Exports unlocked layers with first character "$" to Android resolution PNG's (MDPI, HDPI, XHDPI, XXHDPI, and XXXHDPI) ready to paste into your Android Studio project. For full explanation check out my blog: http://murdochcarpenter.com/illustrator-script-export-android-multi-res-pngs/

Copy and paste the script into your Illustrator Scripts folder. On Windows this is ‘\Program Files\Adobe Illustrator CC 2015\Presets\en_US\Scripts\’ and on Mac ‘\Applications\Adobe Illustrator CC 2015\Presets\en_US\Scripts\’. Then anytime you want to export the marked layers run File > Scripts > ExportAndroidResPNGs.

• Turns off all layer visibility
• Exports each layer that is unlocked and has the first character "$"
• Saves into drawable-mdpi, drawable-hdpi, drawable-xhdpi, drawable-xxhdpi, and drawable-xxxhdpi folders
• Folders are created under "Output" parent folder in same directory as .ai file
• All ready to copy/paste into Android Studio

While this gives you all the PNG assets you need. I would suggest running them through PNGQuant or similar to save on some filesize.