Question

我有问题从func

更改列表视图的背景

listView通过JSON encdoe从URL接收数据：

{"results":[
    {"db_id":"6","discount":"active","db_description":"bla bla bla ","db_num":"137","db_num2":"260"},
    {"db_id":"14","db_type":"discount","db_description":"blaaaaaaa","db_num":"39","db_num2":"46"},
    {"db_id":"18","db_type":"discount","db_description":"blaaaaaaa","db_num":"335","db_num2":"456"},
]}

我的代码：

                ListAdapter adapter = new SimpleAdapter(
                        QueueActivity.this, QueueList,
                        R.layout.queue_row, new String[] { TAG_ID, TAG_DESCRIPTION, TAG_NUM, TAG_NUM2, TAG_IMAGE},
                        new int[] { R.id.qid, R.id.description, R.id.num, R.id.num2, R.id.list_image });

                setListAdapter(adapter);

onListItemClick我可以简化更新背景

protected void onListItemClick(ListView l, View v, int position, long id) {
       super.onListItemClick(l, v, position, id);
       v.setBackgroundResource(R.drawable.listview_taken_background);   
       TextView textid = (TextView) v.findViewById(R.id.queueid);
       textid.setText("NEW TEXT")
}

但我也需要从func更新背景我怎么能这样做？

对于ex，命令 new FuncName（）。execute（“2”）; 会将第二行的背景资源设置为“R.drawable.listview_taken_background”

Answer 1

您可以使用ListView.getChildAt(int index)在此位置返回View，然后修改其背景。

使用自定义布局创建/更新ListView（背景）

1 个答案: