Cause: com.android.dex.DexException: Multiple dex files define Lorg/apache/commons/io/IOCase in Studio 3.0

Question

I am developing one project. This is working fine with Android studio 2.3.3, but what happen is when i updated my Android Studio 3.0 and open my project then it can\'t assembled

Answer 1

I agree with @CommonsWare that there is one another lib also contain commons-io in your project.

There is an option to fix this conflict issue in gradle dependency. Add below code in your app level build.gralde file.

configurations.all {
    resolutionStrategy.dependencySubstitution {
        substitute module('org.apache.commons:commons-io:1.3.2') with module('commons-io:commons-io:1.3.2')
    }
}

Reason is that why that 'org.apache.commons:commons-io:1.3.2' is conflict Check this stack overflow question's answer.

Note:- To know more about apache commons collections and its different versions check this answer