ListView多条目加载

最新推荐文章于 2019-01-03 16:26:42 发布

原创最新推荐文章于 2019-01-03 16:26:42 发布 · 130 阅读

CC 4.0 BY-SA版权

本文介绍了一种使用Java实现自定义BaseAdapter的方法，通过不同布局类型动态切换展示样式，适用于Android应用中复杂列表视图的数据绑定。

public class Myadapter1 extends BaseAdapter{
    private List<NewUser.DataBean> newUserData;
    private Context context;
    private final int item=0;
    private final int item1=1;


    public Myadapter1(List<NewUser.DataBean> newUserData, Context context) {
        this.newUserData = newUserData;
        this.context = context;
    }

    @Override
    public int getCount() {
        return newUserData.size();
    }

    @Override
    public Object getItem(int position) {
        return newUserData.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public int getViewTypeCount() {
        return 2;
    }

    @Override
    public int getItemViewType(int position) {

        return position%getViewTypeCount();
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        int type = getItemViewType(position);
        ViewHolder holder= new ViewHolder();
        if (convertView==null){
            switch (type){
                case item:
                    convertView= View.inflate(context,R.layout.item,null);
                    holder.img= (ImageView) convertView.findViewById(R.id.img);
                    break;
                case item1:
                    convertView=View.inflate(context,R.layout.item1,null);
                    holder.img1= (ImageView) convertView.findViewById(R.id.img1);
                    holder.text_name1= (TextView) convertView.findViewById(R.id.text_name1);
                    break;
            }
            convertView.setTag(holder);
        }else {
            holder= (ViewHolder) convertView.getTag();
            switch (type){
                case item:
                    ImageLoader.getInstance().displayImage(newUserData.get(position).getImage_url(),holder.img);
                    break;
                case item1:
                    ImageLoader.getInstance().displayImage(newUserData.get(position).getImage_url(),holder.img1);
                    holder.text_name1.setText(newUserData.get(position).getTitle());
                    break;
            }


        }
        return convertView;
    }

    private class ViewHolder{
        private ImageView img;
        private ImageView img1;
        private TextView text_name1;

    }


}