在iOS 9.3 / Xcode 7.3中使用StoreKit常量时使用未解析的标识符

SKErrorClienTinvalid
SKErrorPaymentCancelled
SKErrorPaymenTinvalid
SKErrorPaymentNotAllowed
SKErrorStoreProductNotAvailable
SKErrorUnkNown

if transaction.error!.code == SKErrorPaymentCancelled {
    print("transaction Cancelled: \(transaction.error!.localizedDescription)")
}

从iOS 9.3开始,某些StoreKit常量已从SDK中删除.有关更改的完整列表,请参见 StoreKit Changes for Swift.

这些常量已被替换为SKErrorCode枚举和相关值：

SKErrorCode.ClienTinvalid
SKErrorCode.CloudserviceNetworkConnectionFailed
SKErrorCode.CloudservicePermissionDenied
SKErrorCode.PaymentCancelled
SKErrorCode.PaymenTinvalid
SKErrorCode.PaymentNotAllowed
SKErrorCode.StoreProductNotAvailable
SKErrorCode.UnkNown

您应该检查使用枚举的rawValue检查您的transaction.error.code.例：

private func Failedtransaction(transaction: SKPaymenttransaction) {
    print("Failedtransaction...")
    if transaction.error?.code == SKErrorCode.PaymentCancelled.rawValue {
        print("transaction Cancelled: \(transaction.error?.localizedDescription)")
    }
    else {
        print("transaction Error: \(transaction.error?.localizedDescription)")
    }
    SKPaymentQueue.defaultQueue().finishtransaction(transaction)
}

如果在iOS 9.3及更高版本上使用StoreKit创建新应用程序,则应检查这些错误代码而不是旧常量.