iOS : Add a UIView returned by Braintree to the screen

Question

我正在按照 Braintree 的指南将 dropIn 功能添加到 iOS 应用程序。为了显示 dropIn，我使用以下方法:

func showDropIn(clientTokenOrTokenizationKey: String) {
    let request =  BTDropInRequest()
    let dropIn = BTDropInController(authorization: clientTokenOrTokenizationKey, request: request)
    { (controller, result, error) in
        if (error != nil) {
            print("ERROR")
        } else if (result?.isCancelled == true) {
            print("CANCELLED")
        } else if let result = result {
            let paymentMethod = result.paymentMethod!.nonce
            self.paymentNonce = paymentMethod

            self.paymentLabel.text = result.paymentDescription

            print(result.paymentIcon)
        }

        controller.dismiss(animated: true, completion: nil)
    }
    self.present(dropIn!, animated: true, completion: nil)
}

在用户选择特定付款方式后，我想做的是在屏幕上同时显示说明(“以 XX 结尾”)和卡的图标。我对描述没问题，但我不知道如何显示卡片图标。

下面一行:

print(result.paymentIcon)

返回以下内容:

<BTUIKMasterCardVectorArtView: 0x7fd04ad15280; frame = (0 0; 0 0); opaque = NO; layer = <CALayer: 0x600000230c20>>

根据文档，result.paymentIcon 是一个 UIView。

@property(readonly, nonatomic) UIView *_Nonnull paymentIcon;

A UIView (BTUIKPaymentOptionCardView) that represents the payment option

我已经尝试设置一个 UIView，然后将 paymentIcon 添加为 subview ，但我仍然无法显示它。

let paymentIcon = result.paymentIcon
self.iconView.addSubview(paymentIcon)

Answer 1

您可以使用 BTUIKViewUtil.vectorArtView 方法检索图像并在 UIImageView 中显示，如下所示:

let size = CGSize(width: WIDTH_HERE, height: HEIGHT_HERE)
let imageView = UIImageView(frame: CGRect(origin: .zero, size: size))
imageView.image = BTUIKViewUtil.vectorArtView(for: result.paymentOptionType).image(of: size)

示例 2，使用 paymentIcon View :

let view = result.paymentIcon as? BTUIKVectorArtView
imageView.image = view?.image(of: size)