More than Nexus, Better than Nexus.

This slide used at GDG Korea Android Oct, 2015 monthly meetup.

Transcript

1. AOSP로 넥서스 보다 더 넥서스처럼 만들기 More than Nexus, Better than Nexus.
2. Nexus 4 (2012) • Android 4.2 (2012) • Android 4.3 • Android 4.4 (2013) • Android 5.0 (2014) • Android 5.1 • Android 6.0 (2015) Image Source
3. Android M on Nexus 4!!!
4. 그런데 빌드를 끝내고 나면....
5. (C) 이말년 Image Source
6. Agenda • What is Android Open Source Project? • Following Nexus • More than Nexus, Better than Nexus
7. What is Android Open Source Project?
8. Hosted on AOSP
9. How to build Android Source code Downloading and Building
10. Nexus Series 제조사 제품 이름 hardware product Huawei Nexus 6P angler? ? LG Nexus 5X bullhead bullhead Motorola Nexus 6 shamu shamu LG Nexus 5 hammerhead hammerhead ASUS Nexus 7(2013) flo, deb flo, deb LG Nexus 4 mako mako Samsung Galaxy Nexus tuna maguro,toro Samsung Nexus S herring crespo
11. Android Emulator Goldfish ランチュウ（蘭鋳、蘭虫、卵虫）Ranchu Image Source Image Source
12. Nexus Series 제조사 제품 이름 hardware product Nexus branded product Huawei Nexus 6P angler? ? ? LG Nexus 5X bullhead bullhead bullhead Motorola Nexus 6 shamu shamu shamu LG Nexus 5 hammerhead hammerhead heammerhead ASUS Nexus 7(2013) flo, deb flo, deb razor, razorg LG Nexus 4 mako mako occam Samsung Galaxy Nexus tuna maguro,toro yakju,takju,mysid Samsung Nexus S herring crespo soju
13. mako occam
14. 무엇부터 시작해 야 하나? Following Nexus Be copycat
15. Image Source mako occam
16. system/app: BackupTestApp Development HTMLViewer PicoTts BasicDreams DevelopmentSettings KeyChain PrintSpooler Browser DocumentsUI LatinIME Protips Calculator DownloadProviderUi LegacyCamera QuickSearchBox Calendar Email LiveWallpapersPicker SdkSetup CaptivePortalLogin EmulatorSmokeTests Music SoundRecorder CertInstaller Exchange2 NetSpeed UserDictionaryProvider CustomLocale Fallback OpenWnn webview DeskClock Gallery PacProcessor system/app: BasicDreams DMAgent GoogleContactsSyncAdapter Maps Bluetooth DocumentsUI GoogleEars MediaShortcuts BluetoothMidiService DownloadProviderUi GoogleHindiIME Music2 Books Drive GoogleHome NewsstandStub CalculatorGoogle EditorsDocsStub GooglePinyinIME 중간 생략 CalendarGooglePrebuilt EditorsSheetsStub GoogleTTS Videos CaptivePortalLogin EditorsSlidesStub Hangouts Wallet CertInstaller FaceLock KeyChain WebViewGoogle Chrome FitnessPrebuilt KoreanIME YouTube CloudPrint2 GoogleCamera LatinImeGoogle talkback
17. 앱 대응 테이블 Emulator (AOSP) Nexus 5 Browser Chrome Calculator CalculatorGoogle Dialer GoogleDialer LegacyCamera GoogleCamera Music Music2 Launcher3 GoogleHome webview WebViewGoogle
18. Android의 숨겨진 심장
19. GAPPS Collection of Google Mobile Services and Apps Search Gapps on Google
20. 패키지만 설치하면 끝? Image Source
21. 각종 상수 및 기본 설정값 • /root/default.prop • /system/build.prop • /system/framework/framework-res.apk • /system/priv-app/SettingsProvider.apk • /system/priv-app/Settings.apk • /system/priv-app/SystemUI.apk • /system/priv-app/TeleService.apk
22. aapt • Android Asset Packaging Tool • 다음 명령어로 .apk 파일에 포함된 리소스 분석 가능 $ aapt d --values resources framework-res.apk spec resource 0x01040029 android:string/default_sms_application: flags=0x00000000 resource 0x01040029 android:string/default_sms_application: t=0x03 d=0x00001e00 (s=0x0008 r=0x00) (string8) "com.android.mms"
23. 수정 전략 • 안드로이드 기본 빌드 스크립트를 이용해 factory image 생성 • 유지 보수가 가능 ◦ bug fix 또는 major 업그레이드가 되었을 때 따라가기 편해야 한다. • 결론 ◦ 원래 코드는 되도록이면 건드리지 말자 ◦ 수정하고 싶으면 원래 코드 바깥에서 건드리자
24. 되는데요... Image Source
25. 상수 교체 (system property) PRODUCT_PROPERTY_OVERRIDES := \ ro.com.android.dataroaming=false \
26. Resource 교체 기본 리소스: frameworks/base/core/res/res/values/config.xml /drawable-mdpi/ic-search.png 특정 기기용 리소스: device/lge/occam/overlay/frameworks/base/core/res/res/
27. Resource 교체 PRODUCT_PACKAGE_OVERLAYS := \ device/lge/occam/overlay out-occam-user/host/linux-x86/bin/aapt package blahblah -S device/lge/occam/overlay/frameworks/base/core/res/res -S device/lge/mako/overlay/frameworks/base/core/res/res -S frameworks/base/core/res/res
28. 앱 교체 include $(CLEAR_VARS) LOCAL_MODULE := Chrome LOCAL_SRC_FILES := com.android.chrome.apk LOCAL_MODULE_CLASS := APPS LOCAL_MODULE_TAGS := optional LOCAL_OVERRIDES_PACKAGES := Browser LOCAL_CERTIFICATE := PRESIGNED LOCAL_MODULE_OWNER := google include $(BUILD_PREBUILT)
29. 앱 교체 PRODUCT_PACKAGES := \ Chrome \
30. 빌드 시작
31. 빌드 끝
33. More than Nexus, Better than Nexus.
34. Unlock hidden feature.
35. Improve performance
36. Add new feature
39. Conclusion • You can build your own Real Nexus image without modification source codes on AOSP. • You can unlock or add several features, and improve your experiences
40. References • http://s.android.com/ • How to build Android Marshmallow on Nexus 4 • https://github.com/ganadist/device_lge_mako • https://github.com/ganadist/device_lge_occam • https://github.com/ganadist/gms_addon/tree/android-6.0.0_r1