android - 在运行时访问 build.gradle ext

Question

有谁知道如何在运行时访问我的 build.gradle 文件中的内容？

buildscript {
    ext {
        exoplayerVersion = "2.8.2"
    }
}

我想在运行时获取 2.8.2 值，但我不知道该怎么做。感谢您的帮助。

Answer 1

您可以使用 buildConfigField .

示例声明(取自官方文档):

android {
  ...
  buildTypes {
    release {
      // These values are defined only for the release build, which
      // is typically used for full builds and continuous builds.
      buildConfigField("String", "BUILD_TIME", "\"${minutesSinceEpoch}\"")
      resValue("string", "build_time", "${minutesSinceEpoch}")
      ...
    }
    debug {
      // Use static values for incremental builds to ensure that
      // resource files and BuildConfig aren't rebuilt with each run.
      // If they were dynamic, they would prevent certain benefits of
      // Instant Run as well as Gradle UP-TO-DATE checks.
      buildConfigField("String", "BUILD_TIME", "\"0\"")
      resValue("string", "build_time", "0")
    }
  }
}
...

用法:

...
Log.i(TAG, BuildConfig.BUILD_TIME);

更新:

您不能在 Java 代码中访问 ext 属性。只是为了答案的完整性，您可以在项目的其他 gradle 文件中使用这些属性。