1插件化面临的问题

graph LR
subgraph 解决插件组件生命周期调用问题
插件生命周期
end

subgraph 反射AssetManager.assetPath,再通过AssetManager来创建一个新的Resources对象
加载插件资源
end

subgraph newDexClassLoader加载插件apk,从插件ClassLoader中load指定的插件Activity名字,newInstance之后强转为Activity类型使用
加载插件类
end

subgraph 上下文如BaseContext,mResources,activityInfo在attach时反射替换为插件的
直接提供插件Activity给系统
end


插件生命周期-->启动插件Activity

启动插件Activity-->HookInstrumentation的execStartActivity
启动插件Activity-->|Shadow|更改启动Activity方式,调用自定义方法到插件进程,转成插代理Activity
插件生命周期-->AMS回到App端

AMS回到App端-->直接提供插件Activity给系统-->Hack修改宿主PathClassLoader
直接提供插件Activity给系统-->HackActivityThread主线程Handler

AMS回到App端-->提供代理Activity给系统-->生命周期转发给插件Activity
提供代理Activity给系统-->|Shadow|生命周期转发给插件Activity,再转调回代理Activity

Class<?> implClass = classLoader.loadClass("com.xxx.AImpl");
Object implObject = implClass.newInstance();
A a = (A) implObject;

/** Return an AssetManager instance for your application's package. */
public abstract AssetManager getAssets();
/** Return a Resources instance for your application's package. */
public abstract Resources getResources();

protected void loadResources() {  
    try {  
        AssetManager assetManager = AssetManager.class.newInstance();  
        Method addAssetPath = assetManager.getClass().getMethod("addAssetPath", String.class);  
        addAssetPath.invoke(assetManager, mDexPath);  
        mAssetManager = assetManager;  
    } catch (Exception e) {  
        e.printStackTrace();  
    }  
    Resources superRes = super.getResources();  
    mResources = new Resources(mAssetManager, superRes.getDisplayMetrics(),  
            superRes.getConfiguration());  
    mTheme = mResources.newTheme();  
    mTheme.setTo(super.getTheme());  
}

val packageManager = hostAppContext.packageManager
val packageArchiveInfo = packageManager.getPackageArchiveInfo(
        archiveFilePath,
                 PackageManager.GET_ACTIVITIES
                    or PackageManager.GET_META_DATA
                    or PackageManager.GET_SERVICES
                    or PackageManager.GET_PROVIDERS
                    or PackageManager.GET_SIGNATURES
)
packageArchiveInfo.applicationInfo.nativeLibraryDir = installedApk.libraryPath
packageArchiveInfo.applicationInfo.dataDir = dataDir.absolutePath
packageArchiveInfo.applicationInfo.publicSourceDir = archiveFilePath
packageArchiveInfo.applicationInfo.sourceDir = archiveFilePath

packageManager.getResourcesForApplication(packageArchiveInfo.applicationInfo)

getResourcesForApplication控制AssetManager加载插件路径里的资源：
createAssetManager(ResourcesKey):358, ResourcesManager (android.app), ResourcesManager.java
createResourcesImpl(ResourcesKey):490, ResourcesManager (android.app), ResourcesManager.java
getOrCreateResources(IBinder, ResourcesKey, ClassLoader):787, ResourcesManager (android.app), ResourcesManager.java
getResources(IBinder, String, String[], String[], String[], int, Configuration, CompatibilityInfo, ClassLoader):853, ResourcesManager (android.app), ResourcesManager.java
getTopLevelResources(String, String[], String[], String[], int, LoadedApk):1940, ActivityThread (android.app), ActivityThread.java
getResourcesForApplication(ApplicationInfo):1420, ApplicationPackageManager (android.app), ApplicationPackageManager.java
create(PackageInfo, String, Context):32, CreateResourceBloc (com.tencent.shadow.core.loader.blocs), CreateResourceBloc.kt
call():109, LoadPluginBloc$loadPlugin$buildResources$1 (com.tencent.shadow.core.loader.blocs), LoadPluginBloc.kt

class ShadowActivity {
    ContainerActivity containerActivity;
    public void onCreate(Bundle savedInstanceState) {
        containerActivity.superOnCreate(savedInstanceState);
    }
}

class XXXPluginActivity extends ShadowActivity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        savedInstanceState.clear();
        super.onCreate(savedInstanceState);
    }
}

class ContainerActivity extends Activity {
    ShadowActivity pluginActivity;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        pluginActivity.onCreate(savedInstanceState);
    }

    public void superOnCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }
}
仔细思考下现在的调用结果，是不是PluginActivity在正常安装运行和插件环境下运行时行为就一致了？