Do's and Don'ts for Android development, by Futurice developers
Best practices in Android development
Use Gradle and its recommended project structure
Put passwords and sensitive data in gradle.properties
Don't write your own HTTP client, use Volley or OkHttp libraries
Use the Jackson library to parse JSON data
Avoid Guava and use only a few libraries due to the 65k method limit
Use Fragments to represent a UI screen
Use Activities just to manage Fragments
Layout XMLs are code, organize them well
Use styles to avoid duplicate attributes in layout XMLs
Use multiple style files to avoid a single huge one
Keep your colors.xml short and DRY, just define the palette
Also keep dimens.xml DRY, define generic constants
Do not make a deep hierarchy of ViewGroups
Avoid client-side processing for WebViews, and beware of leaks
Use Robolectric for unit tests, Robotium for connected (UI) tests
Use Genymotion as your emulator
Always use ProGuard or DexGuard
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