SwiftUI问题总结

1.自定义返回按钮

// 设置返回按钮图片
UINavigationBar.appearance().backIndicatorImage = UIImage(named: "navi_back_black")
UINavigationBar.appearance().backIndicatorTransitionMaskImage = UIImage(named: "navi_back_black")
// 隐藏返回按钮默认的文字
extension UINavigationController {
    // Remove back button text
    open override func viewWillLayoutSubviews() {
        navigationBar.topItem?.backBarButtonItem = UIBarButtonItem(title: "", style: .plain, target: nil, action: nil)
    }
}

2.修改TabView选中的颜色

.accentColor(.blue)

3.Text换行以及设置换行后的对齐方式

 Text(title)
 .width(((kScreenW - 60) / 4 - 10))
 .lineLimit(nil)
 .multilineTextAlignment(.center)