android - Grade Plugin 3-alpha1 outputFile 导致错误

Question

我正在尝试将项目更新到 Android Studio 3。

build.gradle 文件中不再接受以下代码段。

applicationVariants.all { variant ->

    variant.outputs.each { out ->

        def oFile =out.outputFile  // This line causes failure

        //...
    }
}

错误是一个简单的“无效”，但智能感知表明它是正确的，因为它可以自动完成。

检查 idea.log 显示以下异常:

Caused by: java.lang.RuntimeException: Not valid.
at com.android.ide.common.build.ApkData.getMainOutputFile(ApkData.java:136)
at com.android.build.gradle.internal.api.BaseVariantOutputImpl.getOutputFile(BaseVariantOutputImpl.java:60)
at com.android.build.gradle.internal.api.ApkVariantOutputImpl_Decorated.getOutputFile(Unknown Source)
at org.gradle.internal.metaobject.BeanDynamicObject$MetaClassAdapter.getProperty(BeanDynamicObject.java:228)
at org.gradle.internal.metaobject.BeanDynamicObject.tryGetProperty(BeanDynamicObject.java:171)
at org.gradle.internal.metaobject.CompositeDynamicObject.tryGetProperty(CompositeDynamicObject.java:55)
at org.gradle.internal.metaobject.AbstractDynamicObject.getProperty(AbstractDynamicObject.java:59)
at com.android.build.gradle.internal.api.ApkVariantOutputImpl_Decorated.getProperty(Unknown Source)

我找不到关于 Gradle 4 的文档。这可能是错误还是已弃用的函数？

也提交于:https://issuetracker.google.com/issues/38408231

Answer 1

更新:修复 APK 重命名:

使用all 迭代器而不是each:

android.applicationVariants.all { variant ->
    variant.outputs.all {
        outputFileName = "${variant.name}-${variant.versionName}.apk"
    }
}

---

之前的答案，仍然有效:这是新插件的一个已知问题:

This build error occurs because variant-specific tasks are no longer created during the configuration stage. This results in the plugin not knowing all of its outputs up front, but it also means faster configuration times. As an alternative, we will introduce new APIs to provide similar functionality.

根据Migration Guide，我们需要等待另一种方式来做到这一点 .