Android databinding set padding if value is true

Question

I want to be able to to be able to set padding values if a boolean is true. The problem is that Android studio cannot parse the layout because it thinks 2dp is a decimal with a value of 2 and then doesn't know what to do with the p. how do I format this so that it understands i mean 2 density pixels.

Data layout:

<data class=".ItemBinding">
    <variable name="isGroupType" type="Boolean"/>
</data>

View layout(whats important):

<android.support.v7.widget.AppCompatImageView
            android:layout_width="64dp"
            android:layout_height="64dp"
            android:paddingBottom='@{isGroupType ? 2dp : 0dp}'
            android:paddingTop='@{isGroupType ? 8dp : 0dp}'
            android:paddingRight='@{isGroupType ? 2dp : 0dp}'
            android:paddingLeft='@{isGroupType ? 2dp : 0dp}'/>

Answer 1

Store padding value in dimen.xml and use it. Please keep habit to write binding string with " " (double quotes)

android:paddingBottom="@{isGroupType ? @dimen/padding_normal : @dimen/padding_null}"

and so on for other paddings also.