无法获取未知属性“local properties”

Question

我想读取build.gradle中local.properties中定义的属性（如本文所述），因此在根build.gradle文件中有以下内容：

// Top-level build file where you can add configuration options common to all sub-projects/modules.

def localProperties = new Properties()
if (project.rootProject.file('local.properties').canRead()) {
    localProperties.load(project.rootProject.file("local.properties").newDataInputStream())
}

buildscript {

    ext {
        ...
    }

    repositories {
        google()
        jcenter()
        maven {
            url "https://maven.google.com"
        }
    }
    dependencies {
        classpath "com.android.tools.build:gradle:$gradleVersion"
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"


        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()
        maven {
            url "https://maven.google.com"
        }
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

在模块的build.gradle文件中，我有以下内容：

android {
    ...
    defaultConfig {
        ...
        buildConfigField "String", "TOKEN", localProperties['token']
    }
}

但同步后出现以下错误：

无法获取类型为com.android.build.gradle.internal.dsl.defaultconfig得defaultconfig得defaultconfig{name=main,...}得未知属性“local properties”.

我错在哪？如何解决这个问题？

Answer 1

我遇到了点麻烦。变量localproperties不是内置的，而是您自己定义的。您可以添加

Properties localProperties = new Properties()
    File file = project.rootProject.file('local.properties')
    if (file.exists()) {
        localProperties.load(file.newDataInputStream())
    }

defaultConfig块中的build.gradle。