代码片段收藏 1

 

 1. LayoutInflater 对象获取的三种方式

 

LayoutInflaterinflater=LayoutInflater.from(this);
　　
LayoutInflaterinflater=getLayoutInflater();
　　
LayoutInflaterinflater=(LayoutInflater)this.getSystemService(LAYOUT_INFLATER_SERVICE);

 

2. LayoutInflater  参数说明

 

    public View inflate(int resource, ViewGroup root, boolean attachToRoot){

   }

 

   * @param resource ID for an XML layout resource to load (e.g.,
    *        <code>R.layout.main_page</code>)                            

      布局文件ID

 

    @param root Optional view to be the parent of the generated hierarchy (if
              <em>attachToRoot</em> is true), or else simply an object that
     *        provides a set of LayoutParams values for root of the returned
     *        hierarchy (if <em>attachToRoot</em> is false.)

     可选的参数，如果第三个参数attachToRoot为true那么该对象是生成的View的父容器，

     并把生成的View最 为子View加入到该View中；

     如果第三个参数attachToRoot为false该参数只提供一个根布局参数给生成的View  

 

      * @param attachToRoot Whether the inflated hierarchy should be attached to
     *        the root parameter? If false, root is only used to create the
     *        correct subclass of LayoutParams for the root view in the XML.

     配合第二参数一起工作

 

     * @return The root View of the inflated hierarchy. If root was supplied and
     *         attachToRoot is true, this is root; otherwise it is the root of
     *         the inflated XML file.

   如果第二参数有传递并且第三个参数值为true,那么返回的是第二个参数传递进来的View

   否则返回的是从xml文件创建的View