Paypal - impossible to complete payment through Paypal app

[venator85]

General information

• SDK/Library version: drop-in 4.1.0
• Environment: both sandbox and production
• Android Version and Device: OnePlus 5T, Android 9.0

Issue description

It is impossible to complete a payment if the Paypal app is installed (and is automatically launched instead of the browser).

Steps to reproduce:

• created an empty android project with androidx, added drop-in 4.1.0, performed the Browser switch setup (app doesn't have underscores in the package name):

<activity android:name="com.braintreepayments.api.BraintreeBrowserSwitchActivity"
    android:launchMode="singleTask">
    <intent-filter>
        <action android:name="android.intent.action.VIEW" />
        <category android:name="android.intent.category.DEFAULT" />
        <category android:name="android.intent.category.BROWSABLE" />
        <data android:scheme="${applicationId}.braintree" />
    </intent-filter>
</activity>

• created super simple activity with a sample client token from the docs page ("Try it now"):

class MainActivity : AppCompatActivity() {
    private val REQUEST_CODE = 2048

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        findViewById<View>(R.id.btn).setOnClickListener {
            val dropInRequest = DropInRequest()
                .clientToken("eyJ2ZXJ.......1vIjoib2ZmIn0=")
            startActivityForResult(dropInRequest.getIntent(this), REQUEST_CODE)
        }
    }

    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        if (requestCode == REQUEST_CODE) {
            if (resultCode == Activity.RESULT_OK) {
                val result = data?.getParcelableExtra<DropInResult>(DropInResult.EXTRA_DROP_IN_RESULT)
                Log.e("result $result", this)
            } else if (resultCode == Activity.RESULT_CANCELED) {
                Log.e("canceled", this)
            } else {
                val error = data?.getSerializableExtra(DropInActivity.EXTRA_ERROR) as Exception
                Log.e("error", error, this)
            }
        } else {
            super.onActivityResult(requestCode, resultCode, data)
        }
    }
}

• on clicking the button, paypal is selected and the paypal app (7.6.0, enrolled with biometric access and a working production account) is launched automatically:
  
• however, when my app is resumed, the drop in activity is stuck on an infinite loading, and no onActivityResult is invoked:

This issue also happens with a production Braintree account.

This issue does NOT happen if the Paypal app is not installed, and so Chrome is used.

[quinnjn]

Thanks for the report! We'll try replicate it and get back to you.

Can you provide the PayPal app version you're experiencing this on? Otherwise, we will try replicate it on the latest Google Play version.

[venator85]

I used the latest available from the Play Store, which is 7.6.0.
I activated the login via fingerprint feature and configured a working production account.

[quinnjn]

We're able to replicate it in Sandbox and Production. We're going to get in touch with PayPal about this issue.

[quinnjn]

Shortly after reporting this issue this flow seems to be working again. I'm continuing to follow up with PayPal on why this happened but the issue is resolved.

[venator85]

Hi Quinn, sorry but I'm still experiencing this issue. I also tried to update the Paypal app to version 7.7.3 (which I just received).

[venator85]

Hi, any news about this issue? Thanks