Leaves One

Problem

In some cases, SwiftUI’s Alert and ActionSheet buttons don’t use accent color by default unless users tap & move their finger on them. This is weird and buggy.

Attempt

It’s attempting to add the following constructor to the struct with @main attribute:

init {
    UIView.appearance().tintColor = UIColor(named: "AccentColor")
}

But without specifying the containerTypes parameter in UIView.appearance(), it will affect other views as well. For example, the foreground color of swipe actions in List will also be changed to the accent color, which is not what we want.

Docs: appearance(whenContainedInInstancesOf:)

Solution

Be more specific about the container types:

init {
    UIView.appearance(whenContainedInInstancesOf: [UIAlertController.self])
        .tintColor = UIColor(named: "AccentColor")
}

Notice that by specifying the container types as above, the foreground color navigation items will be set to the default blue.

Add .tint(.accentColor) will fix this:

var body: some Scene {
    WindowGroup {
        ContentView()
            .tint(.accentColor) // <--- Add this
    }
}

You may also want to define tint color for swipeActions buttons (a simple .tint(_:) will work).