){
                HStack(alignment:.center){
                ForEach(Items, id: .self) { item in
                Button {
                    } label: {
                Text("(item)")
                }.frame(width:50,height: 50, alignment: .center).background(Color.red).cornerRadius(25)
                                
                }
                            
                            
                }.frame(width:geo.size.width,height: geo.size.height ,alignment: .center)
                        }
                    }
            }.frame(width: UIScreen.main.bounds.width - 40, height: 100, alignment: .center)
        }
        
    }.frame(width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height, alignment: .center)
            
}    }

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Xcode – SwiftUI center items in LazyVGrid

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