自定义实现个Factory，可以用来解析自定义的属性。
public interface Factory {

        /**

         * Hook you can supply that is called when inflating from a LayoutInflater.

         * You can use this to customize the tag names available in your XML

         * layout files.

         *

         * <p>

         * Note that it is good practice to prefix these custom names with your

         * package (i.e., com.coolcompany.apps) to avoid conflicts with system

         * names.

         *

         * @param name Tag name to be inflated.

         * @param context The context the view is being created in.

         * @param attrs Inflation attributes as specified in XML file.

         *

         * @return View Newly created view. Return null for the default

         *         behavior.如果返回一个view， 那么就会直接加入到原有View树中去。 如果返回null，则会走原来类似于onCreate的方法。

         */

        public View onCreateView(String name, Context context, AttributeSet attrs);

    }

　　　　 mLayoutMode = new BDLayoutMode(); // 针对该Activity的一些存储

        mLayoutInflateFactory = new BDLayoutInflateFactory(); //自定义的LayoutInflateFactory

        mLayoutInflateFactory.setViewMode(mLayoutMode);

        getLayoutInflater().setFactory(mLayoutInflateFactory); //  给该Activitry设置factory