Support auto-submit on selection (skipSubmitButton)

🚨 IMPORTANT

This issue is likely user-facing in the main PostHog app, see surveyVersionRequirements.ts. If you delete or close this issue, be sure to update the version requirements list here.

Summary

The Android SDK does not support the skipSubmitButton feature for surveys. This feature allows single-choice, multiple-choice, and rating questions to automatically submit when a selection is made, without requiring the user to press a submit button.

Current State

• The skipSubmitButton field is not present in RatingSurveyQuestion, SingleSurveyQuestion, or MultipleSurveyQuestion classes in SurveyQuestion.kt
• Since Android uses a delegate pattern, integrators building custom UIs cannot access this field

Expected Behavior

When a question has skipSubmitButton: true:

• For single-choice questions: submit automatically when an option is selected
• For rating questions: submit automatically when a rating is selected
• The submit button should be hidden for these questions

Implementation Notes

Since Android uses a delegate pattern without built-in UI:

1. Add skipSubmitButton: Boolean? field to relevant question classes in posthog/src/main/java/com/posthog/surveys/SurveyQuestion.kt
2. Update PostHogDisplaySurveyQuestion to expose this field to integrators
3. Document the expected behavior for integrators building custom UIs

Reference Implementation

See posthog-js browser: packages/browser/src/extensions/surveys/components/QuestionTypes.tsx

Tracking

This is tracked in the survey SDK feature parity issue: https://github.com/PostHog/posthog/issues/45658

This issue was generated by Claude during a Surveys SDK audit.

Start with posthog/src/main/java/com/posthog/surveys/SurveyQuestion.kt and trace how PostHogDisplaySurveyQuestion exposes question fields to custom UI integrators. Compare the browser behavior in packages/browser/src/extensions/surveys/components/QuestionTypes.tsx, then verify that single-choice and rating selections can expose skipSubmitButton and that integrators have enough information to hide the submit button and auto-submit.