How to reduce Apk (.apk) size in android studio

Question

When i run my app size of apk will 21 MB. even i enabled proguard. i use android studio to run project. in project files src folder has 8.62 MB size and lib folder size is 4

Answer 1

Before click Finish when open new project wizard, uncheck backward compatibility(appcompat). This is can reduce from 1.5 MB to 180 KB.