Proguard 警告“找不到引用的 class packagename.R$string ”與 gradle 3.3.0

Question

將 gradle 插件更新為“3.3.2”后，Proguard 失敗並出現警告。 警告是：“找不到引用的 class packagename.R$string”

它與 gradle 插件“3.2+”一起工作正常

問題可能是因為（根據 3.3 的行為變化）：

Faster R class generation for library projects: Previously, the Android Gradle plugin would generate an R.java file for each of your project's dependencies and then compile those R classes alongside your app's other classes. The plugin now generates a JAR containing your app's compiled R class directly, without first building intermediate R.java classes. 這種優化可以顯着提高包含許多庫子項目和依賴項的項目的構建性能，並提高 Android Studio 中的索引速度。

Answer 1

將以下代碼應用於您的gradle.properties文件。

# Disables R8 for Android Library modules only.
android.enableR8.libraries = false

# Disables R8 for all modules.
android.enableR8 = false