Google Pay on Android now supports Express checkout with dynamic callbacks for real-time updates to shipping, taxes, and pricing.
- •onPaymentDataChanged and onPaymentAuthorized callbacks enable real-time updates within the Google Pay sheet
- •Dynamic tax and shipping calculation based on user address happens in-line without closing the interface
- •Upstream button placement on Product or Cart pages enables higher conversion rates
- •Implementation uses play-services-wallet:20.0.0 with Kotlin callbacks extending BasePaymentDataCallbacks
- •AndroidManifest.xml requires service declaration with BIND_PAYMENTS_CALLBACK_SERVICE permission and callbackIntents
This summary was automatically generated by AI based on the original article and may not be fully accurate.
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