Android_Version_problem

// Add this code below dependency of build.gradle app level

configurations.all {
    resolutionStrategy.eachDependency{
        DependencyResolveDetails details ->
            def requested=details.requested
            if(requested.group=="com.android.support"){
            if(!requested.name.startsWith("multidex")){
                details.useVersion("26.0.1")
            }
        }
    }
}