Use Java8 Time&Date API by D8 Library Desugar by koji-1009 · Pull Request #1026 · prolificinteractive/material-calendarview
At AndroidStudio 4.0, we will be able to use D8 Library Desugar. https://developer.android.com/studio/preview/features#j8-desugar https://jakewharton.com/d8-library-desugaring/#backporting-types ...