无法在 Kotlin Multiplatform 中解析 cinterop IOS 导入

Question

我已按照 Kotlin 文档添加 iOS 依赖项。在我的例子中，依赖项是通过第三方提供的预编译框架。所以我遵循了没有cocoapod的框架的情况。

我将 MyFramework.def 文件放在 /src

language = Objective-C
modules = MyFramework
package = MyFramework

然后我在 Kotlin 对象中的 build.gradle.kts 添加了以下内容 ```

ios {
    binaries {
        framework {
            baseName = "shared"
        }
    }
}
iosArm64() {
    compilations.getByName("main") {
        val JWBLe by cinterops.creating {
            // Path to .def file
            defFile("src/nativeInterop/cinterop/MyFramework.def")

            compilerOpts("-framework", "MyFramework", "-F/Users/user/Projects/MyFramework/ios/SDK")
        }
    }

    binaries.all {
        // Tell the linker where the framework is located.
        linkerOpts("-framework", "MyFramework", "-F/Users/user/Projects/MyFramework/ios/SDK")
    }
}
sourceSets {
    val commonMain by getting
    val commonTest by getting {
        dependencies {
            implementation(kotlin("test-common"))
            implementation(kotlin("test-annotations-common"))
        }
    }
    val androidMain by getting {
        dependencies {
            implementation("com.google.android.material:material:1.2.1")
        }
    }
    val androidTest by getting {
        dependencies {
            implementation(kotlin("test-junit"))
            implementation("junit:junit:4.13")
        }
    }
    val iosMain by getting
    val iosTest by getting
}

然后我构建项目。该库确实被看到了，我看到在外部库中，有一个 shared-cinterop-MyFramework.klib

但是，当我尝试将这个包导入我的代码时 src/iosMain/kotlin/com.example.testapp.shared/platform.kt 我收到图书馆未解决的错误。似乎我还需要向 sourceSets 添加一些东西？但我不确定。

Answer 1

经过一番尝试，我找到了答案。

为 iosArm64 的模块设置了依赖项，该模块不适用于 iosMain。

我创建了另一个文件夹 src/iosArm64Main 并将源文件放在那里。那时它能够解析库。

Answer 2

首先，我注意到 Gradle 脚本不正确。在这种情况下，iosArm64 目标被声明了两次 - 由 target shortcut 声明，并在您配置 cinterop 的地方再次声明。为了避免这种重复，最好像这样配置 cinterop：

ios()
    val iosArm = targets.getByName("iosArm64") as  org.jetbrains.kotlin.gradle.plugin.mpp.KotlinNativeTarget
    // A bit dirty cast, but as I'm sure iosArm64 is the Native target, it should be fine. Needed to make highlighting below work as expected.
    iosArm.apply {
        compilations.getByName("main") {
            val JWBLe by cinterops.creating {
                // Path to .def file
                defFile("src/nativeInterop/cinterop/MyFramework.def")

                compilerOpts("-framework", "MyFramework", "-F/Users/user/Projects/MyFramework/ios/SDK")
            }
        }
        binaries.all {
            // Tell the linker where the framework is located.
            linkerOpts("-framework", "MyFramework", "-F/Users/user/Projects/MyFramework/ios/SDK")
        }
    }

但是，此调整无助于从 iosMain 访问 cinterop 绑定。目前状态commonizer, it can share only platform libraries. So anyway, moving all code utilizing those bindings into the src/iosArm64Main folder is the best option available at the moment. Here go an issue from the official tracker to upvote and subscribe - Support commonization of user-defined libraries.

无法在 Kotlin Multiplatform 中解析 cinterop IOS 导入

Unable to resolve cinterop IOS import in Kotlin Multiplatform

kotlin

kotlin-multiplatform