ListViewAdapter extends BaseAdapter

让listview滑动时不改变背景色

xml布局文件里设置为：
    android:cacheColorHint="#00000000"

java代码里设置为：
    listView.setCacheColorHint(0);
    或
    gridView.setCacheColorHint(0);

 

public class ListViewAdapter extends BaseAdapter {

Context context;

 

ArrayList<string> arrayList;

 

LayoutInflater inflater;

 

public ListViewAdapter(Context context, ArrayList<string> arrayList)

{ this.context = context;

this.arrayList = arrayList; //获取这个布局变量。

inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); }

 

@Override

public int getCount()

{ // TODO Auto-generated method stub return arrayList.size(); }

 

@Override

public Object getItem(int position)

{ // TODO Auto-generated method stub return null; }

 

@Override

public long getItemId(int position)

{ // TODO Auto-generated method stub return 0; }

 

@Override

public View getView(int position, View convertView, ViewGroup parent)

{ // TODO Auto-generated method stub

 

ViewHolder viewHolder;

 

if (convertView == null)

{ viewHolder = new ViewHolder();

convertView = inflater.inflate(R.layout.toobaritem_menu, null);

//这是用一个布局来填充这个View ，每个View 都是一条listview

viewHolder.contentTextView = (TextView) convertView.findViewById(R.id.title_text);

viewHolder.icon=(ImageView) convertView.findViewById(R.id.icon_image); viewHolder.icon.setImageResource(R.drawable.album_normal);

viewHolder.icon.setPadding(0, 5, 10, 5);

convertView.setTag(viewHolder); }

 

else

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

 

String path = arrayList.get(position);

String name = path.substring(path.lastIndexOf("/") + 1, path.length() - 4); viewHolder.contentTextView.setText(name);

viewHolder.contentTextView.setTextSize(25);

return convertView; }

static class ViewHolder

{ ImageView icon;

TextView contentTextView; } }