Note: This app is stable enough to use but still in beta. Bugs will be gradually fixed and more features will be added. Please be patient and don't rate badly. In case of an issue, please send an email. I shall respond ASAP.
Dict Aide is a StarDict dictionary client for Android with Material design.
Dictionary packs (tar.bz2 & tar.gz) can be extracted from the app itself. You don't have to do anything other than selecting the file.
Dict Aide also supports external SD cards
To view definitions quickly in a popup, you can use my app Text Aide by enabling "Dict Aide" from Views in Define settings
The free version has ads to support development.