带有白色边框的 alertController

Question

我创建了一个带有操作 sheet 和两个按钮的警报控制器。由于 actionsheet 将具有圆角边缘，在屏幕上，在四个角上，会出现白色。我尝试更改 alertcontroller 的背景颜色，但那会使操作 sheet 变为具有锐边而不是圆形边框的矩形。我尝试将视图背景颜色设置为清除颜色也尝试设置边界半径。这是我的操作 sheet。我希望那些白边不可见。

还有，如何更改取消的背景颜色。

let cancelAction = UIAlertAction(title: "Cancel".localize(), style: .cancel) { _ in
    // this is where I am creating the cancelAction
}

编辑 - 1：为 alertcontroller 添加代码

func showActionSheet(_ changeAction: UIAlertAction) {
    let alertController = UIAlertController(title: "", message: "Here is my alert text".localize(), preferredStyle: .actionSheet)

    alertController.view.tintColor = StyleKit.goldenColor
    let attributedString = NSAttributedString(string: alertController.message!, attributes: [
        NSForegroundColorAttributeName : StyleKit.whiteColor
        ])
    alertController.setValue(attributedString, forKey: "attributedMessage")
    if let subview = alertController.view.subviews.first, let alertContentView = subview.subviews.first {
        for innerView in alertContentView.subviews {
            innerView.backgroundColor = StyleKit.popoverDefaultBackgroundColor

        }

    }
    let cancelAction = UIAlertAction(title: "Cancel".localize(), style: .cancel) { _ in
        self.doneButton.isEnabled = true
    }

    alertController.addAction(changeAction)
    alertController.addAction(cancelAction)
    self.present(alertController, animated: true)
}

Answer 1

这里是UIAlertActionactionSheet

这个白边的解决方法

let actionSheet = UIAlertController.init(title: nil, message: nil, preferredStyle: .actionSheet)

if let subview = actionSheet.view.subviews.first, let actionSheet = subview.subviews.first {
    for innerView in actionSheet.subviews {
        innerView.backgroundColor = .purple
        innerView.layer.cornerRadius = 15.0
        innerView.clipsToBounds = true
    }
}

actionSheet.addAction(UIAlertAction.init(title: "Take Photo", style: UIAlertActionStyle.default, handler: { (action) in

}))
actionSheet.addAction(UIAlertAction.init(title: "Choose Photo", style: UIAlertActionStyle.default, handler: { (action) in

}))
actionSheet.addAction(UIAlertAction.init(title: "Cancel", style: UIAlertActionStyle.cancel, handler: { (action) in
}))

actionSheet.view.tintColor = .orange

self.present(actionSheet, animated: true, completion: nil)

更新为十六进制颜色

Github : https://github.com/BhaveshDhaduk/AlertControllerSwift

带有白色边框的 alertController

alertController with white borders

ios

swift

uialertcontroller