swift - 无法将 'NSError'(0x264bd90)类型的值转换为 'NSString'

Question

因此，当我尝试运行此代码并发生错误时，我崩溃了。我不知道如何正确地做。

这是我的功能:

 @IBAction func MobilePay(_ sender: Any) {
        let payment = MobilePayPayment(orderId: "123456", productPrice: 10.0)
        //No need to start a payment if one or more parameters are missing
        if (payment != nil) && ((payment?.orderId.characters.count)! > 0) && ((payment?.productPrice)! >= 0) {
            MobilePayManager.sharedInstance().beginMobilePayment(with: payment!, error: { (Error) in
                print(Error)
                self.alert(message: Error as! String)
            })
        }
    }

和我的错误日志:

错误Domain = com.danskebank.mobilepay代码= 1001“无法打开MobilePay应用程序” UserInfo = {NSLocalizedFailureReason =未安装MobilePay应用程序，NSLocalizedRecoverySuggestion =请安装MobilePay应用程序，然后重试。，NSLocalizedDescription =无法打开MobilePay应用}
无法将类型'NSError'(0x264bd90)的值强制转换为'NSString'(0x264d6b8)。
(lldb)

似乎可以正常打印并且打印了错误，但是我该由谁得到最后一行

Could not cast value of type 'NSError' (0x264bd90) to 'NSString' (0x264d6b8). (lldb)

以及如何解决？

Answer 1

尝试localizedDescription对象的Error属性，如下所示:

self.alert(message: Error.localizedDescription)

Error Domain=com.danskebank.mobilepay Code=1001 "Not able to open the MobilePay app" UserInfo={NSLocalizedFailureReason=MobilePay App is not installed, NSLocalizedRecoverySuggestion=Please install MobilePay app and try again., NSLocalizedDescription=Not able to open the MobilePay app} Could not cast value of type 'NSError' (0x264bd90) to 'NSString' (0x264d6b8). (lldb)