Question

在我的Android应用程序中，我有一个带有自定义适配器的列表视图，它有两个textview。第一个textview将始终以文本形式显示，但在某些情况下，第二个textview将为空。我只在有文本的地方为第二个textview提供背景颜色。我在这里面临的问题是，一旦我滚动列表视图，颜色就会分配给整个列表视图。

数据以下列方式传递给适配器：

String time_array[] = new String[]{"12 AM","1 AM","2 AM","3 AM","4 AM","5 AM","6 AM","7 AM","8 AM","9 AM","10 AM","11 AM","12 PM","1 PM","2 PM","3 PM","4 PM","5 PM","6 PM","7 PM","8 PM","9 PM","10 PM","11 PM"};

    String item_array[] = new String[]{"item1","item1","item1","","","","item1","item1","item1","","","","item1","item1","item1","item1","","","","","item1","item1","item1",""};   



    for(int i=0;i<time_array.length;i++)
    {
        HashMap<String, String> map = new HashMap<String, String>();
        map.put("Time", time_array[i]);
        map.put("Item", item_array[i]);

        appointment_aaray.add(map);

    }

下面是我用于listview并着色第二个textview的代码：

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    // TODO Auto-generated method stub
    if(convertView==null)
    {
        viewHolder=new ViewHolder();//
        convertView = inflater.inflate(R.layout.appointment_timings_row, null);
        viewHolder.txt_time = (TextView)convertView.findViewById(R.id.txt_time);
        viewHolder.txt_item = (TextView)convertView.findViewById(R.id.txt_item);
        convertView.setTag(viewHolder);

    }
    else
    {
        viewHolder = (ViewHolder) convertView.getTag();
    }

HashMap<String, String> map = new HashMap<String, String>();
    map = data.get(position);        
    viewHolder.txt_time.setText(map.get("Time"));
    viewHolder.txt_item.setText(map.get("Item"));

    if (position % 2 == 1) {
        convertView.setBackgroundColor(Color.parseColor("#FFFFFF"));  
    } else {
        convertView.setBackgroundColor(Color.parseColor("#FEF8F8"));  
    }

    if(map.get("Item").equals(""))
    {

    }
    else
    {
        viewHolder.txt_item.setBackgroundColor(activity.getResources().getColor(R.color.item_text_color));

    }

    return convertView;

}

有人可以帮我解决我在这里失踪的问题吗？谢谢Adavance！

Answer 1

列表视图将为第一个可见行创建行，之后将重复使用相同的行。因此，在if条件中设置默认颜色

 if(map.get("Item").equals(""))
    {
       viewHolder.txt_item.setBackgroundColor(default_color);
    }
    else
    {
       viewHolder.txt_item.setBackgroundColor(activity.getResources().getColor(R.color.item_text_color));

    }

如何使用列表视图中的数据将颜色添加到textview中？

1 个答案: