How to replace a string for a buildvariant with gradle in android studio?

Question

I have two flavors of my project:

flavor1 -> packagename: com.example.flavor1 
flavor2 -> packagename: com.example.flavor2

Now I want

Answer 1

In the current Android Gradle DSL, the ApplicationVariant class has changed and Saad's approach has to be rewritten e.g. as follows:

applicationVariants.all { variant ->
    variant.outputs.each { output ->
        output.processManifest.doLast {
            replaceInManifest(output,
                    'GMAPS_KEY',
                    getGmapsKey(buildType))

            }
        }
    }

def replaceInManifest(output, fromString, toString) {
    def updatedContent = output.processManifest.manifestOutputFile.getText('UTF-8')
        .replaceAll(fromString, toString)
    output.processManifest.manifestOutputFile.write(updatedContent, 'UTF-8')
}

The new DSL also offers a cleaner approach to get directly to the manifest file.