Issue with purchases_ui_flutter Subscription Bypass on Android via Back Button

[Errechydy]

• I have updated Purchases SDK to the latest version
• I have read the Contribution Guidelines
• I have searched the Community
• I have read docs.revenuecat.com
• I have searched for existing Github issues

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Environment

• Output of flutter doctor
• Version of purchases-flutter:
• Testing device version Android API 30.
• How often the issue occurs: All the time
• Debug logs that reproduce the issue
• Steps to reproduce: Show the paywall by calling this:

await RevenueCatUI.presentPaywallIfNeeded(
        entitlementIDRevenueCat,
        displayCloseButton: false,
        );

Then tap on the Back button on the phone, the paywall will disappear, even thought the displayCloseButton: false

Describe the bug

The problem arises when the back button on an Android device is pressed while the paywall is displayed. Instead of maintaining the paywall as expected, it disappears, allowing users to access the app's premium content without subscribing.

Additional context

[RCGitBot]

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[Jethro87]

Hi @Errechydy, thanks for bringing this up. Unfortunately, we don't yet have a way to override the physical Android back button. What you could do for now is to await the presentPaywallIfNeeded method and then check CustomerInfo for active entitlements. If the user doesn't have an active entitlement, you could call presentPaywallIfNeeded again.

Alternatively, you could use the PaywallView widget and conditionally show it based on active entitlements - docs.