Install & platform setup

Add the package, then apply the two platform settings the Flutter template does not set on its own. Everything else the SDK needs it brings with it.

pubspec.yaml

# The package is distributed from Git, not pub.dev.
dependencies:
  rezolvepay_flutter:
    git:
      url: [email protected]:rezolved/rp-sdk-flutter.git
      ref: v1.0.0  # pin a tag, never track a branch

# then:  flutter pub get

iOS

# ios/Podfile - the RezolvePay SDK needs iOS 15 or newer
platform :ios, '15.0'

<!-- ios/Runner/Info.plist - DEBUG builds ONLY, for a local stack over -->
<!-- plain HTTP. Never ship this in a release build.                   -->
<key>NSAppTransportSecurity</key>
<dict>
  <key>NSAllowsLocalNetworking</key>
  <true/>
</dict>

Android

// android/app/src/main/kotlin/<your>/<package>/MainActivity.kt
package com.example.myapp

import io.flutter.embedding.android.FlutterFragmentActivity

// A 3DS challenge is presented as a fragment, so the template
// FlutterActivity is not enough.
class MainActivity : FlutterFragmentActivity()

<!-- android/app/src/main/res/values/styles.xml -->
<!-- The SDK requires an AppCompat/MaterialComponents descendant. -->
<style name="NormalTheme" parent="Theme.MaterialComponents.DayNight.NoActionBar">
  <item name="android:windowBackground">?android:colorBackground</item>
</style>

// android/app/build.gradle.kts
android {
  compileOptions {
    sourceCompatibility = JavaVersion.VERSION_17
    targetCompatibility = JavaVersion.VERSION_17
  }
  defaultConfig { minSdk = 21 }
}

Platform requirements

Platform	Minimum	Also required
iOS	deployment target `15.0`	Nothing else for a production HTTPS backend — but saved cards need the Associated Domains entry under Passkeys.
Android	`minSdk 21`, Java 17	`MainActivity` must extend `FlutterFragmentActivity` — a 3DS challenge is presented as a fragment — and the app theme must descend from `Theme.MaterialComponents`.
Flutter	Dart SDK `^3.11.0`	The SDK's own dependencies come with it; you add nothing else.