1. Android Development

2. Agenda System Linux Bionic libc Dalvik SDK Project Compilation Tools
Première partie: Le développement Android natif

3. System Linux Bionic libc Dalvik Base on 2.6
New Lock type: Wakelock (suspend blocker accessible at userspace level)
Hooks for the Android security model
→ Fork A task force is working on contributing back to the Linux kernel, but it's not a priority for Google.
Bionic libc
License: keep GPL out of userspace → BSD
Size: ~200k, loaded in each process
Speed
Native code compiled against bionic and not glibc
Dalvik
Open source:
Executes DEX bytecode
Register based instead of stack based in Java VM
Première partie: Le développement Android natif

4. SDK Project Compilation Tools Eclipse (ADT plugin)
Android command, Ant
Compilation
Compile to Java bytecode
Convert Java bytecode to DEX with dx tool
Tools
DDMS (Dalvik Debug Monitor Server)
ADB (Android Debug Bridge): logcat,
shell, push/pull
AAPT, DEXDUMP (used by other tools to create APK)
- ADT : Android Developper Tools
- Inclus les tools du SDK dans Eclipse
- Facilite la création de projet, l'export d'APK signé, permet de visualiser les GUI XML, ...
- ADB : Android Debug Bridge
- Logcat
- Shell
- Push/pull
- DDMS: Davlik Debug Monitor Server
- Voir les Threads/Process
- Voir l'utilisation du Java Heap
- Dump du Java Heap
- Suivre les allocations des objects Java
- Parcourir les fichiers
- Capture d'écran
- Controler l'émulateur (GPS, appel, sms, ..)
AAPT: Android Asset Packaging Tool, resources de/compiler (androidmanifest.xml, image)
DEXDUMP: get information about dex file

5. APK Classes.dex (Compiled classes)
Resources (strings, layouts, images, ..)
Raw files (native binaries, librairies)
META.INF (files signatures)
Resources.arsc (resources table)
XML Manifest (permissions, ...)
Première partie: Le développement Android natif

6. DEX Structure Decompiling
header, strings ids, type, ids, proto ids, field ids, method ids, class defs, data, link data
Decompiling
bak/smali
dex2jar
Repackage
Apktool

7. Links Première partie: Le développement Android natif
DEX format
(outdated)
Première partie: Le développement Android natif