Android design support and other library give gradle build error: “headerLayout” has already been defined

Question

I would like to add the design suppport library (com.android.support:design:22.2.0) but I got this error message:

"headerLayout" has already been defined

I tried to find which library use this from my library list and maybe this one: https://github.com/traex/ExpandableLayout

How can I use theme same time? Thank you!

Edit: here is some detail:

Error:(1) Attribute "headerLayout" has already been defined ...

...debug\\values\\values.xml:440: error: Attribute "headerLayout" has already been defined

And this is the 440. line:

<declare-styleable name="NavigationView">
    <attr name="android:background"/><attr name="android:fitsSystemWindows"/>
    <attr name="android:maxWidth"/><attr name="elevation"/>
    <attr format="reference" name="menu"/>
    <attr format="color" name="itemIconTint"/>
    <attr format="color" name="itemTextColor"/>
    <attr format="reference" name="itemBackground"/>
    <attr format="reference" name="headerLayout"/>
</declare-styleable>

and I found another item with this reference name, which is come from ExpandableLayout:

<declare-styleable name="ExpandableLayout">
    <attr format="reference" name="headerLayout"/>
    <attr format="reference" name="contentLayout"/>
    <attr format="integer" name="duration"/>
</declare-styleable>

What is the solution? Because I can't modify these properties.

Answer 1

It would be more useful if you post your Error log and a code snippet for the affected code.

It does not seem like a dependency error, check to see if you have a variable called headerLayout and see you have that declared more than once.

Edit:

A workaround would be to change one of the name "headerLayout" to something else. Of course all reference to it must also be updated. This is an ambiguity error.

Answer 2

This is an old question but i will answer anyway, maybe will help someone.

Change de version of ExpandableLayout to:

compile 'com.github.traex.expandablelayout:library:1.3'

Than you will have other issues:

Error:(16) No resource identifier found for attribute 'contentLayout' in package .... 

change:

contentLayout ---> el_contentLayout
headerLayout  ---> el_headerLayout

if you call the contentLayout or header layout in JAVA, change:

getHeaderRelativeLayout()  ---->  getHeaderLayout()
getContentRelativeLayout() ---->  getContentLayout()

and everything will work just fine :)