Flutter集成Revolut Payment遇未解析引用错误求助

我正尝试将Revolut Payment集成到Flutter项目中，操作过程中在MainActivity.kt文件里遇到两个编译错误：

• Unresolved reference: RevolutPayEnvironment
• Unresolved reference: RevolutPayments

我的Kotlin代码如下：

package com.example.foodbourge_mobile_app

import androidx.annotation.NonNull
import io.flutter.embedding.android.FlutterActivity
import io.flutter.embedding.engine.FlutterEngine
import io.flutter.plugin.common.MethodChannel
import android.content.Context
import android.content.ContextWrapper
import android.content.Intent
import android.content.IntentFilter
import android.os.BatteryManager
import android.os.Build.VERSION
import android.os.Build.VERSION_CODES

class MainActivity: FlutterActivity() {
  private val CHANNEL = "samples.flutter.dev/revolut_pay"

  override fun configureFlutterEngine(@NonNull flutterEngine: FlutterEngine) {
    super.configureFlutterEngine(flutterEngine)
    fun getBatteryLevel(): Int {
      val batteryLevel: Int
      if (VERSION.SDK_INT >= VERSION_CODES.LOLLIPOP) {
        val batteryManager = getSystemService(Context.BATTERY_SERVICE) as BatteryManager
        batteryLevel = batteryManager.getIntProperty(BatteryManager.BATTERY_PROPERTY_CAPACITY)
      } else {
        val intent = ContextWrapper(applicationContext).registerReceiver(null, IntentFilter(Intent.ACTION_BATTERY_CHANGED))
        batteryLevel = intent!!.getIntExtra(BatteryManager.EXTRA_LEVEL, -1) * 100 / intent.getIntExtra(BatteryManager.EXTRA_SCALE, -1)
      }

      return batteryLevel
    }
    fun payByRevolut(): Int {
      RevolutPayments.revolutPay.init(
            environment = RevolutPayEnvironment.SANDBOX, // Change to MAIN for production
            merchantPublicKey = "10ccaaa5-9316-44e9-9da1-2e714c3310c0",
            requestShipping = false,
            // customer = Customer(
            //     name = "John Doe",
            //     email = "john@example.com",
            //     phoneNumber = "1234567890",
            //     dateOfBirth = "1990-01-01"
            // )
        )

      return 0
    }
    MethodChannel(flutterEngine.dartExecutor.binaryMessenger, CHANNEL).setMethodCallHandler {
      call, result ->
      if (call.method == "getBatteryLevel") {
        val batteryLevel = getBatteryLevel()

        if (batteryLevel != -1) {
          result.success(batteryLevel)
        } else {
          result.error("UNAVAILABLE", "Battery level not available.", null)
        }
      } else {
        result.notImplemented()
      }
    }
  }
}

我已经在Android层级的build.gradle中添加了以下依赖：

implementation "com.revolut:revolutpayments:1.0.0"
implementation "com.revolut:revolutpay:2.2"

怀疑是遗漏了相关导入语句，恳请帮忙解决这两个错误。

解决方案 #

你的推测正确，这两个错误确实是缺少对应Kotlin导入语句导致的，同时需要注意依赖版本兼容性问题，具体解决步骤如下：

1. 添加必要的导入语句
   在MainActivity.kt的import区域添加以下两行：

import com.revolut.revolutpayments.RevolutPayments
import com.revolut.revolutpayments.environment.RevolutPayEnvironment

2. 排查依赖版本冲突
   你同时引入了revolutpayments:1.0.0和revolutpay:2.2，这两个库可能存在版本兼容问题。建议核对官方文档确认正确的依赖组合，或者统一使用最新兼容版本（通常revolutpay是核心库，需根据文档调整依赖配置）。

3. 同步并清理项目
   添加导入后，点击Android Studio的Sync Project with Gradle Files按钮同步项目，再执行Build > Clean Project和Build > Rebuild Project清理编译缓存。

如果导入后仍报错，检查External Libraries目录下是否存在对应的Revolut库文件，若缺失则尝试刷新Gradle依赖或检查网络连接。

内容的提问来源于stack exchange，提问作者Yunesh Shrestha