gradle 读取 gradle.properties配置自己定义字段 String

今天gradle代码中需要用到gradle.properties自定义的字符串类型字段，用以判断构建逻辑行为；

因为直接用${}访问等到的类型是object类型，无法和String类型进行直接比较；会报错

String msg = ${BUILD_KEY}

 

String msg = ${BUILD_KEY} + ""

A problem occurred evaluating root project 'abc'.
> Could not find method $() for arguments [build_6agd6j0y7tmg9nybw2ocuza0m$_run_closure1$_closure4$_closure18@71aaa5e3] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.

只要写成下面的形式就可以了

String msg = "${BUILD_KEY}"

来作个笔记