Default interface methods are only supported starting with Android N

Question

I upgraded to android studio 3.1 and I\'m getting the following error:

Default interface methods are only supported starting with Android N (--min-api 24): vo         


        

Answer 1

As CommonsWare mentioned, for reference add this inside the android {...} closure in the build.gradle for your app module to resolve issue:

android {
...
  compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
...
}