How to set Image resource to ImageView using DataBinding

The answer:

define:

@BindingAdapter({"android:src"})
public static void setImageViewResource(ImageView imageView, int resource) {
    imageView.setImageResource(resource);
}

use:

<ImageView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:scaleType="center"
    android:src="@{viewModel.imageRes, default=@drawable/guide_1}"/>

I tried this, and it works for me (buildToolsVersion: 24.0.1):

<ImageView
    android:layout_width="50dp"
    android:layout_height="50dp"
    android:layout_margin="8dp"
    android:scaleType="centerInside"
    app:imageResource="@{item.avatarResId}"/>

just use app:imageResource to replace android:src, android:src="@{item.avatarResId}" doesn't works else define a custom @BindAdapter("android:src") for it.

but use app:imageResource doesn't need define a @BindAdapter additionally, because the ImageView has a method called setImageResource(), when you use app:imageResource, it will call setImageResource() automatically.

set image like this,

  <ImageView
        android:layout_width="28dp"
        android:layout_height="28dp"
        android:src="@{model.isActive ? @drawable/white_activated_icon :@drawable/activated_icon}"
        tools:src="@mipmap/white_activated_icon" />