滚动时 Android-Listview 项目背景颜色更改 [英] Android-Listview items background color changing when scrolling
问题描述
我的ListView
包含两个Textviews
.在一行中,第一个是名称,第二个是结果.我需要根据结果更改结果 TextView
的背景颜色.就像如果通过然后结果 TextView
颜色将是绿色,当失败结果 TextView
颜色将是红色.我的 ListView
中有十行.我试过这样
My ListView
contains two Textviews
. In one row first one is for name and second one is for result. I need to change the background color of the result TextView
according to the result. Like if pass then the result TextView
color will be green when fails result TextView
color will be red.I have ten rows in my ListView
. I have tried like this
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
ViewHolder holder;
if(convertView==null)
{
holder = new ViewHolder();
convertView = inflater.inflate(R.layout.items, null);
holder.imgViewLogo = (ImageView) convertView.findViewById(R.id.imgViewLogo);
holder.txtViewTitle = (TextView) convertView.findViewById(R.id.txtViewTitle);
holder.txtViewDescription = (TextView) convertView.findViewById(R.id.txtViewDescription);
holder.txtholder = (TextView) convertView.findViewById(R.id.holder1);
holder.img = (ImageView) convertView.findViewById(R.id.temperrr);
convertView.setTag(holder);
}
else
holder=(ViewHolder)convertView.getTag();
ItemBean bean = (ItemBean) itemList.get(position);
holder.imgViewLogo.setImageResource(bean.getImage());
holder.txtViewTitle.setText(bean.getTitle());
holder.txtViewDescription.setText(bean.getDescription());
//------------------
if (position==0)
{
if(GridviewAdapter.glu>=81)
{
holder.img.setImageResource(R.drawable.red_arrow);
holder.txtViewDescription.setBackgroundResource(R.color.resultred);
holder.txtholder.setBackgroundResource(R.color.resultred);
}
else if (GridviewAdapter.glu==79||GridviewAdapter.glu==80)
{
holder.img.setImageResource(R.drawable.orange_arrow);
holder.txtViewDescription.setBackgroundResource(R.color.resultoren);
holder.txtholder.setBackgroundResource(R.color.resultoren);
}
else
{
holder.img.setImageResource(R.drawable.resultarrawnocolor);
holder.txtViewDescription.setBackgroundResource(0);
holder.txtholder.setBackgroundResource(0);
}
}
holder.img.setImageResource(R.drawable.resultarrawnocolor);
return convertView;
}
但是,当滚动列表时,另一个随机项目的背景颜色会发生变化.我必须做什么.?如何控制 listview 中每个位置的项目.上面的代码仅用于第一行.我对吗?
But, when scrolling the list the another random items's background color changing.what I have to do .? How can I control the items at each position in the listview . The above code is for just for the first row. am I right?
推荐答案
试试这个
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
ViewHolder holder;
if(convertView==null)
{
holder = new ViewHolder();
convertView = inflater.inflate(R.layout.items, null);
holder.imgViewLogo = (ImageView) convertView.findViewById(R.id.imgViewLogo);
holder.txtViewTitle = (TextView) convertView.findViewById(R.id.txtViewTitle);
holder.txtViewDescription = (TextView) convertView.findViewById(R.id.txtViewDescription);
holder.txtholder = (TextView) convertView.findViewById(R.id.holder1);
holder.img = (ImageView) convertView.findViewById(R.id.temperrr);
convertView.setTag(holder);
}
else
holder=(ViewHolder)convertView.getTag();
ItemBean bean = (ItemBean) itemList.get(position);
holder.imgViewLogo.setImageResource(bean.getImage());
holder.txtViewTitle.setText(bean.getTitle());
holder.txtViewDescription.setText(bean.getDescription());
//**********SET ALSO YOUR DEFAULT BACKGROUND HERE******** like//
holder.txtViewDescription.setBackgroundResource(R.color.DEFAULCOLOR);
holder.txtholder.setBackgroundResource(R.color.DEFAULCOLOR);
holder.img.setImageResource(R.drawable.defalut_image);
//**********SET ALSO YOUR DEFAULT BACKGROUND HERE******** ok//
//------------------
if (position==0)
{
if(GridviewAdapter.glu>=81)
{
holder.img.setImageResource(R.drawable.red_arrow);
holder.txtViewDescription.setBackgroundResource(R.color.resultred);
holder.txtholder.setBackgroundResource(R.color.resultred);
}
else if (GridviewAdapter.glu==79||GridviewAdapter.glu==80)
{
holder.img.setImageResource(R.drawable.orange_arrow);
holder.txtViewDescription.setBackgroundResource(R.color.resultoren);
holder.txtholder.setBackgroundResource(R.color.resultoren);
}
else
{
holder.img.setImageResource(R.drawable.resultarrawnocolor);
holder.txtViewDescription.setBackgroundResource(0);
holder.txtholder.setBackgroundResource(0);
}
}
holder.img.setImageResource(R.drawable.resultarrawnocolor);
return convertView;
}
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