LayoutInflater的获得方法

获得 LayoutInflater 实例的三种方式

1. LayoutInflater inflater = getLayoutInflater();//调用Activity的getLayoutInflater() 

2. LayoutInflater inflater = LayoutInflater.from(context);  

3. LayoutInflater inflater =  (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);