build.gradle配置变量，在Activity中使用

build.gradle代码片段 完整版

apply plugin: 'com.android.application'
apply from: rootProject.file('gradle/signing.gradle')
apply plugin: 'android-checkstyle'
apply plugin: 'android-pmd'

android {
    ...

    buildTypes {
        debug {
            signingConfig signingConfigs.debug
            applicationIdSuffix ".debug"
            buildConfigField "boolean", "SHOW_GREETINGS", "Boolean.parseBoolean(\"true\")"
            buildConfigField "String", "GREETINGS", "\"Greetings, My Lord !!!\""
        }
        release {
            signingConfig signingConfigs.releaseKeystore
            buildConfigField "boolean", "SHOW_GREETINGS", "Boolean.parseBoolean(\"false\")"
            buildConfigField "String", "GREETINGS", "\"Hello, World !!!\""
        }
    }

    ...   
}

将build.gradle SYNC以后就可以在 Activity中使用，示例：

boolean isShowGreetings = BuildConfig.SHOW_GREETINGS;     

完整项目地址