自定义控件从xml获取属性值的优雅写法

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public@H_403_2@ LinearLayoutManager@H_403_2@(Context context,AttributeSet attrs,int@H_403_2@ defStyleAttr,int@H_403_2@ defStyleRes) {
        Properties properties = getProperties(context,attrs,defStyleAttr,defStyleRes);
        setOrientation(properties.orientation);
       ....
    }

       public@H_403_2@ static@H_403_2@ Properties getProperties@H_403_2@(Context context,int@H_403_2@ defStyleRes) {
            Properties properties = new@H_403_2@ Properties();
            TypedArray a = context.obtainStyledAttributes(attrs,R.styleable.RecyclerView,defStyleRes);
            properties.orientation = a.getInt(R.styleable.RecyclerView_android_orientation,VERTICAL);
            properties.spanCount = a.getInt(R.styleable.RecyclerView_spanCount,1@H_403_2@);
            properties.reverseLayout = a.getBoolean(R.styleable.RecyclerView_reverseLayout,false@H_403_2@);
            properties.stackFromEnd = a.getBoolean(R.styleable.RecyclerView_stackFromEnd,false@H_403_2@);
            a.recycle();
            return@H_403_2@ properties;
        }


           public@H_403_2@ static@H_403_2@ class@H_403_2@ Properties@H_403_2@ {@H_403_2@
            /** @attr@H_403_2@ ref android.support.v7.recyclerview.R.styleable#RecyclerView_android_orientation */@H_403_2@
            public@H_403_2@ int@H_403_2@ orientation;
            /** @attr@H_403_2@ ref android.support.v7.recyclerview.R.styleable#RecyclerView_spanCount */@H_403_2@
            public@H_403_2@ int@H_403_2@ spanCount;
            /** @attr@H_403_2@ ref android.support.v7.recyclerview.R.styleable#RecyclerView_reverseLayout */@H_403_2@
            public@H_403_2@ boolean@H_403_2@ reverseLayout;
            /** @attr@H_403_2@ ref android.support.v7.recyclerview.R.styleable#RecyclerView_stackFromEnd */@H_403_2@
            public@H_403_2@ boolean@H_403_2@ stackFromEnd;
        }

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