Android DataBinding Custom Binding Adapter Warning

Question

I followed the data binding documentation for Custom Binding Adapter for image loading from official Android Developers site: http://develo

Answer 1

Actually there are still some tutorials which add prefix to the BindingAdapter annotation.

Use @BindingAdapter({"imageUrl"}) without any prefix.

Pro Tip

You will not get warning when using android: prefix in BindingAdapter. Because that is encouraged. I will suggest to use @BindingAdapter("android:src") instead of creating a new attribute.

@BindingAdapter("android:src")
public static void setImageDrawable(ImageView view, Drawable drawable) {
    view.setImageDrawable(drawable);
}

and

@BindingAdapter("android:src")
public static void setImageFromUrl(ImageView view, String url) {
   // load image by glide, piccaso, that you use.
}

Create a new attribute only when you need it.