Kotlin + DataBindingでハマったこと

build.gradle

dependencies {
    // ... 略
    kapt 'com.android.databinding:compiler:1.0-rc5'
}

kapt {
    generateStubs = true
}

ImageViewBindingAdapter.java

public class ImageViewBindingAdapter {
   @BindingAdapter("bind:imageUrl")
   public static void loadImage(view: ImageView, url: String) {
       Glide.with(view.context).load(url).into(view)
   }
}

ImageViewBindingAdapter01.kt

class ImageViewBindingAdapter {
    companion object {
        @BindingAdapter("bind:imageUrl")
        fun loadImage(view: ImageView, url: String) {
            Glide.with(view.context).load(url).into(view)
        }
    }
}

ImageViewBindingAdapter02.kt

object ImageViewBindingAdapter {
    @BindingAdapter("bind:imageUrl")
    @JvmStatic
    fun loadImage(view: ImageView, url: String) {
        Glide.with(view.context).load(url).into(view)
    }
}

SwipeRefreshLayoutBindingAdapter.java

@BindingMethods({
        @BindingMethod(type = SwipeRefreshLayout.class, attribute = "bind:onRefresh", method = "setOnRefreshListener"),
})
public class SwipeRefreshLayoutBindingAdapter {
}

SwipeRefreshLayoutBindingAdapter01.kt

@BindingMethods(@BindingMethod(type = SwipeRefreshLayout.class, attribute = "bind:onRefresh" , method = "setOnRefreshListener"))
class SwipeRefreshLayoutBindingAdapter

SwipeRefreshLayoutBindingAdapter02.kt

@BindingMethods(
        BindingMethod(type = SwipeRefreshLayout::class, attribute = "bind:onRefresh", method = "setOnRefreshListener")
)
object SwipeRefreshLayoutBindingAdapter {
}