Question

我的Android项目中有几个构建变体。

如何检查Kotlin代码中正在编译什么变体？我想做一个这样的条件：如果它是本地变体，那么如果它是远程变体，请这样做...

例如这样的东西：

class App extends Component {
  state = {
    page: 0,
  }
  setPageChange = () => {
    setState({ page: props.key })
  }

  render() {
    return (
      <div>
        <NavBar />
        {if (this.state.page === 1) {
          return (<Products />)
        } else if(this.state.page === 2) {
          return (<Contact />)
        } else {
          <Landing />
        }}
        <Footer />
      </div>
    );
  }
}

Answer 1

在构建时，Gradle会生成BuildConfig类，因此您的应用代码可以检查有关当前版本的信息。

查看该类提供的选项：taken from

public final class BuildConfig {
  public static final boolean DEBUG = Boolean.parseBoolean("true");
  public static final String APPLCATION_ID = "com.example.app";
  public static final String BUILD_TYPE = "debug";
  public static final String FLAVOR = "";
  public static final int VERSION_CODE = 1;
  public static final String VERSION_NAME = "";
}

您还可以根据需要定义自定义变量：

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")
    }
  }
}

并使用它：

Log.i(TAG, BuildConfig.BUILD_TIME)
Log.i(TAG, getString(R.string.build_time))

更多info

如何在Kotlin中获取当前的构建变体

1 个答案: