Android Studio/Gradle中的productFlavor变量

Question

我有一个Android应用程序,具有以下产品风格:

productFlavors {
    local {

    }

    development {


    }

    production {

    }
}

然后在我的底部有以下内容build.grade:

File crashlyticsProperties = new File("${project.projectDir.absolutePath}/fabric.properties")
android.applicationVariants.all { variant ->
    def variantSuffix = variant.name.capitalize()
    def generateResourcesTask = project.tasks.getByName("fabricGenerateResources${variantSuffix}")
    def generatePropertiesTask = task("fabricGenerateProperties${variantSuffix}") << {
        Properties properties = new Properties()
        properties.put("apiSecret", WHAT_GOES_HERE)
        properties.put("apiKey", WHAT_GOES_HERE)
        PropertiesUtils.injectPropertyInFile(crashlyticsProperties, properties, "")
    }
    generateResourcesTask.dependsOn generatePropertiesTask
}

我正在尝试设置api secret/keyfor,crashlytics但我需要能够设置这些取决于我正在构建的产品风格.

properties.put("apiSecret", WHAT_GOES_HERE)
properties.put("apiKey", WHAT_GOES_HERE)

如何设置/获取这些变量？

更新#1

我已将以下内容添加到我的 build.gradle

productFlavors {
    local {
        buildConfigField "String", "CRASHLYTICS_API_SECRET", "1234"
        buildConfigField "String", "CRASHLYTICS_API_KEY", "1234"
    }

    development {
        buildConfigField "String", "CRASHLYTICS_API_SECRET", "1234"
        buildConfigField "String", "CRASHLYTICS_API_KEY", "1234"
    }

    production {
        buildConfigField "String", "CRASHLYTICS_API_SECRET", "1234"
        buildConfigField "String", "CRASHLYTICS_API_KEY", "1234"
    }
}

然后在build.gradle文件的底部我有:

File crashlyticsProperties = new File("${project.projectDir.absolutePath}/fabric.properties")
android.applicationVariants.all { variant ->
    def variantSuffix = variant.name.capitalize()
    def generateResourcesTask = project.tasks.getByName("fabricGenerateResources${variantSuffix}")
    def generatePropertiesTask = task("fabricGenerateProperties${variantSuffix}") << {
        Properties properties = new Properties()
        println "...copying apiSecret for ${variant.name}"
        properties.put("apiSecret", BuildConfig.CRASHLYTICS_API_SECRET)
        println "...copying apiKey for ${variant.name}"
        properties.put("apiKey", BuildConfig.CRASHLYTICS_API_KEY)
        PropertiesUtils.injectPropertyInFile(crashlyticsProperties, properties, "")
    }
    generateResourcesTask.dependsOn generatePropertiesTask
}

然而,这不编译并给我:

错误:(334,1)任务':app:fabricGeneratePropertiesDevelopmentDebug'的执行失败.无法在任务':app:fabricGeneratePropertiesDevelopmentDebug'上找到属性'BuildConfig'.

Answer 1

对于这个错误：

错误：(334, 1) 任务“:app:fabricGeneratePropertiesDevelopmentDebug”执行失败。在任务“：app：fabricGeneratePropertiesDevelopmentDebug”上找不到属性“BuildConfig”。

使用不同的结构，例如：

variant.mergedFlavor.buildConfigFields["CRASHLYTICS_API_SECRET"].value

当然，该解决方案期望BuildConfig定义这样的字段。如果您预计字段不存在，请务必先检查是否存在。

编辑：

如果您想要问题中描述的解决方案：

File crashlyticsProperties = new File("${project.projectDir.absolutePath}/fabric.properties")
android.applicationVariants.all { variant ->
    def variantSuffix = variant.name.capitalize()
    def generateResourcesTask = project.tasks.getByName("fabricGenerateResources${variantSuffix}")
    def generatePropertiesTask = task("fabricGenerateProperties${variantSuffix}") << {
        Properties properties = new Properties()
        println "...copying apiSecret for ${variant.name}"
        properties.put("apiSecret", variant.mergedFlavor.buildConfigFields.get("CRASHLYTICS_API_SECRET").value)
        println "...copying apiKey for ${variant.name}"
        properties.put("apiKey", variant.mergedFlavor.buildConfigFields.get("CRASHLYTICS_API_KEY").value)
        PropertiesUtils.injectPropertyInFile(crashlyticsProperties, properties, "")
    }
    generateResourcesTask.dependsOn generatePropertiesTask
}