Compose Multiplatform iOS集成Google MLKit扫码cinterop生成失败求助

开发Compose Multiplatform应用时，通过CocoaPods在iOS端集成Google MLKit条码扫描器，构建项目时出现以下错误：

Failed to generate cinterop for :composeApp:cinteropGoogleMLKitIosArm64: 
Process 'command '/Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java'' finished with non-zero exit value 1
composeApp:iosArm64Main: cinterop file: /Users/OTB/Desktop/Tkl/composeApp/build/libs/composeApp-iosArm64Cinterop-GoogleMLKitMain.klib does not exist

附带提示：

Possible solution:
- Declare repository providing the artifact, see the documentation at https://docs.gradle.org/current/userguide/declaring_repositories.html 

当前配置如下：

Podfile #

platform :ios, '15.5'

target 'iosApp' do
  # Comment the next line if you don't want to use dynamic frameworks
  use_frameworks!
    pod 'composeApp', :path => '../composeApp'
    pod 'GoogleMLKit/BarcodeScanning', '8.0.0'

  # Pods for iosApp

end

Compose模块build.gradle #

cocoapods {
        summary = "Tkl ios dependency"
        homepage = "tkl.com/homepage"
        version = "1.0"
        podfile = project.file("../iosApp/Podfile")
        ios.deploymentTarget = "15.5"
 
        pod("GoogleMLKit/BarcodeScanning"){
            moduleName ="MLKitBarcodeScanning"
            version = "8.0.0"
            extraOpts += listOf("-compiler-option","-fmodules")
        }
 
    }
 
    listOf(
        iosX64(),
        iosArm64(),
        iosSimulatorArm64()
    ).forEach { iosTarget ->
        iosTarget.binaries.framework {
            baseName = "ComposeApp"
            isStatic = true
        }
 
    }
sourceSets {
 
        androidMain.dependencies {
            implementation(compose.preview)
            implementation(libs.androidx.activity.compose)
            ...

        }
        commonMain.dependencies {
            implementation(compose.runtime)
            implementation(compose.foundation)
            ...
          
        }
        iosMain.dependencies {
            implementation(libs.ktor.client.darwin)
        }}

求问如何正确集成Google MLKit条码扫描Pod到Compose Multiplatform的iOS端，需要可行方案或示例。

解决方案 #

1. 移除Pod依赖重复声明 #

当前build.gradle和Podfile同时声明了GoogleMLKit/BarcodeScanning，会导致依赖冲突。只保留build.gradle中的声明，修改Podfile如下：

platform :ios, '15.5'

target 'iosApp' do
  use_frameworks!
  pod 'composeApp', :path => '../composeApp'
end

2. 优化cinterop配置 #

Google MLKit的框架结构需要额外参数才能让cinterop正确识别，更新build.gradle中的Pod配置：

pod("GoogleMLKit/BarcodeScanning") {
    moduleName = "MLKitBarcodeScanning"
    version = "8.0.0"
    extraOpts += listOf(
        "-compiler-option", "-fmodules",
        "-framework", "MLKitBarcodeScanning",
        "-I", "\${PODS_ROOT}/GoogleMLKit/BarcodeScanning/Frameworks"
    )
}

3. 刷新依赖与清理缓存 #

• 执行Android Studio缓存清理：File -> Invalidate Caches...，选择Invalidate and Restart
• 同步Gradle项目：点击工具栏的「Sync Project with Gradle Files」按钮
• 在iOS项目目录下执行命令更新Pods：

cd iosApp
pod deintegrate
pod install

4. 验证配置有效性 #

重新构建项目后，若仍有错误，检查：

• 确认iOS部署目标15.5符合MLKit 8.0.0的最低要求（支持iOS 13.0+）
• 查看iosApp/Pods/GoogleMLKit/BarcodeScanning目录下是否存在MLKitBarcodeScanning.framework

5. 示例调用代码 #

在iosMain源集中编写MLKit条码扫描的包装代码：

import MLKitBarcodeScanning.*
import platform.CoreImage.CIImage
import platform.UIKit.UIImage

fun scanBarcodeFromImage(image: UIImage): List<String> {
    val ciImage = CIImage(image = image) ?: return emptyList()
    val scanner = BarcodeScanner.barcodeScanner()
    val results = scanner.process(ciImage)
    return results.mapNotNull { it.displayValue }
}

内容的提问来源于stack exchange，提问作者uniqueapps