Android Data Binding: missing DataBinderMapper class

Question

java.lang.NoClassDefFoundError: android.databinding.DataBinderMapper
        at android.databinding.DataBindingUtil.(DataBindingUtil.java:31)
        a         


        

Answer 1

If you are facing this issue when you run your tests, just add:

kaptTest "androidx.databinding:databinding-compiler:+"

to dependencies on build.gradle files of all your modules.