6.3 popub窗体 popubWindow

1. 在适配器中的getItem方法中, 得到条目对应的view对象, 将结果返回给item的点击事件

2.给listview的item设置点击事件的监听

3.得到适配器中getItem方法返回的点击listItem对应的对象

4. 创建 popub窗体   

5. 给popub窗体设置透明背景    注:如果 popub没有背景则设置不了动画效果

6.show出popubWindow      

7.在activity销毁时,dismiss掉popubWindow

 

 

 

  /**

    * 1. 得到条目对应的view对象,结果返回给item的点击事件

    */

       @Override

       public   Object getItem(   int   position) {

            

                //初始化化控件

          if (position==0){

       

                     return   null ;

             }   else   if (position==(   userAppList .size()+1)){

                  

                     return   null ;

                  

             }   else   if (position<=   userAppList .size()){         //从集合中得到用户应用  

                  

                     int   newPosition=position-1;

                     appInfoBean =   userAppList .get(newPosition);

                  

                  

                  

             }   else {

                     int   newPosition=position-1-   userAppList .size()-1;

                     appInfoBean =   sysAppList .get(newPosition);

            

             }

      

               return   appInfoBean ;

      }

      

       @Override

       public   long   getItemId(   int   position) {

            

               return   0;

      }

        

   }

 

 

//3.得到适配器中getItem方法返回的点击listItem对应的对象

                        Object obj= lv_app_manage .getItemAtPosition(position);

                           if (obj!=   null && obj   instanceof   AppInfoBean){

                                  clickAppInfo =(AppInfoBean) obj;    //被点击item对应的对象

                        

                                 if (   popubWindow !=   null &&   popubWindow .isShowing()){     //再次点击时关闭已经存在的popubWindow

                                       popubWindow .dismiss();

                                       popubWindow =   null ;

                               }

                                          

                                    View contentView=View.inflate(getApplicationContext(), R.layout.   pop_app_item ,   null ) ;

                                       //4. 创建popub 窗体     contentView:填充的布局    -2,-2: 包裹内容

                                       popubWindow =   new   PopupWindow(contentView, -2, -2);

                                    

                                       //5. 给popub 窗体设置透明背景         注:如果popub没有背景则设置不了动画效果

                                       popubWindow .setBackgroundDrawable(   new   ColorDrawable(Color. TRANSPARENT   ));

                                    

                                       int [] locations=   new   int   [2];

                                    view.getLocationInWindow(locations);    //得到view对象在activity窗体上的位置的参数x,y

                                    

                                       //6.show出popubWindow      1. popub所在的窗体  2.对其方式   3.距离activity窗体左边框的距离  4.距离activity窗体上边框的距离

                                       popubWindow .showAtLocation(parent, Gravity. LEFT +Gravity. TOP   , 65, locations[1]);

                        

                              

                                    

                                    

                                      

                                       //给popubWindow设置动画展示效果

                                     ScaleAnimation  scale=   new   ScaleAnimation(0.5f, 1.2f, 0.5f, 1.2f);

                              scale.setDuration(300);

                              contentView.startAnimation(scale);

                      }

                  }

                  

    /*

       * 7.在activity销毁时关闭popubWindow

       */

       @Override

       protected   void   onDestroy() {

             if ( popubWindow   != null ){

               popubWindow .dismiss();

               popubWindow =   null ;

            }

               super .onDestroy();

      }

    

 

    /*

       * 7.在activity销毁时关闭popubWindow

       */

       @Override

       protected   void   onDestroy() {

             if ( popubWindow   != null ){

               popubWindow .dismiss();

               popubWindow =   null ;

            }

               super .onDestroy();

      }