[ReactNative] Rename oncancel to ondismiss in swift and android

[kiftio]

What changes are you making?

Renames the checkout cancellation callback to better reflect its intent across both platforms:

• Android: onCheckoutCanceled() → onCheckoutDismissed() in CustomCheckoutListener
• iOS: checkoutDidCancel() → checkoutDidDismiss() in the CheckoutDelegate extension
• Updates the TypeScript type definition comment to reference DefaultCheckoutListener.onCheckoutDismissed instead of DefaultCheckoutEventProcessor.onCheckoutCanceled

The rename aligns the naming convention with the underlying SDK's terminology, making it clearer that this event fires when the buyer dismisses the checkout sheet (e.g. tapping the close button) rather than implying the buyer explicitly cancelled their purchase.

How to test

1. Present a checkout sheet on both Android and iOS.
2. Dismiss the checkout sheet by tapping the close button.
3. Verify the onClose callback fires as expected on both platforms.
4. Run the Android unit tests in ShopifyCheckoutKitModuleTest and confirm all tests pass.
5. Run the iOS integration tests in ShopifyCheckoutKitTests and confirm testCheckoutDidDismissDismissesCheckoutSheetFromRCTWrapper passes.

---

Before you merge

Important

• I've added tests to support my implementation
• I have read and agree with the Contribution Guidelines
• I have read and agree with the Code of Conduct
• I've updated the relevant platform README (platforms/swift/README.md and/or platforms/android/README.md)

---

Releasing a new Swift version?

• I have bumped the version in ShopifyCheckoutKit.podspec
• I have bumped the version in platforms/swift/Sources/ShopifyCheckoutKit/ShopifyCheckoutKit.swift
• I have updated the SwiftPM/CocoaPods version snippets in platforms/swift/README.md (major version only)

Releasing a new Embedded Checkout Protocol version?

• I have bumped embeddedCheckoutProtocolAndroid in platforms/android/gradle/libs.versions.toml
• I have updated protocol/languages/kotlin/embedded-checkout-protocol/api/embedded-checkout-protocol.api if the public API changed

Releasing a new Android version?

• I have bumped checkoutKitAndroid in platforms/android/gradle/libs.versions.toml
• I have updated the Gradle/Maven version snippets in platforms/android/README.md

Tip

See the Contributing documentation for the full release process per platform.

[kiftio]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• [ReactNative] Rename oncancel to ondismiss in swift and android #483 👈 (View in Graphite)
• [Swift] Updates accelerated checkouts to use onDismiss #486
• [Android][Swift] Rename oncancel to ondismiss in swift and android #482
• main

This stack of pull requests is managed by Graphite. Learn more about stacking.

[github-actions]

React Native — Coverage Report

Lines	Statements	Branches	Functions
	91.85% (327/356)	87.98% (183/208)	100% (86/86)

[github-actions]

Package Size

Platform	Artifact	Base	Head	Delta
React Native	npm tarball	103.1 KiB	103.1 KiB	+5 B

React Native file breakdown

File	Base	Head	Delta
node_modules/@shopify/checkout-kit-protocol/src/generated/Models.ts	85.4 KiB	85.4 KiB	0 B
node_modules/@shopify/checkout-kit-protocol/src/generated/Models.d.ts	53.0 KiB	53.0 KiB	0 B
ios/ShopifyCheckoutKit.swift	15.0 KiB	15.0 KiB	+2 B
ios/AcceleratedCheckoutButtons.swift	14.0 KiB	14.0 KiB	0 B
lib/commonjs/index.js	13.1 KiB	13.1 KiB	0 B
src/components/AcceleratedCheckoutButtons.tsx	12.9 KiB	12.9 KiB	0 B
src/index.ts	12.5 KiB	12.5 KiB	0 B
lib/commonjs/components/AcceleratedCheckoutButtons.js	11.4 KiB	11.4 KiB	0 B
android/src/main/java/com/shopify/reactnative/checkoutkit/ShopifyCheckoutKitModule.java	11.1 KiB	11.1 KiB	0 B
lib/module/index.js	10.4 KiB	10.4 KiB	0 B
lib/commonjs/components/AcceleratedCheckoutButtons.js.map	10.3 KiB	10.3 KiB	0 B
lib/module/components/AcceleratedCheckoutButtons.js	10.2 KiB	10.2 KiB	0 B
node_modules/@shopify/checkout-kit-protocol/src/generated/ProtocolNotifications.ts	9.5 KiB	9.5 KiB	0 B
lib/module/components/AcceleratedCheckoutButtons.js.map	9.1 KiB	9.1 KiB	0 B
src/index.d.ts	8.9 KiB	8.9 KiB	-5 B
lib/module/index.js.map	8.2 KiB	8.2 KiB	0 B
src/present-dispatcher.ts	8.0 KiB	8.0 KiB	0 B
lib/commonjs/index.js.map	7.7 KiB	7.7 KiB	0 B
node_modules/@shopify/checkout-kit-protocol/src/generated/ProtocolNotifications.d.ts	7.6 KiB	7.6 KiB	0 B
node_modules/@shopify/checkout-kit-protocol/src/generated/ProtocolRenameMap.ts	7.2 KiB	7.2 KiB	0 B
…and 110 smaller files

Measured from the PR base SHA and PR head SHA. The file breakdown shows uncompressed sizes within each package artifact, so individual files do not sum to the compressed artifact total. This comment reports package artifact sizes only; it is not a final app binary-size report.

[bitrise]

Checkout Kit E2E results

Status	Suite	Target	Platform	OS version tag	Device

Warning

Expected 2 runs, received 0 — 2 did not report. Missing runs count as failures until every run reports.