Image not resizing in SwiftUI TabView

Question

I'm trying to use a custom icon in a SwiftUI TabView. I can't see what's wrong with this code – I've included resizable on the image, yet it does not scale down.

HomeView()
          .tag(0)
          .tabItem {
            VStack {
              Image("tab-home")
                .resizable()
                .aspectRatio(CGSize(width: 20, height: 20), contentMode: .fit)
              Text("Home")
            }

          }

When I view this, the image is full size.

It works fine when the Image is an SF Symbol.

Any ideas, SwiftUI ninjas?

score 9 · Answer 1 · answered Jul 02 '20 at 12:20

If you can accept the system choosing the image size for you, you can actually add a custom Symbol Image Set to achieve this. You can use any vector icon as your base.

Export an existing symbol

To get a hold of the symbol template we need, you can open the SF Symbols app, select an icon and export it.

Edit in sketch

Open in Sketch (or another tool of your choice). Notice there's a distinct struture defined. We'll need to follow this structure. In the middle, there's a size named 'Regular-M', defining this one will suffice for our purposes. Open the 'Shape' group and place your Path elements in there.

You can remove the other sizes. Then, make the whole page exportable and export as SVG.

Import in Xcode

In your XCAsset file, add a new Symbol Image Set and drag-and-drop the newly created SVG file into there.

Now, you can simply refer to the image using the name you defined in your XCAsset file as you would expect. The image sizes automatically and will properly use accent colors:

TabView {
    Text("Hello, world 1").tabItem {
        Image("your.image.name")
        Text("title1")
    }
}

I have been doing this but when using the custom symbol in a TabView, the image is smaller than it should, actually this is the case even if I skip the edit step (export SFSymbol SVG, then directly import it in Xcode as Symbol asset without edit). Any idea why ? — Kuringan, Apr 19 '21 at 00:30

score 6 · Accepted Answer · answered Oct 18 '19 at 11:48

6

This was the same in UIKit and the solution is to just use the right sizes for your images;

https://stackoverflow.com/a/29874619/3393964

answered Oct 18 '19 at 11:48

Casper Zandbergen

3,419
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Thanks. I thought it had maybe been solved in SwiftUI but no. – codewithfeeling Oct 18 '19 at 12:50
1

Yes you can solve it actually just use .renderingMode(.original) – AYohannes Apr 19 '20 at 05:04

Image not resizing in SwiftUI TabView

2 Answers2

Export an existing symbol

Edit in sketch

Import in Xcode

Linked