Attempt to present <CFSDK.CFViewController> on <UINavigationController> whose view is not in the window hierarchy

Question

I am new in swift and I am Implementing Cash Free Api Whose process is like this

https://dev.cashfree.com/payment-gateway/integrations/mobile-integration/ios

But I am facing problem while presenting CFViewController it is showing warning

Attempt to present <CFSDK.CFViewController> on <UINavigationController> whose view is not in the window hierarchy!

My code is like this

CFPaymentService().doWebCheckoutPayment(
                        params: self.getPaymentParams(),
                        env: "PROD",
                        callback: self)

While Parameter are

func getPaymentParams() -> Dictionary<String, Any> {
        return [
            "orderId": OrderIdForCashFree,
            "appId": CashFreeAPIKeyFromServer,
            "tokenData" : cftoken,
            "orderAmount": AmountExpectedforServer,
            "customerName": customerNameCashFree,
            "orderNote": orderNoteCashFree,
            "orderCurrency": "INR",
            "customerPhone": customerPhoneCashFree,
            "customerEmail": customerEmailCashFree,
            "notifyUrl": ""
        ]
    }

Please Help!

Tarun Tyagi Tarun Tyagi · Accepted Answer · 2021-06-15T06:47:50

The warning reads better like this -

Attempt to present <CFSDK.CFViewController> 
on <UINavigationController>
whose view is not in the window hierarchy!

Seems like you are calling this method way too early - maybe in viewDidLoad()

CFPaymentService().doWebCheckoutPayment(
    params: self.getPaymentParams(),
    env: "PROD",
    callback: self
)

If the view is not properly set up yet, you will receive this warning from UIKit. What you can do is -

Initiate this call from a button tap. /// Recommended (same as a user would interact with it in the app)
Delay the call by some time say 0.5 seconds or 1 second. /// Lazy - for testing purpose only

Both of these will make sure that view has had enough time to show up (before the call is initiated) and the warning will go away.

Attempt to present <CFSDK.CFViewController> on <UINavigationController> whose view is not in the window hierarchy

1 Answers