mvppoet-generateactivity.kt

private fun generateActivity() {
  val onCreate = FunSpec.builder("onCreate")
    .addModifiers(KModifier.OVERRIDE, KModifier.PUBLIC)
    .addParameter("savedInstanceState", Bundle::class)
    .addStatement("super.onCreate(savedInstanceState)")
    .addComment("TODO setContentView()")
    .addStatement("mPresenter = %T()", presenterType)
    .addStatement("mPresenter.attachView(this)")
    .build()

  val mvpActivity = TypeSpec.classBuilder(featureName + "Activity")
    .superclass(TypeName.get(Activity::class.java))
    .addSuperinterface(viewType)
    .addProperty(PropertySpec
            .varBuilder("mPresenter", presenterType, KModifier.LATEINIT)
            .build())
    .addFun(onCreate)
    .build()

  KotlinFile.builder(packageName + "." + featureName.toLowerCase(), featureName + "Activity")
    .addType(mvpActivity)
    .build()
    .writeTo(File(rootPath))
}