alwaysDark style for PaymentSheet not functional in Android apps - system theme always applied

Describe the bug When trying to force dark theme using style='alwaysDark' in initPaymentSheet, Payment Sheet in Android apps do not actually always use dark theme. Instead, they end up getting the system light vs dark theme applied, you can toggle it via system settings to see it switch.

To Reproduce Steps to reproduce the behavior:

1. Run the example app included in this repository. Note that PaymentsUICompleteScreen and PaymentsUICustomScreen both include style='alwaysDark'.
2. In the example app, go to Accept a Payment > Prebuilt UI (either version). Press the button (top on custom/multi-step).
3. Notice on Android that the PaymentSheet theme matches the system theme, alwaysDark is not honoured. iOS PaymentSheet adheres to provided theme.

Expected behavior Android PaymentSheet should always be dark when style='alwaysDark' is set.

Screenshots In all examples, style='alwaysDark' is set.

Android with light system theme

Android with dark system theme

iOS

Smartphone (please complete the following information):

• Device: Pixel 4 AVD
• OS: Android 10
• Browser N/A
• Version SDK 29 on virtual device per RN instructions

Additional context Add any other context about the problem here.

[skyler-stripe]

Thanks for the responses!

We’re looking into customization changes and will keep dark mode toggling in mind. In the mean time, it does seem possible that forcing dark mode at an application level is a solution for those that want to match. According to this you can put this line in your launcher activity’s onCreate and force darkmode.

AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);

I’m hoping that is a good solution/bandaid while we work on more sophisticated customization.

[michelleb-stripe]

@brendanm-stripe This is not something that the android currently supports, but we do have it in our backlog. I will post an update when we have it complete.