Braintree 一次性付款请求加载时间过长

Question

I'm using BTPayPalDriver to call a request of one time payment. But the Sign in alert is taking too much time to load on the display.

let payPalDriver = BTPayPalDriver(apiClient: 
FunctionManager.APPDELEGATE().braintreeClient)
payPalDriver.viewControllerPresentingDelegate = self
payPalDriver.appSwitchDelegate = self // Optional        

    let request = BTPayPalRequest(amount: "0.99")
    request.currencyCode = "USD" // Optional; see BTPayPalRequest.h for more options

    payPalDriver.requestOneTimePayment(request) { (tokenizedPayPalAccount, error) in
    if let tokenizedPayPalAccount = tokenizedPayPalAccount {
            print("Got a nonce: \(tokenizedPayPalAccount.nonce)")
}

Answer 1

You should use - (void)appContextWillSwitch:(nonnull id)appSwitcher; delegate callback in order to be notified when the process for showing the PayPal UI will start. You can show a loader until this method is called.

For reference here is a relevant issue in Braintree iOS SDK Github. https://github.com/braintree/braintree_ios/issues/404