iOS 26中无法修改未选中TabItem标题颜色问题求助

问题原因 #

iOS 26对UITabBar的外观配置逻辑做了调整，原有的UITabBarItemAppearance配置可能被系统默认属性覆盖，导致未选中项的图标和标题颜色无法生效。

方案1：调整UIKit配置代码 #

在原有配置基础上，显式设置UITabBar的unselectedItemTintColor属性，确保未选中项颜色被正确应用：

import SwiftUI

@main
struct ExampleApp: App {

    init() {
        let appearance = UITabBarAppearance()
        appearance.configureWithOpaqueBackground()

        func configure(_ itemAppearance: UITabBarItemAppearance) {
            itemAppearance.normal.iconColor = .yellow
            itemAppearance.normal.titleTextAttributes = [
                .foregroundColor: UIColor.yellow
            ]

            itemAppearance.selected.iconColor = .red
            itemAppearance.selected.titleTextAttributes = [
                .foregroundColor: UIColor.red
            ]
        }

        configure(appearance.stackedLayoutAppearance)
        configure(appearance.inlineLayoutAppearance)
        configure(appearance.compactInlineLayoutAppearance)

        UITabBar.appearance().standardAppearance = appearance
        UITabBar.appearance().scrollEdgeAppearance = appearance
        // 显式设置未选中项的整体色调
        UITabBar.appearance().unselectedItemTintColor = .yellow
        // 显式设置选中项色调
        UITabBar.appearance().selectedItemTintColor = .red
    }

    var body: some Scene {
        WindowGroup {
            ContentView()
        }
    }
}

struct ContentView: View {
    var body: some View {
        TabView {
            Color.red.opacity(0.1)
                .tabItem {
                    Image(systemName: "house.fill")
                    Text("Home")
                }

            Color.green.opacity(0.1)
                .tabItem {
                    Image(systemName: "magnifyingglass")
                    Text("Search")
                }

            Color.blue.opacity(0.1)
                .tabItem {
                    Image(systemName: "heart.fill")
                    Text("Favorites")
                }

            Color.purple.opacity(0.1)
                .tabItem {
                    Image(systemName: "person.fill")
                    Text("Profile")
                }
        }
    }
}

方案2：使用SwiftUI原生修饰符（更简洁） #

放弃UIKit的配置方式，直接用SwiftUI提供的unselectedTabItemTintColor和tint修饰符，适配iOS 15+：

import SwiftUI

@main
struct ExampleApp: App {
    var body: some Scene {
        WindowGroup {
            ContentView()
        }
    }
}

struct ContentView: View {
    var body: some View {
        TabView {
            Color.red.opacity(0.1)
                .tabItem {
                    Image(systemName: "house.fill")
                    Text("Home")
                }

            Color.green.opacity(0.1)
                .tabItem {
                    Image(systemName: "magnifyingglass")
                    Text("Search")
                }

            Color.blue.opacity(0.1)
                .tabItem {
                    Image(systemName: "heart.fill")
                    Text("Favorites")
                }

            Color.purple.opacity(0.1)
                .tabItem {
                    Image(systemName: "person.fill")
                    Text("Profile")
                }
        }
        .tint(.red) // 设置选中项的颜色
        .unselectedTabItemTintColor(.yellow) // 设置未选中项的颜色
    }
}

说明 #

• 方案1兼容原有UIKit配置逻辑，适合需要更复杂TabBar外观定制的场景；
• 方案2完全使用SwiftUI原生API，代码更简洁，推荐在纯SwiftUI项目中使用。

内容的提问来源于stack exchange，提问作者Never_be