buildTypes cannot be applied to groovy.lang.Closure

For me the problem was not solved by applying the above solution. Instead I had to go to the settings within Android Studio and select "Use gradle wrapper":

In Android Studio select: File\Settings\Build, Execution, Deployment\Build tools\Gradle

(Mac Users: Android Studio\Preferences...\Build, Execution, Deployment\Build tools\Gradle )

Mark: Use default gradle wrapper (default)

This removed all 'cannot be applied to '(groovy.lang.Closure') warnings in the build files.

1 Cut and Paste the "buildTypes" at the same position in "android" section

2 Re Sync Project

I had the same issue. Moving the buildTypes as the last entry in the android section worked for me.

android {
    ...
    buildTypes {
    }
}

To solve this issue, in your Android Studio go to File -> Settings. In settings choose Build, Execution, Deployment -> Build Tools -> Gradle and select "Use default gradle wrapper (recommended)" option.

After rebuild your build.gradle will be totally fine.