#Android and the DEX #64K Methods Limit
▻https://www.contentful.com/blog/2014/10/30/android-and-the-dex-64k-methods-limit
Apps are limited to a 64K method reference limit. If your app reaches this limit, the build process outputs the following error message:
Unable to execute dex: method ID not in [0, 0xffff]: 65536