ios - 无法使用 braintree iOS 呈现 dropIn UI

Question

我正在创建一个支付应用程序并为此使用 braintree。我想使用 braintree dropIn UI。通过 pod 安装 BraintreeDropIn。使用以下代码呈现 dropIn UI。

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?.cancelled == true) {
            print("CANCELLED")
        } else if result != nil {
            // Use the BTDropInResult properties to update your UI
            // result.paymentOptionType
            // result.paymentMethod
            // result.paymentIcon
            // result.paymentDescription
        }
        controller.dismissViewControllerAnimated(true, completion: nil)
    }
    self.presentViewController(dropIn!, animated: true, completion: nil)
}

我从 Tokenization Keys 下的沙盒控制面板获得了 tokenization key ，我将它传递给 showDropIn 函数。仍然没有显示任何内容，没有进入此功能

(BTDropInController(authorization: clientTokenOrTokenizationKey, request: request)
{ (controller, result, error))

Answer 1

尝试使用这个:

    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?.cancelled == true) {
                print("CANCELLED")
            } else if result != nil {
                // Use the BTDropInResult properties to update your UI
                // result.paymentOptionType
                // result.paymentMethod
                // result.paymentIcon
                // result.paymentDescription
            }
         dispatch_async(dispatch_get_main_queue(), ^{
             controller.dismissViewControllerAnimated(true,   completion: nil)
     });
        }
          dispatch_async(dispatch_get_main_queue(), ^{
             self.presentViewController(dropIn!, animated: true, completion: nil)
     });
    }

希望这会奏效...!!