Putting Your APKs on Diet

Transcript

1. Putting Your APKs on Diet - Brijesh Masrani (@brijeshmasrani)
2. What’s Inside APK?
3. APK Teardown 1. classes.dex 2. res 3. resources.arsc 4. AndroidManifest.xml 5. libs 6. assets 7. META-INF
4. classes.dex Contains compiled application code, transformed into Dex bytecode. • Remove extra code. • Use Proguard ◦ It will try to strip any unused classes and class members, as well as rename any identifiers using shorter names. • Reuse whenever possible Rotate Images, Use Porterduff to change Color
5. Custom Proguard configs
6. Custom Proguard configs
7. res • WebP and SVG • Optimize png images • Remove unused resources
8. libs • ndkFilters https://android.jlelse.eu/controlling-apk-size-when-using-native-libraries-45c6c0 e5b70a • ABI split
9. assets • Keep an eye on assets folder • font files, json files, or game data Optimizations • Downloadable Fonts
10. External Libraries • Use only required libraries ◦ Google Play Services, Analytics, Maps, Awareness, FCM
11. • Be opinionated about resources hdpi, xhdpi and xxhdpi OR xxhdpi • minifyEnabled true • shrinkResources true • defaultConfig { ... resConfigs "en", ... } Gradle Changes
12. General Tips • Use APK analyser
13. References • https://android.jlelse.eu/controlling-apk-size-when-using-native-libraries-45c 6c0e5b70a • https://medium.com/google-developers/smallerapk-part-1-anatomy-of-an-a pk-da83c25e7003 • https://medium.com/google-developers/smallerapk-part-3-removing-unuse d-resources-1511f9e3f761 • https://www.youtube.com/watch?v=xctGIB81D2w • https://www.youtube.com/watch?v=AdfKNgyT438&t=3