Paypal browser switch works only api 28+ (including 28)

General information

• SDK/Library version: 4.2.0/4.6.0
• Environment: Sandbox and Production
• Android Version and Device: Android API 26, 27 are not working, from 28 works fine
• Braintree dependencies:

• com.braintreepayments.api:paypal:4.2.0/4.6.0
• com.braintreepayments.api:data-collector:4.2.0/4.6.0

Bug description

We are using the braintree-api to support PayPal payment, and in Fragment we have called the method to waiting for the nonce like this way.

    override fun onResume() {
        super.onResume()

        braintreeClient?.deliverBrowserSwitchResult(activity)?.let { result ->
            if (result.requestCode == BraintreeRequestCodes.PAYPAL) {
                payPalClient?.onBrowserSwitchResult(result) { nonce, error ->
               // send nonce to server
                }
            }
        }
    }

also in activity we have called setIntent(intent) in onNewIntent.

In the case api 28+, if we open the PayPal-WebVie, after the user is authorized and the WebView is closed , the method onResume from Fragment is called, and we can receive the nonce from callback.

But in api 26 and 27, we can’t receive any nonce after user is authorized. Because the activity is newly started, the onNewIntent is not called, and the Fragment is disappeared, the onResume not called.

Actually the problem might be the onNewIntent method was not called.

[F9F8]

@sarahkoop I have found another problem, if you change the default browser from chrome to firefox or opera, it has the same problem as above what i mentioned, although i used android 10 and 11. You could try to use my test app.

[F9F8]

@sarahkoop Thank you for the answer and the investigation, unfortunately this solution won’t help us, because the fragment is deeply integrated, which call the PayPal-Api, it’s not that simple as “FragmentOne” and “FragmentTwo”, and also very difficult to rebinding the data for each fragment.

I can also understand, if Google has a similar problem, it will be difficult to fix it. We are going to show a dialog for the customer, that paypal is currently not support by android 7 and 8.

Thanks again for your support, i really like your api.