android apk resource

Recently I watch a video about android app framework.(google I/O 2008)

In the video, the host says that an apk is a collection of component.

My question is, when I'm installing an apk,开发者_JAVA技巧 which directory(/data??) will the resource(such as class.dex and other resources file) be stored?

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The .apk files themselves are stored in /data/app, while the .dex files in /data/dalvik-cache

Addition: App data is stored in /data/data/[PAKAGE_NAME]

If you are curious about what's a .apk file: it's just a regular zip file! As such, you can open it with 7-zip or winrar and look inside. You will find:

• META-INF folder: that's the signature of the package
• res folder: where you will find some .xml and all the .png files (and possibly .mp3 or whatever the package uses). Note that those .xml files will be already compiled, not human-readable.
• AndroidManifest.xml :as the name implies, the manifest.
• classes.dex file: all the java classes compiled to byte code
• resources.arsc file: the layout .xml files