如何让项目的高度在ListView？ [英] how to get height of the item in a listview?

问题描述

我使用的是customadapter并重写getView（）方法。在这种方法我称之为view.getHeight（），它在列表视图返回0，我想找出高度（像素）的每个项目。并找出它是在屏幕上。所以，如果我有在列表视图中10个项目，才有可能找出屏幕（像素）5号项目的位置，我想找出项目的y。左上角。

  CustomArrayAdapter适配器=新CustomArrayAdapter（这一点，R.layout.rowlayout，mydizi）;
    查看标题=（查看）getLayoutInflater（）膨胀（R.layout.listview_header_row，NULL）;
    lv.addHeaderView（头）;
        lv.setAdapter（适配器）;
        视图Viewlist产品= lv.getChildAt（5  -  lv.getFirstVisiblePosition（））;
        viewList.getLocationOnScreen（位置）;
 

解决方案

有关在列表mList给定可见行nPosition，你可以通过视图的位置：

  //寻源的位置和目的地账户的ListView行
INT [] =位置{0,0};视图Viewlist产品= mList.getChildAt（nPosition  -  mList.getFirstVisiblePosition（））;
viewList.getLocationOnScreen（位置）;
 

但你可能需要从getView（），即填充列表之后。

之外的做到这一点

I am using a customadapter and overriding the getView() method. In this method I call view.getHeight() which returns 0. I would like to find out the height (in pixel) of each item in the listview. And find out where it is on the screen. So If I have 10 items in the list view is it possible to find out where the 5th item position on the screen(in pixel) I would like to find out the y of the item. top left corner.

CustomArrayAdapter adapter = new CustomArrayAdapter(this,R.layout.rowlayout,mydizi);
    View header = (View)getLayoutInflater().inflate(R.layout.listview_header_row, null);
    lv.addHeaderView(header);


        lv.setAdapter(adapter);
        View viewList = lv.getChildAt(5 - lv.getFirstVisiblePosition());
        viewList.getLocationOnScreen(location);

解决方案

For a given VISIBLE row nPosition in list mList, you can get the location of the view via:

// find the position of the source and destination accounts ListView rows
int[] location = {0,0};

View viewList = mList.getChildAt(nPosition - mList.getFirstVisiblePosition());
viewList.getLocationOnScreen(location);

but you'll likely need to do this from outside your getView(), i.e. after the list is populated.

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