介紹

在 iOS 26 中，UIButton 迎來了兩項(xiàng)非常實(shí)用的更新：

• Liquid Glass 風(fēng)格配置方法 — 讓按鈕擁有全新的半透明折射質(zhì)感，完美融入 iOS 26 的視覺系統(tǒng)。
• Symbol 動(dòng)畫切換 — 通過 symbolContentTransition 實(shí)現(xiàn)更順滑的 SF Symbols 切換效果。

適配 Liquid Glass

UIButton.Configuration 增加了符合 Liquid Glass 風(fēng)格的配置方法：glass()、clearGlass()、prominentGlass()與prominentClearGlass()。

代碼

import UIKit

class ViewController: UIViewController {
    let configs: [UIButton.Configuration] = {
        [
            {
                // iOS26新增
                var config = UIButton.Configuration.glass()
                config.title = "喜歡"
                config.image = UIImage(systemName: "heart")
                return config
            }(),
            {
                // iOS26新增
                var config = UIButton.Configuration.clearGlass()
                config.title = "收藏"
                config.image = UIImage(systemName: "star")
                return config
            }(),
            {
                // iOS26新增
                var config = UIButton.Configuration.prominentGlass()
                config.title = "分享"
                config.image = UIImage(systemName: "square.and.arrow.up")
                return config
            }(),
            {
                // iOS26新增
                var config = UIButton.Configuration.prominentClearGlass()
                config.title = "下載"
                config.image = UIImage(systemName: "arrow.down.circle")
                return config
            }()
        ]
    }()

    override func viewDidLoad() {
        super.viewDidLoad()

        view.backgroundColor = .systemGray

        for (index, config) in configs.enumerated() {
            let button = UIButton(frame: CGRect(x: 120, y: 220 + CGFloat(index) * 70, width: 160, height: 60))
            button.configuration = config
            view.addSubview(button)
        }
    }
}

效果

按鈕樣式.png

symbolContentTransition

UIButton.Configuration 增加了類型為UISymbolContentTransition?的屬性symbolContentTransition，用于切換 SF Symbols 圖標(biāo)，并且可以呈現(xiàn)切換動(dòng)畫。

代碼

import UIKit

class ViewController: UIViewController {
    let button = UIButton(frame: CGRect(x: 100, y: 200, width: 200, height: 200))

    override func viewDidLoad() {
        super.viewDidLoad()

        var config = UIButton.Configuration.plain()
        config.image = UIImage(systemName: "heart.circle")
        config.preferredSymbolConfigurationForImage = UIImage.SymbolConfiguration(pointSize: 50, weight: .thin)
        // iOS26新增
        config.symbolContentTransition = UISymbolContentTransition(.replace, options: .speed(0.1))
        button.configuration = config
        button.isSymbolAnimationEnabled = true
        button.tintColor = .systemRed
        view.addSubview(button)
    }

    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        button.configuration?.image = UIImage(systemName: "heart.circle.fill")
    }
}

效果

切換圖標(biāo).gif