ActivityProxyHelper类实际上做了什么？

Question

我需要帮助才能了解以下两个类中发生了什么。第一个活动类是启动活动。

public class UnityPlayerNativeActivity
 extends com.unity3d.player.UnityPlayerNativeActivity
{

private ActivityProxyObjectHelper _proxyHelper;
protected void onCreate(Bundle paramBundle)
{
super.onCreate(paramBundle);
try
{
  this._proxyHelper = new ActivityProxyObjectHelper(this);
  this._proxyHelper.onCreate(paramBundle);
  return;
}
catch (Exception paramBundle)
{
  Log.i("Prime31", "Failed to create proxyHelper: " + paramBundle.getMessage());
}
}

}

第二节课是：

public class ActivityProxyObjectHelper
{

private Activity _context;
private List<Class<?>> _proxyClasses = new ArrayList();

public ActivityProxyObjectHelper(Activity paramActivity)
{
  this._context = paramActivity;
}

protected void onCreate(Bundle paramBundle)
{
for (;;)
{
  try
  {
    localObject1 = this._context.getPackageManager().getApplicationInfo(this._context.getPackageName(), 128).metaData;
    localObject2 = ((Bundle)localObject1).keySet().iterator();
    bool = ((Iterator)localObject2).hasNext();
    if (bool) {
      continue;
    }
  }
  catch (PackageManager.NameNotFoundException localNameNotFoundException)
  {
    Object localObject1;
    boolean bool;
    String str;
    Log.i("Prime31", "Failed to load meta-data, NameNotFound: " + localNameNotFoundException.getMessage());
    continue;
  }
  catch (NullPointerException localNullPointerException)
  {
    Log.e("Prime31", "Failed to load meta-data, NullPointer: " + localNullPointerException.getMessage());
    continue;
    Object localObject2 = (Class)localNullPointerException.next();
    try
    {
      ((Class)localObject2).getMethod("onCreate", new Class[] { Bundle.class }).invoke(null, new Object[] { paramBundle });
    }
    catch (Exception localException1) {}
    continue;
  }
  if (((Iterator)localObject1).hasNext()) {
    continue;
  }
  return;
  str = (String)((Iterator)localObject2).next();
  }
 }
}

我需要了解调用启动活动后最初ActivityProxyObjectHelper类的作用。这堂课的目的是什么？为什么要尝试获取元数据？什么是localObject1和localObject2试图做什么？