libcurl.so duplicate spicified JNI

Put this in build.xml

packagingOptions {

        pickFirst 'lib/armeabi-v7a/libcurl.so'
        pickFirst 'lib/armeabi-v7a/libssl.so'
        pickFirst 'lib/x86/libcurl.so'

    }

Caused by java.lang.unsupportedoperationexception failed to resolve attribute at index 13

I faced this issue while implementing custom image button , here in xml following attribute is not supported



android:background="?attr/xxx"