Build your Android app Faster and Smaller than ever
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The document discusses strategies for building smaller and faster Android apps, specifically focusing on the Line Man app. It provides various tips such as removing unused resources, using the latest Android plugin, and implementing APK splits, which have resulted in significant improvements in app size and build speed. Techniques and configurations for optimizing app development are shared based on insights from the Android Studio team.
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Build your Android app Faster and Smaller than ever
- 1. Build your Android app Faster and Smaller than ever Jirawat Karanwittayakarn Technology Evangelist, LINE THAILAND
- 2. Agenda • Overview of LINE MAN • Tips for smaller app builds • Techniques for faster app builds
- 3. AN ON-DEMAND ASSISTANT APP WITH PROFESSIONAL SERVICES
- 4. YOUR DAILY LIFE ASSISTANT FOOD DELIVERY CONVENIENCE GOODS DELIVERY MESSENGER SERVICE POSTAL / PARCEL SERVICE TAXI
- 5. JOINED DEVELOPER BUILD CLINIC ● Developer Build Clinic is one on one consulting in build performance improvement provided by Android Studio Team ● Have been part of it since 2016 ● Throughout the years I have gathered tips and advises from the team
- 6. ! ACTUAL RESULTS MAY VARY
- 7. TIPS FOR BUILDING LINE MAN DRIVER APP SMALLER
- 9. Quick Recommendation: Use APK Analyzer
- 10. Tip 1: Remove Unused Resources
- 11. Tip 2: Add just Dependencies Needed $ ./gradlew app:dependencies
- 12. android { splits { density { enable true // Specifies a list of screen densities Gradle should not create multiple APKs for. exclude 'ldpi', 'mdpi' // Specifies a list of compatible screen size settings for the manifest. compatibleScreens 'small', 'normal', 'large', 'xlarge' } } } Tip 3: Build Multiple APKs for Screen Densities
- 13. android { splits { abi { enable true reset() // By default all ABIs are included, so use reset() and specify that you only want // Specifies a list of ABIs that Gradle should create APKs for. include 'x86', 'x86_64', 'arm64-v8a', 'armeabi-v7a' universalApk false // Specifies that we don’t want to also generate a universal APK that includes all ABIs. } } } Tip 4: Build Multiple APKs for ABIs
- 14. android { defaultConfig { ... ndk { abiFilters 'x86', 'x86_64', 'arm64-v8a', 'armeabi-v7a' // armeabi, mips and mips64 has removed since NDK r17 } } } Tip 5: Build an APK with Specific ABIs
- 15. android { defaultConfig { resConfigs 'en', 'th' ... } } Tip 6: Remove Unused Alternative Resources
- 16. android { buildTypes { release { minifyEnabled true shrinkResources true proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' } } } Tip 7: Shrink Unused Code and Resources
- 17. Tip 8: Use Shape Drawable • Support rectangle, oval, line and ring shapes • Support gradient, rounded corner and outline stroke effects.
- 18. Tip 9: Use WebP • Up to 30% smaller than PNGs • Opaque - API level 15+ • With transparency - API level 18+
- 20. Tip 10: Use VectorDrawable • Smaller than Bitmaps • Resize for different screen densities without loss of image quality • API level 21 and higher • API level <= 20 (use the Support Library)
- 22. TECHNIQUES FOR BUILDING LINE MAN DRIVER APP FASTER Knowledge from Developer Build Clinic by Android Studio Team and “Speeding Up Your Android Gradle Builds” (Google I/O ’17)
- 23. CURRENT BUILDING SPEED ~ 3 mins
- 24. buildscript { repositories { jcenter() + google() } dependencies { - classpath 'com.android.tools.build:gradle:3.0.0' + classpath 'com.android.tools.build:gradle:3.2.1' } ... } Technique 1: Use Latest Android Plugin
- 25. productFlavors { development { minSdkVersion 21 ... } } Technique 2: Avoid Legacy Multidex
- 26. buildTypes { ... debug { splits.abi.enable = false splits.density.enable = false } } Technique 3: Disable Multi APK
- 27. productFlavors { dev { resConfigs('en', 'xhdpi') ... } } Technique 4: Include Minimal Resources
- 28. buildTypes { ... debug { aaptOptions.cruncherEnabled = false ... } } Technique 5: Disable PNG Crunching
- 29. Technique 6: Use Instant Run
- 30. buildTypes { debug { ext.alwaysUpdateBuildId = false ... } } Technique 7: Disable Updating Build ID
- 31. android { dependencies { implementation 'com.android.support:appcompat-v7:+' ... } } Technique 8: Don’t Use Dynamic Versions
- 32. org.gradle.jvmargs=-Xmx4096m -XX:MaxPermSize=1024m -XX: +HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8 org.gradle.daemon=true org.gradle.parallel=true org.gradle.configureondemand=true org.gradle.caching=true android.enableBuildScriptClasspathCheck=false Technique 9: Config gradle.properties
- 33. Available in Android Studio 3.3 Technique 10: Use R8 new code shrinker
- 34. BUILDING SPEED AFTER ~ 1 mins
- 35. CUMULATIVE IMPROVEMENT 3.02m 1m 3X Faster
- 36. ONE MORE THING…
- 37. What’s new in Android Studio 3.2 Android App Bundle
- 38. THANK YOU