How Can I Pass Values from Gradle to My Java Code?

Passing Values from Gradle to Java

Gradle provides two methods for passing values from Gradle to Java:

1. Generating Java Constants:

By adding buildConfigField to the buildTypes block in your build.gradle file, you can create Java constants accessible through the BuildConfig class:

android {
    buildTypes {
        debug {
            buildConfigField "int", "FOO", "42"
            buildConfigField "String", "FOO_STRING", "\"foo\""
            buildConfigField "boolean", "LOG", "true"
        }

        release {
            buildConfigField "int", "FOO", "52"
            buildConfigField "String", "FOO_STRING", "\"bar\""
            buildConfigField "boolean", "LOG", "false"
        }
    }
}

You can then access these constants from Java using BuildConfig.FOO or BuildConfig.LOG.

2. Generating Android Resources:

Using resValue in the buildTypes block, you can create Android resources that can be accessed in Java via the standard methods:

android {
    buildTypes {
        debug {
            resValue "string", "app_name", "My App Name Debug"
        }
        release {
            resValue "string", "app_name", "My App Name"
        }
    }
}

You can access these resources using @string/app_name or R.string.app_name.

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