Android.HowToDesignPluginArchitectureInAndroidApp

There is a tools called "dx", this tool can transfer Java Binary Code into Android Dalvik Binary code.

In Android, Java Binary Code cannot be recognized.

1. 首先解决 "How to load a Java class dynamically on android/dalvik?"

　　可以使用DexClassLoader类来动态加载外部class。

　　DexClassLoader: "A class loader that loads classes from .jar and .apk files containing a classes.dex entry.

　　This can be used to execute code not installed as part of an application." [Ref2] [Tdo1]

2. 接下来解决 "How to use a Java class  which is loaded dynamically in Android/dalvik?"

　　A：采用Java语言本身的Reflection功能。

　　B：采用预定于的接口，插件中的EntryClass来实现该接口。

3. 最后解决 "How to use the asset, like image, audio file?"

　　 

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Reference

1. Android App 插件架构的设计

https://enplug.com/blog/loading-classes-dynamically-on-android-particularly-when-you-have-to-use-them-in-a-third-party-framework-like-libgdx

http://stackoverflow.com/questions/3022454/how-to-load-a-java-class-dynamically-on-android-dalvik

2. DexClassLoader

http://developer.android.com/reference/dalvik/system/DexClassLoader.html

3. Custom Class Loading in Dalvik

http://android-developers.blogspot.com/2011/07/custom-class-loading-in-dalvik.html

Ant的使用

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Todo

1. 研究dalvik包，来看看dalvik包可以为我们带来什么支持?

dalvik.system 

dalvik.bytecode

dalvik.annotation

2. Dive into Android Source

http://android.github.io/

3. Dive Into Ant

Ant的使用，学习