SwiftUI HStack with uneven sized elements

Question

Looking for a way to split an HStack in uneven elements, one taking over 1/2 of the screen and the other two 1/4 of the screen (see attachment).

Code:

 struct MyCategoryRow: View { var body: some View { VStack(alignment: .leading, spacing: 0) { HStack(spacing: 0) { ForEach(0...2, id: \.self) { block in ColoredBlock() }.frame(minWidth: 0, maxWidth: .infinity, alignment: Alignment.topLeading) } } }

So the above code results in an HStack with 3 colored blocks of equal width. I tried enforcing width using UIScreen.main.bounds.width but that approach doesn't adapt to change in orientation. I also tried using GeometryReader like so:

 GeometryReader { g in ColoredBlock().frame(width: block == 0 ? g.size.width * 2 : g.size.width / 2) }

But that didn't work either, seems like the fact that every ColoredBlock will take up 1/3 of the HStack is decided beforehand.

Update with layoutPriority attempt:

struct MyCategoryRow: View { var body: some View { VStack(alignment: .leading, spacing: 0) { HStack(spacing: 0) { ForEach(0...2, id: \.self) { block in ColoredBlock(background: (block == 0) ? Constants.pastel1 : Constants.pastel2).layoutPriority(block == 0 ? 1.0 : 0.5) }.frame(minWidth: 0, maxWidth: .infinity, alignment: Alignment.topLeading) } } } struct ColoredBlock: View { let background: Color var body: some View { GeometryReader { geometry in VStack(spacing: 0){ HStack { Text("Some text").padding(.horizontal, 15).padding(.top, 15) }.frame(alignment: .leading) VStack(alignment: .leading){ Text("Some more text").font(.subheadline).fontWeight(.light) }.padding(.vertical, 10).padding(.horizontal, 15) }.background(self.background) .cornerRadius(15) } } }

Result:

Michael Long · Accepted Answer · 2019-10-11 00:40:18Z

0

I think what you need is .layoutPriority. Set it to 1.0 for the first block and 0.5 for the second and third blocks.

answered Oct 11, 2019 at 0:40

Michael Long

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1 Comment

sugar2code Over a year ago

Thanks! Updated my question above with my attempt to implement your suggestion. Result was the first block is now taking up about 90% of the screen. Added code for ColoredBlock as well, maybe I'm doing something wrong there.

sugar2code · Accepted Answer · 2019-10-21 21:54:19Z

What I ended up doing was using GeometryReader in MyCategoryRow instead of ColoredBlock and passing width to ColoredBlock

HStack { ForEach(0...2, id: \.self) { block in ColoredBlock(background: (block == 0) ? Constants.pastel1 : Constants.pastel2, width: block == 0 ? geometry.size.width / 2 : geometry.size.width / 4, height: 150.0) } }

This works, though now I find myself having to specify a height which I'd prefer not to hardcode. If anyone has a better solution, please let me know!

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