How to Integrate Apple Pay into a Flutter App Using pay_ios Plugin

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A developer tutorial on DEV Community outlines how to add Apple Pay to a Flutter application using the official pay_ios plugin, which wraps Apple's native PassKit framework. The guide highlights that Apple handles most of the payment flow — including biometrics, tokenization, and UI — making the Dart code minimal. However, the article warns that the trickiest part is the Apple Developer setup, which requires creating a Merchant ID, enabling the Apple Pay capability in Xcode, and generating a Payment Processing Certificate. A common failure point is a mismatch between the merchant ID in code and the entitlement configured in the developer portal, which causes the payment sheet to silently not appear. The tutorial provides a complete Flutter checkout page example using ApplePayClient to present the native payment sheet with item details, supported networks, and contact field requirements.

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