[Android][Swift] Rename oncancel to ondismiss in swift and android

[kiftio]

What changes are you making?

Renames the "cancel" terminology to "dismiss" across the Android and Swift SDKs to better reflect the user action of dismissing the checkout sheet rather than cancelling a transaction. This is particularly relevant when the buyer dismisses on the thank you page after a completed order.

**Note** Accelerated chekouts keeps onCancelin this PR, that's happening in the next PR

Specifically:

• Android: CheckoutListener.onCheckoutCanceled() → onCheckoutDismissed(), CheckoutPresentation.onCancel {} → onDismiss {}, and all internal tracking variables (cancelNotified → dismissNotified), log messages, and helper methods (notifyCheckoutCanceled → notifyCheckoutDismissed, cancelAfterSheetDismissAnimation → dismissAfterSheetDismissAnimation) updated accordingly. CheckoutHostConfiguration.onCancelRequest → onDismissRequest.
• Swift: CheckoutDelegate.checkoutDidCancel() → checkoutDidDismiss(), ShopifyCheckout.onCancel {} → onDismiss {}, and the internal onCancelAction/onCancel wiring updated throughout CheckoutViewController and CheckoutWebViewController. Swift API surface JSON updated to reflect the renamed symbols.
• Sample apps and tests: All references to canceled/cancellation updated to dismissed/dismissal, including test names, assertion variables, log messages ("Checkout canceled" → "Checkout dismissed"), and internal log context helpers (isCheckoutCancellation → isCheckoutDismissal, completedCheckoutIdForFollowUpCancellation → completedCheckoutIdForFollowUpDismissal).

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How to test

1. Present a checkout sheet on Android and dismiss it via the close button, back gesture, outside tap, and swipe-down gesture — confirm onDismiss is invoked exactly once in each case.
2. Present a checkout sheet on iOS and dismiss it via the close button and swipe-down gesture — confirm checkoutDidDismiss() is called in each case.
3. Verify that onFail / checkoutDidFail is not triggered on a normal dismissal.
4. Run the existing unit and integration test suites on both platforms and confirm all tests pass.
5. Build and run the Android and Swift sample apps and confirm checkout dismissal is logged as "Checkout dismissed".

---

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]

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

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[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
Android	release AAR	246.4 KiB	246.5 KiB	+114 B

Android file breakdown

File	Base	Head	Delta
classes.jar	260.6 KiB	260.7 KiB	+105 B
res/layout/checkout_view_content.xml	2.2 KiB	2.2 KiB	0 B
res/layout/checkout_sheet_content.xml	2.0 KiB	2.0 KiB	0 B
res/values/values.xml	1.2 KiB	1.2 KiB	0 B
R.txt	1.1 KiB	1.1 KiB	0 B
proguard.txt	798 B	798 B	0 B
AndroidManifest.xml	578 B	578 B	0 B
res/drawable/close.xml	431 B	431 B	0 B
res/menu/checkout_menu.xml	354 B	354 B	0 B
META-INF/com/android/build/gradle/aar-metadata.properties	157 B	157 B	0 B

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]

Install this build

Open Tophat, select your target device, then click Install. Links open on the Mac running Tophat.

SDK	Install
Swift	Install with Tophat
Kotlin	Install with Tophat

Checkout Kit E2E results

Status	Suite	Target	Platform	OS version tag	Device
✅	tests/shared/launch-smoke.yaml	kotlin	android	latest	Google Pixel 9 Android 17.0
✅	tests/shared/launch-smoke.yaml	swift	ios	latest	iPhone 15 iOS 27 Beta

[kiftio]

Merge activity

• Jul 17, 4:08 PM UTC: A user started a stack merge that includes this pull request via Graphite.
• Jul 17, 4:08 PM UTC: @kiftio merged this pull request with Graphite.