Re-using Android Custom enum xml attributes

Question

I'm defining a custom attribute in XML that is an enum.It looks something like this:

<declare-styleable name="MyControl">     <attr name="myProperty">         <enum name="None" value="0"/>         <enum name="One" value="1"/>         <enum name="Two" value="2"/>         <enum name="Three" value="3"/>         <enum name="Four" value="4"/>         <enum name="Five" value="5"/>         <enum name="Six" value="6"/>         <enum name="Seven" value="7"/>         <enum name="Eight" value="8"/>         <enum name="Nine" value="9"/>         <enum name="Ten" value="10"/>     </attr> </declare-styleable> 

Suppose now that I want another, unrelated class to use this same set of enum values. Is there a way to do this without resorting to making a copy of the list of enums in the new in the new node?. For instance, something with semantics of something like this:

 <declare-styleable name="MyUnrelatedControl">     <attr name="myProperty" format="[myEnum Format Reference]"/>  </declare-stylable> 

Answer 1

Just define the attribute outside of your control:

<attr name="myProperty" format="enum">     <enum name="None" value="0"/>     <enum name="One" value="1"/>     <enum name="Two" value="2"/>     <enum name="Three" value="3"/>     <enum name="Four" value="4"/>     <enum name="Five" value="5"/>     <enum name="Six" value="6"/>     <enum name="Seven" value="7"/>     <enum name="Eight" value="8"/>      <enum name="Nine" value="9"/>     <enum name="Ten" value="10"/> </attr> 

Then just reuse that for all of your controls:

<declare-styleable name="MyControl">     <attr name="myProperty"/> </declare-styleable>  <declare-styleable name="MyUnrelatedControl">     <attr name="myProperty"/> </declare-styleable>